gcc/testsuite/gcc.dg/strlenopt-27.c


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/* { dg-do run } */
/* { dg-options "-O2 -fdump-tree-strlen" } */

#include "strlenopt.h"

__attribute__((noinline, noclone)) size_t
fn1 (char *p)
{
  strcpy (p, "foobar");
  return strlen (p + 2); // This strlen should be optimized into 4.
}

int
main (void)
{
  char p[] = "barfoo";
  if (fn1 (p) != 4)
    abort ();
  return 0;
}

/* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen" } } */
/* { dg-final { cleanup-tree-dump "strlen" } } */