+#include <stdlib.h>
+#include <string.h>
#include "dumpmem.h"
struct bf {
unsigned x:13;
unsigned y:17;
unsigned z:3;
- char c;
+ unsigned char c;
double d;
unsigned w:9;
};
#ifdef offsetof
#undef offsetof
#endif
-#define offsetof(TYPE, MEMB) ((size_t) &((TYPE *)0)->MEMB)
+#define offsetof(TYPE, MEMB) ((char*) (&((TYPE *)0)->MEMB) - (char*) 0)
int main(int argc, char **argv) {
struct bf mybf = { 0xffffffff, 4097, 65537, 5, 0xff, 4.5, 257 };
- if(argc > 1) {
+ if(argc > 1)
dumpMem(&mybf, sizeof mybf);
- printf("sizeof mybf %d\n", sizeof mybf);
- printf("offset a = %d\n", offsetof(struct bf, a));
- printf("offset c = %d\n", offsetof(struct bf, c));
- printf("offset d = %d\n", offsetof(struct bf, d));
- }
+ printf("sizeof mybf %d\n", sizeof mybf);
+ printf("offset a = %d\n", offsetof(struct bf, a));
+ printf("offset c = %d\n", offsetof(struct bf, c));
+ printf("offset d = %d\n", offsetof(struct bf, d));
printf("int a (expected -1): %d\n", mybf.a);
printf("unsigned x:13 (expected 4097): %u\n", mybf.x);
printf("unsigned y:17 (expected 65537): %u\n", mybf.y);
printf("unsigned y:3 (expected 5): %u\n", mybf.z);
- printf("char c (expected ff): %x\n", mybf.c);
+ printf("unsigned char c (expected ff): %x\n", mybf.c);
printf("double d (expected 4.5): %.1f\n", mybf.d);
printf("unsigned w:9 (expected 257): %u\n", mybf.w);