1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -Wformat-overflow" } */
       3  
       4  extern int sprintf (char *restrict, const char *restrict, ...)
       5       __attribute__ ((__nothrow__));
       6       extern int foo (void);
       7  
       8  int
       9  Fgenerate_new_buffer_name (void)
      10  {
      11    char number[2];
      12    int i = foo ();
      13    if (i < 0)
      14      __builtin_unreachable ();
      15    if (i >= 2)
      16      __builtin_unreachable ();
      17    return sprintf (number, "%d", i); /* { dg-bogus "writing" } */
      18  }