Mesa (master): mesa: use standard offsetof() macro

[Brian Paul]

Module: Mesa
Branch: master
Commit: cdc7f681c87b0b6379de04066c25fdeb6de96405
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=cdc7f681c87b0b6379de04066c25fdeb6de96405

Author: Brian Paul <brianp at vmware.com>
Date:   Tue Apr 14 19:44:16 2009 -0600

mesa: use standard offsetof() macro

---

 src/mesa/main/extensions.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 147d923..5c4bea9 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -31,7 +31,7 @@
 #include "mtypes.h"
 
 
-#define F(x) (int)(uintptr_t)&(((struct gl_extensions *)0)->x)
+#define F(x) offsetof(struct gl_extensions, x)
 #define ON GL_TRUE
 #define OFF GL_FALSE