1  /* Test to verify that -Wstringop-overflow mentions the referenced object
       2     { dg-do compile }
       3     { dg-options "-O2 -Wall" } */
       4  
       5  static void copy_n (char *d, const char *s, int n)
       6  {
       7    while (n--)
       8      *d++ = *s++;
       9    *d = 0;           // { dg-warning "writing 1 byte into a region of size 0" }
      10  }
      11  
      12  void sink (void*);
      13  
      14  void call_copy_n (const char *s)
      15  {
      16    char a[7];        // { dg-message "at offset 7 into destination object 'a'" }
      17    copy_n (a, "1234567", 7);
      18    sink (a);
      19  }