47 lines
1.1 KiB
Rust
47 lines
1.1 KiB
Rust
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// 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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// Test that we don't trigger on the blanket impl for all `&'a T` but
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// rather keep autoderefing and trigger on the underlying impl. To
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// know not to stop at the blanket, we have to recursively evaluate
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// the `T:Foo` bound.
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use std::kinds::Sized;
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// Note: this must be generic for the problem to show up
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trait Foo<A> for Sized? {
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fn foo(&self);
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}
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impl Foo<u8> for [u8] {
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fn foo(&self) {}
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}
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impl<'a, A, T> Foo<A> for &'a T where T: Foo<A> {
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fn foo(&self) {
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Foo::foo(*self)
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}
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}
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trait Bar {
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fn foo(&self);
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}
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struct MyType;
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impl Bar for MyType {
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fn foo(&self) {}
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}
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fn main() {
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let mut m = MyType;
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(&mut m).foo()
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}
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