5de8ed541a
matching.
This breaks code like:
struct Foo<'a,'b> {
x: &'a int,
y: &'b int,
}
trait Tr {
fn foo(x: Self) {}
}
impl<'a,'b> Tr for Foo<'a,'b> {
fn foo(x: Foo<'b,'a>) {} // <-- bad
}
Change this code to not contain a lifetime mismatch error. For example:
struct Foo<'a,'b> {
x: &'a int,
y: &'b int,
}
trait Tr {
fn foo(x: Self) {}
}
impl<'a,'b> Tr for Foo<'a,'b> {
fn foo(x: Foo<'a,'b>) {} // OK
}
Closes #15517.
[breaking-change]
31 lines
843 B
Rust
31 lines
843 B
Rust
// Copyright 2012 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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// Tests that the trait matching code takes lifetime parameters into account.
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// (Issue #15517.)
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struct Foo<'a,'b> {
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x: &'a int,
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y: &'b int,
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}
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trait Tr {
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fn foo(x: Self) {}
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}
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impl<'a,'b> Tr for Foo<'a,'b> {
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fn foo(x: Foo<'b,'a>) {
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//~^ ERROR method not compatible with trait
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//~^^ ERROR method not compatible with trait
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}
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}
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fn main(){}
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