1  /* Copyright (C) 2000, 2003, 2004  Free Software Foundation.
       2  
       3     Ensure all expected transformations of builtin strrchr and rindex
       4     occur and perform correctly.
       5  
       6     Written by Jakub Jelinek, 11/7/2000.  */
       7  
       8  extern void abort (void);
       9  extern char *strrchr (const char *, int);
      10  extern char *rindex (const char *, int);
      11  
      12  char *bar = "hi world";
      13  int x = 7;
      14  
      15  void
      16  main_test (void)
      17  {
      18    const char *const foo = "hello world";
      19  
      20    if (strrchr (foo, 'x'))
      21      abort ();
      22    if (strrchr (foo, 'o') != foo + 7)
      23      abort ();
      24    if (strrchr (foo, 'e') != foo + 1)
      25      abort ();
      26    if (strrchr (foo + 3, 'e'))
      27      abort ();
      28    if (strrchr (foo, '\0') != foo + 11)
      29      abort ();
      30    if (strrchr (bar, '\0') != bar + 8)
      31      abort ();
      32    if (strrchr (bar + 4, '\0') != bar + 8)
      33      abort ();
      34    if (strrchr (bar + (x++ & 3), '\0') != bar + 8)
      35      abort ();
      36    if (x != 8)
      37      abort ();
      38    /* Test only one instance of rindex since the code path is the same
      39       as that of strrchr. */
      40    if (rindex ("hello", 'z') != 0)
      41      abort ();
      42  
      43    /* Test at least one instance of the __builtin_ style.  We do this
      44       to ensure that it works and that the prototype is correct.  */
      45    if (__builtin_strrchr (foo, 'o') != foo + 7)
      46      abort ();
      47    if (__builtin_rindex (foo, 'o') != foo + 7)
      48      abort ();
      49  }