gcc/testsuite/gcc.dg/loop-2.c

   1 /* PR optimization/10171 */
   2 /* Bug: unroll_loop misoptimized the function so that we got
   3    0 iterations of the loop rather than the correct 1.  */
   4 /* { dg-do run } */
   5
   6 extern void abort (void);
   7 extern void exit (int);
   8
   9 __inline__ int tag() { return 0; }
  10
  11 void f ();
  12
  13 int main() {
  14   int i;
  15   for (i = 0; i < (tag() ? 2 : 1); i++)
  16     f();
  17   abort ();
  18 }
  19
  20 void f ()
  21 {
  22   exit (0);
  23 }