pr33615.c

来自「用于进行gcc测试」· C语言 代码 · 共 21 行

/* { dg-do compile } */
/* { dg-options "-O -fnon-call-exceptions -fdump-tree-lim-details -w" } */

extern volatile int y;

double
foo (double a, int x)
{
  while (x--)
    {
      y++;
      a += 1.0 / 0.0;
    }
  return a;
}

// The expression 1.0 / 0.0 should not be treated as a loop invariant
// if it may throw an exception.
// { dg-final { scan-tree-dump-times "invariant up to" 0 "lim" } }
// { dg-final { cleanup-tree-dump "lim" } }