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

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