gcc/testsuite/gcc.dg/torture/pr64853.c

   1 /* { dg-do run } */
   2
   3 struct S
   4 {
   5   int f1;
   6 };
   7
   8 static struct S a = { 1 };
   9 char b;
  10 static unsigned char *c = &b;
  11 int d, e, f;
  12
  13 int
  14 fn1 (int p)
  15 {
  16   return 0 ? 0 : p - 1;
  17 }
  18
  19 static int
  20 fn2 (struct S p)
  21 {
  22   int g = 200;
  23   for (e = 4; e; e = fn1 (e))
  24     {
  25       for (; d; d++)
  26         ;
  27       *c &= p.f1 & g;
  28       g = --*c;
  29       if (f)
  30         return 0;
  31     }
  32   return 0;
  33 }
  34
  35 int
  36 main ()
  37 {
  38   fn2 (a);
  39
  40   if (b != 0)
  41     __builtin_abort ();
  42
  43   return 0;
  44 }