struct test { int *x; } global_test; int global_int; int flag; void test (char *dummy) { static const struct test const_test = { &global_int }; struct test local_test; int i; for (i = 0; i < 1; i++) *dummy = 0; if (flag) __builtin_memset (dummy, 0, 16); local_test = const_test; global_test = local_test; }