5 files changed, 124 insertions, 21 deletions

diff --git a/lib/execinfo.c b/lib/execinfo.c
new file mode 100644
index 00000000000..0bcd9f078ba
--- /dev/null
+++ b/lib/execinfo.c
@@ -0,0 +1,3 @@
+#include <config.h>
+#define _GL_EXECINFO_INLINE _GL_EXTERN_INLINE
+#include "execinfo.h"
diff --git a/lib/execinfo.in.h b/lib/execinfo.in.h
new file mode 100644
index 00000000000..d76b0e1b771
--- /dev/null
+++ b/lib/execinfo.in.h
@@ -0,0 +1,54 @@
+/* Information about executables.
+
+   Copyright (C) 2012 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 Paul Eggert.  */
+
+#ifndef _GL_EXECINFO_H
+#define _GL_EXECINFO_H
+
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GL_EXECINFO_INLINE
+# define _GL_EXECINFO_INLINE _GL_INLINE
+#endif
+
+_GL_EXECINFO_INLINE int
+backtrace (void **buffer, int size)
+{
+  (void) buffer;
+  (void) size;
+  return 0;
+}
+
+_GL_EXECINFO_INLINE char **
+backtrace_symbols (void *const *buffer, int size)
+{
+  (void) buffer;
+  (void) size;
+  return 0;
+}
+
+_GL_EXECINFO_INLINE void
+backtrace_symbols_fd (void *const *buffer, int size, int fd)
+{
+  (void) buffer;
+  (void) size;
+  (void) fd;
+}
+
+_GL_INLINE_HEADER_END
+
+#endif
diff --git a/lib/gnulib.mk b/lib/gnulib.mk
index a90cc59bbde..d49eb4fdf7a 100644
--- a/lib/gnulib.mk
+++ b/lib/gnulib.mk
@@ -21,7 +21,7 @@
 # the same distribution terms as the rest of that program.
 #
 # Generated by gnulib-tool.
-# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --avoid=errno --avoid=fcntl --avoid=fcntl-h --avoid=fstat --avoid=msvc-inval --avoid=msvc-nothrow --avoid=raise --avoid=select --avoid=sigprocmask --avoid=sys_types --avoid=threadlib --makefile-name=gnulib.mk --conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca-opt c-ctype c-strcase careadlinkat crypto/md5 crypto/sha1 crypto/sha256 crypto/sha512 dtoastr dtotimespec dup2 environ filemode getloadavg getopt-gnu gettime gettimeofday ignore-value intprops largefile lstat manywarnings mktime pselect pthread_sigmask readlink socklen stat-time stdalign stdarg stdbool stdio strftime strtoimax strtoumax symlink sys_stat sys_time time timespec-add timespec-sub utimens warnings
+# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --avoid=errno --avoid=fcntl --avoid=fcntl-h --avoid=fstat --avoid=msvc-inval --avoid=msvc-nothrow --avoid=raise --avoid=select --avoid=sigprocmask --avoid=sys_types --avoid=threadlib --makefile-name=gnulib.mk --conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca-opt c-ctype c-strcase careadlinkat crypto/md5 crypto/sha1 crypto/sha256 crypto/sha512 dtoastr dtotimespec dup2 environ execinfo filemode getloadavg getopt-gnu gettime gettimeofday ignore-value intprops largefile lstat manywarnings mktime pselect pthread_sigmask readlink socklen stat-time stdalign stdarg stdbool stdio strftime strtoimax strtoumax symlink sys_stat sys_time time timespec-add timespec-sub utimens warnings
 
 
 MOSTLYCLEANFILES += core *.stackdump
@@ -150,6 +150,31 @@ EXTRA_libgnu_a_SOURCES += dup2.c
 
 ## end   gnulib module dup2
 
+## begin gnulib module execinfo
+
+BUILT_SOURCES += $(EXECINFO_H)
+
+# We need the following in order to create <execinfo.h> when the system
+# doesn't have one that works.
+if GL_GENERATE_EXECINFO_H
+execinfo.h: execinfo.in.h $(top_builddir)/config.status
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          cat $(srcdir)/execinfo.in.h; \
+        } > $@-t && \
+        mv $@-t $@
+else
+execinfo.h: $(top_builddir)/config.status
+        rm -f $@
+endif
+MOSTLYCLEANFILES += execinfo.h execinfo.h-t
+
+EXTRA_DIST += execinfo.c execinfo.in.h
+
+EXTRA_libgnu_a_SOURCES += execinfo.c
+
+## end   gnulib module execinfo
+
 ## begin gnulib module filemode
 
 libgnu_a_SOURCES += filemode.c
diff --git a/lib/makefile.w32-in b/lib/makefile.w32-in
index 11251d55f77..f0cea56f829 100644
--- a/lib/makefile.w32-in
+++ b/lib/makefile.w32-in
@@ -28,6 +28,7 @@ GNULIBOBJS = $(BLD)/c-ctype.$(O) \
              $(BLD)/c-strncasecmp.$(O) \
              $(BLD)/dtoastr.$(O) \
              $(BLD)/dtotimespec.$(O)  \
+             $(BLD)/execinfo.$(O)  \
              $(BLD)/getopt.$(O)  \
              $(BLD)/getopt1.$(O) \
              $(BLD)/gettime.$(O) \
@@ -129,6 +130,11 @@ $(BLD)/dtotimespec.$(O) : \
         $(GNU_LIB)/timespec.h \
         $(CONFIG_H)
 
+$(BLD)/execinfo.$(O) : \
+        $(GNU_LIB)/execinfo.c \
+        $(GNU_LIB)/execinfo.h \
+        $(CONFIG_H)
+
 $(BLD)/getopt.$(O) : \
         $(GNU_LIB)/getopt.c \
         $(GNU_LIB)/getopt.h \
@@ -299,3 +305,7 @@ getopt_h:
               < getopt.in.h > getopt_.h-t
         $(CP) getopt_.h-t getopt_.h
         - $(DEL) getopt_.h-t
+
+execinfo.h: execinfo.in.h
+        $(CP) execinfo.in.h $@
+
diff --git a/lib/stdbool.in.h b/lib/stdbool.in.h
index ed1f9aa488b..1f8caee4f2d 100644
--- a/lib/stdbool.in.h
+++ b/lib/stdbool.in.h
@@ -66,24 +66,19 @@
 # undef true
 #endif
 
-/* For the sake of symbolic names in gdb, we define true and false as
-   enum constants, not only as macros.
-   It is tempting to write
-      typedef enum { false = 0, true = 1 } _Bool;
-   so that gdb prints values of type 'bool' symbolically. But if we do
-   this, values of type '_Bool' may promote to 'int' or 'unsigned int'
-   (see ISO C 99 6.7.2.2.(4)); however, '_Bool' must promote to 'int'
-   (see ISO C 99 6.3.1.1.(2)).  So we add a negative value to the
-   enum; this ensures that '_Bool' promotes to 'int'.  */
-#if defined __cplusplus || (defined __BEOS__ && !defined __HAIKU__)
+#ifdef __cplusplus
+# define _Bool bool
+# define bool bool
+#else
+# if defined __BEOS__ && !defined __HAIKU__
   /* A compiler known to have 'bool'.  */
   /* If the compiler already has both 'bool' and '_Bool', we can assume they
      are the same types.  */
-# if !@HAVE__BOOL@
+#  if !@HAVE__BOOL@
 typedef bool _Bool;
-# endif
-#else
-# if !defined __GNUC__
+#  endif
+# else
+#  if !defined __GNUC__
    /* If @HAVE__BOOL@:
         Some HP-UX cc and AIX IBM C compiler versions have compiler bugs when
         the built-in _Bool type is used.  See
@@ -103,19 +98,35 @@ typedef bool _Bool;
           "Invalid enumerator. (badenum)" with HP-UX cc on Tru64.
         The only benefit of the enum, debuggability, is not important
         with these compilers.  So use 'signed char' and no enum.  */
-#  define _Bool signed char
-# else
+#   define _Bool signed char
+#  else
    /* With this compiler, trust the _Bool type if the compiler has it.  */
-#  if !@HAVE__BOOL@
+#   if !@HAVE__BOOL@
+   /* For the sake of symbolic names in gdb, define true and false as
+      enum constants, not only as macros.
+      It is tempting to write
+         typedef enum { false = 0, true = 1 } _Bool;
+      so that gdb prints values of type 'bool' symbolically.  But then
+      values of type '_Bool' might promote to 'int' or 'unsigned int'
+      (see ISO C 99 6.7.2.2.(4)); however, '_Bool' must promote to 'int'
+      (see ISO C 99 6.3.1.1.(2)).  So add a negative value to the
+      enum; this ensures that '_Bool' promotes to 'int'.  */
 typedef enum { _Bool_must_promote_to_int = -1, false = 0, true = 1 } _Bool;
+#   endif
 #  endif
 # endif
+# define bool _Bool
 #endif
-#define bool _Bool
 
 /* The other macros must be usable in preprocessor directives.  */
-#define false 0
-#define true 1
+#ifdef __cplusplus
+# define false false
+# define true true
+#else
+# define false 0
+# define true 1
+#endif
+
 #define __bool_true_false_are_defined 1
 
 #endif /* _GL_STDBOOL_H */