gcc/testsuite/gcc.c-torture/execute/builtins/strcpy.c

   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 }