37 lines
1.2 KiB
Rust
37 lines
1.2 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(rustc_attrs)]
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#![feature(slice_patterns)]
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#![allow(dead_code)]
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// Matching against NaN should result in a warning
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use std::f64::NAN;
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#[rustc_error]
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fn main() { //~ ERROR compilation successful
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let x = NAN;
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match x {
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NAN => {},
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_ => {},
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};
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//~^^^ WARNING unmatchable NaN in pattern, use the is_nan method in a guard instead
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//~| WARNING floating point constants cannot be used
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//~| WARNING this was previously accepted
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match [x, 1.0] {
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[NAN, _] => {},
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_ => {},
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};
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//~^^^ WARNING unmatchable NaN in pattern, use the is_nan method in a guard instead
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//~| WARNING floating point constants cannot be used
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//~| WARNING this was previously accepted
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}
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