From 8fe12c7dad6d0a17a520fba6739b6355ae8d2409 Mon Sep 17 00:00:00 2001
From: Kjell Ahlstedt <kjell.ahlstedt@bredband.net>
Date: Sun, 15 Nov 2015 18:41:42 +0100
Subject: mm-warnings.m4: Fix MM_ARG_ENABLE_WARNINGS for C++11

* macros/mm-warnings.m4: Don't compare a pointer with 0 in the test program.
It does not work well with the -Wzero-as-null-pointer-constant option.
Bug #757979.
---
 macros/mm-warnings.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'macros')

diff --git a/macros/mm-warnings.m4 b/macros/mm-warnings.m4
index ca2645d..840a4fc 100644
--- a/macros/mm-warnings.m4
+++ b/macros/mm-warnings.m4
@@ -95,7 +95,7 @@ AS_IF([test "x$mm_warning_flags" != x],
   # Keep in mind that the dummy source must be devoid of any
   # problems that might cause diagnostics.
   AC_LANG_CONFTEST([AC_LANG_SOURCE([[
-int main(int argc, char** argv) { return (argv != 0) ? argc : 0; }
+int main(int argc, char** argv) { return !argv ? 0 : argc; }
 ]])])
   for mm_flag in $mm_warning_flags
   do
-- 
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