From c4cd433db3195dd509ea8231f0231f9ffcaf81e4 Mon Sep 17 00:00:00 2001
From: danglin <danglin@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 2 Aug 2009 01:38:27 +0000
Subject: 	* gthr-dce.h (CONST_CAST2): Define if not defined. 
 (__gthread_setspecific): Use CONST_CAST2 to fix warning.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@150342 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/gthr-dce.h | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'gcc/gthr-dce.h')

diff --git a/gcc/gthr-dce.h b/gcc/gthr-dce.h
index be92813dc23..4226359f0a0 100644
--- a/gcc/gthr-dce.h
+++ b/gcc/gthr-dce.h
@@ -37,6 +37,15 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    DCE threads are based on POSIX threads draft 4, and many things
    have changed since then.  */
 
+/* Make sure CONST_CAST2 (original in system.h) is defined.  */
+#ifndef CONST_CAST2
+#ifdef __cplusplus
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
+#else
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
+#endif
+#endif
+
 #define __GTHREADS 1
 
 #include <pthread.h>
@@ -462,7 +471,8 @@ __gthread_getspecific (__gthread_key_t __key)
 static inline int
 __gthread_setspecific (__gthread_key_t __key, const void *__ptr)
 {
-  return __gthrw_(pthread_setspecific) (__key, (void *) __ptr);
+  return __gthrw_(pthread_setspecific)
+    (__key, CONST_CAST2(void *, const void *, __ptr));
 }
 
 static inline void
-- 
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