Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.c-torture/execute/20111212-1.c @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 04ced10e8804 |
children |
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/* 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; }