gcc/testsuite/gcc.dg/strlenopt-29.c

   1 /* PR tree-optimization/71707 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -fdump-tree-strlen" } */
   4
   5 #include "strlenopt.h"
   6
   7 char a[32];
   8 size_t b;
   9
  10 __attribute__((noinline, noclone)) char *
  11 foo (void)
  12 {
  13   char *p = memcpy (a, "a", 2) + 1;
  14   memcpy (&a[1], "b", 2);
  15   b = strlen (a) + strlen (&a[1]) + strlen (p);
  16   return p;
  17 }
  18
  19 int
  20 main ()
  21 {
  22   if (foo () != &a[1] || b != 4)
  23     abort ();
  24   return 0;
  25 }
  26
  27 /* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen" } } */