gcc/testsuite/gcc.dg/tree-ssa/pr107293.c

   1 // { dg-do run }
   2 // { dg-options "-w -Os" }
   3
   4 short a;
   5 int b[1];
   6
   7 int c(int p) {
   8   return (p < 0) ? 0 : 10 + ((p / 100 - 16) / 4);
   9 }
  10
  11 void f(int n) {
  12   while (1) {
  13     int m = n;
  14     while ((m ) )
  15       m /= 2;
  16     break;
  17   }
  18 }
  19
  20 void g() {
  21   int h = a = 0;
  22   for (; h + a <= 0; a++) {
  23     if (b[c(a - 6)])
  24       break;
  25     f(a);
  26   }
  27 }
  28 int main() {
  29   g();
  30   if (a != 1)
  31     __builtin_abort ();
  32 }