From 7919e7f7e8fa4965ae297ecfed826b0f0ecfea93 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 14 Dec 2007 02:54:08 +0000
Subject: * lib/mkmf.rb (try_var): should fail for functions.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@14224 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 configure.in | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index 6a5f302d10..0a73dd7581 100644
--- a/configure.in
+++ b/configure.in
@@ -577,13 +577,14 @@ AC_CACHE_CHECK([for external $1], rb_cv_var_$1,
   [rb_cv_var_$1=no
   AC_TRY_COMPILE([#define _XOPEN_SOURCE 1
     $2
-    void *t;],
+    const volatile void *volatile t;],
     [t = &(&$1)[0];],
     [for t in $3; do
       AC_TRY_COMPILE([#define _XOPEN_SOURCE 1
         $2
-        extern $t $1;],
-        [void *t = &(&$1)[0];],
+        extern $t $1;
+        const volatile void *volatile t;],
+        [t = &(&$1)[0];],
         [rb_cv_var_$1=$t; break])
     done])])
 if test "[$rb_cv_var_]$1" != no; then
-- 
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