37 lines
1.2 KiB
Rust
37 lines
1.2 KiB
Rust
// Copyright 2013 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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// Test that shadowed lifetimes generate an error.
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struct Foo<'a>(&'a isize);
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impl<'a> Foo<'a> {
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//~^ NOTE shadowed lifetime `'a` declared here
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fn shadow_in_method<'a>(&'a self) -> &'a isize {
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//~^ ERROR lifetime name `'a` shadows a lifetime name that is already in scope
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self.0
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}
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fn shadow_in_type<'b>(&'b self) -> &'b isize {
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//~^ NOTE shadowed lifetime `'b` declared here
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let x: for<'b> fn(&'b isize) = panic!();
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//~^ ERROR lifetime name `'b` shadows a lifetime name that is already in scope
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self.0
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}
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fn not_shadow_in_item<'b>(&'b self) {
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struct Bar<'a, 'b>(&'a isize, &'b isize); // not a shadow, separate item
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fn foo<'a, 'b>(x: &'a isize, y: &'b isize) { } // same
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}
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}
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fn main() {
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}
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