gcc/testsuite/gcc.dg/pr81292-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fdump-tree-strlen" } */
   3
   4 #include "strlenopt.h"
   5
   6 char a[] = { 0, 'a', 0, 'b', 'c', 0, 'd', 'e', 'f', 0 };
   7
   8 int __attribute__ ((noinline, noclone))
   9 f1 (void)
  10 {
  11   a[0] = '1';
  12   a[strlen (a)] = '2';
  13   a[strlen (a)] = '3';
  14   return strlen (a);
  15 }
  16
  17 int __attribute__ ((noinline, noclone))
  18 f2 (char *a)
  19 {
  20   a[0] = '1';
  21   a[strlen (a)] = '2';
  22   a[strlen (a)] = '3';
  23   return strlen (a);
  24 }
  25
  26 int
  27 main (void)
  28 {
  29   char b[] = { 0, 0, 'a', 'b', 0, 0 };
  30   if (f1 () != 9 || f2 (b) != 5)
  31     __builtin_abort ();
  32   return 0;
  33 }
  34
  35 /* { dg-final { scan-tree-dump-times "strlen \\(" 6 "strlen" } } */