Drop petgraph dependency from bootstrap
It was essentially unused, likely leftover from a previous refactoring iteration. This should hopefully help reduce bootstrap build times a little, dropping petgraph, fixedbitset, and ordermap from the dependency set.
r? @alexcrichton
Remove rustc-dev from the default nightly components
It was already filtered from other branches, but we only kept it in
nightly's default to ease the transition. Now that the separation of
rust-std/rustc-dev has reached the 1.40 release, it seems like a good
time for that transition to end.
Closes#67425.
r? @Mark-Simulacrum
Make GATs less ICE-prone.
After this PR simple lifetime-generic associated types can now be used in a compiling program. There are two big limitations:
* #30472 has not been addressed in any way (see src/test/ui/generic-associated-types/iterable.rs)
* Using type- and const-generic associated types errors because bound types and constants aren't handled by trait solving.
* The errors are technically non-fatal, but they happen in a [part of the compiler](4abb0ad273/src/librustc_typeck/lib.rs (L298)) that fairly aggressively stops compiling on errors.
closes#47206closes#49362closes#62521closes#63300closes#64755closes#67089
Test slice patterns more
Adds tests for const evaluation and some more borrow checking tests.
Fixes some bugs in const eval for subslice patterns.
closes#66934
r? @oli-obk
cc @Centril
Make ptr::slice_from_raw_parts a const fn available under a feature flag
A first step in the direction of https://github.com/rust-lang/rust/issues/67456 .
This makes `ptr::slice_from_raw_parts` and `ptr::slice_from_raw_parts_mut` available as a const fn under a feature flag.
Enable opting out of specific default LLVM arguments.
`rustc` by default adds a few arguments to LLVM (like `-mergefunc-use-aliases` for example). With this PR `rustc` will only emit these arguments if the same argument has not already been specified by the user via `-Cllvm-args`. This enables opting out of these defaults.
The PR also removes a PGO specific `-Z` flag the effect of which can also be easily achieved by `-Cllvm-args`.
Fixes https://github.com/rust-lang/rust/issues/64310.
Fix too restrictive checks on Drop impls
Fixes#34426. Fixes#58311.
This PR completes and extends #59497 (which has been inactive for a while now).
The problem generating both issues was that when checking that the `Predicate`s of the `Drop` impl are exactly the same as the ones of the struct definition, the check was essentially performed by a simple `==` operator, which was not handling correctly HRTBs and involved `Fn` types.
The implemented solution relies on the `relate` machinery to more correctly equate `Predicate`s, and on `anonymize_late_bound_regions` to handle HRTB in a more general way. As the `Relate` trait currently is implemented only for `TraitPredicate` and `ProjectionPredicate` (and as they were the ones generating problems), `relate` is used only for them while for other `Predicate`s the equality check is kept. I'm currently considering whether it would make sense to implement the `Relate` trait also for all other `Predicate`s to render the proposed solution more general.
* Make some run-pass or check-pass
* Use `#![allow(incomplete_features)]`
* Update FIXMEs now that some of the issues have been addressed
* Add regression tests
refactor expr & stmt parsing + improve recovery
Summary of important changes (best read commit-by-commit, ignoring whitespace changes):
- `AttrVec` is introduces as an alias for `ThinVec<Attribute>`
- `parse_expr_bottom` and `parse_stmt` are thoroughly refactored.
- Extract diagnostics logic for `vec![...]` in a pattern context.
- Recovery is added for `do catch { ... }`
- Recovery is added for `'label: non_block_expr`
- Recovery is added for `var $local`, `auto $local`, and `mut $local`. Fixes#65257.
- Recovery is added for `e1 and e2` and `e1 or e2`.
- ~~`macro_legacy_warnings` is turned into an error (has been a warning for 3 years!)~~
- Fixes#63396 by forward-porting #64105 which now works thanks to added recovery.
- `ui-fulldeps/ast_stmt_expr_attr.rs` is turned into UI and pretty tests.
- Recovery is fixed for `#[attr] if expr {}`
r? @estebank
Rollup of 6 pull requests
Successful merges:
- #67130 (Const prop should finish propagation into user defined variables)
- #67163 (Split up ptr/mod.rs in libcore...)
- #67314 (Don't suppress move errors for union fields)
- #67392 (Fix unresolved type span inside async object)
- #67404 (Separate region inference logic from error handling better)
- #67428 (`is_binding_pat`: use explicit match & include or-pats in grammar)
Failed merges:
r? @ghost
It was already filtered from other branches, but we only kept it in
nightly's default to ease the transition. Now that the separation of
rust-std/rustc-dev has reached the 1.40 release, it seems like a good
time for that transition to end.
