30 lines
952 B
Rust
30 lines
952 B
Rust
// Copyright 2015 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(const_fn)]
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const X : usize = 2;
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const fn f(x: usize) -> usize {
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let mut sum = 0; //~ ERROR blocks in constant functions are limited
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for i in 0..x { //~ ERROR calls in constant functions
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//~| ERROR constant function contains unimplemented
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sum += i;
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}
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sum //~ ERROR E0080
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//~| non-constant path in constant
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}
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#[allow(unused_variables)]
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fn main() {
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let a : [i32; f(X)];
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//~^ WARNING constant evaluation error: non-constant path
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}
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