static_assert="no"
cat > $TMPC << EOF
#include <assert.h>
+#include <stdlib.h>
+#undef offsetof
+#ifdef __compiler_offsetof
+#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
+#else
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
+#define container_of(ptr, type, member) ({ \
+ const typeof( ((type *)0)->member ) *__mptr = (ptr); \
+ (type *)( (char *)__mptr - offsetof(type,member) );})
+
+struct foo {
+ int a, b;
+};
+
int main(int argc, char **argv)
{
- _Static_assert( 1 == 1 , "Check");
+ _Static_assert(offsetof(struct foo, a) == 0 , "Check");
return 0 ;
}
EOF