gcc/testsuite/gcc.dg/tree-ssa/pr22018.c

   1 /* { dg-do run }  */
   2 /* { dg-options -O2 }  */
   3
   4 void abort (void);
   5 void g(int);
   6 void f(int l)
   7 {
   8   unsigned i;
   9   for (i = 0; i < l; i++)
  10     {
  11       int y = i;
  12       /* VRP was wrongfully computing z's range to be [0, 0] instead
  13          of [-INF, 0].  */
  14       int z = y*-32;
  15       g(z);
  16     }
  17 }
  18
  19 void g(int i)
  20 {
  21   static int x = 0;
  22   if (i == 0)
  23     x ++;
  24   if (x > 1)
  25     abort ();
  26 }
  27
  28 int main(void)
  29 {
  30   f(3);
  31   return 0;
  32 }