stddef.h: Use a round-about cast in the definition of offsetof() to avoid warnings on machines with 64 bit addresses and when size_t is less than 64-bits.

2015-11-23 07:11:05 -06:00 · 2015-11-23 07:11:05 -06:00 · 25ab59bf80
parent 375419eaf2
commit 25ab59bf80
1 changed files with 1 additions and 1 deletions
--- a/include/stddef.h
+++ b/include/stddef.h
@ -65,7 +65,7 @@
 * Reference: Opengroup.org
 */

-#define offsetof(a,b) ((size_t)(&(((a *)(0))->b)))
+#define offsetof(type, member) ((size_t)(uintptr_t)&(((type *)0)->member))

 /****************************************************************************
 * Type Definitions