1  /* PR tree-optimization/99489 - ICE calling strncat after strncat
       2     { dg-do compile }
       3     { dg-options "-O2 -Wall" } */
       4  
       5  // Important -- see pr82429.
       6  char *stpcpy (char *, const char *);
       7  
       8  void fchar (char *d, char c, char *s)
       9  {
      10    __builtin_strcat (d, s);
      11    __builtin_strncat (d, &c, 1);
      12  }
      13  
      14  void fcstchar (char *d, char *s)
      15  {
      16    __builtin_strcat (d, s);
      17  
      18    const char c = 'x';
      19    __builtin_strncat (d, &c, 1);     // { dg-warning "-Wstringop-truncation" }
      20  }
      21  
      22  void fstr (char *d, char *s)
      23  {
      24    __builtin_strcat (d, s);
      25    __builtin_strncat (d, s, 1);
      26  }
      27  
      28  void farr (char *d, char *s)
      29  {
      30    __builtin_strcat (d, s);
      31  
      32    char a[] = "x";
      33    __builtin_strncat (d, a, 1);      // { dg-warning "-Wstringop-truncation" }
      34  }
      35  
      36  void flit (char *d, char *s)
      37  {
      38    __builtin_strcat (d, s);
      39    __builtin_strncat (d, "x", 1);    // { dg-warning "-Wstringop-truncation" "pr?????" { xfail *-*-*} }
      40                                      // { dg-warning "-Wstringop-overflow" "actual" { target *-*-*} .-1 }
      41  }