1  /* PR tree-optimization/86274 - SEGFAULT when logging std::to_string(NAN)
       2     { dg-do run }
       3     { dg-options "-O2 -Wall" }
       4     { dg-additional-options "-Wl,-u,_printf_float" { target newlib_nano_io } } */
       5  
       6  #define X        "0xdeadbeef"
       7  #define nan(x)   __builtin_nan (x)
       8  
       9  volatile double nan_0 = nan ("0");
      10  volatile double nan_x = nan (X);
      11  
      12  int main (void)
      13  {
      14    char buf[80];
      15  
      16    /* Verify that folded results match those of the library calls.  */
      17    int cst_n_0 = __builtin_sprintf (buf, "%g", nan ("0"));
      18    int cst_n_x = __builtin_sprintf (buf, "%g", nan (X));
      19  
      20    int var_n_0 = __builtin_sprintf (buf, "%g", nan_0);
      21    int var_n_x = __builtin_sprintf (buf, "%g", nan_x);
      22  
      23    if (cst_n_0 != var_n_0)
      24      __builtin_abort ();
      25  
      26    if (cst_n_x != var_n_x)
      27      __builtin_abort ();
      28  
      29    return 0;
      30  }