tests/ui/rfc-1445-restrict-constants-in-patterns/issue-6804.rs

   1 // Matching against NaN should result in a warning
   2
   3 #![allow(unused)]
   4 #![deny(illegal_floating_point_literal_pattern)]
   5
   6 const NAN: f64 = f64::NAN;
   7
   8 fn main() {
   9     let x = NAN;
  10     match x {
  11         NAN => {}, //~ ERROR floating-point types cannot be used
  12         //~| WARN this was previously accepted by the compiler but is being phased out
  13         _ => {},
  14     };
  15
  16     match [x, 1.0] {
  17         [NAN, _] => {}, //~ ERROR floating-point types cannot be used
  18         //~| WARN this was previously accepted by the compiler but is being phased out
  19         _ => {},
  20     };
  21 }