1e86463205
* lib/dosname.h, lib/glthread/lock.c, lib/glthread/lock.h, lib/glthread/threadlib.c, lib/windows-mutex.c, lib/windows-mutex.h, lib/windows-once.c, lib/windows-once.h, lib/windows-recmutex.c, lib/windows-recmutex.h, lib/windows-rwlock.c, lib/windows-rwlock.h, m4/host-cpu-c-abi.m4, m4/lib-ld.m4, m4/lib-link.m4, m4/lib-prefix.m4, m4/lock.m4, m4/longlong.m4, m4/pthread_rwlock_rdlock.m4, tools/config.rpath: Delete. * lib/alloca.in.h, lib/argmatch.c, lib/argmatch.h, lib/arg-nonnull.h, lib/argp-ba.c, lib/argp-eexst.c, lib/argp-fmtstream.c, lib/argp-fmtstream.h, lib/argp-fs-xinl.c, lib/argp.h, lib/argp-help.c, lib/argp-namefrob.h, lib/argp-parse.c, lib/argp-pin.c, lib/argp-pv.c, lib/argp-pvh.c, lib/argp-xinl.c, lib/asnprintf.c, lib/basename-lgpl.c, lib/c-ctype.h, lib/c++defs.h, lib/cdefs.h, lib/closeout.c, lib/closeout.h, lib/close-stream.c, lib/c-strcasecmp.c, lib/c-strcaseeq.h, lib/c-strcase.h, lib/c-strncasecmp.c, lib/dirname.h, lib/dirname-lgpl.c, lib/errno.in.h, lib/error.c, lib/error.h, lib/exitfail.c, lib/exitfail.h, lib/fcntl.in.h, lib/filename.h, lib/float.c, lib/float+.h, lib/float.in.h, lib/fpending.c, lib/fpending.h, lib/getopt1.c, lib/getopt.c, lib/getopt-cdefs.in.h, lib/getopt-core.h, lib/getopt-ext.h, lib/getopt.in.h, lib/getopt_int.h, lib/getopt-pfx-core.h, lib/getopt-pfx-ext.h, lib/getprogname.c, lib/getprogname.h, lib/gettext.h, lib/gettimeofday.c, lib/hard-locale.c, lib/hard-locale.h, lib/intprops.h, lib/isatty.c, lib/itold.c, lib/libc-config.h, lib/limits.in.h, lib/localcharset.c, lib/localcharset.h, lib/localtime-buffer.c, lib/localtime-buffer.h, lib/lstat.c, lib/Makefile.am, lib/malloca.c, lib/malloca.h, lib/malloc.c, lib/mbrtowc.c, lib/mbsinit.c, lib/memchr.c, lib/memchr.valgrind, lib/mempcpy.c, lib/minmax.h, lib/mkdir.c, lib/mkstemp.c, lib/mkstemps.c, lib/msvc-inval.c, lib/msvc-inval.h, lib/msvc-nothrow.c, lib/msvc-nothrow.h, lib/_Noreturn.h, lib/pathmax.h, lib/printf-args.c, lib/printf-args.h, lib/printf-parse.c, lib/printf-parse.h, lib/progname.c, lib/progname.h, lib/quotearg.c, lib/quotearg.h, lib/quote.h, lib/rawmemchr.c, lib/rawmemchr.valgrind, lib/secure_getenv.c, lib/size_max.h, lib/sleep.c, lib/stat.c, lib/stat-time.h, lib/stat-w32.c, lib/stat-w32.h, lib/stdalign.in.h, lib/stdbool.in.h, lib/stddef.in.h, lib/stdint.in.h, lib/stdio-impl.h, lib/stdio.in.h, lib/stdlib.in.h, lib/stpcpy.c, lib/strcasecmp.c, lib/strchrnul.c, lib/strchrnul.valgrind, lib/streq.h, lib/strerror.c, lib/strerror-override.c, lib/strerror-override.h, lib/string.in.h, lib/strings.in.h, lib/stripslash.c, lib/strncasecmp.c, lib/strndup.c, lib/strnlen.c, lib/strverscmp.c, lib/sysexits.in.h, lib/sys_stat.in.h, lib/sys_time.in.h, lib/sys_types.in.h, lib/sys_wait.in.h, lib/tempname.c, lib/tempname.h, lib/time.in.h, lib/unistd.in.h, lib/vasnprintf.c, lib/vasnprintf.h, lib/verify.h, lib/vsnprintf.c, lib/warn-on-use.h, lib/wchar.in.h, lib/wctype.in.h, lib/windows-initguard.h, lib/xalloc-die.c, lib/xalloc.h, lib/xalloc-oversized.h, lib/xmalloc.c, lib/xsize.h, m4/00gnulib.m4, m4/absolute-header.m4, m4/alloca.m4, m4/argp.m4, m4/codeset.m4, m4/dirname.m4, m4/double-slash-root.m4, m4/eealloc.m4, m4/errno_h.m4, m4/error.m4, m4/exponentd.m4, m4/extensions.m4, m4/extern-inline.m4, m4/fcntl_h.m4, m4/fcntl-o.m4, m4/float_h.m4, m4/fpending.m4, m4/getopt.m4, m4/getprogname.m4, m4/gettimeofday.m4, m4/gnulib-cache.m4, m4/gnulib-common.m4, m4/gnulib-comp.m4, m4/gnulib-tool.m4, m4/include_next.m4, m4/__inline.m4, m4/intmax_t.m4, m4/inttypes_h.m4, m4/isatty.m4, m4/largefile.m4, m4/limits-h.m4, m4/localcharset.m4, m4/locale-fr.m4, m4/locale-ja.m4, m4/locale-zh.m4, m4/localtime-buffer.m4, m4/lstat.m4, m4/malloca.m4, m4/malloc.m4, m4/math_h.m4, m4/mbrtowc.m4, m4/mbsinit.m4, m4/mbstate_t.m4, m4/memchr.m4, m4/mempcpy.m4, m4/minmax.m4, m4/mkdir.m4, m4/mkstemp.m4, m4/mkstemps.m4, m4/mmap-anon.m4, m4/msvc-inval.m4, m4/msvc-nothrow.m4, m4/multiarch.m4, m4/nocrash.m4, m4/off_t.m4, m4/pathmax.m4, m4/printf.m4, m4/quotearg.m4, m4/quote.m4, m4/rawmemchr.m4, m4/secure_getenv.m4, m4/size_max.m4, m4/sleep.m4, m4/ssize_t.m4, m4/stat.m4, m4/stat-time.m4, m4/stdalign.m4, m4/stdbool.m4, m4/stddef_h.m4, m4/std-gnu11.m4, m4/stdint_h.m4, m4/stdint.m4, m4/stdio_h.m4, m4/stdlib_h.m4, m4/stpcpy.m4, m4/strcase.m4, m4/strchrnul.m4, m4/strerror.m4, m4/string_h.m4, m4/strings_h.m4, m4/strndup.m4, m4/strnlen.m4, m4/strverscmp.m4, m4/sysexits.m4, m4/sys_socket_h.m4, m4/sys_stat_h.m4, m4/sys_time_h.m4, m4/sys_types_h.m4, m4/sys_wait_h.m4, m4/tempname.m4, m4/threadlib.m4, m4/time_h.m4, m4/unistd_h.m4, m4/vasnprintf.m4, m4/vsnprintf.m4, m4/warn-on-use.m4, m4/wchar_h.m4, m4/wchar_t.m4, m4/wctype_h.m4, m4/wint_t.m4, m4/xalloc.m4, m4/xsize.m4: Update. * lib/inttypes.in.h, lib/lc-charset-dispatch.c, lib/lc-charset-dispatch.h, lib/locale.in.h, lib/mbrtowc-impl.h, lib/mbrtowc-impl-utf8.h, lib/mbtowc-lock.c, lib/mbtowc-lock.h, lib/setlocale-lock.c, lib/setlocale_null.c, lib/setlocale_null.h, m4/inttypes.m4, m4/locale_h.m4, m4/setlocale_null.m4, m4/visibility.m4, m4/zzgnulib.m4: New files.
60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
/* xalloc-oversized.h -- memory allocation size checking
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Copyright (C) 1990-2000, 2003-2004, 2006-2020 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef XALLOC_OVERSIZED_H_
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#define XALLOC_OVERSIZED_H_
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#include <stddef.h>
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#include <stdint.h>
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/* True if N * S would overflow in a size_t calculation,
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or would generate a value larger than PTRDIFF_MAX.
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This expands to a constant expression if N and S are both constants.
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By gnulib convention, SIZE_MAX represents overflow in size
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calculations, so the conservative size_t-based dividend to use here
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is SIZE_MAX - 1. */
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#define __xalloc_oversized(n, s) \
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((size_t) (PTRDIFF_MAX < SIZE_MAX ? PTRDIFF_MAX : SIZE_MAX - 1) / (s) < (n))
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#if PTRDIFF_MAX < SIZE_MAX
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typedef ptrdiff_t __xalloc_count_type;
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#else
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typedef size_t __xalloc_count_type;
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#endif
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/* Return 1 if an array of N objects, each of size S, cannot exist
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reliably due to size or ptrdiff_t arithmetic overflow. S must be
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positive and N must be nonnegative. This is a macro, not a
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function, so that it works correctly even when SIZE_MAX < N. */
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#if 7 <= __GNUC__
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# define xalloc_oversized(n, s) \
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__builtin_mul_overflow_p (n, s, (__xalloc_count_type) 1)
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#elif 5 <= __GNUC__ && !defined __ICC && !__STRICT_ANSI__
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# define xalloc_oversized(n, s) \
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(__builtin_constant_p (n) && __builtin_constant_p (s) \
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? __xalloc_oversized (n, s) \
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: ({ __xalloc_count_type __xalloc_count; \
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__builtin_mul_overflow (n, s, &__xalloc_count); }))
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/* Other compilers use integer division; this may be slower but is
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more portable. */
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#else
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# define xalloc_oversized(n, s) __xalloc_oversized (n, s)
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#endif
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#endif /* !XALLOC_OVERSIZED_H_ */
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