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30 lines
856 B
Rust
30 lines
856 B
Rust
// Copyright 2016 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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#![deny(single_use_lifetimes)]
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#![allow(dead_code)]
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#![allow(unused_variables)]
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// Test that we DO warn for a lifetime used only once in an impl.
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//
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// (Actually, until #15872 is fixed, you can't use `'_` here, but
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// hopefully that will come soon.)
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struct Foo<'f> {
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data: &'f u32
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}
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impl<'f> Foo<'f> { //~ ERROR `'f` only used once
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fn inherent_a(&self) {
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}
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}
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fn main() { }
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