gcc/testsuite/gcc.dg/torture/pr57488.c

   1 /* { dg-do run } */
   2
   3 extern void abort (void);
   4
   5 int i, j, *pj = &j, **ppj = &pj;
   6 int x, *px = &x;
   7
   8 short s, *ps = &s, k;
   9
  10 unsigned short u, *pu = &u, **ppu = &pu;
  11
  12 char c, *pc = &c;
  13
  14 unsigned char v = 48;
  15
  16 static int
  17 bar (int p)
  18 {
  19   p = k;
  20   *px = **ppu = i;
  21   *ppj = &p;
  22   if (**ppj)
  23     *pj = p;
  24   return p;
  25 }
  26
  27 void __attribute__((noinline))
  28 foo ()
  29 {
  30   for (; i <= 3; i++)
  31     for (; j; j--);
  32
  33   u ^= bar (*pj);
  34
  35   for (k = 1; k >= 0; k--)
  36     {
  37       int l;
  38       bar (0);
  39       for (l = 1; l < 5; l++)
  40         {
  41           int m;
  42           for (m = 6; m; m--)
  43             {
  44               v--;
  45               *ps = *pc;
  46             }
  47         }
  48     }
  49 }
  50
  51 int
  52 main ()
  53 {
  54   foo ();
  55   if (v != 0)
  56     abort ();
  57   return 0;
  58 }