gcc/testsuite/gcc.c-torture/execute/builtins/pr22237-lib.c

   1 extern void abort (void);
   2
   3 void *
   4 memcpy (void *dst, const void *src, __SIZE_TYPE__ n)
   5 {
   6   const char *srcp;
   7   char *dstp;
   8
   9   srcp = src;
  10   dstp = dst;
  11
  12   if (dst < src)
  13     {
  14       if (dst + n > src)
  15         abort ();
  16     }
  17   else
  18     {
  19       if (src + n > dst)
  20         abort ();
  21     }
  22
  23   while (n-- != 0)
  24     *dstp++ = *srcp++;
  25
  26   return dst;
  27 }