src/test/compile-fail/issue-6804.rs

   1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // Matching against NaN should result in a warning
  12
  13 #![allow(unused)]
  14 #![deny(illegal_floating_point_literal_pattern)]
  15
  16 use std::f64::NAN;
  17
  18 fn main() {
  19     let x = NAN;
  20     match x {
  21         NAN => {}, //~ ERROR floating-point types cannot be used
  22         //~^ WARN this was previously accepted by the compiler but is being phased out
  23         _ => {},
  24     };
  25
  26     match [x, 1.0] {
  27         [NAN, _] => {}, //~ ERROR floating-point types cannot be used
  28         //~^ WARN this was previously accepted by the compiler but is being phased out
  29         _ => {},
  30     };
  31 }