gnulib: upgrade to today's version

* tools/snippet/_Noreturn.h, tools/snippet/c++defs.h,
tools/snippet/arg-nonnull.h, tools/snippet/warn-on-use.h: Rename to...
* lib/_Noreturn.h, lib/c++defs.h, lib/arg-nonnull.h,
lib/warn-on-use.h: ... these.
* lib/filename.h, lib/getopt-cdefs.in.h, lib/getopt-core.h,
lib/getopt-ext.h, lib/getopt-pfx-core.h, lib/getopt-pfx-ext.h,
lib/localtime-buffer.c, lib/localtime-buffer.h, lib/malloca.c,
lib/malloca.h, lib/malloca.valgrind, lib/stat-w32.c, lib/stat-w32.h,
m4/eealloc.m4, m4/localtime-buffer.m4, m4/malloca.m4: New files.
* lib/argp-help.c, lib/argp-parse.c, lib/error.c, lib/float.in.h,
lib/getopt1.c, lib/getopt.c, lib/getopt.in.h, lib/getopt_int.h,
lib/gettext.h, lib/gettimeofday.c, lib/intprops.h, lib/isatty.c,
lib/limits.in.h, lib/localcharset.c, lib/Makefile.am, lib/mbrtowc.c,
lib/mbsinit.c, lib/msvc-nothrow.c, lib/quotearg.c, lib/stat.c,
lib/stdalign.in.h, lib/stdint.in.h, lib/string.in.h,
lib/sys_stat.in.h, lib/sys_types.in.h, lib/tempname.c, lib/time.in.h,
lib/unistd.in.h, lib/vasnprintf.c, lib/wchar.in.h, lib/wctype.in.h,
lib/xalloc.h, lib/xalloc-oversized.h, m4/fcntl-o.m4, m4/float_h.m4,
m4/getopt.m4, m4/gettimeofday.m4, m4/gnulib-common.m4,
m4/gnulib-comp.m4, m4/include_next.m4, m4/largefile.m4, m4/lstat.m4,
m4/mbrtowc.m4, m4/memchr.m4, m4/mkstemp.m4, m4/printf.m4, m4/sleep.m4,
m4/stat.m4, m4/stdalign.m4, m4/stdint.m4, m4/strerror.m4,
m4/string_h.m4, m4/sys_stat_h.m4, m4/sys_time_h.m4, m4/sys_types_h.m4,
m4/time_h.m4, m4/unistd_h.m4, m4/wchar_h.m4, m4/wctype_h.m4,
m4/wint_t.m4: Update.

lib/.gitignore

@@ -1,13 +1,14 @@
 alloca.h
-arg-nonnull.h
-c++defs.h
 configmake.h
 dummy.c
 errno.h
 fcntl.h
+getopt-cdefs.h
 getopt.h
 libgnu.a
+limits.h
 stdalign.h
+stdint.h
 stdio.h
 stdlib.h
 string.h
@@ -16,7 +17,6 @@ sys/
 sysexits.h
 time.h
 unistd.h
-warn-on-use.h
 wchar.h
 wctype.h
 *.sed

lib/Makefile.am

@@ -37,6 +37,7 @@ MOSTLYCLEANDIRS =
 CLEANFILES =
 DISTCLEANFILES =
 MAINTAINERCLEANFILES =
+# No GNU Make output.
 
 AM_CPPFLAGS =
 AM_CFLAGS =
@@ -273,6 +274,13 @@ EXTRA_DIST += fcntl.in.h
 
 ## end   gnulib module fcntl-h
 
+## begin gnulib module filename
+
+
+EXTRA_DIST += filename.h
+
+## end   gnulib module filename
+
 ## begin gnulib module float
 
 BUILT_SOURCES += $(FLOAT_H)
@@ -306,11 +314,11 @@ EXTRA_libgnu_la_SOURCES += float.c itold.c
 
 ## begin gnulib module getopt-posix
 
-BUILT_SOURCES += $(GETOPT_H)
+BUILT_SOURCES += $(GETOPT_H) $(GETOPT_CDEFS_H)
 
 # We need the following in order to create <getopt.h> when the system
 # doesn't have one that works with the given compiler.
-getopt.h: getopt.in.h $(top_builddir)/config.status $(ARG_NONNULL_H)
+getopt.h: getopt.in.h $(top_builddir)/config.status
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''GUARD_PREFIX''@|GL|g' \
@@ -323,9 +331,18 @@ getopt.h: getopt.in.h $(top_builddir)/config.status $(ARG_NONNULL_H)
 	      < $(srcdir)/getopt.in.h; \
 	} > $@-t && \
 	mv -f $@-t $@
-MOSTLYCLEANFILES += getopt.h getopt.h-t
 
-EXTRA_DIST += getopt.c getopt.in.h getopt1.c getopt_int.h
+getopt-cdefs.h: getopt-cdefs.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          sed -e 's|@''HAVE_SYS_CDEFS_H''@|$(HAVE_SYS_CDEFS_H)|g' \
+	      < $(srcdir)/getopt-cdefs.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+MOSTLYCLEANFILES += getopt.h getopt.h-t getopt-cdefs.h getopt-cdefs.h-t
+
+EXTRA_DIST += getopt-cdefs.in.h getopt-core.h getopt-ext.h getopt-pfx-core.h getopt-pfx-ext.h getopt.c getopt.in.h getopt1.c getopt_int.h
 
 EXTRA_libgnu_la_SOURCES += getopt.c getopt1.c
 
@@ -478,6 +495,15 @@ EXTRA_DIST += config.charset ref-add.sin ref-del.sin
 
 ## end   gnulib module localcharset
 
+## begin gnulib module localtime-buffer
+
+
+EXTRA_DIST += localtime-buffer.c localtime-buffer.h
+
+EXTRA_libgnu_la_SOURCES += localtime-buffer.c
+
+## end   gnulib module localtime-buffer
+
 ## begin gnulib module lstat
 
 
@@ -505,6 +531,14 @@ EXTRA_libgnu_la_SOURCES += malloc.c
 
 ## end   gnulib module malloc-posix
 
+## begin gnulib module malloca
+
+libgnu_la_SOURCES += malloca.c
+
+EXTRA_DIST += malloca.h malloca.valgrind
+
+## end   gnulib module malloca
+
 ## begin gnulib module mbrtowc
 
 
@@ -647,90 +681,57 @@ EXTRA_libgnu_la_SOURCES += sleep.c
 ## begin gnulib module snippet/_Noreturn
 
 # Because this Makefile snippet defines a variable used by other
-# gnulib Makefile snippets, it must be present in all Makefile.am that
+# gnulib Makefile snippets, it must be present in all makefiles that
 # need it. This is ensured by the applicability 'all' defined above.
 
-_NORETURN_H=$(top_srcdir)/tools/snippet/_Noreturn.h
+_NORETURN_H=$(srcdir)/_Noreturn.h
 
-EXTRA_DIST += $(top_srcdir)/tools/snippet/_Noreturn.h
+EXTRA_DIST += _Noreturn.h
 
 ## end   gnulib module snippet/_Noreturn
 
 ## begin gnulib module snippet/arg-nonnull
 
-# The BUILT_SOURCES created by this Makefile snippet are not used via #include
+# Because this Makefile snippet defines a variable used by other
-# statements but through direct file reference. Therefore this snippet must be
+# gnulib Makefile snippets, it must be present in all makefiles that
-# present in all Makefile.am that need it. This is ensured by the applicability
+# need it. This is ensured by the applicability 'all' defined above.
-# 'all' defined above.
 
-BUILT_SOURCES += arg-nonnull.h
+ARG_NONNULL_H=$(srcdir)/arg-nonnull.h
-# The arg-nonnull.h that gets inserted into generated .h files is the same as
-# build-aux/snippet/arg-nonnull.h, except that it has the copyright header cut
-# off.
-arg-nonnull.h: $(top_srcdir)/tools/snippet/arg-nonnull.h
-	$(AM_V_GEN)rm -f $@-t $@ && \
-	sed -n -e '/GL_ARG_NONNULL/,$$p' \
-	  < $(top_srcdir)/tools/snippet/arg-nonnull.h \
-	  > $@-t && \
-	mv $@-t $@
-MOSTLYCLEANFILES += arg-nonnull.h arg-nonnull.h-t
 
-ARG_NONNULL_H=arg-nonnull.h
+EXTRA_DIST += arg-nonnull.h
-
-EXTRA_DIST += $(top_srcdir)/tools/snippet/arg-nonnull.h
 
 ## end   gnulib module snippet/arg-nonnull
 
 ## begin gnulib module snippet/c++defs
 
-# The BUILT_SOURCES created by this Makefile snippet are not used via #include
+# Because this Makefile snippet defines a variable used by other
-# statements but through direct file reference. Therefore this snippet must be
+# gnulib Makefile snippets, it must be present in all makefiles that
-# present in all Makefile.am that need it. This is ensured by the applicability
+# need it. This is ensured by the applicability 'all' defined above.
-# 'all' defined above.
 
-BUILT_SOURCES += c++defs.h
+CXXDEFS_H=$(srcdir)/c++defs.h
-# The c++defs.h that gets inserted into generated .h files is the same as
-# build-aux/snippet/c++defs.h, except that it has the copyright header cut off.
-c++defs.h: $(top_srcdir)/tools/snippet/c++defs.h
-	$(AM_V_GEN)rm -f $@-t $@ && \
-	sed -n -e '/_GL_CXXDEFS/,$$p' \
-	  < $(top_srcdir)/tools/snippet/c++defs.h \
-	  > $@-t && \
-	mv $@-t $@
-MOSTLYCLEANFILES += c++defs.h c++defs.h-t
 
-CXXDEFS_H=c++defs.h
+EXTRA_DIST += c++defs.h
-
-EXTRA_DIST += $(top_srcdir)/tools/snippet/c++defs.h
 
 ## end   gnulib module snippet/c++defs
 
 ## begin gnulib module snippet/warn-on-use
 
-BUILT_SOURCES += warn-on-use.h
+# Because this Makefile snippet defines a variable used by other
-# The warn-on-use.h that gets inserted into generated .h files is the same as
+# gnulib Makefile snippets, it must be present in all makefiles that
-# build-aux/snippet/warn-on-use.h, except that it has the copyright header cut
+# need it. This is ensured by the applicability 'all' defined above.
-# off.
-warn-on-use.h: $(top_srcdir)/tools/snippet/warn-on-use.h
-	$(AM_V_GEN)rm -f $@-t $@ && \
-	sed -n -e '/^.ifndef/,$$p' \
-	  < $(top_srcdir)/tools/snippet/warn-on-use.h \
-	  > $@-t && \
-	mv $@-t $@
-MOSTLYCLEANFILES += warn-on-use.h warn-on-use.h-t
 
-WARN_ON_USE_H=warn-on-use.h
+WARN_ON_USE_H=$(srcdir)/warn-on-use.h
 
-EXTRA_DIST += $(top_srcdir)/tools/snippet/warn-on-use.h
+EXTRA_DIST += warn-on-use.h
 
 ## end   gnulib module snippet/warn-on-use
 
 ## begin gnulib module stat
 
 
-EXTRA_DIST += stat.c
+EXTRA_DIST += stat-w32.c stat-w32.h stat.c
 
-EXTRA_libgnu_la_SOURCES += stat.c
+EXTRA_libgnu_la_SOURCES += stat-w32.c stat.c
 
 ## end   gnulib module stat
 
@@ -1163,6 +1164,7 @@ string.h: string.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
 	      -e 's|@''NEXT_STRING_H''@|$(NEXT_STRING_H)|g' \
+	      -e 's/@''GNULIB_EXPLICIT_BZERO''@/$(GNULIB_EXPLICIT_BZERO)/g' \
 	      -e 's/@''GNULIB_FFSL''@/$(GNULIB_FFSL)/g' \
 	      -e 's/@''GNULIB_FFSLL''@/$(GNULIB_FFSLL)/g' \
 	      -e 's/@''GNULIB_MBSLEN''@/$(GNULIB_MBSLEN)/g' \
@@ -1201,7 +1203,8 @@ string.h: string.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
 	      -e 's/@''GNULIB_STRSIGNAL''@/$(GNULIB_STRSIGNAL)/g' \
 	      -e 's/@''GNULIB_STRVERSCMP''@/$(GNULIB_STRVERSCMP)/g' \
 	      < $(srcdir)/string.in.h | \
-	  sed -e 's|@''HAVE_FFSL''@|$(HAVE_FFSL)|g' \
+	  sed -e 's|@''HAVE_EXPLICIT_BZERO''@|$(HAVE_EXPLICIT_BZERO)|g' \
+	      -e 's|@''HAVE_FFSL''@|$(HAVE_FFSL)|g' \
 	      -e 's|@''HAVE_FFSLL''@|$(HAVE_FFSLL)|g' \
 	      -e 's|@''HAVE_MBSLEN''@|$(HAVE_MBSLEN)|g' \
 	      -e 's|@''HAVE_MEMCHR''@|$(HAVE_MEMCHR)|g' \
@@ -1323,6 +1326,7 @@ sys/stat.h: sys_stat.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNU
 	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
 	      -e 's|@''NEXT_SYS_STAT_H''@|$(NEXT_SYS_STAT_H)|g' \
 	      -e 's|@''WINDOWS_64_BIT_ST_SIZE''@|$(WINDOWS_64_BIT_ST_SIZE)|g' \
+	      -e 's|@''WINDOWS_STAT_TIMESPEC''@|$(WINDOWS_STAT_TIMESPEC)|g' \
 	      -e 's/@''GNULIB_FCHMODAT''@/$(GNULIB_FCHMODAT)/g' \
 	      -e 's/@''GNULIB_FSTAT''@/$(GNULIB_FSTAT)/g' \
 	      -e 's/@''GNULIB_FSTATAT''@/$(GNULIB_FSTATAT)/g' \
@@ -1336,6 +1340,7 @@ sys/stat.h: sys_stat.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNU
 	      -e 's/@''GNULIB_MKNODAT''@/$(GNULIB_MKNODAT)/g' \
 	      -e 's/@''GNULIB_STAT''@/$(GNULIB_STAT)/g' \
 	      -e 's/@''GNULIB_UTIMENSAT''@/$(GNULIB_UTIMENSAT)/g' \
+	      -e 's/@''GNULIB_OVERRIDES_STRUCT_STAT''@/$(GNULIB_OVERRIDES_STRUCT_STAT)/g' \
 	      -e 's|@''HAVE_FCHMODAT''@|$(HAVE_FCHMODAT)|g' \
 	      -e 's|@''HAVE_FSTATAT''@|$(HAVE_FSTATAT)|g' \
 	      -e 's|@''HAVE_FUTIMENS''@|$(HAVE_FUTIMENS)|g' \
@@ -1419,6 +1424,7 @@ sys/types.h: sys_types.in.h $(top_builddir)/config.status
 	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
 	      -e 's|@''NEXT_SYS_TYPES_H''@|$(NEXT_SYS_TYPES_H)|g' \
 	      -e 's|@''WINDOWS_64_BIT_OFF_T''@|$(WINDOWS_64_BIT_OFF_T)|g' \
+	      -e 's|@''WINDOWS_STAT_INODES''@|$(WINDOWS_STAT_INODES)|g' \
 	      < $(srcdir)/sys_types.in.h; \
 	} > $@-t && \
 	mv $@-t $@
@@ -1507,24 +1513,31 @@ time.h: time.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
 	      -e 's|@''NEXT_TIME_H''@|$(NEXT_TIME_H)|g' \
-	      -e 's/@''GNULIB_GETTIMEOFDAY''@/$(GNULIB_GETTIMEOFDAY)/g' \
+	      -e 's/@''GNULIB_CTIME''@/$(GNULIB_CTIME)/g' \
+	      -e 's/@''GNULIB_LOCALTIME''@/$(GNULIB_LOCALTIME)/g' \
 	      -e 's/@''GNULIB_MKTIME''@/$(GNULIB_MKTIME)/g' \
 	      -e 's/@''GNULIB_NANOSLEEP''@/$(GNULIB_NANOSLEEP)/g' \
+	      -e 's/@''GNULIB_STRFTIME''@/$(GNULIB_STRFTIME)/g' \
 	      -e 's/@''GNULIB_STRPTIME''@/$(GNULIB_STRPTIME)/g' \
 	      -e 's/@''GNULIB_TIMEGM''@/$(GNULIB_TIMEGM)/g' \
 	      -e 's/@''GNULIB_TIME_R''@/$(GNULIB_TIME_R)/g' \
 	      -e 's/@''GNULIB_TIME_RZ''@/$(GNULIB_TIME_RZ)/g' \
+	      -e 's/@''GNULIB_TZSET''@/$(GNULIB_TZSET)/g' \
 	      -e 's|@''HAVE_DECL_LOCALTIME_R''@|$(HAVE_DECL_LOCALTIME_R)|g' \
 	      -e 's|@''HAVE_NANOSLEEP''@|$(HAVE_NANOSLEEP)|g' \
 	      -e 's|@''HAVE_STRPTIME''@|$(HAVE_STRPTIME)|g' \
 	      -e 's|@''HAVE_TIMEGM''@|$(HAVE_TIMEGM)|g' \
 	      -e 's|@''HAVE_TIMEZONE_T''@|$(HAVE_TIMEZONE_T)|g' \
+	      -e 's|@''HAVE_TZSET''@|$(HAVE_TZSET)|g' \
+	      -e 's|@''REPLACE_CTIME''@|$(REPLACE_CTIME)|g' \
 	      -e 's|@''REPLACE_GMTIME''@|$(REPLACE_GMTIME)|g' \
 	      -e 's|@''REPLACE_LOCALTIME''@|$(REPLACE_LOCALTIME)|g' \
 	      -e 's|@''REPLACE_LOCALTIME_R''@|$(REPLACE_LOCALTIME_R)|g' \
 	      -e 's|@''REPLACE_MKTIME''@|$(REPLACE_MKTIME)|g' \
 	      -e 's|@''REPLACE_NANOSLEEP''@|$(REPLACE_NANOSLEEP)|g' \
+	      -e 's|@''REPLACE_STRFTIME''@|$(REPLACE_STRFTIME)|g' \
 	      -e 's|@''REPLACE_TIMEGM''@|$(REPLACE_TIMEGM)|g' \
+	      -e 's|@''REPLACE_TZSET''@|$(REPLACE_TZSET)|g' \
 	      -e 's|@''PTHREAD_H_DEFINES_STRUCT_TIMESPEC''@|$(PTHREAD_H_DEFINES_STRUCT_TIMESPEC)|g' \
 	      -e 's|@''SYS_TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(SYS_TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
 	      -e 's|@''TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
@@ -1599,6 +1612,7 @@ unistd.h: unistd.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
 	      -e 's/@''GNULIB_SLEEP''@/$(GNULIB_SLEEP)/g' \
 	      -e 's/@''GNULIB_SYMLINK''@/$(GNULIB_SYMLINK)/g' \
 	      -e 's/@''GNULIB_SYMLINKAT''@/$(GNULIB_SYMLINKAT)/g' \
+	      -e 's/@''GNULIB_TRUNCATE''@/$(GNULIB_TRUNCATE)/g' \
 	      -e 's/@''GNULIB_TTYNAME_R''@/$(GNULIB_TTYNAME_R)/g' \
 	      -e 's/@''GNULIB_UNISTD_H_GETOPT''@/0$(GNULIB_GL_UNISTD_H_GETOPT)/g' \
 	      -e 's/@''GNULIB_UNISTD_H_NONBLOCKING''@/$(GNULIB_UNISTD_H_NONBLOCKING)/g' \
@@ -1636,6 +1650,7 @@ unistd.h: unistd.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
 	      -e 's|@''HAVE_SLEEP''@|$(HAVE_SLEEP)|g' \
 	      -e 's|@''HAVE_SYMLINK''@|$(HAVE_SYMLINK)|g' \
 	      -e 's|@''HAVE_SYMLINKAT''@|$(HAVE_SYMLINKAT)|g' \
+	      -e 's|@''HAVE_TRUNCATE''@|$(HAVE_TRUNCATE)|g' \
 	      -e 's|@''HAVE_UNLINKAT''@|$(HAVE_UNLINKAT)|g' \
 	      -e 's|@''HAVE_USLEEP''@|$(HAVE_USLEEP)|g' \
 	      -e 's|@''HAVE_DECL_ENVIRON''@|$(HAVE_DECL_ENVIRON)|g' \
@@ -1677,6 +1692,7 @@ unistd.h: unistd.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
 	      -e 's|@''REPLACE_SLEEP''@|$(REPLACE_SLEEP)|g' \
 	      -e 's|@''REPLACE_SYMLINK''@|$(REPLACE_SYMLINK)|g' \
 	      -e 's|@''REPLACE_SYMLINKAT''@|$(REPLACE_SYMLINKAT)|g' \
+	      -e 's|@''REPLACE_TRUNCATE''@|$(REPLACE_TRUNCATE)|g' \
 	      -e 's|@''REPLACE_TTYNAME_R''@|$(REPLACE_TTYNAME_R)|g' \
 	      -e 's|@''REPLACE_UNLINK''@|$(REPLACE_UNLINK)|g' \
 	      -e 's|@''REPLACE_UNLINKAT''@|$(REPLACE_UNLINKAT)|g' \
@@ -1736,6 +1752,7 @@ wchar.h: wchar.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H)
 	      -e 's|@''HAVE_FEATURES_H''@|$(HAVE_FEATURES_H)|g' \
 	      -e 's|@''NEXT_WCHAR_H''@|$(NEXT_WCHAR_H)|g' \
 	      -e 's|@''HAVE_WCHAR_H''@|$(HAVE_WCHAR_H)|g' \
+	      -e 's/@''HAVE_CRTDEFS_H''@/$(HAVE_CRTDEFS_H)/g' \
 	      -e 's/@''GNULIB_OVERRIDES_WINT_T''@/$(GNULIB_OVERRIDES_WINT_T)/g' \
 	      -e 's/@''GNULIB_BTOWC''@/$(GNULIB_BTOWC)/g' \
 	      -e 's/@''GNULIB_WCTOB''@/$(GNULIB_WCTOB)/g' \
@@ -1776,6 +1793,7 @@ wchar.h: wchar.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H)
 	      -e 's/@''GNULIB_WCSSTR''@/$(GNULIB_WCSSTR)/g' \
 	      -e 's/@''GNULIB_WCSTOK''@/$(GNULIB_WCSTOK)/g' \
 	      -e 's/@''GNULIB_WCSWIDTH''@/$(GNULIB_WCSWIDTH)/g' \
+	      -e 's/@''GNULIB_WCSFTIME''@/$(GNULIB_WCSFTIME)/g' \
 	      < $(srcdir)/wchar.in.h | \
 	  sed -e 's|@''HAVE_WINT_T''@|$(HAVE_WINT_T)|g' \
 	      -e 's|@''HAVE_BTOWC''@|$(HAVE_BTOWC)|g' \
@@ -1815,6 +1833,7 @@ wchar.h: wchar.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H)
 	      -e 's|@''HAVE_WCSSTR''@|$(HAVE_WCSSTR)|g' \
 	      -e 's|@''HAVE_WCSTOK''@|$(HAVE_WCSTOK)|g' \
 	      -e 's|@''HAVE_WCSWIDTH''@|$(HAVE_WCSWIDTH)|g' \
+	      -e 's|@''HAVE_WCSFTIME''@|$(HAVE_WCSFTIME)|g' \
 	      -e 's|@''HAVE_DECL_WCTOB''@|$(HAVE_DECL_WCTOB)|g' \
 	      -e 's|@''HAVE_DECL_WCWIDTH''@|$(HAVE_DECL_WCWIDTH)|g' \
 	  | \
@@ -1831,6 +1850,7 @@ wchar.h: wchar.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H)
 	      -e 's|@''REPLACE_WCSNRTOMBS''@|$(REPLACE_WCSNRTOMBS)|g' \
 	      -e 's|@''REPLACE_WCWIDTH''@|$(REPLACE_WCWIDTH)|g' \
 	      -e 's|@''REPLACE_WCSWIDTH''@|$(REPLACE_WCSWIDTH)|g' \
+	      -e 's|@''REPLACE_WCSFTIME''@|$(REPLACE_WCSFTIME)|g' \
 	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
 	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
 	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
@@ -1858,6 +1878,7 @@ wctype.h: wctype.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(WARN_ON_USE_H
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
 	      -e 's|@''NEXT_WCTYPE_H''@|$(NEXT_WCTYPE_H)|g' \
+	      -e 's/@''HAVE_CRTDEFS_H''@/$(HAVE_CRTDEFS_H)/g' \
 	      -e 's/@''GNULIB_OVERRIDES_WINT_T''@/$(GNULIB_OVERRIDES_WINT_T)/g' \
 	      -e 's/@''GNULIB_ISWBLANK''@/$(GNULIB_ISWBLANK)/g' \
 	      -e 's/@''GNULIB_WCTYPE''@/$(GNULIB_WCTYPE)/g' \

lib/argp-help.c

@@ -880,7 +880,8 @@ hol_append (struct hol *hol, struct hol *more)
 
           /* Fix up the short options pointers from HOL.  */
           for (e = entries, left = hol->num_entries; left > 0; e++, left--)
-            e->short_options += (short_options - hol->short_options);
+            e->short_options
+              = short_options + (e->short_options - hol->short_options);
 
           /* Now add the short options from MORE, fixing up its entries
              too.  */
@@ -1460,7 +1461,7 @@ argp_args_usage (const struct argp *argp, const struct argp_state *state,
 }
 
 /* Print the documentation for ARGP to STREAM; if POST is false, then
-   everything preceeding a '\v' character in the documentation strings (or
+   everything preceding a '\v' character in the documentation strings (or
    the whole string, for those with none) is printed, otherwise, everything
    following the '\v' character (nothing for strings without).  Each separate
    bit of documentation is separated a blank line, and if PRE_BLANK is true,
@@ -1873,8 +1874,8 @@ __argp_failure (const struct argp_state *state, int status, int errnum,
               char const *s = NULL;
               putc_unlocked (':', stream);
               putc_unlocked (' ', stream);
-# if HAVE_DECL_STRERROR_R
+# if GNULIB_STRERROR_R_POSIX || HAVE_DECL_STRERROR_R
-#  if STRERROR_R_CHAR_P
+#  if !GNULIB_STRERROR_R_POSIX && STRERROR_R_CHAR_P
               s = __strerror_r (errnum, buf, sizeof buf);
 #  else
               if (__strerror_r (errnum, buf, sizeof buf) == 0)

lib/argp-parse.c

@@ -740,12 +740,15 @@ parser_parse_opt (struct parser *parser, int opt, char *val)
             }
     }
   else
-    /* A long option.  We use shifts instead of masking for extracting
+    /* A long option.  Preserve the sign in the user key, without
-       the user value in order to preserve the sign.  */
+       invoking undefined behavior.  Assume two's complement.  */
-    err =
+    {
-      group_parse (&parser->groups[group_key - 1], &parser->state,
+      int user_key =
-                   (opt << GROUP_BITS) >> GROUP_BITS,
+        ((opt & (1 << (USER_BITS - 1))) ? ~USER_MASK : 0) | (opt & USER_MASK);
-                   parser->opt_data.optarg);
+      err =
+        group_parse (&parser->groups[group_key - 1], &parser->state,
+                     user_key, parser->opt_data.optarg);
+    }
 
   if (err == EBADKEY)
     /* At least currently, an option not recognized is an error in the

lib/error.c

@@ -98,28 +98,32 @@ extern void __error_at_line (int status, int errnum, const char *file_name,
 #  define WIN32_LEAN_AND_MEAN
 #  include <windows.h>
 /* Get _get_osfhandle.  */
-#  include "msvc-nothrow.h"
+#  if GNULIB_MSVC_NOTHROW
+#   include "msvc-nothrow.h"
+#  else
+#   include <io.h>
+#  endif
 # endif
 
 /* The gnulib override of fcntl is not needed in this file.  */
 # undef fcntl
 
-# if !HAVE_DECL_STRERROR_R
+# if !(GNULIB_STRERROR_R_POSIX || HAVE_DECL_STRERROR_R)
 #  ifndef HAVE_DECL_STRERROR_R
 "this configure-time declaration test was not run"
 #  endif
 #  if STRERROR_R_CHAR_P
-char *strerror_r ();
+char *strerror_r (int errnum, char *buf, size_t buflen);
 #  else
-int strerror_r ();
+int strerror_r (int errnum, char *buf, size_t buflen);
 #  endif
 # endif
 
 #define program_name getprogname ()
 
-# if HAVE_STRERROR_R || defined strerror_r
+# if GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r
 #  define __strerror_r strerror_r
-# endif /* HAVE_STRERROR_R || defined strerror_r */
+# endif /* GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r */
 #endif  /* not _LIBC */
 
 #if !_LIBC
@@ -172,9 +176,9 @@ print_errno_message (int errnum)
 {
   char const *s;
 
-#if defined HAVE_STRERROR_R || _LIBC
+#if _LIBC || GNULIB_STRERROR_R_POSIX || defined HAVE_STRERROR_R
   char errbuf[1024];
-# if _LIBC || STRERROR_R_CHAR_P
+# if _LIBC || (!GNULIB_STRERROR_R_POSIX && STRERROR_R_CHAR_P)
   s = __strerror_r (errnum, errbuf, sizeof errbuf);
 # else
   if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
@@ -268,7 +272,6 @@ error_tail (int status, int errnum, const char *message, va_list args)
   else
 #endif
     vfprintf (stderr, message, args);
-  va_end (args);
 
   ++error_message_count;
   if (errnum)
@@ -318,6 +321,7 @@ error (int status, int errnum, const char *message, ...)
 
   va_start (args, message);
   error_tail (status, errnum, message, args);
+  va_end (args);
 
 #ifdef _LIBC
   _IO_funlockfile (stderr);
@@ -388,6 +392,7 @@ error_at_line (int status, int errnum, const char *file_name,
 
   va_start (args, message);
   error_tail (status, errnum, message, args);
+  va_end (args);
 
 #ifdef _LIBC
   _IO_funlockfile (stderr);

lib/filename.h

@@ -0,0 +1,54 @@
+/* Basic filename support macros.
+   Copyright (C) 2001-2004, 2007-2017 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _FILENAME_H
+#define _FILENAME_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Pathname support.
+   ISSLASH(C)           tests whether C is a directory separator character.
+   IS_ABSOLUTE_PATH(P)  tests whether P is an absolute path.  If it is not,
+                        it may be concatenated to a directory pathname.
+   IS_PATH_WITH_DIR(P)  tests whether P contains a directory specification.
+ */
+#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
+  /* Native Windows, Cygwin, OS/2, DOS */
+# define ISSLASH(C) ((C) == '/' || (C) == '\\')
+# define HAS_DEVICE(P) \
+    ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
+     && (P)[1] == ':')
+# define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))
+# define IS_PATH_WITH_DIR(P) \
+    (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))
+# define FILE_SYSTEM_PREFIX_LEN(P) (HAS_DEVICE (P) ? 2 : 0)
+#else
+  /* Unix */
+# define ISSLASH(C) ((C) == '/')
+# define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])
+# define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
+# define FILE_SYSTEM_PREFIX_LEN(P) 0
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _FILENAME_H */

lib/float.in.h

@@ -63,7 +63,7 @@
 /* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
    precision in the compiler but 64 bits of precision at runtime.  See
    <http://lists.gnu.org/archive/html/bug-gnulib/2008-07/msg00063.html>.  */
-#if defined __i386__ && defined __FreeBSD__
+#if defined __i386__ && (defined __FreeBSD__ || defined __DragonFly__)
 /* Number of mantissa units, in base FLT_RADIX.  */
 # undef LDBL_MANT_DIG
 # define LDBL_MANT_DIG   64

lib/getopt-cdefs.in.h

@@ -0,0 +1,67 @@
+/* getopt-on-non-glibc compatibility macros.
+   Copyright (C) 1989-2017 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library.
+
+   gnulib is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   gnulib is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public
+   License along with gnulib; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_CDEFS_H
+#define _GETOPT_CDEFS_H 1
+
+/* This header should not be used directly; include getopt.h or
+   unistd.h instead.  It does not have a protective #error, because
+   the guard macro for getopt.h in gnulib is not fixed.  */
+
+/* getopt-core.h and getopt-ext.h are shared with GNU libc, and expect
+   a number of the internal macros supplied to GNU libc's headers by
+   sys/cdefs.h.  Provide fallback definitions for all of them.  */
+#if @HAVE_SYS_CDEFS_H@
+# include <sys/cdefs.h>
+#endif
+
+#ifndef __BEGIN_DECLS
+# ifdef __cplusplus
+#  define __BEGIN_DECLS extern "C" {
+# else
+#  define __BEGIN_DECLS /* nothing */
+# endif
+#endif
+#ifndef __END_DECLS
+# ifdef __cplusplus
+#  define __END_DECLS }
+# else
+#  define __END_DECLS /* nothing */
+# endif
+#endif
+
+#ifndef __GNUC_PREREQ
+# if defined __GNUC__ && defined __GNUC_VERSION__
+# define __GNUC_PREREQ(maj, min) \
+        ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+# else
+#  define __GNUC_PREREQ(maj, min) 0
+# endif
+#endif
+
+#ifndef __THROW
+# if defined __cplusplus && __GNUC_PREREQ (2,8)
+#  define __THROW       throw ()
+# else
+#  define __THROW
+# endif
+#endif
+
+#endif /* _GETOPT_CDEFS_H */

lib/getopt-core.h

@@ -0,0 +1,96 @@
+/* Declarations for getopt (basic, portable features only).
+   Copyright (C) 1989-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public
+   License as published by the Free Software Foundation; either
+   version 3 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_CORE_H
+#define _GETOPT_CORE_H 1
+
+/* This header should not be used directly; include getopt.h or
+   unistd.h instead.  Unlike most bits headers, it does not have
+   a protective #error, because the guard macro for getopt.h in
+   gnulib is not fixed.  */
+
+__BEGIN_DECLS
+
+/* For communication from 'getopt' to the caller.
+   When 'getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when 'ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to 'getopt'.
+
+   On entry to 'getopt', zero means this is the first call; initialize.
+
+   When 'getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, 'optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message 'getopt' prints
+   for unrecognized options.  */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int optopt;
+
+/* Get definitions and prototypes for functions to process the
+   arguments in ARGV (ARGC of them, minus the program name) for
+   options given in OPTS.
+
+   Return the option character from OPTS just read.  Return -1 when
+   there are no more options.  For unrecognized options, or options
+   missing arguments, 'optopt' is set to the option letter, and '?' is
+   returned.
+
+   The OPTS string is a list of characters which are recognized option
+   letters, optionally followed by colons, specifying that that letter
+   takes an argument, to be placed in 'optarg'.
+
+   If a letter in OPTS is followed by two colons, its argument is
+   optional.  This behavior is specific to the GNU 'getopt'.
+
+   The argument '--' causes premature termination of argument
+   scanning, explicitly telling 'getopt' that there are no more
+   options.
+
+   If OPTS begins with '-', then non-option arguments are treated as
+   arguments to the option '\1'.  This behavior is specific to the GNU
+   'getopt'.  If OPTS begins with '+', or POSIXLY_CORRECT is set in
+   the environment, then do not permute arguments.
+
+   For standards compliance, the 'argv' argument has the type
+   char *const *, but this is inaccurate; if argument permutation is
+   enabled, the argv array (not the strings it points to) must be
+   writable.  */
+
+extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
+       __THROW _GL_ARG_NONNULL ((2, 3));
+
+__END_DECLS
+
+#endif /* _GETOPT_CORE_H */

lib/getopt-ext.h

@@ -0,0 +1,77 @@
+/* Declarations for getopt (GNU extensions).
+   Copyright (C) 1989-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public
+   License as published by the Free Software Foundation; either
+   version 3 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_EXT_H
+#define _GETOPT_EXT_H 1
+
+/* This header should not be used directly; include getopt.h instead.
+   Unlike most bits headers, it does not have a protective #error,
+   because the guard macro for getopt.h in gnulib is not fixed.  */
+
+__BEGIN_DECLS
+
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of 'struct option' terminated by an element containing a name which is
+   zero.
+
+   The field 'has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument 	(or 2) if the option takes an optional argument.
+
+   If the field 'flag' is not NULL, it points to a variable that is set
+   to the value given in the field 'val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an 'int' to
+   a compiled-in constant, such as set a value from 'optarg', set the
+   option's 'flag' field to zero and its 'val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero 'flag' field, 'getopt'
+   returns the contents of the 'val' field.  */
+
+struct option
+{
+  const char *name;
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the 'has_arg' field of 'struct option'.  */
+
+#define no_argument		0
+#define required_argument	1
+#define optional_argument	2
+
+extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
+			const char *__shortopts,
+		        const struct option *__longopts, int *__longind)
+       __THROW _GL_ARG_NONNULL ((2, 3));
+extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
+			     const char *__shortopts,
+		             const struct option *__longopts, int *__longind)
+       __THROW _GL_ARG_NONNULL ((2, 3));
+
+__END_DECLS
+
+#endif /* _GETOPT_EXT_H */

lib/getopt-pfx-core.h

@@ -0,0 +1,59 @@
+/* getopt (basic, portable features) gnulib wrapper header.
+   Copyright (C) 1989-2017 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library.
+
+   gnulib is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   gnulib is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public
+   License along with gnulib; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_PFX_CORE_H
+#define _GETOPT_PFX_CORE_H 1
+
+/* This header should not be used directly; include getopt.h or
+   unistd.h instead.  It does not have a protective #error, because
+   the guard macro for getopt.h in gnulib is not fixed.  */
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+   identifier that prefixes the external functions and variables
+   defined in getopt-core.h and getopt-ext.h.  Systematically
+   rename identifiers so that they do not collide with the system
+   functions and variables.  Renaming avoids problems with some
+   compilers and linkers.  */
+#ifdef __GETOPT_PREFIX
+# ifndef __GETOPT_ID
+#  define __GETOPT_CONCAT(x, y) x ## y
+#  define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+#  define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# endif
+# undef getopt
+# undef optarg
+# undef opterr
+# undef optind
+# undef optopt
+# define getopt __GETOPT_ID (getopt)
+# define optarg __GETOPT_ID (optarg)
+# define opterr __GETOPT_ID (opterr)
+# define optind __GETOPT_ID (optind)
+# define optopt __GETOPT_ID (optopt)
+
+/* The system's getopt.h may have already included getopt-core.h to
+   declare the unprefixed identifiers.  Undef _GETOPT_CORE_H so that
+   getopt-core.h declares them with prefixes.  */
+# undef _GETOPT_CORE_H
+#endif
+
+#include <getopt-core.h>
+
+#endif /* _GETOPT_PFX_CORE_H */

lib/getopt-pfx-ext.h

@@ -0,0 +1,71 @@
+/* getopt (GNU extensions) gnulib wrapper header.
+   Copyright (C) 1989-2017 Free Software Foundation, Inc.
+   This file is part of gnulib.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library.
+
+   gnulib is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   gnulib is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public
+   License along with gnulib; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_PFX_EXT_H
+#define _GETOPT_PFX_EXT_H 1
+
+/* This header should not be used directly; include getopt.h instead.
+   It does not have a protective #error, because the guard macro for
+   getopt.h in gnulib is not fixed.  */
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+   identifier that prefixes the external functions and variables
+   defined in getopt-core.h and getopt-ext.h.  Systematically
+   rename identifiers so that they do not collide with the system
+   functions and variables.  Renaming avoids problems with some
+   compilers and linkers.  */
+#ifdef __GETOPT_PREFIX
+# ifndef __GETOPT_ID
+#  define __GETOPT_CONCAT(x, y) x ## y
+#  define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+#  define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# endif
+# undef getopt_long
+# undef getopt_long_only
+# undef option
+# undef _getopt_internal
+# define getopt_long __GETOPT_ID (getopt_long)
+# define getopt_long_only __GETOPT_ID (getopt_long_only)
+# define option __GETOPT_ID (option)
+# define _getopt_internal __GETOPT_ID (getopt_internal)
+
+/* The system's getopt.h may have already included getopt-ext.h to
+   declare the unprefixed identifiers.  Undef _GETOPT_EXT_H so that
+   getopt-ext.h declares them with prefixes.  */
+# undef _GETOPT_EXT_H
+#endif
+
+/* Standalone applications get correct prototypes for getopt_long and
+   getopt_long_only; they declare "char **argv".  For backward
+   compatibility with old applications, if __GETOPT_PREFIX is not
+   defined, we supply GNU-libc-compatible, but incorrect, prototypes
+   using "char *const *argv".  (GNU libc is stuck with the incorrect
+   prototypes, as they are baked into older versions of LSB.)  */
+#ifndef __getopt_argv_const
+# if defined __GETOPT_PREFIX
+#  define __getopt_argv_const /* empty */
+# else
+#  define __getopt_argv_const const
+# endif
+#endif
+
+#include <getopt-ext.h>
+
+#endif /* _GETOPT_PFX_EXT_H */

lib/getopt.in.h

@@ -1,20 +1,22 @@
 /* Declarations for getopt.
-   Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2007, 2009-2017 Free Software
+   Copyright (C) 1989-2017 Free Software Foundation, Inc.
-   Foundation, Inc.
+   This file is part of gnulib.
-   This file is part of the GNU C Library.
+   Unlike most of the getopt implementation, it is NOT shared
+   with the GNU C Library, which supplies a different version of
+   this file.
 
-   This program is free software: you can redistribute it and/or modify
+   gnulib is free software; you can redistribute it and/or modify it
-   it under the terms of the GNU General Public License as published by
+   under the terms of the GNU General Public License as
-   the Free Software Foundation; either version 3 of the License, or
+   published by the Free Software Foundation; either version 3 of
-   (at your option) any later version.
+   the License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   gnulib is distributed in the hope that it will be useful, but
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   GNU General Public License for more details.
+   General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU General Public
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   License along with gnulib; if not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef _@GUARD_PREFIX@_GETOPT_H
 
@@ -32,230 +34,28 @@
 # undef _GL_SYSTEM_GETOPT
 #endif
 
-#ifndef _@GUARD_PREFIX@_GETOPT_H
+#define _@GUARD_PREFIX@_GETOPT_H 1
-
-#ifndef __need_getopt
-# define _@GUARD_PREFIX@_GETOPT_H 1
-#endif
 
 /* Standalone applications should #define __GETOPT_PREFIX to an
    identifier that prefixes the external functions and variables
-   defined in this header.  When this happens, include the
+   defined in getopt-core.h and getopt-ext.h.  When this happens,
-   headers that might declare getopt so that they will not cause
+   include the headers that might declare getopt so that they will not
-   confusion if included after this file (if the system had <getopt.h>,
+   cause confusion if included after this file (if the system had
-   we have already included it).  Then systematically rename
+   <getopt.h>, we have already included it).  */
-   identifiers so that they do not collide with the system functions
-   and variables.  Renaming avoids problems with some compilers and
-   linkers.  */
 #if defined __GETOPT_PREFIX
-# if !defined __need_getopt
+# if !@HAVE_GETOPT_H@
-#  if !@HAVE_GETOPT_H@
+#  define __need_system_stdlib_h
-#   define __need_system_stdlib_h
+#  include <stdlib.h>
-#   include <stdlib.h>
+#  undef __need_system_stdlib_h
-#   undef __need_system_stdlib_h
+#  include <stdio.h>
-#   include <stdio.h>
+#  include <unistd.h>
-#   include <unistd.h>
-#  endif
-#  undef __need_getopt
-# endif
-# undef __GETOPT_CONCAT
-# undef __GETOPT_XCONCAT
-# undef __GETOPT_ID
-# undef getopt
-# undef getopt_long
-# undef getopt_long_only
-# undef optarg
-# undef opterr
-# undef optind
-# undef optopt
-# undef option
-# undef _getopt_internal
-# define __GETOPT_CONCAT(x, y) x ## y
-# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
-# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
-# define getopt __GETOPT_ID (getopt)
-# define getopt_long __GETOPT_ID (getopt_long)
-# define getopt_long_only __GETOPT_ID (getopt_long_only)
-# define optarg __GETOPT_ID (optarg)
-# define opterr __GETOPT_ID (opterr)
-# define optind __GETOPT_ID (optind)
-# define optopt __GETOPT_ID (optopt)
-# define option __GETOPT_ID (option)
-# define _getopt_internal __GETOPT_ID (getopt_internal)
-#endif
-
-/* Standalone applications get correct prototypes for getopt_long and
-   getopt_long_only; they declare "char **argv".  libc uses prototypes
-   with "char *const *argv" that are incorrect because getopt_long and
-   getopt_long_only can permute argv; this is required for backward
-   compatibility (e.g., for LSB 2.0.1).
-
-   This used to be '#if defined __GETOPT_PREFIX && !defined __need_getopt',
-   but it caused redefinition warnings if both unistd.h and getopt.h were
-   included, since unistd.h includes getopt.h having previously defined
-   __need_getopt.
-
-   The only place where __getopt_argv_const is used is in definitions
-   of getopt_long and getopt_long_only below, but these are visible
-   only if __need_getopt is not defined, so it is quite safe to rewrite
-   the conditional as follows:
-*/
-#if !defined __need_getopt
-# if defined __GETOPT_PREFIX
-#  define __getopt_argv_const /* empty */
-# else
-#  define __getopt_argv_const const
-# endif
-#endif
-
-/* If __GNU_LIBRARY__ is not already defined, either we are being used
-   standalone, or this is the first header included in the source file.
-   If we are being used with glibc, we need to include <features.h>, but
-   that does not exist if we are standalone.  So: if __GNU_LIBRARY__ is
-   not defined, include <ctype.h>, which will pull in <features.h> for us
-   if it's from glibc.  (Why ctype.h?  It's guaranteed to exist and it
-   doesn't flood the namespace with stuff the way some other headers do.)  */
-#if !defined __GNU_LIBRARY__
-# include <ctype.h>
-#endif
-
-#ifndef __THROW
-# ifndef __GNUC_PREREQ
-#  define __GNUC_PREREQ(maj, min) (0)
-# endif
-# if defined __cplusplus && __GNUC_PREREQ (2,8)
-#  define __THROW       throw ()
-# else
-#  define __THROW
 # endif
 #endif
 
 /* The definition of _GL_ARG_NONNULL is copied here.  */
 
-#ifdef __cplusplus
+#include <getopt-cdefs.h>
-extern "C" {
+#include <getopt-pfx-core.h>
-#endif
+#include <getopt-pfx-ext.h>
-
-/* For communication from 'getopt' to the caller.
-   When 'getopt' finds an option that takes an argument,
-   the argument value is returned here.
-   Also, when 'ordering' is RETURN_IN_ORDER,
-   each non-option ARGV-element is returned here.  */
-
-extern char *optarg;
-
-/* Index in ARGV of the next element to be scanned.
-   This is used for communication to and from the caller
-   and for communication between successive calls to 'getopt'.
-
-   On entry to 'getopt', zero means this is the first call; initialize.
-
-   When 'getopt' returns -1, this is the index of the first of the
-   non-option elements that the caller should itself scan.
-
-   Otherwise, 'optind' communicates from one call to the next
-   how much of ARGV has been scanned so far.  */
-
-extern int optind;
-
-/* Callers store zero here to inhibit the error message 'getopt' prints
-   for unrecognized options.  */
-
-extern int opterr;
-
-/* Set to an option character which was unrecognized.  */
-
-extern int optopt;
-
-#ifndef __need_getopt
-/* Describe the long-named options requested by the application.
-   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
-   of 'struct option' terminated by an element containing a name which is
-   zero.
-
-   The field 'has_arg' is:
-   no_argument          (or 0) if the option does not take an argument,
-   required_argument    (or 1) if the option requires an argument,
-   optional_argument    (or 2) if the option takes an optional argument.
-
-   If the field 'flag' is not NULL, it points to a variable that is set
-   to the value given in the field 'val' when the option is found, but
-   left unchanged if the option is not found.
-
-   To have a long-named option do something other than set an 'int' to
-   a compiled-in constant, such as set a value from 'optarg', set the
-   option's 'flag' field to zero and its 'val' field to a nonzero
-   value (the equivalent single-letter option character, if there is
-   one).  For long options that have a zero 'flag' field, 'getopt'
-   returns the contents of the 'val' field.  */
-
-# if !GNULIB_defined_struct_option
-struct option
-{
-  const char *name;
-  /* has_arg can't be an enum because some compilers complain about
-     type mismatches in all the code that assumes it is an int.  */
-  int has_arg;
-  int *flag;
-  int val;
-};
-#  define GNULIB_defined_struct_option 1
-# endif
-
-/* Names for the values of the 'has_arg' field of 'struct option'.  */
-
-# define no_argument            0
-# define required_argument      1
-# define optional_argument      2
-#endif  /* need getopt */
-
-
-/* Get definitions and prototypes for functions to process the
-   arguments in ARGV (ARGC of them, minus the program name) for
-   options given in OPTS.
-
-   Return the option character from OPTS just read.  Return -1 when
-   there are no more options.  For unrecognized options, or options
-   missing arguments, 'optopt' is set to the option letter, and '?' is
-   returned.
-
-   The OPTS string is a list of characters which are recognized option
-   letters, optionally followed by colons, specifying that that letter
-   takes an argument, to be placed in 'optarg'.
-
-   If a letter in OPTS is followed by two colons, its argument is
-   optional.  This behavior is specific to the GNU 'getopt'.
-
-   The argument '--' causes premature termination of argument
-   scanning, explicitly telling 'getopt' that there are no more
-   options.
-
-   If OPTS begins with '-', then non-option arguments are treated as
-   arguments to the option '\1'.  This behavior is specific to the GNU
-   'getopt'.  If OPTS begins with '+', or POSIXLY_CORRECT is set in
-   the environment, then do not permute arguments.  */
-
-extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
-       __THROW _GL_ARG_NONNULL ((2, 3));
-
-#ifndef __need_getopt
-extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
-                        const char *__shortopts,
-                        const struct option *__longopts, int *__longind)
-       __THROW _GL_ARG_NONNULL ((2, 3));
-extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
-                             const char *__shortopts,
-                             const struct option *__longopts, int *__longind)
-       __THROW _GL_ARG_NONNULL ((2, 3));
-
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-/* Make sure we later can get all the definitions and declarations.  */
-#undef __need_getopt
 
 #endif /* _@GUARD_PREFIX@_GETOPT_H */
-#endif /* _@GUARD_PREFIX@_GETOPT_H */

lib/getopt1.c

@@ -1,56 +1,44 @@
 /* getopt_long and getopt_long_only entry points for GNU getopt.
-   Copyright (C) 1987-1994, 1996-1998, 2004, 2006, 2009-2017 Free Software
+   Copyright (C) 1987-2017 Free Software Foundation, Inc.
-   Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
-   This file is part of the GNU C Library.
+   Patches to this file should be submitted to both projects.
 
-   This program is free software: you can redistribute it and/or modify
+   The GNU C Library is free software; you can redistribute it and/or
-   it under the terms of the GNU General Public License as published by
+   modify it under the terms of the GNU General Public
-   the Free Software Foundation; either version 3 of the License, or
+   License as published by the Free Software Foundation; either
-   (at your option) any later version.
+   version 3 of the License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   GNU General Public License for more details.
+   General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU General Public
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
 
-#ifdef _LIBC
+#ifndef _LIBC
-# include <getopt.h>
-#else
 # include <config.h>
-# include "getopt.h"
 #endif
+
+#include "getopt.h"
 #include "getopt_int.h"
 
-#include <stdio.h>
-
-/* This needs to come after some library #include
-   to get __GNU_LIBRARY__ defined.  */
-#ifdef __GNU_LIBRARY__
-#include <stdlib.h>
-#endif
-
-#ifndef NULL
-#define NULL 0
-#endif
-
 int
 getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
-             const struct option *long_options, int *opt_index)
+	     const struct option *long_options, int *opt_index)
 {
   return _getopt_internal (argc, (char **) argv, options, long_options,
-                           opt_index, 0, 0);
+			   opt_index, 0, 0);
 }
 
 int
 _getopt_long_r (int argc, char **argv, const char *options,
-                const struct option *long_options, int *opt_index,
+		const struct option *long_options, int *opt_index,
-                struct _getopt_data *d)
+		struct _getopt_data *d)
 {
   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
-                             0, d, 0);
+			     0, d, 0);
 }
 
 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
@@ -60,26 +48,27 @@ _getopt_long_r (int argc, char **argv, const char *options,
 
 int
 getopt_long_only (int argc, char *__getopt_argv_const *argv,
-                  const char *options,
+		  const char *options,
-                  const struct option *long_options, int *opt_index)
+		  const struct option *long_options, int *opt_index)
 {
   return _getopt_internal (argc, (char **) argv, options, long_options,
-                           opt_index, 1, 0);
+			   opt_index, 1, 0);
 }
 
 int
 _getopt_long_only_r (int argc, char **argv, const char *options,
-                     const struct option *long_options, int *opt_index,
+		     const struct option *long_options, int *opt_index,
-                     struct _getopt_data *d)
+		     struct _getopt_data *d)
 {
   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
-                             1, d, 0);
+			     1, d, 0);
 }
 
 
 #ifdef TEST
 
 #include <stdio.h>
+#include <stdlib.h>
 
 int
 main (int argc, char **argv)
@@ -93,74 +82,74 @@ main (int argc, char **argv)
       int option_index = 0;
       static const struct option long_options[] =
       {
-        {"add", 1, 0, 0},
+	{"add", 1, 0, 0},
-        {"append", 0, 0, 0},
+	{"append", 0, 0, 0},
-        {"delete", 1, 0, 0},
+	{"delete", 1, 0, 0},
-        {"verbose", 0, 0, 0},
+	{"verbose", 0, 0, 0},
-        {"create", 0, 0, 0},
+	{"create", 0, 0, 0},
-        {"file", 1, 0, 0},
+	{"file", 1, 0, 0},
-        {0, 0, 0, 0}
+	{0, 0, 0, 0}
       };
 
       c = getopt_long (argc, argv, "abc:d:0123456789",
-                       long_options, &option_index);
+		       long_options, &option_index);
       if (c == -1)
-        break;
+	break;
 
       switch (c)
-        {
+	{
-        case 0:
+	case 0:
-          printf ("option %s", long_options[option_index].name);
+	  printf ("option %s", long_options[option_index].name);
-          if (optarg)
+	  if (optarg)
-            printf (" with arg %s", optarg);
+	    printf (" with arg %s", optarg);
-          printf ("\n");
+	  printf ("\n");
-          break;
+	  break;
 
-        case '0':
+	case '0':
-        case '1':
+	case '1':
-        case '2':
+	case '2':
-        case '3':
+	case '3':
-        case '4':
+	case '4':
-        case '5':
+	case '5':
-        case '6':
+	case '6':
-        case '7':
+	case '7':
-        case '8':
+	case '8':
-        case '9':
+	case '9':
-          if (digit_optind != 0 && digit_optind != this_option_optind)
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
-            printf ("digits occur in two different argv-elements.\n");
+	    printf ("digits occur in two different argv-elements.\n");
-          digit_optind = this_option_optind;
+	  digit_optind = this_option_optind;
-          printf ("option %c\n", c);
+	  printf ("option %c\n", c);
-          break;
+	  break;
 
-        case 'a':
+	case 'a':
-          printf ("option a\n");
+	  printf ("option a\n");
-          break;
+	  break;
 
-        case 'b':
+	case 'b':
-          printf ("option b\n");
+	  printf ("option b\n");
-          break;
+	  break;
 
-        case 'c':
+	case 'c':
-          printf ("option c with value '%s'\n", optarg);
+	  printf ("option c with value '%s'\n", optarg);
-          break;
+	  break;
 
-        case 'd':
+	case 'd':
-          printf ("option d with value '%s'\n", optarg);
+	  printf ("option d with value '%s'\n", optarg);
-          break;
+	  break;
 
-        case '?':
+	case '?':
-          break;
+	  break;
 
-        default:
+	default:
-          printf ("?? getopt returned character code 0%o ??\n", c);
+	  printf ("?? getopt returned character code 0%o ??\n", c);
-        }
+	}
     }
 
   if (optind < argc)
     {
       printf ("non-option ARGV-elements: ");
       while (optind < argc)
-        printf ("%s ", argv[optind++]);
+	printf ("%s ", argv[optind++]);
       printf ("\n");
     }
 

lib/getopt_int.h

@@ -1,30 +1,31 @@
 /* Internal declarations for getopt.
-   Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2004, 2009-2017 Free Software
+   Copyright (C) 1989-2017 Free Software Foundation, Inc.
-   Foundation, Inc.
+   This file is part of the GNU C Library and is also part of gnulib.
-   This file is part of the GNU C Library.
+   Patches to this file should be submitted to both projects.
 
-   This program is free software: you can redistribute it and/or modify
+   The GNU C Library is free software; you can redistribute it and/or
-   it under the terms of the GNU General Public License as published by
+   modify it under the terms of the GNU General Public
-   the Free Software Foundation; either version 3 of the License, or
+   License as published by the Free Software Foundation; either
-   (at your option) any later version.
+   version 3 of the License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   GNU General Public License for more details.
+   General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU General Public
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
 
 #ifndef _GETOPT_INT_H
-#define _GETOPT_INT_H   1
+#define _GETOPT_INT_H	1
 
 #include <getopt.h>
 
 extern int _getopt_internal (int ___argc, char **___argv,
-                             const char *__shortopts,
+			     const char *__shortopts,
-                             const struct option *__longopts, int *__longind,
+			     const struct option *__longopts, int *__longind,
-                             int __long_only, int __posixly_correct);
+			     int __long_only, int __posixly_correct);
 
 
 /* Reentrant versions which can handle parsing multiple argument
@@ -32,28 +33,20 @@ extern int _getopt_internal (int ___argc, char **___argv,
 
 /* Describe how to deal with options that follow non-option ARGV-elements.
 
-   If the caller did not specify anything,
+   REQUIRE_ORDER means don't recognize them as options; stop option
-   the default is REQUIRE_ORDER if the environment variable
+   processing when the first non-option is seen.  This is what POSIX
-   POSIXLY_CORRECT is defined, PERMUTE otherwise.
+   specifies should happen.
 
-   REQUIRE_ORDER means don't recognize them as options;
+   PERMUTE means permute the contents of ARGV as we scan, so that
-   stop option processing when the first non-option is seen.
+   eventually all the non-options are at the end.  This allows options
-   This is what Unix does.
+   to be given in any order, even with programs that were not written
-   This mode of operation is selected by either setting the environment
+   to expect this.
-   variable POSIXLY_CORRECT, or using '+' as the first character
-   of the list of option characters, or by calling getopt.
-
-   PERMUTE is the default.  We permute the contents of ARGV as we
-   scan, so that eventually all the non-options are at the end.
-   This allows options to be given in any order, even with programs
-   that were not written to expect this.
 
    RETURN_IN_ORDER is an option available to programs that were
    written to expect options and other ARGV-elements in any order
    and that care about the ordering of the two.  We describe each
    non-option ARGV-element as if it were the argument of an option
-   with character code 1.  Using '-' as the first character of the
+   with character code 1.
-   list of option characters selects this mode of operation.
 
    The special argument '--' forces an end of option-scanning regardless
    of the value of 'ordering'.  In the case of RETURN_IN_ORDER, only
@@ -91,11 +84,6 @@ struct _getopt_data
   /* See __ord above.  */
   enum __ord __ordering;
 
-  /* If the POSIXLY_CORRECT environment variable is set
-     or getopt was called.  */
-  int __posixly_correct;
-
-
   /* Handle permutation of arguments.  */
 
   /* Describe the part of ARGV that contains non-options that have
@@ -104,32 +92,27 @@ struct _getopt_data
 
   int __first_nonopt;
   int __last_nonopt;
-
-#if defined _LIBC && defined USE_NONOPTION_FLAGS
-  int __nonoption_flags_max_len;
-  int __nonoption_flags_len;
-#endif
 };
 
 /* The initializer is necessary to set OPTIND and OPTERR to their
    default values and to clear the initialization flag.  */
-#define _GETOPT_DATA_INITIALIZER        { 1, 1 }
+#define _GETOPT_DATA_INITIALIZER	{ 1, 1 }
 
 extern int _getopt_internal_r (int ___argc, char **___argv,
-                               const char *__shortopts,
+			       const char *__shortopts,
-                               const struct option *__longopts, int *__longind,
+			       const struct option *__longopts, int *__longind,
-                               int __long_only, struct _getopt_data *__data,
+			       int __long_only, struct _getopt_data *__data,
-                               int __posixly_correct);
+			       int __posixly_correct);
 
 extern int _getopt_long_r (int ___argc, char **___argv,
-                           const char *__shortopts,
+			   const char *__shortopts,
-                           const struct option *__longopts, int *__longind,
+			   const struct option *__longopts, int *__longind,
-                           struct _getopt_data *__data);
+			   struct _getopt_data *__data);
 
 extern int _getopt_long_only_r (int ___argc, char **___argv,
-                                const char *__shortopts,
+				const char *__shortopts,
-                                const struct option *__longopts,
+				const struct option *__longopts,
-                                int *__longind,
+				int *__longind,
-                                struct _getopt_data *__data);
+				struct _getopt_data *__data);
 
 #endif /* getopt_int.h */

lib/gettext.h

@@ -18,8 +18,9 @@
 #ifndef _LIBGETTEXT_H
 #define _LIBGETTEXT_H 1
 
-/* NLS can be disabled through the configure --disable-nls option.  */
+/* NLS can be disabled through the configure --disable-nls option
-#if ENABLE_NLS
+   or through "#define ENABLE NLS 0" before including this file.  */
+#if defined ENABLE_NLS && ENABLE_NLS
 
 /* Get declarations of GNU message catalog functions.  */
 # include <libintl.h>
@@ -184,7 +185,8 @@ npgettext_aux (const char *domain,
 #include <string.h>
 
 #if (((__GNUC__ >= 3 || __GNUG__ >= 2) && !defined __STRICT_ANSI__) \
-     /* || __STDC_VERSION__ >= 199901L */ )
+     /* || __STDC_VERSION__ == 199901L
+        || (__STDC_VERSION__ >= 201112L && !defined __STDC_NO_VLA__) */ )
 # define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1
 #else
 # define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 0

lib/gettimeofday.c

@@ -24,93 +24,95 @@
 
 #include <time.h>
 
-#if HAVE_SYS_TIMEB_H
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-# include <sys/timeb.h>
+# define WINDOWS_NATIVE
+# include <windows.h>
 #endif
 
-#if GETTIMEOFDAY_CLOBBERS_LOCALTIME || TZSET_CLOBBERS_LOCALTIME
+#include "localtime-buffer.h"
 
-/* Work around the bug in some systems whereby gettimeofday clobbers
+#ifdef WINDOWS_NATIVE
-   the static buffer that localtime uses for its return value.  The
-   gettimeofday function from Mac OS X 10.0.4 (i.e., Darwin 1.3.7) has
-   this problem.  The tzset replacement is necessary for at least
-   Solaris 2.5, 2.5.1, and 2.6.  */
 
-static struct tm tm_zero_buffer;
+/* GetSystemTimePreciseAsFileTime was introduced only in Windows 8.  */
-static struct tm *localtime_buffer_addr = &tm_zero_buffer;
+typedef void (WINAPI * GetSystemTimePreciseAsFileTimeFuncType) (FILETIME *lpTime);
+static GetSystemTimePreciseAsFileTimeFuncType GetSystemTimePreciseAsFileTimeFunc = NULL;
+static BOOL initialized = FALSE;
 
-# undef localtime
+static void
-extern struct tm *localtime (time_t const *);
+initialize (void)
-
-# undef gmtime
-extern struct tm *gmtime (time_t const *);
-
-/* This is a wrapper for localtime.  It is used only on systems for which
-   gettimeofday clobbers the static buffer used for localtime's result.
-
-   On the first call, record the address of the static buffer that
-   localtime uses for its result.  */
-
-struct tm *
-rpl_localtime (time_t const *timep)
 {
-  struct tm *tm = localtime (timep);
+  HMODULE kernel32 = LoadLibrary ("kernel32.dll");
-
+  if (kernel32 != NULL)
-  if (localtime_buffer_addr == &tm_zero_buffer)
+    {
-    localtime_buffer_addr = tm;
+      GetSystemTimePreciseAsFileTimeFunc =
-
+	(GetSystemTimePreciseAsFileTimeFuncType) GetProcAddress (kernel32, "GetSystemTimePreciseAsFileTime");
-  return tm;
+    }
+  initialized = TRUE;
 }
 
-/* Same as above, since gmtime and localtime use the same buffer.  */
-struct tm *
-rpl_gmtime (time_t const *timep)
-{
-  struct tm *tm = gmtime (timep);
-
-  if (localtime_buffer_addr == &tm_zero_buffer)
-    localtime_buffer_addr = tm;
-
-  return tm;
-}
-
-#endif /* GETTIMEOFDAY_CLOBBERS_LOCALTIME || TZSET_CLOBBERS_LOCALTIME */
-
-#if TZSET_CLOBBERS_LOCALTIME
-
-# undef tzset
-extern void tzset (void);
-
-/* This is a wrapper for tzset, for systems on which tzset may clobber
-   the static buffer used for localtime's result.  */
-void
-rpl_tzset (void)
-{
-  /* Save and restore the contents of the buffer used for localtime's
-     result around the call to tzset.  */
-  struct tm save = *localtime_buffer_addr;
-  tzset ();
-  *localtime_buffer_addr = save;
-}
 #endif
 
 /* This is a wrapper for gettimeofday.  It is used only on systems
    that lack this function, or whose implementation of this function
-   causes problems.  */
+   causes problems.
+   Work around the bug in some systems whereby gettimeofday clobbers
+   the static buffer that localtime uses for its return value.  The
+   gettimeofday function from Mac OS X 10.0.4 (i.e., Darwin 1.3.7) has
+   this problem.  */
 
 int
 gettimeofday (struct timeval *restrict tv, void *restrict tz)
 {
 #undef gettimeofday
-#if HAVE_GETTIMEOFDAY
+#ifdef WINDOWS_NATIVE
-# if GETTIMEOFDAY_CLOBBERS_LOCALTIME
+
+  /* On native Windows, there are two ways to get the current time:
+     GetSystemTimeAsFileTime
+     <https://msdn.microsoft.com/en-us/library/ms724397.aspx>
+     or
+     GetSystemTimePreciseAsFileTime
+     <https://msdn.microsoft.com/en-us/library/hh706895.aspx>.
+     GetSystemTimeAsFileTime produces values that jump by increments of
+     15.627 milliseconds (!) on average.
+     Whereas GetSystemTimePreciseAsFileTime values usually jump by 1 or 2
+     microseconds.
+     More discussion on this topic:
+     <http://www.windowstimestamp.com/description>.  */
+  FILETIME current_time;
+
+  if (!initialized)
+    initialize ();
+  if (GetSystemTimePreciseAsFileTimeFunc != NULL)
+    GetSystemTimePreciseAsFileTimeFunc (&current_time);
+  else
+    GetSystemTimeAsFileTime (&current_time);
+
+  /* Convert from FILETIME to 'struct timeval'.  */
+  /* FILETIME: <https://msdn.microsoft.com/en-us/library/ms724284.aspx> */
+  ULONGLONG since_1601 =
+    ((ULONGLONG) current_time.dwHighDateTime << 32)
+    | (ULONGLONG) current_time.dwLowDateTime;
+  /* Between 1601-01-01 and 1970-01-01 there were 280 normal years and 89 leap
+     years, in total 134774 days.  */
+  ULONGLONG since_1970 =
+    since_1601 - (ULONGLONG) 134774 * (ULONGLONG) 86400 * (ULONGLONG) 10000000;
+  ULONGLONG microseconds_since_1970 = since_1970 / (ULONGLONG) 10;
+  tv->tv_sec = microseconds_since_1970 / (ULONGLONG) 1000000;
+  tv->tv_usec = microseconds_since_1970 % (ULONGLONG) 1000000;
+
+  return 0;
+
+#else
+
+# if HAVE_GETTIMEOFDAY
+#  if GETTIMEOFDAY_CLOBBERS_LOCALTIME
   /* Save and restore the contents of the buffer used for localtime's
      result around the call to gettimeofday.  */
   struct tm save = *localtime_buffer_addr;
-# endif
+#  endif
 
-# if defined timeval /* 'struct timeval' overridden by gnulib?  */
+#  if defined timeval /* 'struct timeval' overridden by gnulib?  */
-#  undef timeval
+#   undef timeval
   struct timeval otv;
   int result = gettimeofday (&otv, (struct timezone *) tz);
   if (result == 0)
@@ -118,25 +120,16 @@ gettimeofday (struct timeval *restrict tv, void *restrict tz)
       tv->tv_sec = otv.tv_sec;
       tv->tv_usec = otv.tv_usec;
     }
-# else
+#  else
   int result = gettimeofday (tv, (struct timezone *) tz);
-# endif
+#  endif
 
-# if GETTIMEOFDAY_CLOBBERS_LOCALTIME
+#  if GETTIMEOFDAY_CLOBBERS_LOCALTIME
   *localtime_buffer_addr = save;
-# endif
+#  endif
 
   return result;
 
-#else
-
-# if HAVE__FTIME
-
-  struct _timeb timebuf;
-  _ftime (&timebuf);
-  tv->tv_sec = timebuf.time;
-  tv->tv_usec = timebuf.millitm * 1000;
-
 # else
 
 #  if !defined OK_TO_USE_1S_CLOCK
@@ -146,9 +139,8 @@ gettimeofday (struct timeval *restrict tv, void *restrict tz)
   tv->tv_sec = time (NULL);
   tv->tv_usec = 0;
 
-# endif
-
   return 0;
 
+# endif
 #endif
 }

lib/intprops.h

@@ -21,7 +21,6 @@
 #define _GL_INTPROPS_H
 
 #include <limits.h>
-#include <verify.h>
 
 /* Return a value with the common real type of E and V and the value of V.  */
 #define _GL_INT_CONVERT(e, v) (0 * (e) + (v))
@@ -80,24 +79,7 @@
 /* This include file assumes that signed types are two's complement without
    padding bits; the above macros have undefined behavior otherwise.
    If this is a problem for you, please let us know how to fix it for your host.
-   As a sanity check, test the assumption for some signed types that
+   This assumption is tested by the intprops-tests module.  */
-   <limits.h> bounds.  */
-verify (TYPE_MINIMUM (signed char) == SCHAR_MIN);
-verify (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
-verify (TYPE_MINIMUM (short int) == SHRT_MIN);
-verify (TYPE_MAXIMUM (short int) == SHRT_MAX);
-verify (TYPE_MINIMUM (int) == INT_MIN);
-verify (TYPE_MAXIMUM (int) == INT_MAX);
-verify (TYPE_MINIMUM (long int) == LONG_MIN);
-verify (TYPE_MAXIMUM (long int) == LONG_MAX);
-#ifdef LLONG_MAX
-verify (TYPE_MINIMUM (long long int) == LLONG_MIN);
-verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
-#endif
-/* Similarly, sanity-check one ISO/IEC TS 18661-1:2014 macro if defined.  */
-#ifdef UINT_WIDTH
-verify (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
-#endif
 
 /* Does the __typeof__ keyword work?  This could be done by
    'configure', but for now it's easier to do it by hand.  */
@@ -237,7 +219,11 @@ verify (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
    : (max) >> (b) < (a))
 
 /* True if __builtin_add_overflow (A, B, P) works when P is non-null.  */
-#define _GL_HAS_BUILTIN_OVERFLOW (5 <= __GNUC__)
+#if 5 <= __GNUC__ && !defined __ICC
+# define _GL_HAS_BUILTIN_OVERFLOW 1
+#else
+# define _GL_HAS_BUILTIN_OVERFLOW 0
+#endif
 
 /* True if __builtin_add_overflow_p (A, B, C) works.  */
 #define _GL_HAS_BUILTIN_OVERFLOW_P (7 <= __GNUC__)
@@ -389,10 +375,10 @@ verify (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
    (_Generic \
     (*(r), \
      signed char: \
-       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned char, \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
                         signed char, SCHAR_MIN, SCHAR_MAX), \
      short int: \
-       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned short int, \
+       _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
                         short int, SHRT_MIN, SHRT_MAX), \
      int: \
        _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
@@ -406,10 +392,10 @@ verify (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
 #else
 # define _GL_INT_OP_WRAPV(a, b, r, op, builtin, overflow) \
    (sizeof *(r) == sizeof (signed char) \
-    ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned char, \
+    ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
                        signed char, SCHAR_MIN, SCHAR_MAX) \
     : sizeof *(r) == sizeof (short int) \
-    ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned short int, \
+    ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
                        short int, SHRT_MIN, SHRT_MAX) \
     : sizeof *(r) == sizeof (int) \
     ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
@@ -431,9 +417,8 @@ verify (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
 
 /* Store the low-order bits of A <op> B into *R, where the operation
    is given by OP.  Use the unsigned type UT for calculation to avoid
-   overflow problems.  *R's type is T, with extremal values TMIN and
+   overflow problems.  *R's type is T, with extrema TMIN and TMAX.
-   TMAX.  T must be a signed integer type.  Return 1 if the result
+   T must be a signed integer type.  Return 1 if the result overflows.  */
-   overflows.  */
 #define _GL_INT_OP_CALC(a, b, r, op, overflow, ut, t, tmin, tmax) \
   (sizeof ((a) op (b)) < sizeof (t) \
    ? _GL_INT_OP_CALC1 ((t) (a), (t) (b), r, op, overflow, ut, t, tmin, tmax) \
@@ -442,17 +427,27 @@ verify (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
   ((overflow (a, b) \
     || (EXPR_SIGNED ((a) op (b)) && ((a) op (b)) < (tmin)) \
     || (tmax) < ((a) op (b))) \
-   ? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t, tmin, tmax), 1) \
+   ? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 1) \
-   : (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t, tmin, tmax), 0))
+   : (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 0))
 
-/* Return A <op> B, where the operation is given by OP.  Use the
+/* Return the low-order bits of A <op> B, where the operation is given
-   unsigned type UT for calculation to avoid overflow problems.
+   by OP.  Use the unsigned type UT for calculation to avoid undefined
-   Convert the result to type T without overflow by subtracting TMIN
+   behavior on signed integer overflow, and convert the result to type T.
-   from large values before converting, and adding it afterwards.
+   UT is at least as wide as T and is no narrower than unsigned int,
-   Compilers can optimize all the operations except OP.  */
+   T is two's complement, and there is no padding or trap representations.
-#define _GL_INT_OP_WRAPV_VIA_UNSIGNED(a, b, op, ut, t, tmin, tmax) \
+   Assume that converting UT to T yields the low-order bits, as is
-  (((ut) (a) op (ut) (b)) <= (tmax) \
+   done in all known two's-complement C compilers.  E.g., see:
-   ? (t) ((ut) (a) op (ut) (b)) \
+   https://gcc.gnu.org/onlinedocs/gcc/Integers-implementation.html
-   : ((t) (((ut) (a) op (ut) (b)) - (tmin)) + (tmin)))
+
+   According to the C standard, converting UT to T yields an
+   implementation-defined result or signal for values outside T's
+   range.  However, code that works around this theoretical problem
+   runs afoul of a compiler bug in Oracle Studio 12.3 x86.  See:
+   http://lists.gnu.org/archive/html/bug-gnulib/2017-04/msg00049.html
+   As the compiler bug is real, don't try to work around the
+   theoretical problem.  */
+
+#define _GL_INT_OP_WRAPV_VIA_UNSIGNED(a, b, op, ut, t) \
+  ((t) ((ut) (a) op (ut) (b)))
 
 #endif /* _GL_INTPROPS_H */

lib/isatty.c

@@ -27,10 +27,16 @@
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 
-#include "msvc-inval.h"
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
 
 /* Get _get_osfhandle().  */
-#include "msvc-nothrow.h"
+#if GNULIB_MSVC_NOTHROW
+# include "msvc-nothrow.h"
+#else
+# include <io.h>
+#endif
 
 static BOOL IsConsoleHandle (HANDLE h)
 {

lib/limits.in.h

@@ -28,6 +28,17 @@
 #ifndef _@GUARD_PREFIX@_LIMITS_H
 #define _@GUARD_PREFIX@_LIMITS_H
 
+/* For HP-UX 11.31.  */
+#if defined LONG_LONG_MIN && !defined LLONG_MIN
+# define LLONG_MIN LONG_LONG_MIN
+#endif
+#if defined LONG_LONG_MAX && !defined LLONG_MAX
+# define LLONG_MAX LONG_LONG_MAX
+#endif
+#if defined ULONG_LONG_MAX && !defined ULLONG_MAX
+# define ULLONG_MAX ULONG_LONG_MAX
+#endif
+
 /* The number of usable bits in an unsigned or signed integer type
    with minimum value MIN and maximum value MAX, as an int expression
    suitable in #if.  Cover all known practical hosts.  This

lib/localcharset.c

@@ -32,7 +32,7 @@
 # define DARWIN7 /* Darwin 7 or newer, i.e. Mac OS X 10.3 or newer */
 #endif
 
-#if defined _WIN32 || defined __WIN32__
+#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
 # define WINDOWS_NATIVE
 # include <locale.h>
 #endif
@@ -75,6 +75,7 @@
 # include "relocatable.h"
 #else
 # define relocate(pathname) (pathname)
+# define relocate2(pathname,allocatedp) (*(allocatedp) = NULL, (pathname))
 #endif
 
 /* Get LIBDIR.  */
@@ -129,6 +130,7 @@ get_charset_aliases (void)
   if (cp == NULL)
     {
 #if !(defined DARWIN7 || defined VMS || defined WINDOWS_NATIVE || defined __CYGWIN__ || defined OS2)
+      char *malloc_dir = NULL;
       const char *dir;
       const char *base = "charset.alias";
       char *file_name;
@@ -137,7 +139,7 @@ get_charset_aliases (void)
          necessary for running the testsuite before "make install".  */
       dir = getenv ("CHARSETALIASDIR");
       if (dir == NULL || dir[0] == '\0')
-        dir = relocate (LIBDIR);
+        dir = relocate2 (LIBDIR, &malloc_dir);
 
       /* Concatenate dir and base into freshly allocated file_name.  */
       {
@@ -154,6 +156,8 @@ get_charset_aliases (void)
           }
       }
 
+      free (malloc_dir);
+
       if (file_name == NULL)
         /* Out of memory.  Treat the file as empty.  */
         cp = "";

lib/localtime-buffer.c

@@ -0,0 +1,58 @@
+/* Provide access to the last buffer returned by localtime() or gmtime().
+
+   Copyright (C) 2001-2003, 2005-2007, 2009-2017 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+/* Specification.  */
+#include "localtime-buffer.h"
+
+#if GETTIMEOFDAY_CLOBBERS_LOCALTIME || TZSET_CLOBBERS_LOCALTIME
+
+static struct tm tm_zero_buffer;
+struct tm *localtime_buffer_addr = &tm_zero_buffer;
+
+/* This is a wrapper for localtime.
+
+   On the first call, record the address of the static buffer that
+   localtime uses for its result.  */
+
+struct tm *
+rpl_localtime (time_t const *timep)
+{
+  struct tm *tm = localtime (timep);
+
+  if (localtime_buffer_addr == &tm_zero_buffer)
+    localtime_buffer_addr = tm;
+
+  return tm;
+}
+
+/* Same as above, since gmtime and localtime use the same buffer.  */
+struct tm *
+rpl_gmtime (time_t const *timep)
+{
+  struct tm *tm = gmtime (timep);
+
+  if (localtime_buffer_addr == &tm_zero_buffer)
+    localtime_buffer_addr = tm;
+
+  return tm;
+}
+
+#endif

lib/localtime-buffer.h

@@ -0,0 +1,27 @@
+/* Provide access to the last buffer returned by localtime() or gmtime().
+
+   Copyright (C) 2001-2003, 2005-2007, 2009-2017 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <time.h>
+
+#if GETTIMEOFDAY_CLOBBERS_LOCALTIME || TZSET_CLOBBERS_LOCALTIME
+
+/* The address of the last buffer returned by localtime() or gmtime().  */
+extern struct tm *localtime_buffer_addr;
+
+#endif

lib/malloca.c

@@ -0,0 +1,159 @@
+/* Safe automatic memory allocation.
+   Copyright (C) 2003, 2006-2007, 2009-2017 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2003.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+
+#define _GL_USE_STDLIB_ALLOC 1
+#include <config.h>
+
+/* Specification.  */
+#include "malloca.h"
+
+#include <stdint.h>
+
+#include "verify.h"
+
+/* Silence a warning from clang's MemorySanitizer.  */
+#if defined __has_feature
+# if __has_feature(memory_sanitizer)
+#  define NO_SANITIZE_MEMORY __attribute__((no_sanitize("memory")))
+# endif
+#endif
+#ifndef NO_SANITIZE_MEMORY
+# define NO_SANITIZE_MEMORY
+#endif
+
+/* The speed critical point in this file is freea() applied to an alloca()
+   result: it must be fast, to match the speed of alloca().  The speed of
+   mmalloca() and freea() in the other case are not critical, because they
+   are only invoked for big memory sizes.  */
+
+#if HAVE_ALLOCA
+
+/* Store the mmalloca() results in a hash table.  This is needed to reliably
+   distinguish a mmalloca() result and an alloca() result.
+
+   Although it is possible that the same pointer is returned by alloca() and
+   by mmalloca() at different times in the same application, it does not lead
+   to a bug in freea(), because:
+     - Before a pointer returned by alloca() can point into malloc()ed memory,
+       the function must return, and once this has happened the programmer must
+       not call freea() on it anyway.
+     - Before a pointer returned by mmalloca() can point into the stack, it
+       must be freed.  The only function that can free it is freea(), and
+       when freea() frees it, it also removes it from the hash table.  */
+
+#define MAGIC_NUMBER 0x1415fb4a
+#define MAGIC_SIZE sizeof (int)
+/* This is how the header info would look like without any alignment
+   considerations.  */
+struct preliminary_header { void *next; int magic; };
+/* But the header's size must be a multiple of sa_alignment_max.  */
+#define HEADER_SIZE \
+  (((sizeof (struct preliminary_header) + sa_alignment_max - 1) / sa_alignment_max) * sa_alignment_max)
+union header {
+  void *next;
+  struct {
+    char room[HEADER_SIZE - MAGIC_SIZE];
+    int word;
+  } magic;
+};
+verify (HEADER_SIZE == sizeof (union header));
+/* We make the hash table quite big, so that during lookups the probability
+   of empty hash buckets is quite high.  There is no need to make the hash
+   table resizable, because when the hash table gets filled so much that the
+   lookup becomes slow, it means that the application has memory leaks.  */
+#define HASH_TABLE_SIZE 257
+static void * mmalloca_results[HASH_TABLE_SIZE];
+
+#endif
+
+void *
+mmalloca (size_t n)
+{
+#if HAVE_ALLOCA
+  /* Allocate one more word, that serves as an indicator for malloc()ed
+     memory, so that freea() of an alloca() result is fast.  */
+  size_t nplus = n + HEADER_SIZE;
+
+  if (nplus >= n)
+    {
+      void *p = malloc (nplus);
+
+      if (p != NULL)
+        {
+          size_t slot;
+          union header *h = p;
+
+          p = h + 1;
+
+          /* Put a magic number into the indicator word.  */
+          h->magic.word = MAGIC_NUMBER;
+
+          /* Enter p into the hash table.  */
+          slot = (uintptr_t) p % HASH_TABLE_SIZE;
+          h->next = mmalloca_results[slot];
+          mmalloca_results[slot] = p;
+
+          return p;
+        }
+    }
+  /* Out of memory.  */
+  return NULL;
+#else
+# if !MALLOC_0_IS_NONNULL
+  if (n == 0)
+    n = 1;
+# endif
+  return malloc (n);
+#endif
+}
+
+#if HAVE_ALLOCA
+void NO_SANITIZE_MEMORY
+freea (void *p)
+{
+  /* mmalloca() may have returned NULL.  */
+  if (p != NULL)
+    {
+      /* Attempt to quickly distinguish the mmalloca() result - which has
+         a magic indicator word - and the alloca() result - which has an
+         uninitialized indicator word.  It is for this test that sa_increment
+         additional bytes are allocated in the alloca() case.  */
+      if (((int *) p)[-1] == MAGIC_NUMBER)
+        {
+          /* Looks like a mmalloca() result.  To see whether it really is one,
+             perform a lookup in the hash table.  */
+          size_t slot = (uintptr_t) p % HASH_TABLE_SIZE;
+          void **chain = &mmalloca_results[slot];
+          for (; *chain != NULL;)
+            {
+              union header *h = p;
+              if (*chain == p)
+                {
+                  /* Found it.  Remove it from the hash table and free it.  */
+                  union header *p_begin = h - 1;
+                  *chain = p_begin->next;
+                  free (p_begin);
+                  return;
+                }
+              h = *chain;
+              chain = &h[-1].next;
+            }
+        }
+      /* At this point, we know it was not a mmalloca() result.  */
+    }
+}
+#endif

lib/malloca.h

@@ -0,0 +1,128 @@
+/* Safe automatic memory allocation.
+   Copyright (C) 2003-2007, 2009-2017 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2003.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _MALLOCA_H
+#define _MALLOCA_H
+
+#include <alloca.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "xalloc-oversized.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* safe_alloca(N) is equivalent to alloca(N) when it is safe to call
+   alloca(N); otherwise it returns NULL.  It either returns N bytes of
+   memory allocated on the stack, that lasts until the function returns,
+   or NULL.
+   Use of safe_alloca should be avoided:
+     - inside arguments of function calls - undefined behaviour,
+     - in inline functions - the allocation may actually last until the
+       calling function returns.
+*/
+#if HAVE_ALLOCA
+/* The OS usually guarantees only one guard page at the bottom of the stack,
+   and a page size can be as small as 4096 bytes.  So we cannot safely
+   allocate anything larger than 4096 bytes.  Also care for the possibility
+   of a few compiler-allocated temporary stack slots.
+   This must be a macro, not a function.  */
+# define safe_alloca(N) ((N) < 4032 ? alloca (N) : NULL)
+#else
+# define safe_alloca(N) ((void) (N), NULL)
+#endif
+
+/* malloca(N) is a safe variant of alloca(N).  It allocates N bytes of
+   memory allocated on the stack, that must be freed using freea() before
+   the function returns.  Upon failure, it returns NULL.  */
+#if HAVE_ALLOCA
+# define malloca(N) \
+  ((N) < 4032 - sa_increment                                        \
+   ? (void *) ((char *) alloca ((N) + sa_increment) + sa_increment) \
+   : mmalloca (N))
+#else
+# define malloca(N) \
+  mmalloca (N)
+#endif
+extern void * mmalloca (size_t n);
+
+/* Free a block of memory allocated through malloca().  */
+#if HAVE_ALLOCA
+extern void freea (void *p);
+#else
+# define freea free
+#endif
+
+/* nmalloca(N,S) is an overflow-safe variant of malloca (N * S).
+   It allocates an array of N objects, each with S bytes of memory,
+   on the stack.  S must be positive and N must be nonnegative.
+   The array must be freed using freea() before the function returns.  */
+#define nmalloca(n, s) (xalloc_oversized (n, s) ? NULL : malloca ((n) * (s)))
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+/* ------------------- Auxiliary, non-public definitions ------------------- */
+
+/* Determine the alignment of a type at compile time.  */
+#if defined __GNUC__ || defined __IBM__ALIGNOF__
+# define sa_alignof __alignof__
+#elif defined __cplusplus
+  template <class type> struct sa_alignof_helper { char __slot1; type __slot2; };
+# define sa_alignof(type) offsetof (sa_alignof_helper<type>, __slot2)
+#elif defined __hpux
+  /* Work around a HP-UX 10.20 cc bug with enums constants defined as offsetof
+     values.  */
+# define sa_alignof(type) (sizeof (type) <= 4 ? 4 : 8)
+#elif defined _AIX
+  /* Work around an AIX 3.2.5 xlc bug with enums constants defined as offsetof
+     values.  */
+# define sa_alignof(type) (sizeof (type) <= 4 ? 4 : 8)
+#else
+# define sa_alignof(type) offsetof (struct { char __slot1; type __slot2; }, __slot2)
+#endif
+
+enum
+{
+/* The desired alignment of memory allocations is the maximum alignment
+   among all elementary types.  */
+  sa_alignment_long = sa_alignof (long),
+  sa_alignment_double = sa_alignof (double),
+#if HAVE_LONG_LONG_INT
+  sa_alignment_longlong = sa_alignof (long long),
+#endif
+  sa_alignment_longdouble = sa_alignof (long double),
+  sa_alignment_max = ((sa_alignment_long - 1) | (sa_alignment_double - 1)
+#if HAVE_LONG_LONG_INT
+                      | (sa_alignment_longlong - 1)
+#endif
+                      | (sa_alignment_longdouble - 1)
+                     ) + 1,
+/* The increment that guarantees room for a magic word must be >= sizeof (int)
+   and a multiple of sa_alignment_max.  */
+  sa_increment = ((sizeof (int) + sa_alignment_max - 1) / sa_alignment_max) * sa_alignment_max
+};
+
+#endif /* _MALLOCA_H */

lib/malloca.valgrind

@@ -0,0 +1,7 @@
+# Suppress a valgrind message about use of uninitialized memory in freea().
+# This use is OK because it provides only a speedup.
+{
+    freea
+    Memcheck:Cond
+    fun:freea
+}

lib/mbrtowc.c

@@ -35,6 +35,13 @@
 # include "streq.h"
 # include "verify.h"
 
+#ifndef FALLTHROUGH
+# if __GNUC__ < 7
+#  define FALLTHROUGH ((void) 0)
+# else
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# endif
+#endif
 
 verify (sizeof (mbstate_t) >= 4);
 
@@ -74,10 +81,10 @@ mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
         break;
       case 3:
         buf[2] = pstate[3];
-        /*FALLTHROUGH*/
+        FALLTHROUGH;
       case 2:
         buf[1] = pstate[2];
-        /*FALLTHROUGH*/
+        FALLTHROUGH;
       case 1:
         buf[0] = pstate[1];
         p = buf;

lib/mbsinit.c

@@ -22,17 +22,7 @@
 
 #include "verify.h"
 
-#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+#if GNULIB_defined_mbstate_t
-
-/* On native Windows, 'mbstate_t' is defined as 'int'.  */
-
-int
-mbsinit (const mbstate_t *ps)
-{
-  return ps == NULL || *ps == 0;
-}
-
-#else
 
 /* Platforms that lack mbsinit() also lack mbrlen(), mbrtowc(), mbsrtowcs()
    and wcrtomb(), wcsrtombs().
@@ -45,6 +35,7 @@ mbsinit (const mbstate_t *ps)
    We define the meaning of mbstate_t as follows:
      - In mb -> wc direction, mbstate_t's first byte contains the number of
        buffered bytes (in the range 0..3), followed by up to 3 buffered bytes.
+       See mbrtowc.c.
      - In wc -> mb direction, mbstate_t contains no information. In other
        words, it is always in the initial state.  */
 
@@ -58,4 +49,25 @@ mbsinit (const mbstate_t *ps)
   return pstate == NULL || pstate[0] == 0;
 }
 
+#else
+
+int
+mbsinit (const mbstate_t *ps)
+{
+# if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+  /* Native Windows.  */
+#  ifdef __MINGW32__
+  /* On mingw, 'mbstate_t' is defined as 'int'.  */
+  return ps == NULL || *ps == 0;
+#  else
+  /* MSVC defines 'mbstate_t' as an 8-byte struct; the first 4-bytes matter.  */
+  return ps == NULL || *(const unsigned int *)ps == 0;
+#  endif
+# else
+  /* Minix, HP-UX 11.00, Solaris 2.6, Interix, ...  */
+  /* Maybe this definition works, maybe not...  */
+  return ps == NULL || *(const char *)ps == 0;
+# endif
+}
+
 #endif

lib/msvc-nothrow.c

@@ -24,7 +24,9 @@
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 
-#include "msvc-inval.h"
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
 
 #undef _get_osfhandle
 

lib/quotearg.c

@@ -54,6 +54,14 @@
 
 #define INT_BITS (sizeof (int) * CHAR_BIT)
 
+#ifndef FALLTHROUGH
+# if __GNUC__ < 7
+#  define FALLTHROUGH ((void) 0)
+# else
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# endif
+#endif
+
 struct quoting_options
 {
   /* Basic quoting style.  */
@@ -310,7 +318,7 @@ quotearg_buffer_restyled (char *buffer, size_t buffersize,
     case c_maybe_quoting_style:
       quoting_style = c_quoting_style;
       elide_outer_quotes = true;
-      /* Fall through.  */
+      FALLTHROUGH;
     case c_quoting_style:
       if (!elide_outer_quotes)
         STORE ('"');
@@ -365,14 +373,14 @@ quotearg_buffer_restyled (char *buffer, size_t buffersize,
 
     case shell_escape_quoting_style:
       backslash_escapes = true;
-      /* Fall through.  */
+      FALLTHROUGH;
     case shell_quoting_style:
       elide_outer_quotes = true;
-      /* Fall through.  */
+      FALLTHROUGH;
     case shell_escape_always_quoting_style:
       if (!elide_outer_quotes)
         backslash_escapes = true;
-      /* Fall through.  */
+      FALLTHROUGH;
     case shell_always_quoting_style:
       quoting_style = shell_always_quoting_style;
       if (!elide_outer_quotes)
@@ -505,7 +513,7 @@ quotearg_buffer_restyled (char *buffer, size_t buffersize,
           if (quoting_style == shell_always_quoting_style
               && elide_outer_quotes)
             goto force_outer_quoting_style;
-          /* Fall through.  */
+          /* fall through */
         c_escape:
           if (backslash_escapes)
             {
@@ -517,14 +525,14 @@ quotearg_buffer_restyled (char *buffer, size_t buffersize,
         case '{': case '}': /* sometimes special if isolated */
           if (! (argsize == SIZE_MAX ? arg[1] == '\0' : argsize == 1))
             break;
-          /* Fall through.  */
+          FALLTHROUGH;
         case '#': case '~':
           if (i != 0)
             break;
-          /* Fall through.  */
+          FALLTHROUGH;
         case ' ':
           c_and_shell_quote_compat = true;
-          /* Fall through.  */
+          FALLTHROUGH;
         case '!': /* special in bash */
         case '"': case '$': case '&':
         case '(': case ')': case '*': case ';':

lib/stat-w32.c

@@ -0,0 +1,421 @@
+/* Core of implementation of fstat and stat for native Windows.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible.  */
+
+#include <config.h>
+
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+
+/* Ensure that <windows.h> defines FILE_ID_INFO.  */
+#undef _WIN32_WINNT
+#define _WIN32_WINNT _WIN32_WINNT_WIN8
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+#include <windows.h>
+
+/* Specification.  */
+#include "stat-w32.h"
+
+#include "pathmax.h"
+#include "verify.h"
+
+#if _GL_WINDOWS_STAT_INODES == 2
+/* GetFileInformationByHandleEx was introduced only in Windows Vista.  */
+typedef DWORD (WINAPI * GetFileInformationByHandleExFuncType) (HANDLE hFile,
+                                                               FILE_INFO_BY_HANDLE_CLASS fiClass,
+                                                               LPVOID lpBuffer,
+                                                               DWORD dwBufferSize);
+static GetFileInformationByHandleExFuncType GetFileInformationByHandleExFunc = NULL;
+#endif
+/* GetFinalPathNameByHandle was introduced only in Windows Vista.  */
+typedef DWORD (WINAPI * GetFinalPathNameByHandleFuncType) (HANDLE hFile,
+                                                           LPTSTR lpFilePath,
+                                                           DWORD lenFilePath,
+                                                           DWORD dwFlags);
+static GetFinalPathNameByHandleFuncType GetFinalPathNameByHandleFunc = NULL;
+static BOOL initialized = FALSE;
+
+static void
+initialize (void)
+{
+  HMODULE kernel32 = LoadLibrary ("kernel32.dll");
+  if (kernel32 != NULL)
+    {
+#if _GL_WINDOWS_STAT_INODES == 2
+      GetFileInformationByHandleExFunc =
+        (GetFileInformationByHandleExFuncType) GetProcAddress (kernel32, "GetFileInformationByHandleEx");
+#endif
+      GetFinalPathNameByHandleFunc =
+        (GetFinalPathNameByHandleFuncType) GetProcAddress (kernel32, "GetFinalPathNameByHandleA");
+    }
+  initialized = TRUE;
+}
+
+/* Converts a FILETIME to GMT time since 1970-01-01 00:00:00.  */
+#if _GL_WINDOWS_STAT_TIMESPEC
+struct timespec
+_gl_convert_FILETIME_to_timespec (const FILETIME *ft)
+{
+  struct timespec result;
+  /* FILETIME: <https://msdn.microsoft.com/en-us/library/ms724284.aspx> */
+  unsigned long long since_1601 =
+    ((unsigned long long) ft->dwHighDateTime << 32)
+    | (unsigned long long) ft->dwLowDateTime;
+  if (since_1601 == 0)
+    {
+      result.tv_sec = 0;
+      result.tv_nsec = 0;
+    }
+  else
+    {
+      /* Between 1601-01-01 and 1970-01-01 there were 280 normal years and 89
+         leap years, in total 134774 days.  */
+      unsigned long long since_1970 =
+        since_1601 - (unsigned long long) 134774 * (unsigned long long) 86400 * (unsigned long long) 10000000;
+      result.tv_sec = since_1970 / (unsigned long long) 10000000;
+      result.tv_nsec = (unsigned long) (since_1970 % (unsigned long long) 10000000) * 100;
+    }
+  return result;
+}
+#else
+time_t
+_gl_convert_FILETIME_to_POSIX (const FILETIME *ft)
+{
+  /* FILETIME: <https://msdn.microsoft.com/en-us/library/ms724284.aspx> */
+  unsigned long long since_1601 =
+    ((unsigned long long) ft->dwHighDateTime << 32)
+    | (unsigned long long) ft->dwLowDateTime;
+  if (since_1601 == 0)
+    return 0;
+  else
+    {
+      /* Between 1601-01-01 and 1970-01-01 there were 280 normal years and 89
+         leap years, in total 134774 days.  */
+      unsigned long long since_1970 =
+        since_1601 - (unsigned long long) 134774 * (unsigned long long) 86400 * (unsigned long long) 10000000;
+      return since_1970 / (unsigned long long) 10000000;
+    }
+}
+#endif
+
+/* Fill *BUF with information about the file designated by H.
+   PATH is the file name, if known, otherwise NULL.
+   Return 0 if successful, or -1 with errno set upon failure.  */
+int
+_gl_fstat_by_handle (HANDLE h, const char *path, struct stat *buf)
+{
+  /* GetFileType
+     <https://msdn.microsoft.com/en-us/library/aa364960.aspx> */
+  DWORD type = GetFileType (h);
+  if (type == FILE_TYPE_DISK)
+    {
+      if (!initialized)
+        initialize ();
+
+      /* st_mode can be determined through
+         GetFileAttributesEx
+         <https://msdn.microsoft.com/en-us/library/aa364946.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa365739.aspx>
+         or through
+         GetFileInformationByHandle
+         <https://msdn.microsoft.com/en-us/library/aa364952.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa363788.aspx>
+         or through
+         GetFileInformationByHandleEx with argument FileBasicInfo
+         <https://msdn.microsoft.com/en-us/library/aa364953.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa364217.aspx>
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+      BY_HANDLE_FILE_INFORMATION info;
+      if (! GetFileInformationByHandle (h, &info))
+        goto failed;
+
+      /* Test for error conditions before starting to fill *buf.  */
+      if (sizeof (buf->st_size) <= 4 && info.nFileSizeHigh > 0)
+        {
+          errno = EOVERFLOW;
+          return -1;
+        }
+
+#if _GL_WINDOWS_STAT_INODES
+      /* st_ino can be determined through
+         GetFileInformationByHandle
+         <https://msdn.microsoft.com/en-us/library/aa364952.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa363788.aspx>
+         as 64 bits, or through
+         GetFileInformationByHandleEx with argument FileIdInfo
+         <https://msdn.microsoft.com/en-us/library/aa364953.aspx>
+         <https://msdn.microsoft.com/en-us/library/hh802691.aspx>
+         as 128 bits.
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_WIN8 or higher.  */
+      /* Experiments show that GetFileInformationByHandleEx does not provide
+         much more information than GetFileInformationByHandle:
+           * The dwVolumeSerialNumber from GetFileInformationByHandle is equal
+             to the low 32 bits of the 64-bit VolumeSerialNumber from
+             GetFileInformationByHandleEx, and is apparently sufficient for
+             identifying the device.
+           * The nFileIndex from GetFileInformationByHandle is equal to the low
+             64 bits of the 128-bit FileId from GetFileInformationByHandleEx,
+             and the high 64 bits of this 128-bit FileId are zero.
+           * On a FAT file system, GetFileInformationByHandleEx fails with error
+             ERROR_INVALID_PARAMETER, whereas GetFileInformationByHandle
+             succeeds.
+           * On a CIFS/SMB file system, GetFileInformationByHandleEx fails with
+             error ERROR_INVALID_LEVEL, whereas GetFileInformationByHandle
+             succeeds.  */
+# if _GL_WINDOWS_STAT_INODES == 2
+      if (GetFileInformationByHandleExFunc != NULL)
+        {
+          FILE_ID_INFO id;
+          if (GetFileInformationByHandleExFunc (h, FileIdInfo, &id, sizeof (id)))
+            {
+              buf->st_dev = id.VolumeSerialNumber;
+              verify (sizeof (ino_t) == sizeof (id.FileId));
+              memcpy (&buf->st_ino, &id.FileId, sizeof (ino_t));
+              goto ino_done;
+            }
+          else
+            {
+              switch (GetLastError ())
+                {
+                case ERROR_INVALID_PARAMETER: /* older Windows version, or FAT */
+                case ERROR_INVALID_LEVEL: /* CIFS/SMB file system */
+                  goto fallback;
+                default:
+                  goto failed;
+                }
+            }
+        }
+     fallback: ;
+      /* Fallback for older Windows versions.  */
+      buf->st_dev = info.dwVolumeSerialNumber;
+      buf->st_ino._gl_ino[0] = ((ULONGLONG) info.nFileIndexHigh << 32) | (ULONGLONG) info.nFileIndexLow;
+      buf->st_ino._gl_ino[1] = 0;
+     ino_done: ;
+# else /* _GL_WINDOWS_STAT_INODES == 1 */
+      buf->st_dev = info.dwVolumeSerialNumber;
+      buf->st_ino = ((ULONGLONG) info.nFileIndexHigh << 32) | (ULONGLONG) info.nFileIndexLow;
+# endif
+#else
+      /* st_ino is not wide enough for identifying a file on a device.
+         Without st_ino, st_dev is pointless.  */
+      buf->st_dev = 0;
+      buf->st_ino = 0;
+#endif
+
+      /* st_mode.  */
+      unsigned int mode =
+        /* XXX How to handle FILE_ATTRIBUTE_REPARSE_POINT ?  */
+        ((info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? _S_IFDIR | S_IEXEC_UGO : _S_IFREG)
+        | S_IREAD_UGO
+        | ((info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) ? 0 : S_IWRITE_UGO);
+      if (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
+        {
+          /* Determine whether the file is executable by looking at the file
+             name suffix.
+             If the file name is already known, use it. Otherwise, for
+             non-empty files, it can be determined through
+             GetFinalPathNameByHandle
+             <https://msdn.microsoft.com/en-us/library/aa364962.aspx>
+             or through
+             GetFileInformationByHandleEx with argument FileNameInfo
+             <https://msdn.microsoft.com/en-us/library/aa364953.aspx>
+             <https://msdn.microsoft.com/en-us/library/aa364388.aspx>
+             Both require -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+          if (info.nFileSizeHigh > 0 || info.nFileSizeLow > 0)
+            {
+              char fpath[PATH_MAX];
+              if (path != NULL
+                  || (GetFinalPathNameByHandleFunc != NULL
+                      && GetFinalPathNameByHandleFunc (h, fpath, sizeof (fpath), VOLUME_NAME_NONE)
+                         < sizeof (fpath)
+                      && (path = fpath, 1)))
+                {
+                  const char *last_dot = NULL;
+                  const char *p;
+                  for (p = path; *p != '\0'; p++)
+                    if (*p == '.')
+                      last_dot = p;
+                  if (last_dot != NULL)
+                    {
+                      const char *suffix = last_dot + 1;
+                      if (_stricmp (suffix, "exe") == 0
+                          || _stricmp (suffix, "bat") == 0
+                          || _stricmp (suffix, "cmd") == 0
+                          || _stricmp (suffix, "com") == 0)
+                        mode |= S_IEXEC_UGO;
+                    }
+                }
+              else
+                /* Cannot determine file name.  Pretend that it is executable.  */
+                mode |= S_IEXEC_UGO;
+            }
+        }
+      buf->st_mode = mode;
+
+      /* st_nlink can be determined through
+         GetFileInformationByHandle
+         <https://msdn.microsoft.com/en-us/library/aa364952.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa363788.aspx>
+         or through
+         GetFileInformationByHandleEx with argument FileStandardInfo
+         <https://msdn.microsoft.com/en-us/library/aa364953.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa364401.aspx>
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+      buf->st_nlink = (info.nNumberOfLinks > SHRT_MAX ? SHRT_MAX : info.nNumberOfLinks);
+
+      /* There's no easy way to map the Windows SID concept to an integer.  */
+      buf->st_uid = 0;
+      buf->st_gid = 0;
+
+      /* st_rdev is irrelevant for normal files and directories.  */
+      buf->st_rdev = 0;
+
+      /* st_size can be determined through
+         GetFileSizeEx
+         <https://msdn.microsoft.com/en-us/library/aa364957.aspx>
+         or through
+         GetFileAttributesEx
+         <https://msdn.microsoft.com/en-us/library/aa364946.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa365739.aspx>
+         or through
+         GetFileInformationByHandle
+         <https://msdn.microsoft.com/en-us/library/aa364952.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa363788.aspx>
+         or through
+         GetFileInformationByHandleEx with argument FileStandardInfo
+         <https://msdn.microsoft.com/en-us/library/aa364953.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa364401.aspx>
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+      if (sizeof (buf->st_size) <= 4)
+        /* Range check already done above.  */
+        buf->st_size = info.nFileSizeLow;
+      else
+        buf->st_size = ((long long) info.nFileSizeHigh << 32) | (long long) info.nFileSizeLow;
+
+      /* st_atime, st_mtime, st_ctime can be determined through
+         GetFileTime
+         <https://msdn.microsoft.com/en-us/library/ms724320.aspx>
+         or through
+         GetFileAttributesEx
+         <https://msdn.microsoft.com/en-us/library/aa364946.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa365739.aspx>
+         or through
+         GetFileInformationByHandle
+         <https://msdn.microsoft.com/en-us/library/aa364952.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa363788.aspx>
+         or through
+         GetFileInformationByHandleEx with argument FileBasicInfo
+         <https://msdn.microsoft.com/en-us/library/aa364953.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa364217.aspx>
+         The latter requires -D_WIN32_WINNT=_WIN32_WINNT_VISTA or higher.  */
+#if _GL_WINDOWS_STAT_TIMESPEC
+      buf->st_atim = _gl_convert_FILETIME_to_timespec (&info.ftLastAccessTime);
+      buf->st_mtim = _gl_convert_FILETIME_to_timespec (&info.ftLastWriteTime);
+      buf->st_ctim = _gl_convert_FILETIME_to_timespec (&info.ftCreationTime);
+#else
+      buf->st_atime = _gl_convert_FILETIME_to_POSIX (&info.ftLastAccessTime);
+      buf->st_mtime = _gl_convert_FILETIME_to_POSIX (&info.ftLastWriteTime);
+      buf->st_ctime = _gl_convert_FILETIME_to_POSIX (&info.ftCreationTime);
+#endif
+
+      return 0;
+    }
+  else if (type == FILE_TYPE_CHAR || type == FILE_TYPE_PIPE)
+    {
+      buf->st_dev = 0;
+#if _GL_WINDOWS_STAT_INODES == 2
+      buf->st_ino._gl_ino[0] = buf->st_ino._gl_ino[1] = 0;
+#else
+      buf->st_ino = 0;
+#endif
+      buf->st_mode = (type == FILE_TYPE_PIPE ? _S_IFIFO : _S_IFCHR);
+      buf->st_nlink = 1;
+      buf->st_uid = 0;
+      buf->st_gid = 0;
+      buf->st_rdev = 0;
+      if (type == FILE_TYPE_PIPE)
+        {
+          /* PeekNamedPipe
+             <https://msdn.microsoft.com/en-us/library/aa365779.aspx> */
+          DWORD bytes_available;
+          if (PeekNamedPipe (h, NULL, 0, NULL, &bytes_available, NULL))
+            buf->st_size = bytes_available;
+          else
+            buf->st_size = 0;
+        }
+      else
+        buf->st_size = 0;
+#if _GL_WINDOWS_STAT_TIMESPEC
+      buf->st_atim.tv_sec = 0; buf->st_atim.tv_nsec = 0;
+      buf->st_mtim.tv_sec = 0; buf->st_mtim.tv_nsec = 0;
+      buf->st_ctim.tv_sec = 0; buf->st_ctim.tv_nsec = 0;
+#else
+      buf->st_atime = 0;
+      buf->st_mtime = 0;
+      buf->st_ctime = 0;
+#endif
+      return 0;
+    }
+  else
+    {
+      errno = ENOENT;
+      return -1;
+    }
+
+ failed:
+  {
+    DWORD error = GetLastError ();
+    #if 0
+    fprintf (stderr, "_gl_fstat_by_handle error 0x%x\n", (unsigned int) error);
+    #endif
+    switch (error)
+      {
+      case ERROR_ACCESS_DENIED:
+      case ERROR_SHARING_VIOLATION:
+        errno = EACCES;
+        break;
+
+      case ERROR_OUTOFMEMORY:
+        errno = ENOMEM;
+        break;
+
+      case ERROR_WRITE_FAULT:
+      case ERROR_READ_FAULT:
+      case ERROR_GEN_FAILURE:
+        errno = EIO;
+        break;
+
+      default:
+        errno = EINVAL;
+        break;
+      }
+    return -1;
+  }
+}
+
+#else
+
+/* This declaration is solely to ensure that after preprocessing
+   this file is never empty.  */
+typedef int dummy;
+
+#endif

lib/stat-w32.h

@@ -0,0 +1,37 @@
+/* Core of implementation of fstat and stat for native Windows.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _STAT_W32_H
+#define _STAT_W32_H 1
+
+/* Converts a FILETIME to GMT time since 1970-01-01 00:00:00.  */
+#if _GL_WINDOWS_STAT_TIMESPEC
+extern struct timespec _gl_convert_FILETIME_to_timespec (const FILETIME *ft);
+#else
+extern time_t _gl_convert_FILETIME_to_POSIX (const FILETIME *ft);
+#endif
+
+/* Fill *BUF with information about the file designated by H.
+   PATH is the file name, if known, otherwise NULL.
+   Return 0 if successful, or -1 with errno set upon failure.  */
+extern int _gl_fstat_by_handle (HANDLE h, const char *path, struct stat *buf);
+
+/* Bitmasks for st_mode.  */
+#define S_IREAD_UGO  (_S_IREAD | (_S_IREAD >> 3) | (_S_IREAD >> 6))
+#define S_IWRITE_UGO (_S_IWRITE | (_S_IWRITE >> 3) | (_S_IWRITE >> 6))
+#define S_IEXEC_UGO  (_S_IEXEC | (_S_IEXEC >> 3) | (_S_IEXEC >> 6))
+
+#endif /* _STAT_W32_H */

lib/stat.c

@@ -14,7 +14,7 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-/* written by Eric Blake */
+/* Written by Eric Blake and Bruno Haible.  */
 
 /* If the user's config.h happens to include <sys/stat.h>, let it include only
    the system's <sys/stat.h> here, so that orig_stat doesn't recurse to
@@ -28,26 +28,19 @@
 #undef __need_system_sys_stat_h
 
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-# if _GL_WINDOWS_64_BIT_ST_SIZE
+# define WINDOWS_NATIVE
-#  undef stat /* avoid warning on mingw64 with _FILE_OFFSET_BITS=64 */
-#  define stat _stati64
-#  define REPLACE_FUNC_STAT_DIR 1
-#  undef REPLACE_FUNC_STAT_FILE
-# elif REPLACE_FUNC_STAT_FILE
-/* mingw64 has a broken stat() function, based on _stat(), in libmingwex.a.
-   Bypass it.  */
-#  define stat _stat
-#  define REPLACE_FUNC_STAT_DIR 1
-#  undef REPLACE_FUNC_STAT_FILE
-# endif
 #endif
 
+#if !defined WINDOWS_NATIVE
+
 static int
 orig_stat (const char *filename, struct stat *buf)
 {
   return stat (filename, buf);
 }
 
+#endif
+
 /* Specification.  */
 /* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
    eliminates this include because of the preliminary #include <sys/stat.h>
@@ -58,16 +51,42 @@ orig_stat (const char *filename, struct stat *buf)
 #include <limits.h>
 #include <stdbool.h>
 #include <string.h>
-#include "dosname.h"
+#include "filename.h"
+#include "malloca.h"
 #include "verify.h"
 
-#if REPLACE_FUNC_STAT_DIR
+#ifdef WINDOWS_NATIVE
-# include "pathmax.h"
+# define WIN32_LEAN_AND_MEAN
-  /* The only known systems where REPLACE_FUNC_STAT_DIR is needed also
+# include <windows.h>
-     have a constant PATH_MAX.  */
+# include "stat-w32.h"
-# ifndef PATH_MAX
+#endif
-#  error "Please port this replacement to your platform"
+
-# endif
+#ifdef WINDOWS_NATIVE
+/* Return TRUE if the given file name denotes an UNC root.  */
+static BOOL
+is_unc_root (const char *rname)
+{
+  /* Test whether it has the syntax '\\server\share'.  */
+  if (ISSLASH (rname[0]) && ISSLASH (rname[1]))
+    {
+      /* It starts with two slashes.  Find the next slash.  */
+      const char *p = rname + 2;
+      const char *q = p;
+      while (*q != '\0' && !ISSLASH (*q))
+        q++;
+      if (q > p && *q != '\0')
+        {
+          /* Found the next slash at q.  */
+          q++;
+          const char *r = q;
+          while (*r != '\0' && !ISSLASH (*r))
+            r++;
+          if (r > q && *r == '\0')
+            return TRUE;
+        }
+    }
+  return FALSE;
+}
 #endif
 
 /* Store information about NAME into ST.  Work around bugs with
@@ -77,13 +96,319 @@ orig_stat (const char *filename, struct stat *buf)
    correctly.  */
 
 int
-rpl_stat (char const *name, struct stat *st)
+rpl_stat (char const *name, struct stat *buf)
 {
-  int result = orig_stat (name, st);
+#ifdef WINDOWS_NATIVE
-#if REPLACE_FUNC_STAT_FILE
+  /* Fill the fields ourselves, because the original stat function returns
+     values for st_atime, st_mtime, st_ctime that depend on the current time
+     zone.  See
+     <https://lists.gnu.org/archive/html/bug-gnulib/2017-04/msg00134.html>  */
+  /* XXX Should we convert to wchar_t* and prepend '\\?\', in order to work
+     around length limitations
+     <https://msdn.microsoft.com/en-us/library/aa365247.aspx> ?  */
+
+  /* POSIX <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>
+     specifies: "More than two leading <slash> characters shall be treated as
+     a single <slash> character."  */
+  if (ISSLASH (name[0]) && ISSLASH (name[1]) && ISSLASH (name[2]))
+    {
+      name += 2;
+      while (ISSLASH (name[1]))
+        name++;
+    }
+
+  size_t len = strlen (name);
+  size_t drive_prefix_len = (HAS_DEVICE (name) ? 2 : 0);
+
+  /* Remove trailing slashes (except the very first one, at position
+     drive_prefix_len), but remember their presence.  */
+  size_t rlen;
+  bool check_dir = false;
+
+  rlen = len;
+  while (rlen > drive_prefix_len && ISSLASH (name[rlen-1]))
+    {
+      check_dir = true;
+      if (rlen == drive_prefix_len + 1)
+        break;
+      rlen--;
+    }
+
+  /* Handle '' and 'C:'.  */
+  if (!check_dir && rlen == drive_prefix_len)
+    {
+      errno = ENOENT;
+      return -1;
+    }
+
+  /* Handle '\\'.  */
+  if (rlen == 1 && ISSLASH (name[0]) && len >= 2)
+    {
+      errno = ENOENT;
+      return -1;
+    }
+
+  const char *rname;
+  char *malloca_rname;
+  if (rlen == len)
+    {
+      rname = name;
+      malloca_rname = NULL;
+    }
+  else
+    {
+      malloca_rname = malloca (rlen + 1);
+      if (malloca_rname == NULL)
+        {
+          errno = ENOMEM;
+          return -1;
+        }
+      memcpy (malloca_rname, name, rlen);
+      malloca_rname[rlen] = '\0';
+      rname = malloca_rname;
+    }
+
+  /* There are two ways to get at the requested information:
+       - by scanning the parent directory and examining the relevant
+         directory entry,
+       - by opening the file directly.
+     The first approach fails for root directories (e.g. 'C:\') and
+     UNC root directories (e.g. '\\server\share').
+     The second approach fails for some system files (e.g. 'C:\pagefile.sys'
+     and 'C:\hiberfil.sys'): ERROR_SHARING_VIOLATION.
+     The second approach gives more information (in particular, correct
+     st_dev, st_ino, st_nlink fields).
+     So we use the second approach and, as a fallback except for root and
+     UNC root directories, also the first approach.  */
+  {
+    int ret;
+
+    {
+      /* Approach based on the file.  */
+
+      /* Open a handle to the file.
+         CreateFile
+         <https://msdn.microsoft.com/en-us/library/aa363858.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa363874.aspx>  */
+      HANDLE h =
+        CreateFile (rname,
+                    FILE_READ_ATTRIBUTES,
+                    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                    NULL,
+                    OPEN_EXISTING,
+                    /* FILE_FLAG_POSIX_SEMANTICS (treat file names that differ only
+                       in case as different) makes sense only when applied to *all*
+                       filesystem operations.  */
+                    FILE_FLAG_BACKUP_SEMANTICS /* | FILE_FLAG_POSIX_SEMANTICS */,
+                    NULL);
+      if (h != INVALID_HANDLE_VALUE)
+        {
+          ret = _gl_fstat_by_handle (h, rname, buf);
+          CloseHandle (h);
+          goto done;
+        }
+    }
+
+    /* Test for root and UNC root directories.  */
+    if ((rlen == drive_prefix_len + 1 && ISSLASH (rname[drive_prefix_len]))
+        || is_unc_root (rname))
+      goto failed;
+
+    /* Fallback.  */
+    {
+      /* Approach based on the directory entry.  */
+
+      if (strchr (rname, '?') != NULL || strchr (rname, '*') != NULL)
+        {
+          /* Other Windows API functions would fail with error
+             ERROR_INVALID_NAME.  */
+          if (malloca_rname != NULL)
+            freea (malloca_rname);
+          errno = ENOENT;
+          return -1;
+        }
+
+      /* Get the details about the directory entry.  This can be done through
+         FindFirstFile
+         <https://msdn.microsoft.com/en-us/library/aa364418.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa365740.aspx>
+         or through
+         FindFirstFileEx with argument FindExInfoBasic
+         <https://msdn.microsoft.com/en-us/library/aa364419.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa364415.aspx>
+         <https://msdn.microsoft.com/en-us/library/aa365740.aspx>  */
+      WIN32_FIND_DATA info;
+      HANDLE h = FindFirstFile (rname, &info);
+      if (h == INVALID_HANDLE_VALUE)
+        goto failed;
+
+      /* Test for error conditions before starting to fill *buf.  */
+      if (sizeof (buf->st_size) <= 4 && info.nFileSizeHigh > 0)
+        {
+          FindClose (h);
+          if (malloca_rname != NULL)
+            freea (malloca_rname);
+          errno = EOVERFLOW;
+          return -1;
+        }
+
+# if _GL_WINDOWS_STAT_INODES
+      buf->st_dev = 0;
+#  if _GL_WINDOWS_STAT_INODES == 2
+      buf->st_ino._gl_ino[0] = buf->st_ino._gl_ino[1] = 0;
+#  else /* _GL_WINDOWS_STAT_INODES == 1 */
+      buf->st_ino = 0;
+#  endif
+# else
+      /* st_ino is not wide enough for identifying a file on a device.
+         Without st_ino, st_dev is pointless.  */
+      buf->st_dev = 0;
+      buf->st_ino = 0;
+# endif
+
+      /* st_mode.  */
+      unsigned int mode =
+        /* XXX How to handle FILE_ATTRIBUTE_REPARSE_POINT ?  */
+        ((info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? _S_IFDIR | S_IEXEC_UGO : _S_IFREG)
+        | S_IREAD_UGO
+        | ((info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) ? 0 : S_IWRITE_UGO);
+      if (!(info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
+        {
+          /* Determine whether the file is executable by looking at the file
+             name suffix.  */
+          if (info.nFileSizeHigh > 0 || info.nFileSizeLow > 0)
+            {
+              const char *last_dot = NULL;
+              const char *p;
+              for (p = info.cFileName; *p != '\0'; p++)
+                if (*p == '.')
+                  last_dot = p;
+              if (last_dot != NULL)
+                {
+                  const char *suffix = last_dot + 1;
+                  if (_stricmp (suffix, "exe") == 0
+                      || _stricmp (suffix, "bat") == 0
+                      || _stricmp (suffix, "cmd") == 0
+                      || _stricmp (suffix, "com") == 0)
+                    mode |= S_IEXEC_UGO;
+                }
+            }
+        }
+      buf->st_mode = mode;
+
+      /* st_nlink.  Ignore hard links here.  */
+      buf->st_nlink = 1;
+
+      /* There's no easy way to map the Windows SID concept to an integer.  */
+      buf->st_uid = 0;
+      buf->st_gid = 0;
+
+      /* st_rdev is irrelevant for normal files and directories.  */
+      buf->st_rdev = 0;
+
+      /* st_size.  */
+      if (sizeof (buf->st_size) <= 4)
+        /* Range check already done above.  */
+        buf->st_size = info.nFileSizeLow;
+      else
+        buf->st_size = ((long long) info.nFileSizeHigh << 32) | (long long) info.nFileSizeLow;
+
+      /* st_atime, st_mtime, st_ctime.  */
+# if _GL_WINDOWS_STAT_TIMESPEC
+      buf->st_atim = _gl_convert_FILETIME_to_timespec (&info.ftLastAccessTime);
+      buf->st_mtim = _gl_convert_FILETIME_to_timespec (&info.ftLastWriteTime);
+      buf->st_ctim = _gl_convert_FILETIME_to_timespec (&info.ftCreationTime);
+# else
+      buf->st_atime = _gl_convert_FILETIME_to_POSIX (&info.ftLastAccessTime);
+      buf->st_mtime = _gl_convert_FILETIME_to_POSIX (&info.ftLastWriteTime);
+      buf->st_ctime = _gl_convert_FILETIME_to_POSIX (&info.ftCreationTime);
+# endif
+
+      FindClose (h);
+
+      ret = 0;
+    }
+
+   done:
+    if (ret >= 0 && check_dir && !S_ISDIR (buf->st_mode))
+      {
+        errno = ENOTDIR;
+        ret = -1;
+      }
+    if (malloca_rname != NULL)
+      {
+        int saved_errno = errno;
+        freea (malloca_rname);
+        errno = saved_errno;
+      }
+    return ret;
+  }
+
+ failed:
+  {
+    DWORD error = GetLastError ();
+    #if 0
+    fprintf (stderr, "rpl_stat error 0x%x\n", (unsigned int) error);
+    #endif
+
+    if (malloca_rname != NULL)
+      freea (malloca_rname);
+
+    switch (error)
+      {
+      /* Some of these errors probably cannot happen with the specific flags
+         that we pass to CreateFile.  But who knows...  */
+      case ERROR_FILE_NOT_FOUND: /* The last component of rname does not exist.  */
+      case ERROR_PATH_NOT_FOUND: /* Some directory component in rname does not exist.  */
+      case ERROR_BAD_PATHNAME:   /* rname is such as '\\server'.  */
+      case ERROR_BAD_NET_NAME:   /* rname is such as '\\server\nonexistentshare'.  */
+      case ERROR_INVALID_NAME:   /* rname contains wildcards, misplaced colon, etc.  */
+      case ERROR_DIRECTORY:
+        errno = ENOENT;
+        break;
+
+      case ERROR_ACCESS_DENIED:  /* rname is such as 'C:\System Volume Information\foo'.  */
+      case ERROR_SHARING_VIOLATION: /* rname is such as 'C:\pagefile.sys' (second approach only).  */
+                                    /* XXX map to EACCESS or EPERM? */
+        errno = EACCES;
+        break;
+
+      case ERROR_OUTOFMEMORY:
+        errno = ENOMEM;
+        break;
+
+      case ERROR_WRITE_PROTECT:
+        errno = EROFS;
+        break;
+
+      case ERROR_WRITE_FAULT:
+      case ERROR_READ_FAULT:
+      case ERROR_GEN_FAILURE:
+        errno = EIO;
+        break;
+
+      case ERROR_BUFFER_OVERFLOW:
+      case ERROR_FILENAME_EXCED_RANGE:
+        errno = ENAMETOOLONG;
+        break;
+
+      case ERROR_DELETE_PENDING: /* XXX map to EACCESS or EPERM? */
+        errno = EPERM;
+        break;
+
+      default:
+        errno = EINVAL;
+        break;
+      }
+
+    return -1;
+  }
+#else
+  int result = orig_stat (name, buf);
+# if REPLACE_FUNC_STAT_FILE
   /* Solaris 9 mistakenly succeeds when given a non-directory with a
      trailing slash.  */
-  if (result == 0 && !S_ISDIR (st->st_mode))
+  if (result == 0 && !S_ISDIR (buf->st_mode))
     {
       size_t len = strlen (name);
       if (ISSLASH (name[len - 1]))
@@ -92,47 +417,7 @@ rpl_stat (char const *name, struct stat *st)
           return -1;
         }
     }
-#endif /* REPLACE_FUNC_STAT_FILE */
+# endif /* REPLACE_FUNC_STAT_FILE */
-#if REPLACE_FUNC_STAT_DIR
-
-  if (result == -1 && errno == ENOENT)
-    {
-      /* Due to mingw's oddities, there are some directories (like
-         c:\) where stat() only succeeds with a trailing slash, and
-         other directories (like c:\windows) where stat() only
-         succeeds without a trailing slash.  But we want the two to be
-         synonymous, since chdir() manages either style.  Likewise, Mingw also
-         reports ENOENT for names longer than PATH_MAX, when we want
-         ENAMETOOLONG, and for stat("file/"), when we want ENOTDIR.
-         Fortunately, mingw PATH_MAX is small enough for stack
-         allocation.  */
-      char fixed_name[PATH_MAX + 1] = {0};
-      size_t len = strlen (name);
-      bool check_dir = false;
-      verify (PATH_MAX <= 4096);
-      if (PATH_MAX <= len)
-        errno = ENAMETOOLONG;
-      else if (len)
-        {
-          strcpy (fixed_name, name);
-          if (ISSLASH (fixed_name[len - 1]))
-            {
-              check_dir = true;
-              while (len && ISSLASH (fixed_name[len - 1]))
-                fixed_name[--len] = '\0';
-              if (!len)
-                fixed_name[0] = '/';
-            }
-          else
-            fixed_name[len++] = '/';
-          result = orig_stat (fixed_name, st);
-          if (result == 0 && check_dir && !S_ISDIR (st->st_mode))
-            {
-              result = -1;
-              errno = ENOTDIR;
-            }
-        }
-    }
-#endif /* REPLACE_FUNC_STAT_DIR */
   return result;
+#endif
 }

lib/stdalign.in.h

@@ -103,7 +103,7 @@
 # elif ((defined __APPLE__ && defined __MACH__                  \
          ? 4 < __GNUC__ + (1 <= __GNUC_MINOR__)                 \
          : __GNUC__)                                            \
-        || 061200 <= __HP_cc || 061200 <= __HP_aCC                \
+        || (__ia64 && (61200 <= __HP_cc || 61200 <= __HP_aCC)) \
         || __ICC || 0x590 <= __SUNPRO_C || 0x0600 <= __xlC__)
 #  define _Alignas(a) __attribute__ ((__aligned__ (a)))
 # elif 1300 <= _MSC_VER

lib/stdint.in.h

@@ -128,8 +128,13 @@
    Return an unspecified value if BITS == 0, adding a check to pacify
    picky compilers.  */
 
-# define _STDINT_MIN(signed, bits, zero) \
+/* These are separate macros, because if you try to merge these macros into
-    ((signed) ? ~ _STDINT_MAX (signed, bits, zero) : (zero))
+   a single one, HP-UX cc rejects the resulting expression in constant
+   expressions.  */
+# define _STDINT_UNSIGNED_MIN(bits, zero) \
+    (zero)
+# define _STDINT_SIGNED_MIN(bits, zero) \
+    (~ _STDINT_MAX (1, bits, zero))
 
 # define _STDINT_MAX(signed, bits, zero) \
     (((((zero) + 1) << ((bits) ? (bits) - 1 - (signed) : 0)) - 1) * 2 + 1)
@@ -512,15 +517,15 @@ typedef int _verify_intmax_size[sizeof (intmax_t) == sizeof (uintmax_t)
 # undef PTRDIFF_MAX
 # if @APPLE_UNIVERSAL_BUILD@
 #  ifdef _LP64
-#   define PTRDIFF_MIN  _STDINT_MIN (1, 64, 0l)
+#   define PTRDIFF_MIN  _STDINT_SIGNED_MIN (64, 0l)
 #   define PTRDIFF_MAX  _STDINT_MAX (1, 64, 0l)
 #  else
-#   define PTRDIFF_MIN  _STDINT_MIN (1, 32, 0)
+#   define PTRDIFF_MIN  _STDINT_SIGNED_MIN (32, 0)
 #   define PTRDIFF_MAX  _STDINT_MAX (1, 32, 0)
 #  endif
 # else
 #  define PTRDIFF_MIN  \
-    _STDINT_MIN (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
+    _STDINT_SIGNED_MIN (@BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 #  define PTRDIFF_MAX  \
     _STDINT_MAX (1, @BITSIZEOF_PTRDIFF_T@, 0@PTRDIFF_T_SUFFIX@)
 # endif
@@ -528,9 +533,13 @@ typedef int _verify_intmax_size[sizeof (intmax_t) == sizeof (uintmax_t)
 /* sig_atomic_t limits */
 # undef SIG_ATOMIC_MIN
 # undef SIG_ATOMIC_MAX
-# define SIG_ATOMIC_MIN  \
+# if @HAVE_SIGNED_SIG_ATOMIC_T@
-   _STDINT_MIN (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
+#  define SIG_ATOMIC_MIN  \
-                0@SIG_ATOMIC_T_SUFFIX@)
+    _STDINT_SIGNED_MIN (@BITSIZEOF_SIG_ATOMIC_T@, 0@SIG_ATOMIC_T_SUFFIX@)
+# else
+#  define SIG_ATOMIC_MIN  \
+    _STDINT_UNSIGNED_MIN (@BITSIZEOF_SIG_ATOMIC_T@, 0@SIG_ATOMIC_T_SUFFIX@)
+# endif
 # define SIG_ATOMIC_MAX  \
    _STDINT_MAX (@HAVE_SIGNED_SIG_ATOMIC_T@, @BITSIZEOF_SIG_ATOMIC_T@, \
                 0@SIG_ATOMIC_T_SUFFIX@)
@@ -566,16 +575,26 @@ typedef int _verify_intmax_size[sizeof (intmax_t) == sizeof (uintmax_t)
 # endif
 # undef WCHAR_MIN
 # undef WCHAR_MAX
-# define WCHAR_MIN  \
+# if @HAVE_SIGNED_WCHAR_T@
-   _STDINT_MIN (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
+#  define WCHAR_MIN  \
+    _STDINT_SIGNED_MIN (@BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
+# else
+#  define WCHAR_MIN  \
+    _STDINT_UNSIGNED_MIN (@BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
+# endif
 # define WCHAR_MAX  \
    _STDINT_MAX (@HAVE_SIGNED_WCHAR_T@, @BITSIZEOF_WCHAR_T@, 0@WCHAR_T_SUFFIX@)
 
 /* wint_t limits */
 # undef WINT_MIN
 # undef WINT_MAX
-# define WINT_MIN  \
+# if @HAVE_SIGNED_WINT_T@
-   _STDINT_MIN (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
+#  define WINT_MIN  \
+    _STDINT_SIGNED_MIN (@BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
+# else
+#  define WINT_MIN  \
+    _STDINT_UNSIGNED_MIN (@BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
+# endif
 # define WINT_MAX  \
    _STDINT_MAX (@HAVE_SIGNED_WINT_T@, @BITSIZEOF_WINT_T@, 0@WINT_T_SUFFIX@)
 

lib/string.in.h

@@ -74,6 +74,23 @@
 /* The definition of _GL_WARN_ON_USE is copied here.  */
 
 
+/* Clear a block of memory.  The compiler will not delete a call to
+   this function, even if the block is dead after the call.  */
+#if @GNULIB_EXPLICIT_BZERO@
+# if ! @HAVE_EXPLICIT_BZERO@
+_GL_FUNCDECL_SYS (explicit_bzero, void,
+                  (void *__dest, size_t __n) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (explicit_bzero, void, (void *__dest, size_t __n));
+_GL_CXXALIASWARN (explicit_bzero);
+#elif defined GNULIB_POSIXCHECK
+# undef explicit_bzero
+# if HAVE_RAW_DECL_EXPLICIT_BZERO
+_GL_WARN_ON_USE (explicit_bzero, "explicit_bzero is unportable - "
+                 "use gnulib module explicit_bzero for portability");
+# endif
+#endif
+
 /* Find the index of the least-significant set bit.  */
 #if @GNULIB_FFSL@
 # if !@HAVE_FFSL@

lib/sys_stat.in.h

@@ -1,4 +1,4 @@
-/* Provide a more complete sys/stat header file.
+/* Provide a more complete sys/stat.h header file.
    Copyright (C) 2005-2017 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
@@ -72,6 +72,75 @@
 # define stat _stati64
 #endif
 
+/* Optionally, override 'struct stat' on native Windows.  */
+#if @GNULIB_OVERRIDES_STRUCT_STAT@
+
+# undef stat
+# if @GNULIB_STAT@
+#  define stat rpl_stat
+# else
+   /* Provoke a clear link error if stat() is used as a function and
+      module 'stat' is not in use.  */
+#  define stat stat_used_without_requesting_gnulib_module_stat
+# endif
+
+# if !GNULIB_defined_struct_stat
+struct stat
+{
+  dev_t st_dev;
+  ino_t st_ino;
+  mode_t st_mode;
+  nlink_t st_nlink;
+#  if 0
+  uid_t st_uid;
+#  else /* uid_t is not defined by default on native Windows.  */
+  short st_uid;
+#  endif
+#  if 0
+  gid_t st_gid;
+#  else /* gid_t is not defined by default on native Windows.  */
+  short st_gid;
+#  endif
+  dev_t st_rdev;
+  off_t st_size;
+#  if 0
+  blksize_t st_blksize;
+  blkcnt_t st_blocks;
+#  endif
+
+#  if @WINDOWS_STAT_TIMESPEC@
+  struct timespec st_atim;
+  struct timespec st_mtim;
+  struct timespec st_ctim;
+#  else
+  time_t st_atime;
+  time_t st_mtime;
+  time_t st_ctime;
+#  endif
+};
+#  if @WINDOWS_STAT_TIMESPEC@
+#   define st_atime st_atim.tv_sec
+#   define st_mtime st_mtim.tv_sec
+#   define st_ctime st_ctim.tv_sec
+    /* Indicator, for gnulib internal purposes.  */
+#   define _GL_WINDOWS_STAT_TIMESPEC 1
+#  endif
+#  define GNULIB_defined_struct_stat 1
+# endif
+
+/* Other possible values of st_mode.  */
+# if 0
+#  define _S_IFBLK  0x6000
+# endif
+# if 0
+#  define _S_IFLNK  0xA000
+# endif
+# if 0
+#  define _S_IFSOCK 0xC000
+# endif
+
+#endif
+
 #ifndef S_IFIFO
 # ifdef _S_IFIFO
 #  define S_IFIFO _S_IFIFO
@@ -345,6 +414,9 @@ _GL_CXXALIAS_RPL (fstat, int, (int fd, struct stat *buf));
 _GL_CXXALIAS_SYS (fstat, int, (int fd, struct stat *buf));
 # endif
 _GL_CXXALIASWARN (fstat);
+#elif @GNULIB_OVERRIDES_STRUCT_STAT@
+# undef fstat
+# define fstat fstat_used_without_requesting_gnulib_module_fstat
 #elif @WINDOWS_64_BIT_ST_SIZE@
 /* Above, we define stat to _stati64.  */
 # define fstat _fstati64
@@ -378,6 +450,9 @@ _GL_CXXALIAS_SYS (fstatat, int,
                   (int fd, char const *name, struct stat *st, int flags));
 # endif
 _GL_CXXALIASWARN (fstatat);
+#elif @GNULIB_OVERRIDES_STRUCT_STAT@
+# undef fstatat
+# define fstatat fstatat_used_without_requesting_gnulib_module_fstatat
 #elif defined GNULIB_POSIXCHECK
 # undef fstatat
 # if HAVE_RAW_DECL_FSTATAT
@@ -476,6 +551,9 @@ _GL_CXXALIAS_SYS (lstat, int, (const char *name, struct stat *buf));
 # if @HAVE_LSTAT@
 _GL_CXXALIASWARN (lstat);
 # endif
+#elif @GNULIB_OVERRIDES_STRUCT_STAT@
+# undef lstat
+# define lstat lstat_used_without_requesting_gnulib_module_lstat
 #elif defined GNULIB_POSIXCHECK
 # undef lstat
 # if HAVE_RAW_DECL_LSTAT
@@ -625,63 +703,69 @@ _GL_WARN_ON_USE (mknodat, "mknodat is not portable - "
 
 #if @GNULIB_STAT@
 # if @REPLACE_STAT@
-/* We can't use the object-like #define stat rpl_stat, because of
+#  if !@GNULIB_OVERRIDES_STRUCT_STAT@
-   struct stat.  This means that rpl_stat will not be used if the user
+    /* We can't use the object-like #define stat rpl_stat, because of
-   does (stat)(a,b).  Oh well.  */
+       struct stat.  This means that rpl_stat will not be used if the user
-#  if defined _AIX && defined stat && defined _LARGE_FILES
+       does (stat)(a,b).  Oh well.  */
-    /* With _LARGE_FILES defined, AIX (only) defines stat to stat64,
+#   if defined _AIX && defined stat && defined _LARGE_FILES
-       so we have to replace stat64() instead of stat(). */
+     /* With _LARGE_FILES defined, AIX (only) defines stat to stat64,
-#   undef stat64
+        so we have to replace stat64() instead of stat(). */
-#   define stat64(name, st) rpl_stat (name, st)
+#    undef stat64
-#  elif @WINDOWS_64_BIT_ST_SIZE@
+#    define stat64(name, st) rpl_stat (name, st)
-    /* Above, we define stat to _stati64.  */
+#   elif @WINDOWS_64_BIT_ST_SIZE@
-#   if defined __MINGW32__ && defined _stati64
+     /* Above, we define stat to _stati64.  */
-#    ifndef _USE_32BIT_TIME_T
+#    if defined __MINGW32__ && defined _stati64
-      /* The system headers define _stati64 to _stat64.  */
+#     ifndef _USE_32BIT_TIME_T
-#     undef _stat64
+       /* The system headers define _stati64 to _stat64.  */
-#     define _stat64(name, st) rpl_stat (name, st)
+#      undef _stat64
+#      define _stat64(name, st) rpl_stat (name, st)
+#     endif
+#    elif defined _MSC_VER && defined _stati64
+#     ifdef _USE_32BIT_TIME_T
+       /* The system headers define _stati64 to _stat32i64.  */
+#      undef _stat32i64
+#      define _stat32i64(name, st) rpl_stat (name, st)
+#     else
+       /* The system headers define _stati64 to _stat64.  */
+#      undef _stat64
+#      define _stat64(name, st) rpl_stat (name, st)
+#     endif
+#    else
+#     undef _stati64
+#     define _stati64(name, st) rpl_stat (name, st)
 #    endif
-#   elif defined _MSC_VER && defined _stati64
+#   elif defined __MINGW32__ && defined stat
 #    ifdef _USE_32BIT_TIME_T
-      /* The system headers define _stati64 to _stat32i64.  */
+      /* The system headers define stat to _stat32i64.  */
 #     undef _stat32i64
 #     define _stat32i64(name, st) rpl_stat (name, st)
 #    else
-      /* The system headers define _stati64 to _stat64.  */
+      /* The system headers define stat to _stat64.  */
 #     undef _stat64
 #     define _stat64(name, st) rpl_stat (name, st)
 #    endif
-#   else
+#   elif defined _MSC_VER && defined stat
-#    undef _stati64
+#    ifdef _USE_32BIT_TIME_T
-#    define _stati64(name, st) rpl_stat (name, st)
+      /* The system headers define stat to _stat32.  */
-#   endif
+#     undef _stat32
-#  elif defined __MINGW32__ && defined stat
+#     define _stat32(name, st) rpl_stat (name, st)
-#   ifdef _USE_32BIT_TIME_T
+#    else
-     /* The system headers define stat to _stat32i64.  */
+      /* The system headers define stat to _stat64i32.  */
-#    undef _stat32i64
+#     undef _stat64i32
-#    define _stat32i64(name, st) rpl_stat (name, st)
+#     define _stat64i32(name, st) rpl_stat (name, st)
-#   else
+#    endif
-     /* The system headers define stat to _stat64.  */
+#   else /* !(_AIX || __MINGW32__ || _MSC_VER) */
-#    undef _stat64
+#    undef stat
-#    define _stat64(name, st) rpl_stat (name, st)
+#    define stat(name, st) rpl_stat (name, st)
-#   endif
+#   endif /* !_LARGE_FILES */
-#  elif defined _MSC_VER && defined stat
+#  endif /* !@GNULIB_OVERRIDES_STRUCT_STAT@ */
-#   ifdef _USE_32BIT_TIME_T
-     /* The system headers define stat to _stat32.  */
-#    undef _stat32
-#    define _stat32(name, st) rpl_stat (name, st)
-#   else
-     /* The system headers define stat to _stat64i32.  */
-#    undef _stat64i32
-#    define _stat64i32(name, st) rpl_stat (name, st)
-#   endif
-#  else /* !(_AIX ||__MINGW32__ ||  _MSC_VER) */
-#   undef stat
-#   define stat(name, st) rpl_stat (name, st)
-#  endif /* !_LARGE_FILES */
 _GL_EXTERN_C int stat (const char *name, struct stat *buf)
                       _GL_ARG_NONNULL ((1, 2));
 # endif
+#elif @GNULIB_OVERRIDES_STRUCT_STAT@
+/* see above:
+  #define stat stat_used_without_requesting_gnulib_module_stat
+ */
 #elif defined GNULIB_POSIXCHECK
 # undef stat
 # if HAVE_RAW_DECL_STAT

lib/sys_types.in.h

@@ -42,6 +42,48 @@
 # define _GL_WINDOWS_64_BIT_OFF_T 1
 #endif
 
+/* Override dev_t and ino_t if distinguishable inodes support is requested
+   on native Windows.  */
+#if @WINDOWS_STAT_INODES@
+
+# if @WINDOWS_STAT_INODES@ == 2
+/* Experimental, not useful in Windows 10.  */
+
+/* Define dev_t to a 64-bit type.  */
+#  if !defined GNULIB_defined_dev_t
+typedef unsigned long long int rpl_dev_t;
+#   undef dev_t
+#   define dev_t rpl_dev_t
+#   define GNULIB_defined_dev_t 1
+#  endif
+
+/* Define ino_t to a 128-bit type.  */
+#  if !defined GNULIB_defined_ino_t
+/* MSVC does not have a 128-bit integer type.
+   GCC has a 128-bit integer type __int128, but only on 64-bit targets.  */
+typedef struct { unsigned long long int _gl_ino[2]; } rpl_ino_t;
+#   undef ino_t
+#   define ino_t rpl_ino_t
+#   define GNULIB_defined_ino_t 1
+#  endif
+
+# else /* @WINDOWS_STAT_INODES@ == 1 */
+
+/* Define ino_t to a 64-bit type.  */
+#  if !defined GNULIB_defined_ino_t
+typedef unsigned long long int rpl_ino_t;
+#   undef ino_t
+#   define ino_t rpl_ino_t
+#   define GNULIB_defined_ino_t 1
+#  endif
+
+# endif
+
+/* Indicator, for gnulib internal purposes.  */
+# define _GL_WINDOWS_STAT_INODES @WINDOWS_STAT_INODES@
+
+#endif
+
 /* MSVC 9 defines size_t in <stddef.h>, not in <sys/types.h>.  */
 /* But avoid namespace pollution on glibc systems.  */
 #if ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) \

lib/tempname.c

@@ -279,7 +279,7 @@ try_nocreate (char *tmpl, void *flags _GL_UNUSED)
 {
   struct_stat64 st;
 
-  if (__lxstat64 (_STAT_VER, tmpl, &st) == 0)
+  if (__lxstat64 (_STAT_VER, tmpl, &st) == 0 || errno == EOVERFLOW)
     __set_errno (EEXIST);
   return errno == ENOENT ? 0 : -1;
 }

lib/time.in.h

@@ -120,6 +120,24 @@ _GL_CXXALIAS_SYS (nanosleep, int,
 _GL_CXXALIASWARN (nanosleep);
 # endif
 
+/* Initialize time conversion information.  */
+# if @GNULIB_TZSET@
+#  if @REPLACE_TZSET@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef tzset
+#    define tzset rpl_tzset
+#   endif
+_GL_FUNCDECL_RPL (tzset, void, (void));
+_GL_CXXALIAS_RPL (tzset, void, (void));
+#  else
+#   if ! @HAVE_TZSET@
+_GL_FUNCDECL_SYS (tzset, void, (void));
+#   endif
+_GL_CXXALIAS_SYS (tzset, void, (void));
+#  endif
+_GL_CXXALIASWARN (tzset);
+# endif
+
 /* Return the 'time_t' representation of TP and normalize TP.  */
 # if @GNULIB_MKTIME@
 #  if @REPLACE_MKTIME@
@@ -187,7 +205,7 @@ _GL_CXXALIASWARN (gmtime_r);
 /* Convert TIMER to RESULT, assuming local time and UTC respectively.  See
    <http://www.opengroup.org/susv3xsh/localtime.html> and
    <http://www.opengroup.org/susv3xsh/gmtime.html>.  */
-# if @GNULIB_GETTIMEOFDAY@
+# if @GNULIB_LOCALTIME@ || @REPLACE_LOCALTIME@
 #  if @REPLACE_LOCALTIME@
 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #    undef localtime
@@ -202,7 +220,7 @@ _GL_CXXALIAS_SYS (localtime, struct tm *, (time_t const *__timer));
 _GL_CXXALIASWARN (localtime);
 # endif
 
-# if @GNULIB_GETTIMEOFDAY@
+# if 0 || @REPLACE_GMTIME@
 #  if @REPLACE_GMTIME@
 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #    undef gmtime
@@ -233,6 +251,41 @@ _GL_CXXALIAS_SYS (strptime, char *, (char const *restrict __buf,
 _GL_CXXALIASWARN (strptime);
 # endif
 
+/* Convert *TP to a date and time string.  See
+   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ctime.html>.  */
+# if @GNULIB_CTIME@
+#  if @REPLACE_CTIME@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    define ctime rpl_ctime
+#   endif
+_GL_FUNCDECL_RPL (ctime, char *, (time_t const *__tp)
+                                 _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (ctime, char *, (time_t const *__tp));
+#  else
+_GL_CXXALIAS_SYS (ctime, char *, (time_t const *__tp));
+#  endif
+_GL_CXXALIASWARN (ctime);
+# endif
+
+/* Convert *TP to a date and time string.  See
+   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html>.  */
+# if @GNULIB_STRFTIME@
+#  if @REPLACE_STRFTIME@
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    define strftime rpl_strftime
+#   endif
+_GL_FUNCDECL_RPL (strftime, size_t, (char *__buf, size_t __bufsize,
+                                     const char *__fmt, const struct tm *__tp)
+                                    _GL_ARG_NONNULL ((1, 3, 4)));
+_GL_CXXALIAS_RPL (strftime, size_t, (char *__buf, size_t __bufsize,
+                                     const char *__fmt, const struct tm *__tp));
+#  else
+_GL_CXXALIAS_SYS (strftime, size_t, (char *__buf, size_t __bufsize,
+                                     const char *__fmt, const struct tm *__tp));
+#  endif
+_GL_CXXALIASWARN (strftime);
+# endif
+
 # if defined _GNU_SOURCE && @GNULIB_TIME_RZ@ && ! @HAVE_TIMEZONE_T@
 typedef struct tm_zone *timezone_t;
 _GL_FUNCDECL_SYS (tzalloc, timezone_t, (char const *__name));

lib/unistd.in.h

@@ -127,11 +127,18 @@
 # include <sys/types.h>
 #endif
 
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
 /* Get getopt(), optarg, optind, opterr, optopt.
    But avoid namespace pollution on glibc systems.  */
 #if @GNULIB_UNISTD_H_GETOPT@ && !defined __GLIBC__ && !defined _GL_SYSTEM_GETOPT
-# define __need_getopt
+# include <getopt-cdefs.h>
-# include <getopt.h>
+# include <getopt-pfx-core.h>
 #endif
 
 #ifndef _GL_INLINE_HEADER_BEGIN
@@ -142,13 +149,6 @@ _GL_INLINE_HEADER_BEGIN
 # define _GL_UNISTD_INLINE _GL_INLINE
 #endif
 
-/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
-
-/* The definition of _GL_ARG_NONNULL is copied here.  */
-
-/* The definition of _GL_WARN_ON_USE is copied here.  */
-
-
 /* Hide some function declarations from <winsock2.h>.  */
 
 #if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
@@ -1457,6 +1457,36 @@ _GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
 #endif
 
 
+#if @GNULIB_TRUNCATE@
+/* Change the size of the file designated by FILENAME to become equal to LENGTH.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2008 specification
+   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/truncate.html>.  */
+# if @REPLACE_TRUNCATE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef truncate
+#   define truncate rpl_truncate
+#  endif
+_GL_FUNCDECL_RPL (truncate, int, (const char *filename, off_t length)
+                                 _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (truncate, int, (const char *filename, off_t length));
+# else
+#  if !@HAVE_TRUNCATE@
+_GL_FUNCDECL_SYS (truncate, int, (const char *filename, off_t length)
+                                 _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (truncate, int, (const char *filename, off_t length));
+# endif
+_GL_CXXALIASWARN (truncate);
+#elif defined GNULIB_POSIXCHECK
+# undef truncate
+# if HAVE_RAW_DECL_TRUNCATE
+_GL_WARN_ON_USE (truncate, "truncate is unportable - "
+                 "use gnulib module truncate for portability");
+# endif
+#endif
+
+
 #if @GNULIB_TTYNAME_R@
 /* Store at most BUFLEN characters of the pathname of the terminal FD is
    open on in BUF.  Return 0 on success, otherwise an error number.  */

lib/vasnprintf.c

@@ -118,6 +118,14 @@
 # include "fpucw.h"
 #endif
 
+#ifndef FALLTHROUGH
+# if __GNUC__ < 7
+#  define FALLTHROUGH ((void) 0)
+# else
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# endif
+#endif
+
 /* Default parameters.  */
 #ifndef VASNPRINTF
 # if WIDE_CHAR_VERSION
@@ -156,6 +164,7 @@
 #   define SNPRINTF snwprintf
 #  else
 #   define SNPRINTF _snwprintf
+#   define USE_MSVC__SNPRINTF 1
 #  endif
 # else
    /* Unix.  */
@@ -181,7 +190,9 @@
     /* Here we need to call the native snprintf, not rpl_snprintf.  */
 #   undef snprintf
 #  else
+    /* MSVC versions < 14 did not have snprintf, only _snprintf.  */
 #   define SNPRINTF _snprintf
+#   define USE_MSVC__SNPRINTF 1
 #  endif
 # else
    /* Unix.  */
@@ -208,7 +219,7 @@
 #undef remainder
 #define remainder rem
 
-#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && !WIDE_CHAR_VERSION
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF) && !WIDE_CHAR_VERSION
 # if (HAVE_STRNLEN && !defined _AIX)
 #  define local_strnlen strnlen
 # else
@@ -224,7 +235,7 @@ local_strnlen (const char *string, size_t maxlen)
 # endif
 #endif
 
-#if (((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && WIDE_CHAR_VERSION) || ((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && !WIDE_CHAR_VERSION && DCHAR_IS_TCHAR)) && HAVE_WCHAR_T
+#if (((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF) && WIDE_CHAR_VERSION) || ((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && !WIDE_CHAR_VERSION && DCHAR_IS_TCHAR)) && HAVE_WCHAR_T
 # if HAVE_WCSLEN
 #  define local_wcslen wcslen
 # else
@@ -247,7 +258,7 @@ local_wcslen (const wchar_t *s)
 # endif
 #endif
 
-#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && HAVE_WCHAR_T && WIDE_CHAR_VERSION
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF) && HAVE_WCHAR_T && WIDE_CHAR_VERSION
 # if HAVE_WCSNLEN
 #  define local_wcsnlen wcsnlen
 # else
@@ -1517,7 +1528,7 @@ is_borderline (const char *digits, size_t precision)
 
 #endif
 
-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF
 
 /* Use a different function name, to make it possible that the 'wchar_t'
    parametrization and the 'char' parametrization get compiled in the same
@@ -2392,7 +2403,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                   }
               }
 #endif
-#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T
             else if (dp->conversion == 's'
 # if WIDE_CHAR_VERSION
                      && a.arg[dp->arg_index].type != TYPE_WIDE_STRING
@@ -4591,10 +4602,10 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
 #if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
                 int has_width;
 #endif
-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
                 size_t width;
 #endif
-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || NEED_PRINTF_UNBOUNDED_PRECISION
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || NEED_PRINTF_UNBOUNDED_PRECISION
                 int has_precision;
                 size_t precision;
 #endif
@@ -4623,7 +4634,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
 #if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
                 has_width = 0;
 #endif
-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
                 width = 0;
                 if (dp->width_start != dp->width_end)
                   {
@@ -4657,7 +4668,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                   }
 #endif
 
-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || NEED_PRINTF_UNBOUNDED_PRECISION
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || NEED_PRINTF_UNBOUNDED_PRECISION
                 has_precision = 0;
                 precision = 6;
                 if (dp->precision_start != dp->precision_end)
@@ -4834,7 +4845,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                     *fbp++ = 'l';
 # endif
 #endif
-                    /*FALLTHROUGH*/
+                    FALLTHROUGH;
                   case TYPE_LONGINT:
                   case TYPE_ULONGINT:
 #if HAVE_WINT_T
@@ -4858,7 +4869,10 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
 #endif
                   *fbp = dp->conversion;
 #if USE_SNPRINTF
-# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
+# if ! (((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3))        \
+         && !defined __UCLIBC__)                                            \
+        || (defined __APPLE__ && defined __MACH__)                          \
+        || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
                 fbp[1] = '%';
                 fbp[2] = 'n';
                 fbp[3] = '\0';
@@ -4872,6 +4886,13 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                    in format strings in writable memory may crash the program
                    (if compiled with _FORTIFY_SOURCE=2), so we should avoid it
                    in this situation.  */
+                /* On Mac OS X 10.3 or newer, we know that snprintf's return
+                   value conforms to ISO C 99: the tests gl_SNPRINTF_RETVAL_C99
+                   and gl_SNPRINTF_TRUNCATION_C99 pass.
+                   Therefore we can avoid using %n in this situation.
+                   On Mac OS X 10.13 or newer, the use of %n in format strings
+                   in writable memory by default crashes the program, so we
+                   should avoid it in this situation.  */
                 /* On native Windows systems (such as mingw), we can avoid using
                    %n because:
                      - Although the gl_SNPRINTF_TRUNCATION_C99 test fails,
@@ -5127,7 +5148,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                             /* Look at the snprintf() return value.  */
                             if (retcount < 0)
                               {
-# if !HAVE_SNPRINTF_RETVAL_C99
+# if !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF
                                 /* HP-UX 10.20 snprintf() is doubly deficient:
                                    It doesn't understand the '%n' directive,
                                    *and* it returns -1 (rather than the length

lib/wchar.in.h

@@ -113,12 +113,16 @@
 #  define WEOF -1
 # endif
 #else
-/* mingw and MSVC define wint_t as 'unsigned short' in <crtdefs.h>.
+/* mingw and MSVC define wint_t as 'unsigned short' in <crtdefs.h> or
-   This is too small: ISO C 99 section 7.24.1.(2) says that wint_t must be
+   <stddef.h>.  This is too small: ISO C 99 section 7.24.1.(2) says that
-   "unchanged by default argument promotions".  Override it.  */
+   wint_t must be "unchanged by default argument promotions".  Override it.  */
 # if @GNULIB_OVERRIDES_WINT_T@
 #  if !GNULIB_defined_wint_t
-#   include <crtdefs.h>
+#   if @HAVE_CRTDEFS_H@
+#    include <crtdefs.h>
+#   else
+#    include <stddef.h>
+#   endif
 typedef unsigned int rpl_wint_t;
 #   undef wint_t
 #   define wint_t rpl_wint_t
@@ -1036,6 +1040,38 @@ _GL_WARN_ON_USE (wcswidth, "wcswidth is unportable - "
 #endif
 
 
+/* Convert *TP to a date and time wide string.  See
+   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/wcsftime.html>.  */
+#if @GNULIB_WCSFTIME@
+# if @REPLACE_WCSFTIME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef wcsftime
+#   define wcsftime rpl_wcsftime
+#  endif
+_GL_FUNCDECL_RPL (wcsftime, size_t, (wchar_t *__buf, size_t __bufsize,
+                                     const wchar_t *__fmt, const struct tm *__tp)
+                                    _GL_ARG_NONNULL ((1, 3, 4)));
+_GL_CXXALIAS_RPL (wcsftime, size_t, (wchar_t *__buf, size_t __bufsize,
+                                     const wchar_t *__fmt, const struct tm *__tp));
+# else
+#  if !@HAVE_WCSFTIME@
+_GL_FUNCDECL_SYS (wcsftime, size_t, (wchar_t *__buf, size_t __bufsize,
+                                     const wchar_t *__fmt, const struct tm *__tp)
+                                    _GL_ARG_NONNULL ((1, 3, 4)));
+#  endif
+_GL_CXXALIAS_SYS (wcsftime, size_t, (wchar_t *__buf, size_t __bufsize,
+                                     const wchar_t *__fmt, const struct tm *__tp));
+# endif
+_GL_CXXALIASWARN (wcsftime);
+#elif defined GNULIB_POSIXCHECK
+# undef wcsftime
+# if HAVE_RAW_DECL_WCSFTIME
+_GL_WARN_ON_USE (wcsftime, "wcsftime is unportable - "
+                 "use gnulib module wcsftime for portability");
+# endif
+#endif
+
+
 #endif /* _@GUARD_PREFIX@_WCHAR_H */
 #endif /* _@GUARD_PREFIX@_WCHAR_H */
 #endif

lib/wctype.in.h

@@ -56,11 +56,13 @@
 # include <wchar.h>
 #endif
 
-/* mingw has declarations of towupper and towlower in <ctype.h> as
+/* Native Windows (mingw, MSVC) have declarations of towupper, towlower, and
-   well <wctype.h>.  Include <ctype.h> in advance to avoid rpl_ prefix
+   isw* functions in <ctype.h>, <wchar.h> as well as in <wctype.h>.  Include
-   being added to the declarations.  */
+   <ctype.h>, <wchar.h> in advance to avoid rpl_ prefix being added to the
-#ifdef __MINGW32__
+   declarations.  */
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
 # include <ctype.h>
+# include <wchar.h>
 #endif
 
 /* Include the original <wctype.h> if it exists.
@@ -105,12 +107,16 @@ _GL_INLINE_HEADER_BEGIN
 #  define WEOF -1
 # endif
 #else
-/* mingw and MSVC define wint_t as 'unsigned short' in <crtdefs.h>.
+/* mingw and MSVC define wint_t as 'unsigned short' in <crtdefs.h> or
-   This is too small: ISO C 99 section 7.24.1.(2) says that wint_t must be
+   <stddef.h>.  This is too small: ISO C 99 section 7.24.1.(2) says that
-   "unchanged by default argument promotions".  Override it.  */
+   wint_t must be "unchanged by default argument promotions".  Override it.  */
 # if @GNULIB_OVERRIDES_WINT_T@
 #  if !GNULIB_defined_wint_t
-#   include <crtdefs.h>
+#   if @HAVE_CRTDEFS_H@
+#    include <crtdefs.h>
+#   else
+#    include <stddef.h>
+#   endif
 typedef unsigned int rpl_wint_t;
 #   undef wint_t
 #   define wint_t rpl_wint_t

lib/xalloc-oversized.h

@@ -44,7 +44,7 @@ typedef size_t __xalloc_count_type;
 #if 7 <= __GNUC__
 # define xalloc_oversized(n, s) \
    __builtin_mul_overflow_p (n, s, (__xalloc_count_type) 1)
-#elif 5 <= __GNUC__ && !__STRICT_ANSI__
+#elif 5 <= __GNUC__ && !defined __ICC && !__STRICT_ANSI__
 # define xalloc_oversized(n, s) \
    (__builtin_constant_p (n) && __builtin_constant_p (s) \
     ? __xalloc_oversized (n, s) \

lib/xalloc.h

@@ -194,6 +194,8 @@ x2nrealloc (void *p, size_t *pn, size_t s)
           n = DEFAULT_MXFAST / s;
           n += !n;
         }
+      if (xalloc_oversized (n, s))
+        xalloc_die ();
     }
   else
     {

m4/eealloc.m4

@@ -0,0 +1,31 @@
+# eealloc.m4 serial 3
+dnl Copyright (C) 2003, 2009-2017 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_EEALLOC],
+[
+  AC_REQUIRE([gl_EEMALLOC])
+  AC_REQUIRE([gl_EEREALLOC])
+])
+
+AC_DEFUN([gl_EEMALLOC],
+[
+  _AC_FUNC_MALLOC_IF(
+    [gl_cv_func_malloc_0_nonnull=1],
+    [gl_cv_func_malloc_0_nonnull=0])
+  AC_DEFINE_UNQUOTED([MALLOC_0_IS_NONNULL], [$gl_cv_func_malloc_0_nonnull],
+    [If malloc(0) is != NULL, define this to 1.  Otherwise define this
+     to 0.])
+])
+
+AC_DEFUN([gl_EEREALLOC],
+[
+  _AC_FUNC_REALLOC_IF(
+    [gl_cv_func_realloc_0_nonnull=1],
+    [gl_cv_func_realloc_0_nonnull=0])
+  AC_DEFINE_UNQUOTED([REALLOC_0_IS_NONNULL], [$gl_cv_func_realloc_0_nonnull],
+    [If realloc(NULL,0) is != NULL, define this to 1.  Otherwise define this
+     to 0.])
+])

m4/fcntl-o.m4

@@ -1,4 +1,4 @@
-# fcntl-o.m4 serial 4
+# fcntl-o.m4 serial 5
 dnl Copyright (C) 2006, 2009-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -18,6 +18,7 @@ AC_DEFUN([gl_FCNTL_O_FLAGS],
     [AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])],
     [AC_REQUIRE([AC_GNU_SOURCE])])
 
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
   AC_CHECK_HEADERS_ONCE([unistd.h])
   AC_CHECK_FUNCS_ONCE([symlink])
   AC_CACHE_CHECK([for working fcntl.h], [gl_cv_header_working_fcntl_h],
@@ -116,7 +117,13 @@ AC_DEFUN([gl_FCNTL_O_FLAGS],
         68) gl_cv_header_working_fcntl_h='no (bad O_NOATIME, O_NOFOLLOW)';; #(
          *) gl_cv_header_working_fcntl_h='no';;
         esac],
-       [gl_cv_header_working_fcntl_h=cross-compiling])])
+       [case "$host_os" in
+                  # Guess 'no' on native Windows.
+          mingw*) gl_cv_header_working_fcntl_h='no' ;;
+          *)      gl_cv_header_working_fcntl_h=cross-compiling ;;
+        esac
+       ])
+    ])
 
   case $gl_cv_header_working_fcntl_h in #(
   *O_NOATIME* | no | cross-compiling) ac_val=0;; #(

m4/float_h.m4

@@ -1,4 +1,4 @@
-# float_h.m4 serial 9
+# float_h.m4 serial 11
 dnl Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -14,7 +14,7 @@ AC_DEFUN([gl_FLOAT_H],
     aix* | beos* | openbsd* | mirbsd* | irix*)
       FLOAT_H=float.h
       ;;
-    freebsd*)
+    freebsd* | dragonfly*)
       case "$host_cpu" in
 changequote(,)dnl
         i[34567]86 )
@@ -42,7 +42,7 @@ changequote([,])dnl
       ;;
   esac
   case "$host_os" in
-    aix* | freebsd* | linux*)
+    aix* | freebsd* | dragonfly* | linux*)
       if test -n "$FLOAT_H"; then
         REPLACE_FLOAT_LDBL=1
       fi
@@ -76,7 +76,9 @@ int main ()
                [gl_cv_func_itold_works="guessing no"],
                [gl_cv_func_itold_works="guessing yes"])
              ;;
-           *) gl_cv_func_itold_works="guessing yes" ;;
+                   # Guess yes on native Windows.
+           mingw*) gl_cv_func_itold_works="guessing yes" ;;
+           *)      gl_cv_func_itold_works="guessing yes" ;;
          esac
         ])
     ])

m4/getopt.m4

@@ -1,4 +1,4 @@
-# getopt.m4 serial 44
+# getopt.m4 serial 46
 dnl Copyright (C) 2002-2006, 2008-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -32,9 +32,16 @@ AC_DEFUN([gl_FUNC_GETOPT_POSIX],
 # getopt_long_only.
 AC_DEFUN([gl_FUNC_GETOPT_GNU],
 [
+  dnl Set the variable gl_getopt_required, so that all invocations of
+  dnl gl_GETOPT_CHECK_HEADERS in the scope of the current configure file
+  dnl will check for getopt with GNU extensions.
+  dnl This means that if one gnulib-tool invocation requests getopt-posix
+  dnl and another gnulib-tool invocation requests getopt-gnu, it is as if
+  dnl both had requested getopt-gnu.
   m4_divert_text([INIT_PREPARE], [gl_getopt_required=GNU])
 
-  AC_REQUIRE([gl_FUNC_GETOPT_POSIX])
+  dnl No need to invoke gl_FUNC_GETOPT_POSIX here; this is automatically
+  dnl done through the module dependency getopt-gnu -> getopt-posix.
 ])
 
 # Determine whether to replace the entire getopt facility.
@@ -354,15 +361,19 @@ dnl is ambiguous with environment values that contain newlines.
 
 AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
 [
-  GETOPT_H=getopt.h
+  AC_CHECK_HEADERS_ONCE([sys/cdefs.h])
+  if test $ac_cv_header_sys_cdefs_h = yes; then
+    HAVE_SYS_CDEFS_H=1
+  else
+    HAVE_SYS_CDEFS_H=0
+  fi
+  AC_SUBST([HAVE_SYS_CDEFS_H])
+
   AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
     [Define to rpl_ if the getopt replacement functions and variables
      should be used.])
+  GETOPT_H=getopt.h
+  GETOPT_CDEFS_H=getopt-cdefs.h
   AC_SUBST([GETOPT_H])
-])
+  AC_SUBST([GETOPT_CDEFS_H])
-
-# Prerequisites of lib/getopt*.
-AC_DEFUN([gl_PREREQ_GETOPT],
-[
-  AC_CHECK_DECLS_ONCE([getenv])
 ])

m4/gettimeofday.m4

@@ -1,4 +1,4 @@
-# serial 21
+# serial 24
 
 # Copyright (C) 2001-2003, 2005, 2007, 2009-2017 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -9,9 +9,10 @@ dnl From Jim Meyering.
 
 AC_DEFUN([gl_FUNC_GETTIMEOFDAY],
 [
-  AC_REQUIRE([AC_C_RESTRICT])
-  AC_REQUIRE([gl_HEADER_SYS_TIME_H])
   AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
+  AC_REQUIRE([AC_C_RESTRICT])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_HEADER_SYS_TIME_H])
   AC_CHECK_FUNCS_ONCE([gettimeofday])
 
   gl_gettimeofday_timezone=void
@@ -54,19 +55,11 @@ int gettimeofday (struct timeval *restrict, struct timezone *restrict);
     if test $REPLACE_STRUCT_TIMEVAL = 1; then
       REPLACE_GETTIMEOFDAY=1
     fi
-    m4_ifdef([gl_FUNC_TZSET_CLOBBER], [
+    dnl On mingw, the original gettimeofday has only a precision of 15.6
-      gl_FUNC_TZSET_CLOBBER
+    dnl milliseconds. So override it.
-      case "$gl_cv_func_tzset_clobber" in
+    case "$host_os" in
-        *yes)
+      mingw*) REPLACE_GETTIMEOFDAY=1 ;;
-          REPLACE_GETTIMEOFDAY=1
+    esac
-          gl_GETTIMEOFDAY_REPLACE_LOCALTIME
-          AC_DEFINE([tzset], [rpl_tzset],
-            [Define to rpl_tzset if the wrapper function should be used.])
-          AC_DEFINE([TZSET_CLOBBERS_LOCALTIME], [1],
-            [Define if tzset clobbers localtime's static buffer.])
-          ;;
-      esac
-    ])
   fi
   AC_DEFINE_UNQUOTED([GETTIMEOFDAY_TIMEZONE], [$gl_gettimeofday_timezone],
     [Define this to 'void' or 'struct timezone' to match the system's
@@ -85,6 +78,7 @@ AC_DEFUN([gl_FUNC_GETTIMEOFDAY_CLOBBER],
 [
  AC_REQUIRE([gl_HEADER_SYS_TIME_H])
  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_REQUIRE([gl_LOCALTIME_BUFFER_DEFAULTS])
 
  AC_CACHE_CHECK([whether gettimeofday clobbers localtime buffer],
   [gl_cv_func_gettimeofday_clobber],
@@ -111,6 +105,8 @@ AC_DEFUN([gl_FUNC_GETTIMEOFDAY_CLOBBER],
       case "$host_os" in
                 # Guess all is fine on glibc systems.
         *-gnu*) gl_cv_func_gettimeofday_clobber="guessing no" ;;
+                # Guess no on native Windows.
+        mingw*) gl_cv_func_gettimeofday_clobber="guessing no" ;;
                 # If we don't know, assume the worst.
         *)      gl_cv_func_gettimeofday_clobber="guessing yes" ;;
       esac
@@ -119,20 +115,12 @@ AC_DEFUN([gl_FUNC_GETTIMEOFDAY_CLOBBER],
  case "$gl_cv_func_gettimeofday_clobber" in
    *yes)
      REPLACE_GETTIMEOFDAY=1
-     gl_GETTIMEOFDAY_REPLACE_LOCALTIME
      AC_DEFINE([GETTIMEOFDAY_CLOBBERS_LOCALTIME], [1],
        [Define if gettimeofday clobbers the localtime buffer.])
+     gl_LOCALTIME_BUFFER_NEEDED
      ;;
  esac
 ])
 
-AC_DEFUN([gl_GETTIMEOFDAY_REPLACE_LOCALTIME], [
-  REPLACE_GMTIME=1
-  REPLACE_LOCALTIME=1
-])
-
 # Prerequisites of lib/gettimeofday.c.
-AC_DEFUN([gl_PREREQ_GETTIMEOFDAY], [
+AC_DEFUN([gl_PREREQ_GETTIMEOFDAY], [:])
-  AC_CHECK_HEADERS([sys/timeb.h])
-  AC_CHECK_FUNCS([_ftime])
-])

m4/gnulib-common.m4

@@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 37
+# gnulib-common.m4 serial 38
 dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -256,7 +256,8 @@ AC_DEFUN([gl_PROG_AR_RANLIB],
   dnl library formats. In particular, the GNU binutils programs ar and ranlib
   dnl produce libraries that work only with gcc, not with cc.
   AC_REQUIRE([AC_PROG_CC])
-  AC_BEFORE([$0], [AM_PROG_AR])
+  dnl The '][' hides this use from 'aclocal'.
+  AC_BEFORE([$0], [A][M_PROG_AR])
   AC_CACHE_CHECK([for Minix Amsterdam compiler], [gl_cv_c_amsterdam_compiler],
     [
       AC_EGREP_CPP([Amsterdam],
@@ -288,7 +289,9 @@ Amsterdam
     dnl __ACK__.  It may seem like its easier to avoid calling the macro here,
     dnl but we need to AC_SUBST both AR/ARFLAGS (thus those must have some good
     dnl default value and automake should usually know them).
-    m4_ifdef([AM_PROG_AR], [AM_PROG_AR], [:])
+    dnl
+    dnl The '][' hides this use from 'aclocal'.
+    m4_ifdef([A][M_PROG_AR], [A][M_PROG_AR], [:])
   fi
 
   dnl In case the code above has not helped with setting AR/ARFLAGS, use

m4/gnulib-comp.m4

@@ -60,6 +60,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module extensions:
   # Code from module extern-inline:
   # Code from module fcntl-h:
+  # Code from module filename:
   # Code from module float:
   # Code from module getopt-gnu:
   # Code from module getopt-posix:
@@ -74,9 +75,11 @@ AC_DEFUN([gl_EARLY],
   AC_REQUIRE([AC_SYS_LARGEFILE])
   # Code from module limits-h:
   # Code from module localcharset:
+  # Code from module localtime-buffer:
   # Code from module lstat:
   # Code from module malloc-gnu:
   # Code from module malloc-posix:
+  # Code from module malloca:
   # Code from module mbrtowc:
   # Code from module mbsinit:
   # Code from module memchr:
@@ -184,19 +187,13 @@ AC_SUBST([LTALLOCA])
     AC_LIBOBJ([itold])
   fi
   gl_FUNC_GETOPT_GNU
-  if test $REPLACE_GETOPT = 1; then
+  dnl Because of the way gl_FUNC_GETOPT_GNU is implemented (the gl_getopt_required
-    AC_LIBOBJ([getopt])
+  dnl mechanism), there is no need to do any AC_LIBOBJ or AC_SUBST here; they are
-    AC_LIBOBJ([getopt1])
+  dnl done in the getopt-posix module.
-    gl_PREREQ_GETOPT
-    dnl Arrange for unistd.h to include getopt.h.
-    GNULIB_GL_UNISTD_H_GETOPT=1
-  fi
-  AC_SUBST([GNULIB_GL_UNISTD_H_GETOPT])
   gl_FUNC_GETOPT_POSIX
   if test $REPLACE_GETOPT = 1; then
     AC_LIBOBJ([getopt])
     AC_LIBOBJ([getopt1])
-    gl_PREREQ_GETOPT
     dnl Arrange for unistd.h to include getopt.h.
     GNULIB_GL_UNISTD_H_GETOPT=1
   fi
@@ -222,6 +219,8 @@ AC_SUBST([LTALLOCA])
   gl_LOCALCHARSET
   LOCALCHARSET_TESTS_ENVIRONMENT="CHARSETALIASDIR=\"\$(abs_top_builddir)/$gl_source_base\""
   AC_SUBST([LOCALCHARSET_TESTS_ENVIRONMENT])
+  AC_REQUIRE([gl_LOCALTIME_BUFFER_DEFAULTS])
+  AC_LIBOBJ([localtime-buffer])
   gl_FUNC_LSTAT
   if test $REPLACE_LSTAT = 1; then
     AC_LIBOBJ([lstat])
@@ -238,6 +237,7 @@ AC_SUBST([LTALLOCA])
     AC_LIBOBJ([malloc])
   fi
   gl_STDLIB_MODULE_INDICATOR([malloc-posix])
+  gl_MALLOCA
   gl_FUNC_MBRTOWC
   if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then
     AC_LIBOBJ([mbrtowc])
@@ -283,6 +283,7 @@ AC_SUBST([LTALLOCA])
   if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
     AC_LIBOBJ([msvc-nothrow])
   fi
+  gl_MODULE_INDICATOR([msvc-nothrow])
   gl_MULTIARCH
   gl_PATHMAX
   AC_CHECK_DECLS([program_invocation_name], [], [], [#include <errno.h>])
@@ -311,6 +312,11 @@ AC_SUBST([LTALLOCA])
   gl_FUNC_STAT
   if test $REPLACE_STAT = 1; then
     AC_LIBOBJ([stat])
+    case "$host_os" in
+      mingw*)
+        AC_LIBOBJ([stat-w32])
+        ;;
+    esac
     gl_PREREQ_STAT
   fi
   gl_SYS_STAT_MODULE_INDICATOR([stat])
@@ -527,12 +533,10 @@ AC_DEFUN([gltests_LIBSOURCES], [
 # This macro records the list of files which have been installed by
 # gnulib-tool and may be removed by future gnulib-tool invocations.
 AC_DEFUN([gl_FILE_LIST], [
-  build-aux/snippet/_Noreturn.h
+  lib/_Noreturn.h
-  build-aux/snippet/arg-nonnull.h
-  build-aux/snippet/c++defs.h
-  build-aux/snippet/warn-on-use.h
   lib/alloca.c
   lib/alloca.in.h
+  lib/arg-nonnull.h
   lib/argmatch.c
   lib/argmatch.h
   lib/argp-ba.c
@@ -550,6 +554,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/argp.h
   lib/asnprintf.c
   lib/basename-lgpl.c
+  lib/c++defs.h
   lib/c-ctype.c
   lib/c-ctype.h
   lib/c-strcase.h
@@ -566,9 +571,15 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/exitfail.c
   lib/exitfail.h
   lib/fcntl.in.h
+  lib/filename.h
   lib/float+.h
   lib/float.c
   lib/float.in.h
+  lib/getopt-cdefs.in.h
+  lib/getopt-core.h
+  lib/getopt-ext.h
+  lib/getopt-pfx-core.h
+  lib/getopt-pfx-ext.h
   lib/getopt.c
   lib/getopt.in.h
   lib/getopt1.c
@@ -585,8 +596,13 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/limits.in.h
   lib/localcharset.c
   lib/localcharset.h
+  lib/localtime-buffer.c
+  lib/localtime-buffer.h
   lib/lstat.c
   lib/malloc.c
+  lib/malloca.c
+  lib/malloca.h
+  lib/malloca.valgrind
   lib/mbrtowc.c
   lib/mbsinit.c
   lib/memchr.c
@@ -616,6 +632,8 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/secure_getenv.c
   lib/size_max.h
   lib/sleep.c
+  lib/stat-w32.c
+  lib/stat-w32.h
   lib/stat.c
   lib/stdalign.in.h
   lib/stdbool.in.h
@@ -652,6 +670,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/vasnprintf.h
   lib/verify.h
   lib/vsnprintf.c
+  lib/warn-on-use.h
   lib/wchar.in.h
   lib/wctype-h.c
   lib/wctype.in.h
@@ -669,6 +688,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/configmake.m4
   m4/dirname.m4
   m4/double-slash-root.m4
+  m4/eealloc.m4
   m4/errno_h.m4
   m4/error.m4
   m4/exponentd.m4
@@ -693,9 +713,11 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/locale-fr.m4
   m4/locale-ja.m4
   m4/locale-zh.m4
+  m4/localtime-buffer.m4
   m4/longlong.m4
   m4/lstat.m4
   m4/malloc.m4
+  m4/malloca.m4
   m4/math_h.m4
   m4/mbrtowc.m4
   m4/mbsinit.m4

m4/include_next.m4

@@ -1,4 +1,4 @@
-# include_next.m4 serial 23
+# include_next.m4 serial 24
 dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -6,7 +6,8 @@ dnl with or without modifications, as long as this notice is preserved.
 
 dnl From Paul Eggert and Derek Price.
 
-dnl Sets INCLUDE_NEXT and PRAGMA_SYSTEM_HEADER.
+dnl Sets INCLUDE_NEXT, INCLUDE_NEXT_AS_FIRST_DIRECTIVE, PRAGMA_SYSTEM_HEADER,
+dnl and PRAGMA_COLUMNS.
 dnl
 dnl INCLUDE_NEXT expands to 'include_next' if the compiler supports it, or to
 dnl 'include' otherwise.

m4/largefile.m4

@@ -126,9 +126,24 @@ AC_DEFUN([gl_LARGEFILE],
       else
         WINDOWS_64_BIT_OFF_T=0
       fi
-      dnl But all native Windows platforms (including mingw64) have a 32-bit
+      dnl Some mingw versions define, if _FILE_OFFSET_BITS=64, 'struct stat'
-      dnl st_size member in 'struct stat'.
+      dnl to 'struct _stat32i64' or 'struct _stat64' (depending on
-      WINDOWS_64_BIT_ST_SIZE=1
+      dnl _USE_32BIT_TIME_T), which has a 32-bit st_size member.
+      AC_CACHE_CHECK([for 64-bit st_size], [gl_cv_member_st_size_64],
+        [AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[#include <sys/types.h>
+                struct stat buf;
+                int verify_st_size_size[sizeof (buf.st_size) >= 8 ? 1 : -1];
+              ]],
+              [[]])],
+           [gl_cv_member_st_size_64=yes], [gl_cv_member_st_size_64=no])
+        ])
+      if test $gl_cv_member_st_size_64 = no; then
+        WINDOWS_64_BIT_ST_SIZE=1
+      else
+        WINDOWS_64_BIT_ST_SIZE=0
+      fi
       ;;
     *)
       dnl Nothing to do on gnulib's side.

m4/localtime-buffer.m4

@@ -0,0 +1,21 @@
+# localtime-buffer.m4 serial 1
+dnl Copyright (C) 2017 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_LOCALTIME_BUFFER_DEFAULTS],
+[
+  NEED_LOCALTIME_BUFFER=0
+])
+
+dnl Macro invoked from other modules, to signal that the compilation of
+dnl module 'localtime-buffer' is needed.
+AC_DEFUN([gl_LOCALTIME_BUFFER_NEEDED],
+[
+  AC_REQUIRE([gl_LOCALTIME_BUFFER_DEFAULTS])
+  AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
+  NEED_LOCALTIME_BUFFER=1
+  REPLACE_GMTIME=1
+  REPLACE_LOCALTIME=1
+])

m4/lstat.m4

@@ -1,4 +1,4 @@
-# serial 27
+# serial 29
 
 # Copyright (C) 1997-2001, 2003-2017 Free Software Foundation, Inc.
 #
@@ -33,6 +33,7 @@ AC_DEFUN([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK],
 [
   dnl We don't use AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK any more, because it
   dnl is no longer maintained in Autoconf and because it invokes AC_LIBOBJ.
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
   AC_CACHE_CHECK([whether lstat correctly handles trailing slash],
     [gl_cv_func_lstat_dereferences_slashed_symlink],
     [rm -f conftest.sym conftest.file
@@ -54,6 +55,9 @@ AC_DEFUN([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK],
           *-gnu*)
             # Guess yes on glibc systems.
             gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;;
+          mingw*)
+            # Guess no on native Windows.
+            gl_cv_func_lstat_dereferences_slashed_symlink="guessing no" ;;
           *)
             # If we don't know, assume the worst.
             gl_cv_func_lstat_dereferences_slashed_symlink="guessing no" ;;

m4/malloca.m4

@@ -0,0 +1,15 @@
+# malloca.m4 serial 1
+dnl Copyright (C) 2003-2004, 2006-2007, 2009-2017 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_MALLOCA],
+[
+  dnl Use the autoconf tests for alloca(), but not the AC_SUBSTed variables
+  dnl @ALLOCA@ and @LTALLOCA@.
+  dnl gl_FUNC_ALLOCA   dnl Already brought in by the module dependencies.
+  AC_REQUIRE([gl_EEMALLOC])
+  AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
+])

m4/mbrtowc.m4

@@ -1,4 +1,4 @@
-# mbrtowc.m4 serial 27  -*- coding: utf-8 -*-
+# mbrtowc.m4 serial 29  -*- coding: utf-8 -*-
 dnl Copyright (C) 2001-2002, 2004-2005, 2008-2017 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
@@ -563,9 +563,11 @@ AC_DEFUN([gl_MBRTOWC_EMPTY_INPUT],
       dnl is present.
 changequote(,)dnl
       case "$host_os" in
-                     # Guess no on AIX and glibc systems.
+                    # Guess no on AIX and glibc systems.
         aix* | *-gnu*)
                     gl_cv_func_mbrtowc_empty_input="guessing no" ;;
+                    # Guess yes on native Windows.
+        mingw*)     gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
         *)          gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
       esac
 changequote([,])dnl
@@ -592,6 +594,7 @@ dnl https://sourceware.org/bugzilla/show_bug.cgi?id=19932
 
 AC_DEFUN([gl_MBRTOWC_C_LOCALE],
 [
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
   AC_CACHE_CHECK([whether the C locale is free of encoding errors],
     [gl_cv_C_locale_sans_EILSEQ],
     [
@@ -622,7 +625,12 @@ AC_DEFUN([gl_MBRTOWC_C_LOCALE],
           ]])],
       [gl_cv_C_locale_sans_EILSEQ=yes],
       [gl_cv_C_locale_sans_EILSEQ=no],
-      [:])])
+      [case "$host_os" in
+                 # Guess yes on native Windows.
+         mingw*) gl_cv_C_locale_sans_EILSEQ="guessing yes" ;;
+       esac
+      ])
+    ])
 ])
 
 # Prerequisites of lib/mbrtowc.c.
@@ -639,7 +647,7 @@ AC_DEFUN([AC_FUNC_MBRTOWC],
 [
   dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60.
   AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],
-    gl_cv_func_mbrtowc,
+    [gl_cv_func_mbrtowc],
     [AC_LINK_IFELSE(
        [AC_LANG_PROGRAM(
             [[/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be
@@ -655,8 +663,8 @@ AC_DEFUN([AC_FUNC_MBRTOWC],
               size_t n = 1;
               mbstate_t state;
               return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])],
-       gl_cv_func_mbrtowc=yes,
+       [gl_cv_func_mbrtowc=yes],
-       gl_cv_func_mbrtowc=no)])
+       [gl_cv_func_mbrtowc=no])])
   if test $gl_cv_func_mbrtowc = yes; then
     AC_DEFINE([HAVE_MBRTOWC], [1],
       [Define to 1 if mbrtowc and mbstate_t are properly declared.])

m4/memchr.m4

@@ -1,4 +1,4 @@
-# memchr.m4 serial 12
+# memchr.m4 serial 13
 dnl Copyright (C) 2002-2004, 2009-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -6,6 +6,8 @@ dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN_ONCE([gl_FUNC_MEMCHR],
 [
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
   dnl Check for prerequisites for memory fence checks.
   gl_FUNC_MMAP_ANON
   AC_CHECK_HEADERS_ONCE([sys/mman.h])
@@ -73,12 +75,21 @@ AC_DEFUN_ONCE([gl_FUNC_MEMCHR],
         result |= 4;
     }
   return result;
-]])], [gl_cv_func_memchr_works=yes], [gl_cv_func_memchr_works=no],
+]])],
-      [dnl Be pessimistic for now.
+         [gl_cv_func_memchr_works=yes],
-       gl_cv_func_memchr_works="guessing no"])])
+         [gl_cv_func_memchr_works=no],
-    if test "$gl_cv_func_memchr_works" != yes; then
+         [case "$host_os" in
-      REPLACE_MEMCHR=1
+                    # Guess yes on native Windows.
-    fi
+            mingw*) gl_cv_func_memchr_works="guessing yes" ;;
+                    # Be pessimistic for now.
+            *)      gl_cv_func_memchr_works="guessing no" ;;
+          esac
+         ])
+      ])
+    case "$gl_cv_func_memchr_works" in
+      *yes) ;;
+      *) REPLACE_MEMCHR=1 ;;
+    esac
   fi
 ])
 

m4/mkstemp.m4

@@ -1,4 +1,4 @@
-#serial 23
+#serial 24
 
 # Copyright (C) 2001, 2003-2007, 2009-2017 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -59,6 +59,8 @@ AC_DEFUN([gl_FUNC_MKSTEMP],
           [case "$host_os" in
                      # Guess yes on glibc systems.
              *-gnu*) gl_cv_func_working_mkstemp="guessing yes" ;;
+                     # Guess no on native Windows.
+             mingw*) gl_cv_func_working_mkstemp="guessing no" ;;
                      # If we don't know, assume the worst.
              *)      gl_cv_func_working_mkstemp="guessing no" ;;
            esac

m4/printf.m4

@@ -1,4 +1,4 @@
-# printf.m4 serial 52
+# printf.m4 serial 55
 dnl Copyright (C) 2003, 2007-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -58,8 +58,8 @@ int main ()
         [gl_cv_func_printf_sizes_c99=yes],
         [gl_cv_func_printf_sizes_c99=no],
         [
-changequote(,)dnl
          case "$host_os" in
+changequote(,)dnl
                                  # Guess yes on glibc systems.
            *-gnu*)               gl_cv_func_printf_sizes_c99="guessing yes";;
                                  # Guess yes on FreeBSD >= 5.
@@ -79,10 +79,19 @@ changequote(,)dnl
            netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*)
                                  gl_cv_func_printf_sizes_c99="guessing no";;
            netbsd*)              gl_cv_func_printf_sizes_c99="guessing yes";;
+changequote([,])dnl
+                                 # Guess yes on MSVC, no on mingw.
+           mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                   ],
+                                   [gl_cv_func_printf_sizes_c99="guessing yes"],
+                                   [gl_cv_func_printf_sizes_c99="guessing no"])
+                                 ;;
                                  # If we don't know, assume the worst.
            *)                    gl_cv_func_printf_sizes_c99="guessing no";;
          esac
-changequote([,])dnl
         ])
     ])
 ])
@@ -122,14 +131,19 @@ int main ()
 }]])],
         [gl_cv_func_printf_long_double=yes],
         [gl_cv_func_printf_long_double=no],
-        [
+        [case "$host_os" in
-changequote(,)dnl
+           beos*)  gl_cv_func_printf_long_double="guessing no";;
-         case "$host_os" in
+                   # Guess yes on MSVC, no on mingw.
-           beos*)        gl_cv_func_printf_long_double="guessing no";;
+           mingw*) AC_EGREP_CPP([Known], [
-           mingw* | pw*) gl_cv_func_printf_long_double="guessing no";;
+#ifdef _MSC_VER
-           *)            gl_cv_func_printf_long_double="guessing yes";;
+ Known
+#endif
+                     ],
+                     [gl_cv_func_printf_long_double="guessing yes"],
+                     [gl_cv_func_printf_long_double="guessing no"])
+                   ;;
+           *)      gl_cv_func_printf_long_double="guessing yes";;
          esac
-changequote([,])dnl
         ])
     ])
 ])
@@ -217,8 +231,8 @@ int main ()
         [gl_cv_func_printf_infinite=yes],
         [gl_cv_func_printf_infinite=no],
         [
-changequote(,)dnl
          case "$host_os" in
+changequote(,)dnl
                                  # Guess yes on glibc systems.
            *-gnu*)               gl_cv_func_printf_infinite="guessing yes";;
                                  # Guess yes on FreeBSD >= 6.
@@ -236,10 +250,19 @@ changequote(,)dnl
            netbsd*)              gl_cv_func_printf_infinite="guessing yes";;
                                  # Guess yes on BeOS.
            beos*)                gl_cv_func_printf_infinite="guessing yes";;
+changequote([,])dnl
+                                 # Guess yes on MSVC, no on mingw.
+           mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                   ],
+                                   [gl_cv_func_printf_infinite="guessing yes"],
+                                   [gl_cv_func_printf_infinite="guessing no"])
+                                 ;;
                                  # If we don't know, assume the worst.
            *)                    gl_cv_func_printf_infinite="guessing no";;
          esac
-changequote([,])dnl
         ])
     ])
 ])
@@ -419,13 +442,12 @@ int main ()
 }]])],
             [gl_cv_func_printf_infinite_long_double=yes],
             [gl_cv_func_printf_infinite_long_double=no],
-            [
+            [case "$host_cpu" in
-changequote(,)dnl
-             case "$host_cpu" in
                                      # Guess no on ia64, x86_64, i386.
                ia64 | x86_64 | i*86) gl_cv_func_printf_infinite_long_double="guessing no";;
                *)
                  case "$host_os" in
+changequote(,)dnl
                                          # Guess yes on glibc systems.
                    *-gnu*)               gl_cv_func_printf_infinite_long_double="guessing yes";;
                                          # Guess yes on FreeBSD >= 6.
@@ -434,12 +456,21 @@ changequote(,)dnl
                                          # Guess yes on HP-UX >= 11.
                    hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite_long_double="guessing no";;
                    hpux*)                gl_cv_func_printf_infinite_long_double="guessing yes";;
+changequote([,])dnl
+                                         # Guess yes on MSVC, no on mingw.
+                   mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                           ],
+                                           [gl_cv_func_printf_infinite_long_double="guessing yes"],
+                                           [gl_cv_func_printf_infinite_long_double="guessing no"])
+                                         ;;
                                          # If we don't know, assume the worst.
                    *)                    gl_cv_func_printf_infinite_long_double="guessing no";;
                  esac
                  ;;
              esac
-changequote([,])dnl
             ])
         ])
       ;;
@@ -489,6 +520,13 @@ int main ()
           && strcmp (buf, "0x6.0ap-2 33") != 0
           && strcmp (buf, "0xc.14p-3 33") != 0))
     result |= 4;
+  /* This catches a Mac OS X 10.12.4 (Darwin 16.5) bug: it doesn't round.  */
+  if (sprintf (buf, "%.0a %d", 1.51, 33, 44, 55) < 0
+      || (strcmp (buf, "0x2p+0 33") != 0
+          && strcmp (buf, "0x3p-1 33") != 0
+          && strcmp (buf, "0x6p-2 33") != 0
+          && strcmp (buf, "0xcp-3 33") != 0))
+    result |= 4;
   /* This catches a FreeBSD 6.1 bug.  See
      <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */
   if (sprintf (buf, "%010a %d", 1.0 / zero, 33, 44, 55) < 0
@@ -528,6 +566,8 @@ int main ()
                [gl_cv_func_printf_directive_a="guessing yes"],
                [gl_cv_func_printf_directive_a="guessing no"])
              ;;
+                                 # Guess no on native Windows.
+           mingw*)               gl_cv_func_printf_directive_a="guessing no";;
                                  # If we don't know, assume the worst.
            *)                    gl_cv_func_printf_directive_a="guessing no";;
          esac
@@ -570,8 +610,8 @@ int main ()
         [gl_cv_func_printf_directive_f=yes],
         [gl_cv_func_printf_directive_f=no],
         [
-changequote(,)dnl
          case "$host_os" in
+changequote(,)dnl
                                  # Guess yes on glibc systems.
            *-gnu*)               gl_cv_func_printf_directive_f="guessing yes";;
                                  # Guess yes on FreeBSD >= 6.
@@ -581,12 +621,21 @@ changequote(,)dnl
            darwin[1-6].*)        gl_cv_func_printf_directive_f="guessing no";;
            darwin*)              gl_cv_func_printf_directive_f="guessing yes";;
                                  # Guess yes on Solaris >= 2.10.
-           solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";;
+           solaris2.[1-9][0-9]*) gl_cv_func_printf_directive_f="guessing yes";;
-           solaris*)             gl_cv_func_printf_sizes_c99="guessing no";;
+           solaris*)             gl_cv_func_printf_directive_f="guessing no";;
+changequote([,])dnl
+                                 # Guess yes on MSVC, no on mingw.
+           mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                   ],
+                                   [gl_cv_func_printf_directive_f="guessing yes"],
+                                   [gl_cv_func_printf_directive_f="guessing no"])
+                                 ;;
                                  # If we don't know, assume the worst.
            *)                    gl_cv_func_printf_directive_f="guessing no";;
          esac
-changequote([,])dnl
         ])
     ])
 ])
@@ -638,13 +687,11 @@ int main ()
 }]])],
         [gl_cv_func_printf_directive_n=yes],
         [gl_cv_func_printf_directive_n=no],
-        [
+        [case "$host_os" in
-changequote(,)dnl
+                   # Guess no on native Windows.
-         case "$host_os" in
            mingw*) gl_cv_func_printf_directive_n="guessing no";;
            *)      gl_cv_func_printf_directive_n="guessing yes";;
          esac
-changequote([,])dnl
         ])
     ])
 ])
@@ -719,12 +766,14 @@ int main ()
         [
 changequote(,)dnl
          case "$host_os" in
-           openbsd*)        gl_cv_func_printf_directive_ls="guessing no";;
+           openbsd*)       gl_cv_func_printf_directive_ls="guessing no";;
-           irix*)           gl_cv_func_printf_directive_ls="guessing no";;
+           irix*)          gl_cv_func_printf_directive_ls="guessing no";;
-           solaris*)        gl_cv_func_printf_directive_ls="guessing no";;
+           solaris*)       gl_cv_func_printf_directive_ls="guessing no";;
-           cygwin*)         gl_cv_func_printf_directive_ls="guessing no";;
+           cygwin*)        gl_cv_func_printf_directive_ls="guessing no";;
-           beos* | haiku*)  gl_cv_func_printf_directive_ls="guessing no";;
+           beos* | haiku*) gl_cv_func_printf_directive_ls="guessing no";;
-           *)               gl_cv_func_printf_directive_ls="guessing yes";;
+                           # Guess yes on native Windows.
+           mingw*)         gl_cv_func_printf_directive_ls="guessing yes";;
+           *)              gl_cv_func_printf_directive_ls="guessing yes";;
          esac
 changequote([,])dnl
         ])
@@ -763,6 +812,7 @@ changequote(,)dnl
            netbsd[1-3]* | netbsdelf[1-3]* | netbsdaout[1-3]* | netbsdcoff[1-3]*)
                          gl_cv_func_printf_positions="guessing no";;
            beos*)        gl_cv_func_printf_positions="guessing no";;
+                         # Guess no on native Windows.
            mingw* | pw*) gl_cv_func_printf_positions="guessing no";;
            *)            gl_cv_func_printf_positions="guessing yes";;
          esac
@@ -801,6 +851,7 @@ changequote(,)dnl
          case "$host_os" in
            cygwin*)      gl_cv_func_printf_flag_grouping="guessing no";;
            netbsd*)      gl_cv_func_printf_flag_grouping="guessing no";;
+                         # Guess no on native Windows.
            mingw* | pw*) gl_cv_func_printf_flag_grouping="guessing no";;
            *)            gl_cv_func_printf_flag_grouping="guessing yes";;
          esac
@@ -843,6 +894,8 @@ changequote(,)dnl
            hpux11*) gl_cv_func_printf_flag_leftadjust="guessing yes";;
                     # Guess no on HP-UX 10 and older.
            hpux*)   gl_cv_func_printf_flag_leftadjust="guessing no";;
+                    # Guess yes on native Windows.
+           mingw*)  gl_cv_func_printf_flag_leftadjust="guessing yes";;
                     # Guess yes otherwise.
            *)       gl_cv_func_printf_flag_leftadjust="guessing yes";;
          esac
@@ -886,6 +939,8 @@ changequote(,)dnl
            *-gnu*) gl_cv_func_printf_flag_zero="guessing yes";;
                    # Guess yes on BeOS.
            beos*)  gl_cv_func_printf_flag_zero="guessing yes";;
+                   # Guess no on native Windows.
+           mingw*) gl_cv_func_printf_flag_zero="guessing no";;
                    # If we don't know, assume the worst.
            *)      gl_cv_func_printf_flag_zero="guessing no";;
          esac
@@ -1153,6 +1208,8 @@ changequote(,)dnl
            netbsd*)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
                                  # Guess yes on BeOS.
            beos*)                gl_cv_func_snprintf_truncation_c99="guessing yes";;
+                                 # Guess no on native Windows.
+           mingw*)               gl_cv_func_snprintf_truncation_c99="guessing no";;
                                  # If we don't know, assume the worst.
            *)                    gl_cv_func_snprintf_truncation_c99="guessing no";;
          esac
@@ -1216,9 +1273,8 @@ int main ()
 }]])],
         [gl_cv_func_snprintf_retval_c99=yes],
         [gl_cv_func_snprintf_retval_c99=no],
-        [
+        [case "$host_os" in
 changequote(,)dnl
-         case "$host_os" in
                                  # Guess yes on glibc systems.
            *-gnu*)               gl_cv_func_snprintf_retval_c99="guessing yes";;
                                  # Guess yes on FreeBSD >= 5.
@@ -1243,10 +1299,19 @@ changequote(,)dnl
            netbsd*)              gl_cv_func_snprintf_retval_c99="guessing yes";;
                                  # Guess yes on BeOS.
            beos*)                gl_cv_func_snprintf_retval_c99="guessing yes";;
+changequote([,])dnl
+                                 # Guess yes on MSVC, no on mingw.
+           mingw*)               AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+                                   ],
+                                   [gl_cv_func_snprintf_retval_c99="guessing yes"],
+                                   [gl_cv_func_snprintf_retval_c99="guessing no"])
+                                 ;;
                                  # If we don't know, assume the worst.
            *)                    gl_cv_func_snprintf_retval_c99="guessing no";;
          esac
-changequote([,])dnl
         ])
     ])
 ])
@@ -1326,6 +1391,8 @@ changequote(,)dnl
            netbsd*)              gl_cv_func_snprintf_directive_n="guessing yes";;
                                  # Guess yes on BeOS.
            beos*)                gl_cv_func_snprintf_directive_n="guessing yes";;
+                                 # Guess no on native Windows.
+           mingw*)               gl_cv_func_snprintf_directive_n="guessing no";;
                                  # If we don't know, assume the worst.
            *)                    gl_cv_func_snprintf_directive_n="guessing no";;
          esac
@@ -1342,6 +1409,7 @@ dnl Result is gl_cv_func_snprintf_size1.
 AC_DEFUN([gl_SNPRINTF_SIZE1],
 [
   AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
   AC_REQUIRE([gl_SNPRINTF_PRESENCE])
   AC_CACHE_CHECK([whether snprintf respects a size of 1],
     [gl_cv_func_snprintf_size1],
@@ -1371,7 +1439,12 @@ int main()
 }]])],
         [gl_cv_func_snprintf_size1=yes],
         [gl_cv_func_snprintf_size1=no],
-        [gl_cv_func_snprintf_size1="guessing yes"])
+        [case "$host_os" in
+                   # Guess yes on native Windows.
+           mingw*) gl_cv_func_snprintf_size1="guessing yes" ;;
+           *)      gl_cv_func_snprintf_size1="guessing yes" ;;
+         esac
+        ])
     ])
 ])
 
@@ -1467,7 +1540,7 @@ changequote(,)dnl
            netbsd*)              gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
                                  # Guess yes on BeOS.
            beos*)                gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
-                                 # Guess yes on mingw.
+                                 # Guess yes on native Windows.
            mingw* | pw*)         gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
                                  # If we don't know, assume the worst.
            *)                    gl_cv_func_vsnprintf_zerosize_c99="guessing no";;

m4/sleep.m4

@@ -1,4 +1,4 @@
-# sleep.m4 serial 7
+# sleep.m4 serial 8
 dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -48,6 +48,8 @@ handle_alarm (int sig)
       [case "$host_os" in
                  # Guess yes on glibc systems.
          *-gnu*) gl_cv_func_sleep_works="guessing yes" ;;
+                 # Guess no on native Windows.
+         mingw*) gl_cv_func_sleep_works="guessing no" ;;
                  # If we don't know, assume the worst.
          *)      gl_cv_func_sleep_works="guessing no" ;;
        esac

m4/stat.m4

@@ -1,4 +1,4 @@
-# serial 11
+# serial 12
 
 # Copyright (C) 2009-2017 Free Software Foundation, Inc.
 #
@@ -8,64 +8,60 @@
 
 AC_DEFUN([gl_FUNC_STAT],
 [
-  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_REQUIRE([AC_CANONICAL_HOST])
   AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
   AC_CHECK_FUNCS_ONCE([lstat])
-  dnl mingw is the only known platform where stat(".") and stat("./") differ
+  case "$host_os" in
-  AC_CACHE_CHECK([whether stat handles trailing slashes on directories],
+    mingw*)
-      [gl_cv_func_stat_dir_slash],
+      dnl On this platform, the original stat() returns st_atime, st_mtime,
-      [AC_RUN_IFELSE(
+      dnl st_ctime values that are affected by the time zone.
-         [AC_LANG_PROGRAM(
+      REPLACE_STAT=1
-           [[#include <sys/stat.h>
+      ;;
-]], [[struct stat st; return stat (".", &st) != stat ("./", &st);]])],
+    *)
-         [gl_cv_func_stat_dir_slash=yes], [gl_cv_func_stat_dir_slash=no],
+      dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/").
-         [case $host_os in
+      dnl (For mingw, this is due to a broken stat() override in libmingwex.a.)
-            mingw*) gl_cv_func_stat_dir_slash="guessing no";;
+      dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/").
-            *) gl_cv_func_stat_dir_slash="guessing yes";;
+      AC_CACHE_CHECK([whether stat handles trailing slashes on files],
-          esac])])
+        [gl_cv_func_stat_file_slash],
-  dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/").
+        [touch conftest.tmp
-  dnl (For mingw, this is due to a broken stat() override in libmingwex.a.)
+         # Assume that if we have lstat, we can also check symlinks.
-  dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/").
+         if test $ac_cv_func_lstat = yes; then
-  AC_CACHE_CHECK([whether stat handles trailing slashes on files],
+           ln -s conftest.tmp conftest.lnk
-      [gl_cv_func_stat_file_slash],
+         fi
-      [touch conftest.tmp
+         AC_RUN_IFELSE(
-       # Assume that if we have lstat, we can also check symlinks.
+           [AC_LANG_PROGRAM(
-       if test $ac_cv_func_lstat = yes; then
+             [[#include <sys/stat.h>
-         ln -s conftest.tmp conftest.lnk
-       fi
-       AC_RUN_IFELSE(
-         [AC_LANG_PROGRAM(
-           [[#include <sys/stat.h>
 ]], [[int result = 0;
-      struct stat st;
+               struct stat st;
-      if (!stat ("conftest.tmp/", &st))
+               if (!stat ("conftest.tmp/", &st))
-        result |= 1;
+                 result |= 1;
 #if HAVE_LSTAT
-      if (!stat ("conftest.lnk/", &st))
+               if (!stat ("conftest.lnk/", &st))
-        result |= 2;
+                 result |= 2;
 #endif
-      return result;
+               return result;
-           ]])],
+             ]])],
-         [gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no],
+           [gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no],
-         [case "$host_os" in
+           [case "$host_os" in
-                    # Guess yes on glibc systems.
+                      # Guess yes on glibc systems.
-            *-gnu*) gl_cv_func_stat_file_slash="guessing yes" ;;
+              *-gnu*) gl_cv_func_stat_file_slash="guessing yes" ;;
-                    # If we don't know, assume the worst.
+                      # If we don't know, assume the worst.
-            *)      gl_cv_func_stat_file_slash="guessing no" ;;
+              *)      gl_cv_func_stat_file_slash="guessing no" ;;
-          esac
+            esac
-         ])
+           ])
-       rm -f conftest.tmp conftest.lnk])
+         rm -f conftest.tmp conftest.lnk])
-  case $gl_cv_func_stat_dir_slash in
+      case $gl_cv_func_stat_file_slash in
-    *no) REPLACE_STAT=1
+        *no)
-      AC_DEFINE([REPLACE_FUNC_STAT_DIR], [1], [Define to 1 if stat needs
+          REPLACE_STAT=1
-        help when passed a directory name with a trailing slash]);;
+          AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs
-  esac
+            help when passed a file name with a trailing slash]);;
-  case $gl_cv_func_stat_file_slash in
+      esac
-    *no) REPLACE_STAT=1
+      ;;
-      AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs
-        help when passed a file name with a trailing slash]);;
   esac
 ])
 
-# Prerequisites of lib/stat.c.
+# Prerequisites of lib/stat.c and lib/stat-w32.c.
-AC_DEFUN([gl_PREREQ_STAT], [:])
+AC_DEFUN([gl_PREREQ_STAT], [
+  AC_REQUIRE([gl_HEADER_SYS_STAT_H])
+  :
+])

m4/stdalign.m4

@@ -35,8 +35,8 @@ AC_DEFUN([gl_STDALIGN_H],
                  || (defined __APPLE__ && defined __MACH__ \
                      ? 4 < __GNUC__ + (1 <= __GNUC_MINOR__) \
                      : __GNUC__) \
-                 || __HP_cc || __HP_aCC || __IBMC__ || __IBMCPP__ \
+                 || (__ia64 && (61200 <= __HP_cc || 61200 <= __HP_aCC)) \
-                 || __ICC || 0x5110 <= __SUNPRO_C \
+                 || __ICC || 0x590 <= __SUNPRO_C || 0x0600 <= __xlC__ \
                  || 1300 <= _MSC_VER)
               struct alignas_test { char c; char alignas (8) alignas_8; };
               char test_alignas[offsetof (struct alignas_test, alignas_8) == 8

m4/stdint.m4

@@ -1,4 +1,4 @@
-# stdint.m4 serial 50
+# stdint.m4 serial 51
 dnl Copyright (C) 2001-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -10,6 +10,7 @@ dnl Test whether <stdint.h> is supported or must be substituted.
 AC_DEFUN_ONCE([gl_STDINT_H],
 [
   AC_PREREQ([2.59])dnl
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
 
   AC_REQUIRE([gl_LIMITS_H])
   AC_REQUIRE([gt_TYPE_WINT_T])
@@ -288,8 +289,12 @@ static const char *macro_values[] =
 ]])],
               [gl_cv_header_working_stdint_h=yes],
               [],
-              [dnl When cross-compiling, assume it works.
+              [case "$host_os" in
-               gl_cv_header_working_stdint_h=yes
+                         # Guess yes on native Windows.
+                 mingw*) gl_cv_header_working_stdint_h="guessing yes" ;;
+                         # In general, assume it works.
+                 *)      gl_cv_header_working_stdint_h="guessing yes" ;;
+               esac
               ])
          ])
       ])
@@ -299,15 +304,16 @@ static const char *macro_values[] =
   HAVE_SYS_BITYPES_H=0
   HAVE_SYS_INTTYPES_H=0
   STDINT_H=stdint.h
-  if test "$gl_cv_header_working_stdint_h" = yes; then
+  case "$gl_cv_header_working_stdint_h" in
-    HAVE_C99_STDINT_H=1
+    *yes)
-    dnl Now see whether the system <stdint.h> works without
+      HAVE_C99_STDINT_H=1
-    dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined.
+      dnl Now see whether the system <stdint.h> works without
-    AC_CACHE_CHECK([whether stdint.h predates C++11],
+      dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined.
-      [gl_cv_header_stdint_predates_cxx11_h],
+      AC_CACHE_CHECK([whether stdint.h predates C++11],
-      [gl_cv_header_stdint_predates_cxx11_h=yes
+        [gl_cv_header_stdint_predates_cxx11_h],
-       AC_COMPILE_IFELSE([
+        [gl_cv_header_stdint_predates_cxx11_h=yes
-         AC_LANG_PROGRAM([[
+         AC_COMPILE_IFELSE([
+           AC_LANG_PROGRAM([[
 #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
 #include <stdint.h>
 ]
@@ -315,45 +321,47 @@ gl_STDINT_INCLUDES
 [
 intmax_t im = INTMAX_MAX;
 int32_t i32 = INT32_C (0x7fffffff);
-         ]])],
+           ]])],
-         [gl_cv_header_stdint_predates_cxx11_h=no])])
+           [gl_cv_header_stdint_predates_cxx11_h=no])])
 
-    if test "$gl_cv_header_stdint_predates_cxx11_h" = yes; then
+      if test "$gl_cv_header_stdint_predates_cxx11_h" = yes; then
-      AC_DEFINE([__STDC_CONSTANT_MACROS], [1],
+        AC_DEFINE([__STDC_CONSTANT_MACROS], [1],
-                [Define to 1 if the system <stdint.h> predates C++11.])
+                  [Define to 1 if the system <stdint.h> predates C++11.])
-      AC_DEFINE([__STDC_LIMIT_MACROS], [1],
+        AC_DEFINE([__STDC_LIMIT_MACROS], [1],
-                [Define to 1 if the system <stdint.h> predates C++11.])
+                  [Define to 1 if the system <stdint.h> predates C++11.])
-    fi
+      fi
-    AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.],
+      AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.],
-      [gl_cv_header_stdint_width],
+        [gl_cv_header_stdint_width],
-      [gl_cv_header_stdint_width=no
+        [gl_cv_header_stdint_width=no
-       AC_COMPILE_IFELSE(
+         AC_COMPILE_IFELSE(
-         [AC_LANG_PROGRAM([[
+           [AC_LANG_PROGRAM([[
-            /* Work if build is not clean.  */
+              /* Work if build is not clean.  */
-            #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1
+              #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1
-            #ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+              #ifndef __STDC_WANT_IEC_60559_BFP_EXT__
-             #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+               #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
-            #endif
+              #endif
-            #include <stdint.h>
+              #include <stdint.h>
-            ]gl_STDINT_INCLUDES[
+              ]gl_STDINT_INCLUDES[
-            int iw = UINTMAX_WIDTH;
+              int iw = UINTMAX_WIDTH;
-            ]])],
+              ]])],
-         [gl_cv_header_stdint_width=yes])])
+           [gl_cv_header_stdint_width=yes])])
-    if test "$gl_cv_header_stdint_width" = yes; then
+      if test "$gl_cv_header_stdint_width" = yes; then
-      STDINT_H=
+        STDINT_H=
-    fi
+      fi
-  else
+      ;;
-    dnl Check for <sys/inttypes.h>, and for
+    *)
-    dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5).
+      dnl Check for <sys/inttypes.h>, and for
-    AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h])
+      dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5).
-    if test $ac_cv_header_sys_inttypes_h = yes; then
+      AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h])
-      HAVE_SYS_INTTYPES_H=1
+      if test $ac_cv_header_sys_inttypes_h = yes; then
-    fi
+        HAVE_SYS_INTTYPES_H=1
-    if test $ac_cv_header_sys_bitypes_h = yes; then
+      fi
-      HAVE_SYS_BITYPES_H=1
+      if test $ac_cv_header_sys_bitypes_h = yes; then
-    fi
+        HAVE_SYS_BITYPES_H=1
-    gl_STDINT_TYPE_PROPERTIES
+      fi
-  fi
+      gl_STDINT_TYPE_PROPERTIES
+      ;;
+  esac
 
   dnl The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH.
   LIMITS_H=limits.h

m4/strerror.m4

@@ -1,4 +1,4 @@
-# strerror.m4 serial 17
+# strerror.m4 serial 18
 dnl Copyright (C) 2002, 2007-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -80,6 +80,8 @@ AC_DEFUN([gl_FUNC_STRERROR_0],
       [case "$host_os" in
                  # Guess yes on glibc systems.
          *-gnu*) gl_cv_func_strerror_0_works="guessing yes" ;;
+                 # Guess yes on native Windows.
+         mingw*) gl_cv_func_strerror_0_works="guessing yes" ;;
                  # If we don't know, assume the worst.
          *)      gl_cv_func_strerror_0_works="guessing no" ;;
        esac

m4/string_h.m4

@@ -43,6 +43,7 @@ AC_DEFUN([gl_STRING_MODULE_INDICATOR],
 
 AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
 [
+  GNULIB_EXPLICIT_BZERO=0; AC_SUBST([GNULIB_EXPLICIT_BZERO])
   GNULIB_FFSL=0;        AC_SUBST([GNULIB_FFSL])
   GNULIB_FFSLL=0;       AC_SUBST([GNULIB_FFSLL])
   GNULIB_MEMCHR=0;      AC_SUBST([GNULIB_MEMCHR])
@@ -82,6 +83,7 @@ AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
   GNULIB_STRVERSCMP=0;  AC_SUBST([GNULIB_STRVERSCMP])
   HAVE_MBSLEN=0;        AC_SUBST([HAVE_MBSLEN])
   dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_EXPLICIT_BZERO=1;        AC_SUBST([HAVE_EXPLICIT_BZERO])
   HAVE_FFSL=1;                  AC_SUBST([HAVE_FFSL])
   HAVE_FFSLL=1;                 AC_SUBST([HAVE_FFSLL])
   HAVE_MEMCHR=1;                AC_SUBST([HAVE_MEMCHR])

m4/sys_stat_h.m4

@@ -1,4 +1,4 @@
-# sys_stat_h.m4 serial 28   -*- Autoconf -*-
+# sys_stat_h.m4 serial 31   -*- Autoconf -*-
 dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -19,18 +19,21 @@ AC_DEFUN([gl_HEADER_SYS_STAT_H],
   dnl Ensure the type mode_t gets defined.
   AC_REQUIRE([AC_TYPE_MODE_T])
 
-  dnl Whether to override 'struct stat'.
+  dnl Whether to enable precise timestamps in 'struct stat'.
+  m4_ifdef([gl_WINDOWS_STAT_TIMESPEC], [
+    AC_REQUIRE([gl_WINDOWS_STAT_TIMESPEC])
+  ], [
+    WINDOWS_STAT_TIMESPEC=0
+  ])
+  AC_SUBST([WINDOWS_STAT_TIMESPEC])
+
+  dnl Whether to ensure that struct stat.st_size is 64-bit wide.
   m4_ifdef([gl_LARGEFILE], [
     AC_REQUIRE([gl_LARGEFILE])
   ], [
     WINDOWS_64_BIT_ST_SIZE=0
   ])
   AC_SUBST([WINDOWS_64_BIT_ST_SIZE])
-  if test $WINDOWS_64_BIT_ST_SIZE = 1; then
-    AC_DEFINE([_GL_WINDOWS_64_BIT_ST_SIZE], [1],
-      [Define to 1 if Gnulib overrides 'struct stat' on Windows so that
-       struct stat.st_size becomes 64-bit.])
-  fi
 
   dnl Define types that are supposed to be defined in <sys/types.h> or
   dnl <sys/stat.h>.
@@ -72,6 +75,7 @@ AC_DEFUN([gl_SYS_STAT_H_DEFAULTS],
   GNULIB_MKNODAT=0;     AC_SUBST([GNULIB_MKNODAT])
   GNULIB_STAT=0;        AC_SUBST([GNULIB_STAT])
   GNULIB_UTIMENSAT=0;   AC_SUBST([GNULIB_UTIMENSAT])
+  GNULIB_OVERRIDES_STRUCT_STAT=0; AC_SUBST([GNULIB_OVERRIDES_STRUCT_STAT])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_FCHMODAT=1;      AC_SUBST([HAVE_FCHMODAT])
   HAVE_FSTATAT=1;       AC_SUBST([HAVE_FSTATAT])

m4/sys_time_h.m4

@@ -1,5 +1,5 @@
 # Configure a replacement for <sys/time.h>.
-# serial 8
+# serial 9
 
 # Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -105,7 +105,6 @@ AC_DEFUN([gl_HEADER_SYS_TIME_H_DEFAULTS],
   HAVE_GETTIMEOFDAY=1;       AC_SUBST([HAVE_GETTIMEOFDAY])
   HAVE_STRUCT_TIMEVAL=1;     AC_SUBST([HAVE_STRUCT_TIMEVAL])
   HAVE_SYS_TIME_H=1;         AC_SUBST([HAVE_SYS_TIME_H])
-  HAVE_TIMEZONE_T=0;         AC_SUBST([HAVE_TIMEZONE_T])
   REPLACE_GETTIMEOFDAY=0;    AC_SUBST([REPLACE_GETTIMEOFDAY])
   REPLACE_STRUCT_TIMEVAL=0;  AC_SUBST([REPLACE_STRUCT_TIMEVAL])
 ])

m4/sys_types_h.m4

@@ -1,4 +1,4 @@
-# sys_types_h.m4 serial 6
+# sys_types_h.m4 serial 8
 dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -6,6 +6,9 @@ dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN_ONCE([gl_SYS_TYPES_H],
 [
+  dnl Use sane struct stat types in OpenVMS 8.2 and later.
+  AC_DEFINE([_USE_STD_STAT], 1, [For standard stat data types on VMS.])
+
   AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
   gl_NEXT_HEADERS([sys/types.h])
 
@@ -17,6 +20,14 @@ AC_DEFUN_ONCE([gl_SYS_TYPES_H],
 
   dnl Whether to override the 'off_t' type.
   AC_REQUIRE([gl_TYPE_OFF_T])
+
+  dnl Whether to override the 'dev_t' and 'ino_t' types.
+  m4_ifdef([gl_WINDOWS_STAT_INODES], [
+    AC_REQUIRE([gl_WINDOWS_STAT_INODES])
+  ], [
+    WINDOWS_STAT_INODES=0
+  ])
+  AC_SUBST([WINDOWS_STAT_INODES])
 ])
 
 AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS],

m4/time_h.m4

@@ -2,7 +2,7 @@
 
 # Copyright (C) 2000-2001, 2003-2007, 2009-2017 Free Software Foundation, Inc.
 
-# serial 9
+# serial 11
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -104,24 +104,34 @@ AC_DEFUN([gl_TIME_MODULE_INDICATOR],
 
 AC_DEFUN([gl_HEADER_TIME_H_DEFAULTS],
 [
+  GNULIB_CTIME=0;                        AC_SUBST([GNULIB_CTIME])
   GNULIB_MKTIME=0;                       AC_SUBST([GNULIB_MKTIME])
+  GNULIB_LOCALTIME=0;                    AC_SUBST([GNULIB_LOCALTIME])
   GNULIB_NANOSLEEP=0;                    AC_SUBST([GNULIB_NANOSLEEP])
+  GNULIB_STRFTIME=0;                     AC_SUBST([GNULIB_STRFTIME])
   GNULIB_STRPTIME=0;                     AC_SUBST([GNULIB_STRPTIME])
   GNULIB_TIMEGM=0;                       AC_SUBST([GNULIB_TIMEGM])
   GNULIB_TIME_R=0;                       AC_SUBST([GNULIB_TIME_R])
   GNULIB_TIME_RZ=0;                      AC_SUBST([GNULIB_TIME_RZ])
+  GNULIB_TZSET=0;                        AC_SUBST([GNULIB_TZSET])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_DECL_LOCALTIME_R=1;               AC_SUBST([HAVE_DECL_LOCALTIME_R])
   HAVE_NANOSLEEP=1;                      AC_SUBST([HAVE_NANOSLEEP])
   HAVE_STRPTIME=1;                       AC_SUBST([HAVE_STRPTIME])
   HAVE_TIMEGM=1;                         AC_SUBST([HAVE_TIMEGM])
+  HAVE_TZSET=1;                          AC_SUBST([HAVE_TZSET])
+  dnl Even GNU libc does not have timezone_t yet.
+  HAVE_TIMEZONE_T=0;                     AC_SUBST([HAVE_TIMEZONE_T])
   dnl If another module says to replace or to not replace, do that.
   dnl Otherwise, replace only if someone compiles with -DGNULIB_PORTCHECK;
   dnl this lets maintainers check for portability.
+  REPLACE_CTIME=GNULIB_PORTCHECK;        AC_SUBST([REPLACE_CTIME])
   REPLACE_LOCALTIME_R=GNULIB_PORTCHECK;  AC_SUBST([REPLACE_LOCALTIME_R])
   REPLACE_MKTIME=GNULIB_PORTCHECK;       AC_SUBST([REPLACE_MKTIME])
   REPLACE_NANOSLEEP=GNULIB_PORTCHECK;    AC_SUBST([REPLACE_NANOSLEEP])
+  REPLACE_STRFTIME=GNULIB_PORTCHECK;     AC_SUBST([REPLACE_STRFTIME])
   REPLACE_TIMEGM=GNULIB_PORTCHECK;       AC_SUBST([REPLACE_TIMEGM])
+  REPLACE_TZSET=GNULIB_PORTCHECK;        AC_SUBST([REPLACE_TZSET])
 
   dnl Hack so that the time module doesn't depend on the sys_time module.
   dnl First, default GNULIB_GETTIMEOFDAY to 0 if sys_time is absent.

m4/unistd_h.m4

@@ -1,4 +1,4 @@
-# unistd_h.m4 serial 69
+# unistd_h.m4 serial 70
 dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -46,8 +46,8 @@ AC_DEFUN([gl_UNISTD_H],
     gethostname getlogin getlogin_r getpagesize
     getusershell setusershell endusershell
     group_member isatty lchown link linkat lseek pipe pipe2 pread pwrite
-    readlink readlinkat rmdir sethostname sleep symlink symlinkat ttyname_r
+    readlink readlinkat rmdir sethostname sleep symlink symlinkat
-    unlink unlinkat usleep])
+    truncate ttyname_r unlink unlinkat usleep])
 ])
 
 AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
@@ -102,6 +102,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_SLEEP=0;                AC_SUBST([GNULIB_SLEEP])
   GNULIB_SYMLINK=0;              AC_SUBST([GNULIB_SYMLINK])
   GNULIB_SYMLINKAT=0;            AC_SUBST([GNULIB_SYMLINKAT])
+  GNULIB_TRUNCATE=0;             AC_SUBST([GNULIB_TRUNCATE])
   GNULIB_TTYNAME_R=0;            AC_SUBST([GNULIB_TTYNAME_R])
   GNULIB_UNISTD_H_NONBLOCKING=0; AC_SUBST([GNULIB_UNISTD_H_NONBLOCKING])
   GNULIB_UNISTD_H_SIGPIPE=0;     AC_SUBST([GNULIB_UNISTD_H_SIGPIPE])
@@ -139,6 +140,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
   HAVE_SYMLINK=1;         AC_SUBST([HAVE_SYMLINK])
   HAVE_SYMLINKAT=1;       AC_SUBST([HAVE_SYMLINKAT])
+  HAVE_TRUNCATE=1;        AC_SUBST([HAVE_TRUNCATE])
   HAVE_UNLINKAT=1;        AC_SUBST([HAVE_UNLINKAT])
   HAVE_USLEEP=1;          AC_SUBST([HAVE_USLEEP])
   HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
@@ -179,6 +181,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   REPLACE_SLEEP=0;        AC_SUBST([REPLACE_SLEEP])
   REPLACE_SYMLINK=0;      AC_SUBST([REPLACE_SYMLINK])
   REPLACE_SYMLINKAT=0;    AC_SUBST([REPLACE_SYMLINKAT])
+  REPLACE_TRUNCATE=0;     AC_SUBST([REPLACE_TRUNCATE])
   REPLACE_TTYNAME_R=0;    AC_SUBST([REPLACE_TTYNAME_R])
   REPLACE_UNLINK=0;       AC_SUBST([REPLACE_UNLINK])
   REPLACE_UNLINKAT=0;     AC_SUBST([REPLACE_UNLINKAT])

m4/wchar_h.m4

@@ -7,7 +7,7 @@ dnl with or without modifications, as long as this notice is preserved.
 
 dnl Written by Eric Blake.
 
-# wchar_h.m4 serial 40
+# wchar_h.m4 serial 42
 
 AC_DEFUN([gl_WCHAR_H],
 [
@@ -35,6 +35,8 @@ AC_DEFUN([gl_WCHAR_H],
   fi
   AC_SUBST([HAVE_WINT_T])
 
+  AC_REQUIRE([gl_TYPE_WINT_T_PREREQ])
+
   dnl Check for declarations of anything we want to poison if the
   dnl corresponding gnulib module is not in use.
   gl_WARN_ON_USE_PREPARE([[
@@ -53,7 +55,7 @@ AC_DEFUN([gl_WCHAR_H],
      wcsrtombs wcsnrtombs wcwidth wmemchr wmemcmp wmemcpy wmemmove wmemset
      wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat wcscmp
      wcsncmp wcscasecmp wcsncasecmp wcscoll wcsxfrm wcsdup wcschr wcsrchr
-     wcscspn wcsspn wcspbrk wcsstr wcstok wcswidth
+     wcscspn wcsspn wcspbrk wcsstr wcstok wcswidth wcsftime
     ])
 ])
 
@@ -177,6 +179,7 @@ AC_DEFUN([gl_WCHAR_H_DEFAULTS],
   GNULIB_WCSSTR=0;      AC_SUBST([GNULIB_WCSSTR])
   GNULIB_WCSTOK=0;      AC_SUBST([GNULIB_WCSTOK])
   GNULIB_WCSWIDTH=0;    AC_SUBST([GNULIB_WCSWIDTH])
+  GNULIB_WCSFTIME=0;    AC_SUBST([GNULIB_WCSFTIME])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_BTOWC=1;         AC_SUBST([HAVE_BTOWC])
   HAVE_MBSINIT=1;       AC_SUBST([HAVE_MBSINIT])
@@ -215,6 +218,7 @@ AC_DEFUN([gl_WCHAR_H_DEFAULTS],
   HAVE_WCSSTR=1;        AC_SUBST([HAVE_WCSSTR])
   HAVE_WCSTOK=1;        AC_SUBST([HAVE_WCSTOK])
   HAVE_WCSWIDTH=1;      AC_SUBST([HAVE_WCSWIDTH])
+  HAVE_WCSFTIME=1;      AC_SUBST([HAVE_WCSFTIME])
   HAVE_DECL_WCTOB=1;    AC_SUBST([HAVE_DECL_WCTOB])
   HAVE_DECL_WCWIDTH=1;  AC_SUBST([HAVE_DECL_WCWIDTH])
   REPLACE_MBSTATE_T=0;  AC_SUBST([REPLACE_MBSTATE_T])
@@ -230,4 +234,5 @@ AC_DEFUN([gl_WCHAR_H_DEFAULTS],
   REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS])
   REPLACE_WCWIDTH=0;    AC_SUBST([REPLACE_WCWIDTH])
   REPLACE_WCSWIDTH=0;   AC_SUBST([REPLACE_WCSWIDTH])
+  REPLACE_WCSFTIME=0;   AC_SUBST([REPLACE_WCSFTIME])
 ])

m4/wctype_h.m4

@@ -1,4 +1,4 @@
-# wctype_h.m4 serial 18
+# wctype_h.m4 serial 21
 
 dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
 
@@ -30,6 +30,8 @@ AC_DEFUN([gl_WCTYPE_H],
   fi
   AC_SUBST([HAVE_WINT_T])
 
+  AC_REQUIRE([gl_TYPE_WINT_T_PREREQ])
+
   gl_CHECK_NEXT_HEADERS([wctype.h])
   if test $ac_cv_header_wctype_h = yes; then
     if test $ac_cv_func_iswcntrl = yes; then
@@ -51,7 +53,8 @@ AC_DEFUN([gl_WCTYPE_H],
                int main () { return iswprint ('x') == 0; }
             ]])],
             [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no],
-            [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
+            [dnl Guess no on Linux libc5, yes otherwise.
+             AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
                           #if __GNU_LIBRARY__ == 1
                           Linux libc5 i18n is broken.
                           #endif]], [])],

m4/wint_t.m4

@@ -1,4 +1,4 @@
-# wint_t.m4 serial 6
+# wint_t.m4 serial 7
 dnl Copyright (C) 2003, 2007-2017 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -60,3 +60,15 @@ AC_DEFUN([gt_TYPE_WINT_T],
   fi
   AC_SUBST([GNULIB_OVERRIDES_WINT_T])
 ])
+
+dnl Prerequisites of the 'wint_t' override.
+AC_DEFUN([gl_TYPE_WINT_T_PREREQ],
+[
+  AC_CHECK_HEADERS_ONCE([crtdefs.h])
+  if test $ac_cv_header_crtdefs_h = yes; then
+    HAVE_CRTDEFS_H=1
+  else
+    HAVE_CRTDEFS_H=0
+  fi
+  AC_SUBST([HAVE_CRTDEFS_H])
+])