From: Akim Demaille <akim@epita.fr>
Date: Wed, 5 Sep 2001 08:46:53 +0000 (+0000)
Subject: * lib/autoconf/c.m4 (AC_LANG_BOOL_COMPILE_TRY(C)): Use `_array_'
X-Git-Tag: AUTOCONF-2.52f~165
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=503e11606c2c95e06e0a2c2e9e0e7ea5f62b9fb1;p=thirdparty%2Fautoconf.git

* lib/autoconf/c.m4 (AC_LANG_BOOL_COMPILE_TRY(C)): Use `_array_'
to avoid GCC warnings.
From Uwe Seimet.
---

diff --git a/ChangeLog b/ChangeLog
index 6b909cbfb..06c09a757 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2001-09-05  Akim Demaille  <akim@epita.fr>
+
+	* lib/autoconf/c.m4 (AC_LANG_BOOL_COMPILE_TRY(C)): Use `_array_'
+	to avoid GCC warnings.
+	From Uwe Seimet.
+
 2001-09-05  Akim Demaille  <akim@epita.fr>
 
 	* bin/autom4te.in: --language is -l, not -s.
diff --git a/THANKS b/THANKS
index de55ddd17..7aa996c54 100644
--- a/THANKS
+++ b/THANKS
@@ -155,6 +155,7 @@ Tom Purcell                 Tom.Purcell@wang.com
 Tom Tromey                  tromey@cygnus.com
 Tom Yu                      tlyu@mit.edu
 Tony Leneis                 tony@plaza.ds.adp.com
+Uwe Seimet                  us@orbacus.com
 Viktor Dukhovni             viktor@anaheim.esm.com
 Volker Borchert             bt@teknon.de
 Werner Lemberg              wl@gnu.org
diff --git a/lib/autoconf/c.m4 b/lib/autoconf/c.m4
index e908d005a..5bdeddeca 100644
--- a/lib/autoconf/c.m4
+++ b/lib/autoconf/c.m4
@@ -194,8 +194,12 @@ f = $1;
 
 # AC_LANG_BOOL_COMPILE_TRY(C)(PROLOGUE, EXPRESSION)
 # -------------------------------------------------
+# Be sure to use this array to avoid `unused' warnings, which are even
+# errors with `-W error'.
 m4_define([AC_LANG_BOOL_COMPILE_TRY(C)],
-[AC_LANG_PROGRAM([$1], [int _array_ @<:@1 - 2 * !($2)@:>@])])
+[AC_LANG_PROGRAM([$1], [int _array_ @<:@1 - 2 * !($2)@:>@;
+_array_ @<:@0@:>@ = 0
+])])
 
 
 # AC_LANG_INT_SAVE(C)(PROLOGUE, EXPRESSION)