Changeset 3736

Timestamp:

Oct 3, 2011, 2:11:48 AM (14 years ago)

Author:

bird

Message:

sys/cdefs.h: Our gcc 3.3.5 doesn't seem to grok offsetof.

File:

• trunk/libc/include/sys/cdefs.h (modified) (2 diffs)

trunk/libc/include/sys/cdefs.h

@@ -6 +6 @@
  * @changed bird: Check if stuff is defined before accessing it in #if. Stops -Wundef
  *                from bitching.
+ * @changed bird: __offsetof__ was apparently introduced in gcc 3.4.x.
  */
  
@@ -329 +330 @@
 #define __offsetof(type, field)  __builtin_offsetof(type, field)
 #else
-#ifndef __cplusplus
+#if !defined(__cplusplus) || !__GNUC_PREREQ(3,4) /* bird: __offsetof__ was introduced in 3.4.x.  */
 #define __offsetof(type, field) ((size_t)(&((type *)0)->field))
 #else