1  /* PR middle-end/82456 - missing -Wstringop-overflow on strcpy reading past
       2     the end of an array
       3     { dg-do compile }
       4     { dg-options "-O2 -Wall" } */
       5  
       6  void fcst (char *d)
       7  {
       8    char a[2] = "0";
       9  
      10    __builtin_strcpy (d, a + 3);    // { dg-warning "\\\[-W(array-bounds|stringop-overread)" }
      11  }
      12  
      13  void frng (char *d, int i)
      14  {
      15    char a[2] = "0";
      16  
      17    if (i < 3)
      18      i = 3;
      19  
      20    __builtin_strcpy (d, a + i);    // { dg-warning "\\\[-W(array-bounds|stringop-overread)" }
      21  }
      22  
      23  void gcst (char *d)
      24  {
      25    char a[2] = "0";
      26  
      27    __builtin_strcpy (d, a + 2);    // { dg-warning "\\\[-W(array-bounds|stringop-overread)" }
      28  }
      29  
      30  void grng (char *d, int i)
      31  {
      32    char a[2] = "0";
      33  
      34    if (i < 2)
      35      i = 2;
      36  
      37    __builtin_strcpy (d, a + i);    // { dg-warning "\\\[-W(array-bounds|stringop-overread)" }
      38  }
      39  
      40  /* { dg-prune-output "-Wuninitialized" } */