gcc/testsuite/gcc.c-torture/execute/pr35472.c

   1 extern void abort (void);
   2 extern void *memset (void *s, int c, __SIZE_TYPE__ n);
   3 struct S { int i[16]; };
   4 struct S *p;
   5 void __attribute__((noinline,noclone))
   6 foo(struct S *a, struct S *b) { a->i[0] = -1; p = b; }
   7 void test (void)
   8 {
   9   struct S a, b;
  10   memset (&a.i[0], '\0', sizeof (a.i));
  11   memset (&b.i[0], '\0', sizeof (b.i));
  12   foo (&a, &b);
  13   *p = a;
  14   *p = b;
  15   if (b.i[0] != -1)
  16     abort ();
  17 }
  18 int main()
  19 {
  20   test();
  21   return 0;
  22 }