[SCM] GNU Autoconf source repository branch, master, updated. v2.67-14-g08b6974

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- Log -----------------------------------------------------------------
commit 08b6974837c2d042a6d86f77e2300e423d952930
Author: Bruno Haible <[email protected]>
Date:   Thu Aug 5 13:26:40 2010 +0200

    AC_FUNC_ALLOCA: modernize
    
    * lib/autoconf/functions.m4 (AC_FUNC_ALLOCA): Assume that alloca's
    return type is 'void *', not 'char *'.  Supply C89 prototype.
    Reported by Thomas Klausner.
    
    Signed-off-by: Eric Blake <[email protected]>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                 |    8 ++++++++
 lib/autoconf/functions.m4 |    3 ++-
 2 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 9ea06cb..3a998af 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2010-08-05  Bruno Haible  <[email protected]>
+	and Eric Blake  <[email protected]>
+
+	AC_FUNC_ALLOCA: modernize
+	* lib/autoconf/functions.m4 (AC_FUNC_ALLOCA): Assume that alloca's
+	return type is 'void *', not 'char *'.  Supply C89 prototype.
+	Reported by Thomas Klausner.
+
 2010-08-04  Ralf Wildenhues  <[email protected]>
 
 	Fix testsuite failure due to bugs in third-party aclocal macros.
diff --git a/lib/autoconf/functions.m4 b/lib/autoconf/functions.m4
index d5da206..576de02 100644
--- a/lib/autoconf/functions.m4
+++ b/lib/autoconf/functions.m4
@@ -357,6 +357,7 @@ AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
 AN_FUNCTION([alloca], [AC_FUNC_ALLOCA])
 AN_HEADER([alloca.h], [AC_FUNC_ALLOCA])
 AC_DEFUN([AC_FUNC_ALLOCA],
+[AC_REQUIRE([AC_TYPE_SIZE_T])]dnl
 [# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
 # for constant arguments.  Useless!
 AC_CACHE_CHECK([for working alloca.h], ac_cv_working_alloca_h,
@@ -388,7 +389,7 @@ AC_CACHE_CHECK([for alloca], ac_cv_func_alloca_works,
  #pragma alloca
 #   else
 #    ifndef alloca /* predefined by HP cc +Olibcalls */
-char *alloca ();
+void *alloca (size_t);
 #    endif
 #   endif
 #  endif


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