[SCM] GNU Autoconf source repository branch, master, updated. v2.68-101-gb854606

[Paul Eggert]

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- Log -----------------------------------------------------------------
commit b854606885ca849e0b5a1488b6dc82105d3c138d
Author: Paul Eggert <address@hidden>
Date:   Wed Dec 7 22:41:04 2011 -0800

    AC_LANG_BOOL_COMPILE_TRY(C): port to g++ with warnings
    
    * lib/autoconf/c.m4 (AC_LANG_BOOL_COMPILE_TRY(C)): Use the
    array as well as setting it, to pacify g++.  Reported by
    Werner Lemberg in
    <http://lists.gnu.org/archive/html/autoconf/2011-12/msg00005.html>.

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

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

diff --git a/ChangeLog b/ChangeLog
index f9f4b90..0f67f89 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2011-12-07  Paul Eggert  <address@hidden>
+
+       AC_LANG_BOOL_COMPILE_TRY(C): port to g++ with warnings
+       * lib/autoconf/c.m4 (AC_LANG_BOOL_COMPILE_TRY(C)): Use the
+       array as well as setting it, to pacify g++.  Reported by
+       Werner Lemberg in
+       <http://lists.gnu.org/archive/html/autoconf/2011-12/msg00005.html>.
+
 2011-12-05  Paul Eggert  <address@hidden>
 
        doc: document GNU make's \#
diff --git a/lib/autoconf/c.m4 b/lib/autoconf/c.m4
index 88785d1..0fdf9dd 100644
--- a/lib/autoconf/c.m4
+++ b/lib/autoconf/c.m4
@@ -190,7 +190,8 @@ choke me
 # errors with `-W error'.
 m4_define([AC_LANG_BOOL_COMPILE_TRY(C)],
 [AC_LANG_PROGRAM([$1], [static int test_array @<:@1 - 2 * !($2)@:>@;
-test_array @<:@0@:>@ = 0
+test_array @<:@0@:>@ = 0;
+return test_array @<:@0@:>@;
 ])])
 
 


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