| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <sys/mman.h> | |
| @interface I0 { | |
| @public | |
| unsigned a:15; | |
| unsigned b: 9; | |
| } | |
| @end | |
| @implementation I0 | |
| @end | |
| void f0(I0 *s) { | |
| s->b = 1; | |
| } | |
| int main() { | |
| char *p = valloc(4096*2); | |
| mprotect(p+4096, 4096, 0); | |
| I0 *s = (I0 *)(p+4096-4); | |
| f0(s); | |
| return 0; | |
| } |