From cf2dff2b1e3fa55fa5415d524200070d0d7aacfe Mon Sep 17 00:00:00 2001 From: Albert Larsan <74931857+albertlarsan68@users.noreply.github.com> Date: Thu, 5 Jan 2023 09:13:28 +0100 Subject: Move /src/test to /tests --- tests/ui/methods/method-recursive-blanket-impl.rs | 41 +++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 tests/ui/methods/method-recursive-blanket-impl.rs (limited to 'tests/ui/methods/method-recursive-blanket-impl.rs') diff --git a/tests/ui/methods/method-recursive-blanket-impl.rs b/tests/ui/methods/method-recursive-blanket-impl.rs new file mode 100644 index 00000000000..a2db75b4e85 --- /dev/null +++ b/tests/ui/methods/method-recursive-blanket-impl.rs @@ -0,0 +1,41 @@ +// run-pass +#![allow(unused_variables)] +#![allow(unused_imports)] +// 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 { + fn foo(&self, a: A); +} + +impl Foo for [u8] { + fn foo(&self, a: u8) {} +} + +impl<'a, A, T> Foo for &'a T where T: Foo { + 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() +} -- cgit 1.4.1-3-g733a5