| /* PR tree-optimization/50569 */ |
| /* Reported by Paul Koning <pkoning@gcc.gnu.org> */ |
| /* Reduced testcase by Mikael Pettersson <mikpe@it.uu.se> */ |
| |
| struct event { |
| struct { |
| unsigned int sec; |
| } sent __attribute__((packed)); |
| }; |
| |
| void __attribute__((noinline,noclone)) frob_entry(char *buf) |
| { |
| struct event event; |
| |
| __builtin_memcpy(&event, buf, sizeof(event)); |
| if (event.sent.sec < 64) { |
| event.sent.sec = -1U; |
| __builtin_memcpy(buf, &event, sizeof(event)); |
| } |
| } |
| |
| int main(void) |
| { |
| union { |
| char buf[1 + sizeof(struct event)]; |
| int align; |
| } u; |
| |
| __builtin_memset(&u, 0, sizeof u); |
| |
| frob_entry(&u.buf[1]); |
| |
| return 0; |
| } |
