extern void exit (int); extern void abort (void); typedef union { struct { int f1, f2, f3, f4, f5, f6, f7, f8; long int f9, f10; int f11; } f; char s[56]; long int a; } T; __attribute__((noinline)) void test (T *t) { static int i = 11; if (t->f.f1 != i++) abort (); if (t->f.f2 || t->f.f3 || t->f.f4 || t->f.f5 || t->f.f6 || t->f.f7 || t->f.f8 || t->f.f9 || t->f.f10 || t->f.f11) abort (); if (i == 20) exit (0); } __attribute__((noinline)) void foo (int i) { T t; again: t = (T) { { ++i, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }; test (&t); goto again; } int main (void) { T *t1, *t2; int cnt = 0; t1 = (T *) 0; loop: t2 = t1; t1 = & (T) { .f.f9 = cnt++ }; if (cnt < 3) goto loop; if (t1 != t2 || t1->f.f9 != 2) abort (); foo (10); return 0; }