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bump bootstrap compiler to 1.90 beta
There were significantly less `cfg(bootstrap)` and `cfg(not(bootstrap))` this release. Presumably due to the fact that we change the bootstrap stage orderings to reduce the need for them and it was successful :pray:
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Reimplement `print_region` in `type_name.rs`.
Broken by rust-lang/rust#144776; this is reachable after all.
Fixes rust-lang/rust#144994.
The commit also adds a lot more cases to the `type-name-basic.rs`, because it's currently very anaemic. This includes some cases where region omission does very badly; these are marked with FIXME.
r? `@fmease`
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Stabilize `strict_overflow_ops`
Closes rust-lang/rust#118260
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r=petrochenkov
Allow `cargo fix` to partially apply `mismatched_lifetime_syntaxes`
Workaround for https://github.com/rust-lang/rust/issues/144588#issuecomment-3128445308
Not all suggestions have to be hidden from `cargo fix`, only redundant ones. The redundant ones are already hidden from the user, so the same `tool_only` flag can be used to hide them from `cargo fix`. This way `cargo fix` will be able to correctly apply the fixes, and will apply only the fix that the compiler visibly suggests to the user.
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Introduce ModernIdent type to unify macro 2.0 hygiene handling
This pr introduce ModernIdent type to unify macro 2.0 hygiene handling
1. Added ModernIdent type. Wraps Ident and automatically calls `normalize_to_macros_2_0()`
2. Unified identifier normalization. Replaced scattered ident.normalize_to_macros_2_0() calls with ModernIdent::new(ident)
r? ````@petrochenkov````
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r=petrochenkov
Upgrade semicolon_in_expressions_from_macros from warn to deny
This is already warn-by-default, and a future compatibility warning (FCW) that warns in dependencies. Upgrade it to deny-by-default, as the next step towards hard error.
Per https://github.com/rust-lang/rust/issues/79813#issuecomment-3109105631
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Mark all deprecation lints in name resolution as deny-by-default and report-in-deps
This affects the next lints:
- `MACRO_EXPANDED_MACRO_EXPORTS_ACCESSED_BY_ABSOLUTE_PATHS` - https://github.com/rust-lang/rust/issues/144408
- `LEGACY_DERIVE_HELPERS` - https://github.com/rust-lang/rust/issues/79202
- `PRIVATE_MACRO_USE` - https://github.com/rust-lang/rust/issues/120192
- `OUT_OF_SCOPE_MACRO_CALLS` - https://github.com/rust-lang/rust/issues/144406
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Port `#[should_panic]` to the new attribute parsing infrastructure
Ports `#[should_panic]` to the new attribute parsing infrastructure for https://github.com/rust-lang/rust/issues/131229#issuecomment-2971351163
r? ```@jdonszelmann```
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r=Nadrieril,traviscross
lower pattern bindings in the order they're written and base drop order on primary bindings' order
To fix rust-lang/rust#142163, this PR does two things:
- Makes match arms base their drop order on the first sub-branch instead of the last sub-branch. Together with the second change, this makes bindings' drop order correspond to the relative order of when each binding first appears (i.e. the order of the "primary" bindings).
- Lowers pattern bindings in the order they're written (still treating the right-hand side of a ``@`` as coming before the binding on the left). In each sub-branch of a match arm, this is the order that would be obtained if the or-alternatives chosen in that sub-branch were inlined into the arm's pattern. This both affects drop order (making bindings in or-patterns not be dropped first) and fixes the issue in [this test](https://github.com/rust-lang/rust/blob/2a023bf80a6fbd6a06d5460a34eb247b986286ed/tests/ui/pattern/bindings-after-at/bind-by-copy-or-pat.rs) from rust-lang/rust#121716.
My approach to the second point is admittedly a bit trickier than may be necessary. To avoid passing around a counter when building `FlatPat`s, I've instead added just enough information to recover the original structure of the pattern's bindings from a `MatchTreeSubBranch`'s path through the `Candidate` tree. Some alternatives:
- We could use a counter, then sort bindings by their ordinals when making `MatchTreeSubBranch`es.
- I'd like to experiment with always merging sub-candidates and removing `test_remaining_match_pairs_after_or`; that would require lowering bindings and guards in a different way. That makes it a bigger change too, though, so I figure it might be simplest to start here.
- For a very big change, we could track which or-alternatives succeed at runtime to base drop order on the binding order in the particular alternatives matched.
This is a breaking change. It will need a crater run, language team sign-off, and likely updates to the Reference.
This will conflict with rust-lang/rust#143376 and probably also rust-lang/rust#143028, so they shouldn't be merged at the same time.
r? `@matthewjasper` or `@Nadrieril`
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emit `StorageLive` and schedule `StorageDead` for `let`-`else`'s bindings after matching
This PR removes special handling of `let`-`else`, so that `StorageLive`s are emitted and `StorageDead`s are scheduled only after pattern-matching has succeeded. This means `StorageDead`s will no longer appear for all of its bindings on the `else` branch (because they're not live yet) and its drops&`StorageDead`s will happen together like they do elsewhere, rather than having all drops first, then all `StorageDead`s.
This fixes rust-lang/rust#142056, and is therefore a breaking change. I believe it'll need a crater run and a T-lang nomination/fcp thereafter. Specifically, this makes drop-checking slightly more restrictive for `let`-`else` to match the behavior of other variable binding forms. An alternative approach could be to change the relative order of drops and `StorageDead`s for other binding forms to make drop-checking more permissive, but making that consistent would be a significantly more involved change.
r? mir
cc `````@dingxiangfei2009`````
`````@rustbot````` label +T-lang +needs-crater
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add nvptx_target_feature
Tracking issue: #141468 (nvptx), which is part of #44839 (catch-all arches)
The feature gate is `#![feature(nvptx_target_feature)]`
This exposes the target features `sm_20` through `sm_120a` [as defined](https://github.com/llvm/llvm-project/blob/llvmorg-20.1.1/llvm/lib/Target/NVPTX/NVPTX.td#L59-L85) by LLVM.
Cc: ``````@gonzalobg``````
``````@rustbot`````` label +O-NVPTX +A-target-feature
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Tweak auto trait errors
Make suggestions to remove params and super traits verbose and make spans more accurate.
```
error[E0567]: auto traits cannot have generic parameters
--> $DIR/auto-trait-validation.rs:6:19
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LL | auto trait Generic<T> {}
| -------^^^
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| auto trait cannot have generic parameters
error[E0568]: auto traits cannot have super traits or lifetime bounds
--> $DIR/auto-trait-validation.rs:8:20
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LL | auto trait Bound : Copy {}
| ----- ^^^^
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| auto traits cannot have super traits or lifetime bounds
```
```
error[E0380]: auto traits cannot have associated items
--> $DIR/issue-23080.rs:5:8
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LL | unsafe auto trait Trait {
| ----- auto traits cannot have associated items
LL | fn method(&self) {
| ^^^^^^
```
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Revert "Preserve the .debug_gdb_scripts section"
https://github.com/rust-lang/rust/pull/143679 introduces a significant build time perf regression for ripgrep. Let's revert it such that we can investigate it without pressure.
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Broken by #144776; this is reachable after all.
Fixes #144994.
The commit also adds a lot more cases to the `type-name-basic.rs`,
because it's currently very anaemic. This includes some cases where
region omission does very badly; these are marked with FIXME.
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Replace ad-hoc type path shortening logic for recursive mono instantiation errors to use `tcx.short_string()` instead.
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Signed-off-by: Jonathan Brouwer <jonathantbrouwer@gmail.com>
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mir: Do not modify NonUse in `super_projection_elem`
Split from rust-lang/rust#142771.
r? cjgillot
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r=cjgillot
simplifycfg: Mark as changed when start is modified in collapse goto chain
Split from rust-lang/rust#142771.
r? cjgillot
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Fortify generic param default checks
* Hard-reject instead of lint-reject type param defaults in generic assoc consts (GACs) (feature: `generic_const_items`).
* In https://github.com/rust-lang/rust/pull/113522, I explicitly handled the free const item case and forgot about the assoc const one.
* This led rustc to assume the default of emitting the deny-by-default lint `invalid_type_param_default`.
* GCIs are unstable, thus we're not bound by backward compat
* Hard-reject instead of lint-reject type param defaults in foreign items.
* We already hard-reject generic params on foreign items, so this isn't a breaking change.
* There's no reason why we need to lint-reject.
* Refactor the way we determine where generic param defaults are allowed:
* Don't default to emitting lint `invalid_type_param_defaults` for nodes that aren't explicitly handled but instead panic.
* This would've caught my GAC oversight from above much earlier via fuzzing
* Prevents us from accidentally stabilizing more invalid type param defaults in the future
* Streamline the phrasing of the diagnostic
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Gate const trait syntax
Missed this during my review of rust-lang/rust#143879, huge apologies!
Fixes [after beta backport] https://github.com/rust-lang/rust/issues/144958.
cc ``@fee1-dead``
r? ``@BoxyUwU`` or anyone
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we only merge candidates for trait and normalizes-to goals
so change `fn try_merge_responses` to `fn try_merge_candidates` and just use candidates everywhere.
Potentially slightly faster than the alternative :3
r? ``@compiler-errors`` ``@BoxyUwU``
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Enforce tail call type is related to body return type in borrowck
Like all call terminators, tail call terminators instantiate the binder of the callee signature with region variables and equate the arg operand types with that signature's args to ensure that the call is valid.
However, unlike normal call terminators, we were forgetting to also relate the return type of the call terminator to anything. In the case of tail call terminators, the correct thing is to relate it to the return type of the caller function (or in other words, the return local `_0`).
This meant that if the caller's return type had some lifetime constraint, then that constraint wouldn't flow through the signature and affect the args.
This is what's happening in the example test I committed:
```rust
fn link(x: &str) -> &'static str {
become passthrough(x);
}
fn passthrough<T>(t: T) -> T { t }
fn main() {
let x = String::from("hello, world");
let s = link(&x);
drop(x);
println!("{s}");
}
```
Specifically, the type `x` is `'?0 str`, where `'?0` is some *universal* arg. The type of `passthrough` is `fn(&'?1 str) -> &'?1 str`. Equating the args sets `'?0 = '?1`. However, we need to also equate the return type `&'?1 str` to `&'static str` so that we eventually require that `'?0 = 'static`, which is a borrowck error!
-----
Look at the first commit for the functional change, and the second commit is just a refactor because we don't need to pass `Option<BasicBlock>` to `check_call_dest`, but just whether or not the terminator is expected to be diverging (i.e. if the return type is `!`).
Fixes rust-lang/rust#144916
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Anonymize binders in tail call sig
See the comment for explanation
Fixes rust-lang/rust#144826
r? WaffleLapkin
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Port `#[coroutine]` to the new attribute system
Related to https://github.com/rust-lang/rust/issues/131229#issue-2565886367.
r? `````@jdonszelmann`````
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Parser: Recover from attributes applied to types and generic args
r? compiler
Add clearer error messages for invalid attribute usage in types or generic types
fixes rust-lang/rust#135017
fixes rust-lang/rust#144132
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This avoids scheduling drops and immediately unscheduling them. Drops
for guard bindings/temporaries are still scheduled and unscheduled as
before.
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This reverts commit 868bdde25b030e0b71a29a5dbc04a891036e702e.
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This reverts commit b4d923cea0509933b1fb859930cb20784251f9be.
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Rollup of 12 pull requests
Successful merges:
- rust-lang/rust#144552 (Rehome 33 `tests/ui/issues/` tests to other subdirectories under `tests/ui/`)
- rust-lang/rust#144676 (Add documentation for unstable_feature_bound)
- rust-lang/rust#144836 (Change visibility of Args new function)
- rust-lang/rust#144910 (Add regression tests for seemingly fixed issues)
- rust-lang/rust#144913 ([rustdoc] Fix wrong `i` tooltip icon)
- rust-lang/rust#144924 (compiletest: add hint for when a ui test produces no errors)
- rust-lang/rust#144926 (Correct the use of `must_use` on btree::IterMut)
- rust-lang/rust#144928 (Drop `rust-version` from `rustc_thread_pool`)
- rust-lang/rust#144945 (Autolabel PRs that change explicit tail call tests as `F-explicit_tail_calls`)
- rust-lang/rust#144954 (run-make: Allow blessing snapshot files that don't exist yet)
- rust-lang/rust#144971 (num: Rename `isolate_most_least_significant_one` functions)
- rust-lang/rust#144978 (Fix some doc links for intrinsics)
r? `@ghost`
`@rustbot` modify labels: rollup
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This restricts the uses of the unadjusted ABI to LLVM intrinsics. The
Rust ABI works fine for the thread-local shim as it always returns
pointers directly like the backend expects.
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Directly creating the ArgAttributes rather than adjusting one is a bit
clearer.
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Drop `rust-version` from `rustc_thread_pool`
The current `rust-version = "1.63"` was inherited from rayon, but it
doesn't make sense to limit this in the compiler workspace. Having any
setting at all has effects on tools like `cargo info` that try to infer
the MSRV when the workspace itself doesn't specify it. Since we are the
compiler, our only MSRV is whatever bootstrapping requires.
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Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
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r=bjorn3
Preserve the .debug_gdb_scripts section
Make sure that compiler and linker don't optimize the section's contents
away by adding the global holding the data to `llvm.used`. This
eliminates the need for a volatile load in the main shim; since the LLVM
codegen backend is the only implementer of the corresponding trait
function, remove it entirely.
Pretty printers in dylib dependencies are now emitted by the main crate
instead of the dylib; apart from matching how rlibs are handled, this
approach has the advantage that `omit_gdb_pretty_printer_section` keeps
working with dylib dependencies.
r? `@bjorn3`
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