rust/tests/incremental/auxiliary/issue-79661.rs

#![feature(rustc_attrs)]

#[cfg_attr(any(rpass2, rpass3), doc = "Some comment")]
pub struct Foo;

pub struct Wrapper(Foo);
Properly re-use def path hash in incremental mode Fixes #79661 In incremental compilation mode, we update a `DefPathHash -> DefId` mapping every time we create a `DepNode` for a foreign `DefId`. This mapping is written out to the on-disk incremental cache, and is read by the next compilation session to allow us to lazily decode `DefId`s. When we decode a `DepNode` from the current incremental cache, we need to ensure that any previously-recorded `DefPathHash -> DefId` mapping gets recorded in the new mapping that we write out. However, PR #74967 didn't do this in all cases, leading to us being unable to decode a `DefPathHash` in certain circumstances. This PR refactors some of the code around `DepNode` deserialization to prevent this kind of mistake from happening again. 2020-12-04 17:37:21 -06:00			`#![feature(rustc_attrs)]`

			`#[cfg_attr(any(rpass2, rpass3), doc = "Some comment")]`
			`pub struct Foo;`

			`pub struct Wrapper(Foo);`