Merge branch 'master' into next

NEWS

@@ -1,18 +1,4 @@
-New in spot 2.7.1.dev  (not yet released)
+New in spot 2.7.2.dev (not yet released)
-
-  Documentation:
-
-  - A new page shows how to create explicit Kripke structures in C++
-    and Python.  See https://spot.lrde.epita.fr/tut52.html
-  - Another new page shows how to deal with LTLf formulas (i.e., LTL
-    with finite semantics) and how to translate those.
-    See https://spot.lrde.epita.fr/tut12.html
-
-  Python:
-
-  - Improved support for explicit Kripke structure.  It is now
-    possible to iterate over a kripke_graph object in a way similar to
-    twa_graph.
 
   Library:
 
@@ -29,6 +15,27 @@ New in spot 2.7.1.dev  (not yet released)
     'ltldo ltl2dstar -f 'GFa -> GFb' | autfilt --small' produces 1
     state instead of 4.)
 
+New in spot 2.7.2 (2019-03-17)
+
+  Python:
+
+  - Improved support for explicit Kripke structures.  It is now
+    possible to iterate over a kripke_graph object in a way similar to
+    twa_graph.
+
+  Documentation:
+
+  - A new page shows how to create explicit Kripke structures in C++
+    and Python.  See https://spot.lrde.epita.fr/tut52.html
+  - Another new page shows how to deal with LTLf formulas (i.e., LTL
+    with finite semantics) and how to translate those.
+    See https://spot.lrde.epita.fr/tut12.html
+
+  Build:
+
+  - Work around a spurious null dereference warning when compiling
+    with --coverage and g++ 8.3.0-3 from Debian unstable.
+
 New in spot 2.7.1 (2019-02-14)
 
   Build

configure.ac

@@ -21,7 +21,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 AC_PREREQ([2.61])
-AC_INIT([spot], [2.7.1.dev], [spot@lrde.epita.fr])
+AC_INIT([spot], [2.7.2.dev], [spot@lrde.epita.fr])
 AC_CONFIG_AUX_DIR([tools])
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([1.11 gnu tar-ustar color-tests parallel-tests])

doc/org/setup.org

@@ -1,11 +1,11 @@
 #+OPTIONS: H:2 num:nil toc:t html-postamble:nil
 #+EMAIL: spot@lrde.epita.fr
 #+HTML_LINK_HOME: index.html
-#+MACRO: SPOTVERSION 2.7.1
+#+MACRO: SPOTVERSION 2.7.2
-#+MACRO: LASTRELEASE 2.7.1
+#+MACRO: LASTRELEASE 2.7.2
-#+MACRO: LASTTARBALL [[http://www.lrde.epita.fr/dload/spot/spot-2.7.1.tar.gz][=spot-2.7.1.tar.gz=]]
+#+MACRO: LASTTARBALL [[http://www.lrde.epita.fr/dload/spot/spot-2.7.2.tar.gz][=spot-2.7.2.tar.gz=]]
-#+MACRO: LASTNEWS [[https://gitlab.lrde.epita.fr/spot/spot/blob/spot-2-7-1/NEWS][summary of the changes]]
+#+MACRO: LASTNEWS [[https://gitlab.lrde.epita.fr/spot/spot/blob/spot-2-7-2/NEWS][summary of the changes]]
-#+MACRO: LASTDATE 2019-02-14
+#+MACRO: LASTDATE 2019-03-17
 
 #+ATTR_HTML: :id spotlogo
 [[file:spot2.svg]]

doc/org/tut.org

@@ -13,7 +13,7 @@ If you have difficulties compiling the C++ examples, check out [[file:compile.or
 instructions]].
 
 Reading the [[file:concepts.org][concepts page]] might help if you are not familiar with some
-of the objects manipulated here.
+of the objects or concepts used here.
 
 * Examples with Shell, Python, and C++
 
@@ -25,7 +25,7 @@ three interfaces supported by Spot: shell commands, Python, or C++.
 - [[file:tut04.org][Testing the equivalence of two LTL formulas]]
 - [[file:tut10.org][Translating an LTL formula into a never claim]]
 - [[file:tut11.org][Translating an LTL formula into a monitor]]
-- [[file:tut12.org][Working with LTL formula with finite semantics]]
+- [[file:tut12.org][Working with LTL formulas with finite semantics]]
 - [[file:tut20.org][Converting a never claim into HOA]]
 - [[file:tut30.org][Converting Rabin (or Other) to Büchi, and simplifying it]]
 - [[file:tut31.org][Removing alternation]]

doc/org/tut12.org

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-#+TITLE: Working with LTL formula with finite semantics
+#+TITLE: Working with LTL formulas with finite semantics
 #+DESCRIPTION: Code example for using Spot to translate LTLf formulas
 #+INCLUDE: setup.org
 #+HTML_LINK_UP: tut.html

spot/twaalgos/ltl2taa.cc

@@ -1,6 +1,6 @@
 // -*- coding: utf-8 -*-
-// Copyright (C) 2009-2010, 2012-2016, 2018 Laboratoire de Recherche
+// Copyright (C) 2009-2010, 2012-2016, 2018-2019 Laboratoire de
-// et Développement de l'Epita (LRDE).
+// Recherche et Développement de l'Epita (LRDE).
 //
 // This file is part of Spot, a model checking library.
 //
@@ -20,6 +20,7 @@
 #include "config.h"
 #include <utility>
 #include <algorithm>
+#include <cassert>
 #include <spot/tl/unabbrev.hh>
 #include <spot/tl/nenoform.hh>
 #include <spot/tl/contain.hh>
@@ -340,6 +341,10 @@ namespace spot
         for (unsigned i = 0; i < vs.size(); ++i)
           pos[i] = vs[i].succ_.size();
 
+        // g++ (Debian 8.3.0-3) 8.3.0 in --coverage mode,
+        // reports a "potential null pointer dereference" on the next
+        // line without this assert...
+        assert(pos.size() > 0);
         while (pos[0] != 0)
         {
           std::vector<formula> u; // Union