1  extern void abort (void);
       2  extern int inside_main;
       3  
       4  __attribute__ ((__noinline__))
       5  void *
       6  mempcpy (void *dst, const void *src, __SIZE_TYPE__ n)
       7  {
       8    const char *srcp;
       9    char *dstp;
      10  
      11  #ifdef __OPTIMIZE__
      12    if (inside_main)
      13      abort ();
      14  #endif
      15  
      16    srcp = src;
      17    dstp = dst;
      18    while (n-- != 0)
      19      *dstp++ = *srcp++;
      20  
      21    return dstp;
      22  }