A fix for 51821
This dedupe the vec of `OutlivesConstraint` using a `FxHashSet<(RegionVid, RegionVid)>` it alsow adds a `struct ConstraintSet` to encapsulate/ensure this behavere.
Always check type_dependent_defs
Directly indexing into `type_dependent_defs` has caused multiple ICEs in the past (https://github.com/rust-lang/rust/issues/46771, https://github.com/rust-lang/rust/issues/49241, etc.) and is almost certainly responsible for #51798 too. This PR ensures we always check `type_dependent_defs` first, which should prevent any more of these (or at least make them easier to track down).
Avoid needless allocations in `liveness_of_locals`.
We don't need to replace the heap-allocated bitset, we can just
overwrite its contents.
This speeds up most NLL benchmarks, the best by 1.5%.
r? @nikomatsakis
Previously Cargo would hardlink all the dependencies into the "root" as
foo.dll and the `toplevel` array would get populated with these, but
that's no longer the case. Instead, cargo will only do this for the
final artifacts/final libraries.
Rustbuild is updated to continue looping through the artifacts mentioned
instead of early-returning. This should fix the bug.
@alexcrichton found the cause of this and suggested this fix.
Do not allow LLVM to increase a TLS's alignment on macOS.
This addresses the various TLS segfault on macOS 10.10.
Fix#51794.
Fix#51758.
Fix#50867.
Fix#48866.
Fix#46355.
Fix#44056.
Implement PartialEq between &str and OsString
This fixes#49854.
It allows equality comparison between `OsString` values and `str` references, such as `os_string == "something"`.
Make the public API of the alloc crate a subset of std
This only affects **unstable** APIs.
I plan to submit an RFC proposing to stabilize the crate. The reason it isn’t stable yet (https://github.com/rust-lang/rust/issues/27783) is in case we end up merging the standard library crates into one. However the `core` crate is already stable, so if that happens we’ll need to keep it working somehow (likely by making replacing its contents by `pub use` items). We can do the same for `alloc`. This PR will hopefully make this easier, but even if that doesn’t happen consistency with `std` seems good.
[NLL] Better move errors
Make a number of changes to improve the quality of NLL cannot move errors.
* Group errors that occur in the same `match` with the same cause.
* Suggest `ref`, `&` or removing `*` to avoid the move.
* Show the place being matched on.
Differences from AST borrowck:
* `&` is suggested over `ref` when matching on a place that can't be moved from.
* Removing `*` is suggested instead of adding `&` when applicable.
* Sub-pattern spans aren't used, this would probably need Spans on Places.
Closes#45699Closes#46627Closes#51187Closes#51189
r? @pnkfelix
