rust/crates/ide
bors 56d888689b Auto merge of #12793 - lowr:fix/12739, r=Veykril
fix: sort and deduplicate auto traits in trait object types

Fixes #12739

Chalk solver doesn't sort and deduplicate auto traits in trait object types, so we need to handle them ourselves in the lowering phase, just like [`rustc`](880416180b/compiler/rustc_typeck/src/astconv/mod.rs (L1487-L1488)) and [`chalk-integration`](https://github.com/rust-lang/chalk/blob/master/chalk-integration/src/lowering.rs#L575) do.

Quoting from [the Chalk book](https://rust-lang.github.io/chalk/book/types/rust_types.html#dyn-types):

> Note that -- for this purpose -- ordering of bounds is significant. That means that if you create a `dyn Foo + Send` and a `dyn Send + Foo`, chalk would consider them distinct types. The assumption is that bounds are ordered in some canonical fashion somewhere else.

Also, trait object types with more than one non-auto traits were previously allowed, but are now disallowed with this patch.
2022-08-31 08:28:12 +00:00
..
src Auto merge of #12793 - lowr:fix/12739, r=Veykril 2022-08-31 08:28:12 +00:00
Cargo.toml Disable all source-gen tests at compile time 2022-07-24 10:38:28 +02:00