1 /* { dg-do compile } */
2 /* { dg-options "-O2 -fdump-tree-optimized" } */
3 extern __SIZE_TYPE__ strlen (const char *) __attribute__ ((__pure__));
4 extern void link_error (void);
5 
6 void
foo(const char * str)7 foo (const char *str)
8 {
9   __SIZE_TYPE__ a = strlen (str);
10   __SIZE_TYPE__ b = strlen (str);
11   if (a != b)
12     link_error ();
13 }
14 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */
15