1  /* Copyright (C) 2000  Free Software Foundation.
       2  
       3     Ensure builtin memcpy and strcpy perform correctly.
       4  
       5     Written by Jakub Jelinek, 11/24/2000.  */
       6  
       7  extern void abort (void);
       8  extern char *strcpy (char *, const char *);
       9  typedef __SIZE_TYPE__ size_t;
      10  extern void *memcpy (void *, const void *, size_t);
      11  extern int memcmp (const void *, const void *, size_t);
      12  
      13  char p[32] = "";
      14  
      15  void
      16  main_test (void)
      17  {
      18    if (strcpy (p, "abcde") != p || memcmp (p, "abcde", 6))
      19      abort ();
      20    if (strcpy (p + 16, "vwxyz" + 1) != p + 16 || memcmp (p + 16, "wxyz", 5))
      21      abort ();
      22    if (strcpy (p + 1, "") != p + 1 || memcmp (p, "a\0cde", 6))
      23      abort ();  
      24    if (strcpy (p + 3, "fghij") != p + 3 || memcmp (p, "a\0cfghij", 9))
      25      abort ();
      26    if (memcpy (p, "ABCDE", 6) != p || memcmp (p, "ABCDE", 6))
      27      abort ();
      28    if (memcpy (p + 16, "VWX" + 1, 2) != p + 16 || memcmp (p + 16, "WXyz", 5))
      29      abort ();
      30    if (memcpy (p + 1, "", 1) != p + 1 || memcmp (p, "A\0CDE", 6))
      31      abort ();  
      32    if (memcpy (p + 3, "FGHI", 4) != p + 3 || memcmp (p, "A\0CFGHIj", 9))
      33      abort ();
      34  
      35    /* Test at least one instance of the __builtin_ style.  We do this
      36       to ensure that it works and that the prototype is correct.  */
      37    if (__builtin_strcpy (p, "abcde") != p || memcmp (p, "abcde", 6))
      38      abort ();
      39    if (__builtin_memcpy (p, "ABCDE", 6) != p || memcmp (p, "ABCDE", 6))
      40      abort ();
      41  }