gcc/testsuite/gcc.dg/strlenopt-33.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fdump-tree-strlen" } */
   3
   4 #include "strlenopt.h"
   5
   6 volatile int v;
   7
   8 size_t __attribute__ ((noinline, noclone))
   9 f1 (char *b)
  10 {
  11   char a[30];
  12   v += 1;
  13   strcpy (a, b);
  14   // This needs to stay.
  15   int len1 = strlen (a);
  16   a[0] = '_';
  17   a[1] = 0;
  18   return len1 + strlen (a);
  19 }
  20
  21 size_t __attribute__ ((noinline, noclone))
  22 f2 (char *a, char *b)
  23 {
  24   v += 2;
  25   strcpy (a, b);
  26   // This needs to stay.
  27   int len1 = strlen (a);
  28   a[0] = '_';
  29   a[1] = 0;
  30   return len1 + strlen (a);
  31 }
  32
  33 int
  34 main ()
  35 {
  36   char a[30];
  37   if (f1 ("foo") != 4 || f2 (a, "foobar") != 7)
  38     abort ();
  39   return 0;
  40 }
  41
  42 /* { dg-final { scan-tree-dump-times "strlen \\(" 2 "strlen" } } */