1  /* Copyright (C) 2000, 2003  Free Software Foundation.
       2  
       3     Ensure all expected transformations of builtin strstr occur and
       4     perform correctly in presence of redirect.  */
       5  
       6  #define ASMNAME(cname)  ASMNAME2 (__USER_LABEL_PREFIX__, cname)
       7  #define ASMNAME2(prefix, cname) STRING (prefix) cname
       8  #define STRING(x)    #x
       9  
      10  typedef __SIZE_TYPE__ size_t;
      11  extern void abort (void);
      12  extern char *strstr (const char *, const char *)
      13    __asm (ASMNAME ("my_strstr"));
      14  
      15  const char *p = "rld", *q = "hello world";
      16  
      17  void
      18  main_test (void)
      19  {
      20    const char *const foo = "hello world";
      21  
      22    if (strstr (foo, "") != foo)
      23      abort ();
      24    if (strstr (foo + 4, "") != foo + 4)
      25      abort ();
      26    if (strstr (foo, "h") != foo)
      27      abort ();
      28    if (strstr (foo, "w") != foo + 6)
      29      abort ();
      30    if (strstr (foo + 6, "o") != foo + 7)
      31      abort ();
      32    if (strstr (foo + 1, "world") != foo + 6)
      33      abort ();
      34    if (strstr (foo + 2, p) != foo + 8)
      35      abort ();
      36    if (strstr (q, "") != q)
      37      abort ();
      38    if (strstr (q + 1, "o") != q + 4)
      39      abort ();
      40  
      41    /* Test at least one instance of the __builtin_ style.  We do this
      42       to ensure that it works and that the prototype is correct.  */
      43    if (__builtin_strstr (foo + 1, "world") != foo + 6)
      44      abort ();
      45  }