Rollup of 5 pull requests #71566
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Rollup of 5 pull requests #71566
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There is no `Arc::map` equivalent to `LockGuard::map`
...instead of a `LockGuard` which means the lock is held for longer than necessary.
Co-Authored-By: Ralf Jung <post@ralfj.de>
make Map::def_kind take LocalDefId Co-Authored-By: Vadim Petrochenkov <vadim.petrochenkov@gmail.com> crates are DefKind::Mod
Add all remaining `DefKind`s. r? @eddyb or @Centril ~~I'm not sure if this is what you were thinking of. There are also a few places where I'm not sure what the correct choice is because I don't fully understand the meaning of some variants.~~ ~~In general, it feels a bit odd to add some of these as `DefKind`s (e.g. `Arm`) because they don't feel like definitions. Are there things that it makes sense not to add?~~
[breaking change] Disallow statics initializing themselves fixes rust-lang#71078 Self-initialization is unsound because it breaks privacy assumptions that unsafe code can make. In ```rust pub mod foo { #[derive(Debug, Copy, Clone)] pub struct Foo { x: (), } } pub static FOO: foo::Foo = FOO; ``` unsafe could could expect that ony functions inside the `foo` module were able to create a value of type `Foo`.
…he-arc, r=nikomatsakis Don't hold the predecessor cache lock longer than necessary rust-lang#71044 returns a `LockGuard` with the predecessor cache to callers of `Body::predecessors`. As a result, the lock around the predecessor cache could be held for an arbitrarily long time. This PR uses reference counting for ownership of the predecessor cache, meaning the lock is only ever held within `PredecessorCache::compute`. Checking this API for potential sources of deadlock is much easier now, since we no longer have to consider its consumers, only its internals. This required removing `predecessors_for`, since there is no equivalent to `LockGuard::map` for `Arc` and `Rc`. I believe this could be emulated with `owning_ref::{Arc,Rc}Ref`, but I don't think it's necessary. Also, we continue to return an opaque type from `Body::predecessors` with the lifetime of the `Body`, not `'static`. This depends on rust-lang#71044. Only the last two commits are new. r? @nikomatsakis
Add regression test for rust-lang#26376 Closes rust-lang#26376
Replace thread_local with generator resume arguments in box_region. Fixes rust-lang#68922. Continuation of rust-lang#70622. Added a short doc, hope it makes sense. r? @jonas-schievink
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@bors r+ rollup=never p=5 |
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📌 Commit f70c9db has been approved by |
bors
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☀️ Test successful - checks-azure |
This was referenced Apr 26, 2020
This was referenced Apr 27, 2020
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Successful merges:
DefKinds. #70043 (Add all remainingDefKinds.)Failed merges:
r? @ghost