gcc/testsuite/gcc.dg/torture/pr30375.c

   1 /* { dg-do run } */
   2 /* { dg-options "--param max-aliased-vops=0" } */
   3
   4 typedef struct _s {
   5     int a;
   6     int b;
   7     int c;
   8     int d;
   9 } s;
  10
  11 extern void abort(void);
  12
  13 void __attribute__((noinline)) g(s *p)
  14 {
  15   if (p->d != 0)
  16     abort ();
  17 }
  18
  19 char *c = (void*)0;
  20 void __attribute__((noinline)) f(void) { if (c) *c = 1; }
  21
  22 void test_signed_msg_encoding(void)
  23 {
  24     s signInfo = { sizeof(signInfo), 0 };
  25
  26     signInfo.b = 1;
  27     signInfo.c = 0;
  28     g(&signInfo);
  29     signInfo.d = 1;
  30     f();
  31 }
  32
  33 int main()
  34 {
  35   test_signed_msg_encoding ();
  36   test_signed_msg_encoding ();
  37   return 0;
  38 }