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| author | Felix S. Klock II <pnkfelix@pnkfx.org> | 2018-08-30 13:16:59 +0200 |
|---|---|---|
| committer | Felix S. Klock II <pnkfelix@pnkfx.org> | 2018-09-06 13:00:26 +0200 |
| commit | 7834c2284801766f9925576e8f4d05d7cb7b23dd (patch) | |
| tree | b0676510293a1ab5317291bd79f4136754dae764 /src/test/ui/run-pass/methods/method-recursive-blanket-impl.rs | |
| parent | 20ca02569ae3e1dc29962e92739fbab632abf241 (diff) | |
| download | rust-7834c2284801766f9925576e8f4d05d7cb7b23dd.tar.gz rust-7834c2284801766f9925576e8f4d05d7cb7b23dd.zip | |
Migrated slew of run-pass tests to various subdirectories of `ui/run-pass/`.
Diffstat (limited to 'src/test/ui/run-pass/methods/method-recursive-blanket-impl.rs')
| -rw-r--r-- | src/test/ui/run-pass/methods/method-recursive-blanket-impl.rs | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/test/ui/run-pass/methods/method-recursive-blanket-impl.rs b/src/test/ui/run-pass/methods/method-recursive-blanket-impl.rs new file mode 100644 index 00000000000..6877bf376a6 --- /dev/null +++ b/src/test/ui/run-pass/methods/method-recursive-blanket-impl.rs @@ -0,0 +1,48 @@ +// Copyright 2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// Test that we don't trigger on the blanket impl for all `&'a T` but +// rather keep autoderefing and trigger on the underlying impl. To +// know not to stop at the blanket, we have to recursively evaluate +// the `T:Foo` bound. + +// pretty-expanded FIXME #23616 + +use std::marker::Sized; + +// Note: this must be generic for the problem to show up +trait Foo<A> { + fn foo(&self, a: A); +} + +impl Foo<u8> for [u8] { + fn foo(&self, a: u8) {} +} + +impl<'a, A, T> Foo<A> for &'a T where T: Foo<A> { + fn foo(&self, a: A) { + Foo::foo(*self, a) + } +} + +trait Bar { + fn foo(&self); +} + +struct MyType; + +impl Bar for MyType { + fn foo(&self) {} +} + +fn main() { + let mut m = MyType; + (&mut m).foo() +} |
