view gcc/testsuite/gcc.dg/tree-ssa/pr22230.c @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
line wrap: on
line source

/* { dg-do run } */
/* { dg-options "-O1 -ftree-vrp" } */

/* PR tree-optimization/22230

   The meet of the ranges in "i*i" was not computed correctly, leading
   gcc to believe that a was equal to 0 after the loop.  */

extern void abort (void) __attribute__((noreturn));

int main (void)
{
  long a, i;

  for (i = 0; i < 5; i++)
    a = i * i;
  if (a != 16)
    abort ();
  return 0;
}