Allow inference regions when relating consts
As first noticed by @eddyb, `super_relate_consts` doesn't need to check for inference vars since `eval` does it already (and handles lifetimes correctly by erasing them).
Fixes#73050
r? @oli-obk
expand: More precise locations for expansion-time lints
First commit: a macro expansion doesn't have a `NodeId` associated with it, but it has a parent `DefId` which we can use for linting.
The observable effect is that lints associated with macro expansions can now be `allow`ed at finer-grained level than whole crate.
Second commit: each macro definition has a `NodeId` which we can use for linting, unless that macro definition was decoded from other crate.
Enable AVR as a Tier 3 target upstream
Tracking issue: #44052.
Things intentionally left out of the initial upstream:
* The `target_cpu` flag
I have made the cleanup suggestions by @jplatte and @jplatte in 043550d9db.
Anybody feel free to give the branch a test and see how it fares, or make suggestions on the code patch itself.
Add comment about LocalDefId -> DefId
Now there are instructions on how to convert back and forth on both
structs, not just one.
See also https://github.com/rust-lang/rust/pull/73076
r? @lcnr
Add various Zulip notifications for prioritization
Adapts `triagebot.toml` for rust-lang/triagebot#616 and adds various Zulip notifications for the Prioritization WG workflow.
We should also add indications about the procedure for handling those events, cc @rust-lang/wg-prioritization.
r? @spastorino
This should be merged as soon as possible after rust-lang/triagebot#616 is merged, cc @Mark-Simulacrum
Provide suggestion to convert numeric op LHS rather than unwrapping RHS
Given a code
```rust
fn foo(x: u8, y: u32) -> bool {
x > y
}
fn main() {}
```
it could be more helpful to provide a suggestion to do "u32::from(x)"
rather than "y.try_into().unwrap()", since the latter may panic.
We do this by passing the LHS of a binary expression up the stack into
the coercion checker.
Closes#73145
std: Enable atomic.fence emission on wasm32
This commit removes the `#[cfg]` guards in `atomic::fence` on wasm
targets. Since these guards were originally added the upstream wasm
specification for threads gained an `atomic.fence` instruction, so LLVM
no longer panics on these intrinsics.
Although there aren't a ton of tests in-repo for this right now I've
tested locally and all of these fences generate `atomic.fence`
instructions in wasm.
Closes#65687Closes#72997
Fix #[thread_local] statics as asm! sym operands
The `asm!` RFC specifies that `#[thread_local]` statics may be used as `sym` operands for inline assembly.
This also fixes a regression in the handling of `#[thread_local]` during monomorphization which caused link-time errors with multiple codegen units, most likely introduced by #71192.
r? @oli-obk
Rollup of 7 pull requests
Successful merges:
- #72180 (remove extra space from crate-level doctest names)
- #73012 (Show `SyntaxContext` in formatted `Span` debug output)
- #73097 (Try_run must only be used if toolstate is populated)
- #73169 (Handle assembler warnings properly)
- #73182 (Track span of function in method calls, and use this in #[track_caller])
- #73207 (Clean up E0648 explanation)
- #73230 (Suggest including unused asm arguments in a comment to avoid error)
Failed merges:
r? @ghost
Minor refactoring
Minor refactoring
Update src/librustc_error_codes/error_codes/E0724.md
Co-authored-by: David Wood <Q0KPU0H1YOEPHRY1R2SN5B5RL@david.davidtw.co>
Update src/librustc_error_codes/error_codes/E0724.md
Co-authored-by: David Wood <Q0KPU0H1YOEPHRY1R2SN5B5RL@david.davidtw.co>
Update src/librustc_error_codes/error_codes/E0724.md
Co-authored-by: David Wood <Q0KPU0H1YOEPHRY1R2SN5B5RL@david.davidtw.co>
Minor refactoring
Suggest including unused asm arguments in a comment to avoid error
We require all arguments to an `asm!` to be used in the template string, just like format strings. However in some cases (e.g. `black_box`) it may be desirable to have `asm!` arguments that are not used in the template string.
Currently this is a hard error rather than a lint since `#[allow]` does not work on macros (#63221), so this PR suggests using the unused arguments in an asm comment as a workaround.
r? @petrochenkov
Track span of function in method calls, and use this in #[track_caller]
Fixes#69977
When we parse a chain of method calls like `foo.a().b().c()`, each
`MethodCallExpr` gets assigned a span that starts at the beginning of
the call chain (`foo`). While this is useful for diagnostics, it means
that `Location::caller` will return the same location for every call
in a call chain.
This PR makes us separately record the span of the function name and
arguments for a method call (e.g. `b()` in `foo.a().b().c()`). This
`Span` is passed through HIR lowering and MIR building to
`TerminatorKind::Call`, where it is used in preference to
`Terminator.source_info.span` when determining `Location::caller`.
This new span is also useful for diagnostics where we want to emphasize
a particular method call - for an example, see
https://github.com/rust-lang/rust/pull/72389#discussion_r436035990
Handle assembler warnings properly
Previously all inline asm diagnostics were treated as errors, but LLVM sometimes emits warnings and notes as well.
Fixes#73160
r? @petrochenkov
Try_run must only be used if toolstate is populated
Clippy's tests were failing the build, but that failure was ignored in favor of checking toolstate. This is the correct behavior for toolstate-checked tools, but Clippy no longer updates its toolstate status as it should always build.
The previous PR of this kind didn't catch this as I expected x.py failures to always lead to a non-successful build in CI, but that's not the case specifically for tool testing.
Show `SyntaxContext` in formatted `Span` debug output
This is only really useful in debug messages, so I've switched to
calling `span_to_string` in any place that causes a `Span` to end up in
user-visible output.
remove extra space from crate-level doctest names
Before:
```
running 2 tests
test src/test/rustdoc-ui/doctest-output.rs - foo::bar (line 11) ... ok
test src/test/rustdoc-ui/doctest-output.rs - (line 5) ... ok
test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
```
After:
```
running 2 tests
test src/test/rustdoc-ui/doctest-output.rs - foo::bar (line 11) ... ok
test src/test/rustdoc-ui/doctest-output.rs - (line 5) ... ok
test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
```
Given a code
```rust
fn foo(x: u8, y: u32) -> bool {
x > y
}
fn main() {}
```
it could be more helpful to provide a suggestion to do "u32::from(x)"
rather than "y.try_into().unwrap()", since the latter may panic.
We do this by passing the LHS of a binary expression up the stack into
the coercion checker.
Closes#73145
Support proc macros in intra doc link resolution
The feature was written pre-proc macro resolution, so it only supported the wacky MBE resolution rules. This adds support for proc macros as well.
cc @GuillaumeGomez
Fixes#73173
Ensure stack when building MIR for matches
In particular matching on complex types such as strings will cause
deep recursion to happen.
Fixes#72933
r? @matthewjasper @oli-obk
Fix `is_const_context`, update `check_for_cast`
A better version of #71477
Adds `fn enclosing_body_owner` and uses it in `is_const_context`.
`is_const_context` now uses the same mechanism as `mir_const_qualif` as it was previously incorrect.
Renames `is_const_context` to `is_inside_const_context`.
I also updated `check_for_cast` in the second commit, so r? @estebank
(I removed one lvl of indentation, so it might be easier to review by hiding whitespace changes)
Relate existential associated types with variance Invariant
Fixes#71550#72315
r? @nikomatsakis
The test case reported in that issue now errors with the following message ...
```
error[E0495]: cannot infer an appropriate lifetime for lifetime parameter 'a in function call due to conflicting requirements
--> /tmp/test.rs:25:5
|
25 | bad(&Bar(PhantomData), x)
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: first, the lifetime cannot outlive the lifetime `'a` as defined on the function body at 24:11...
--> /tmp/test.rs:24:11
|
24 | fn extend<'a, T>(x: &'a T) -> &'static T {
| ^^
note: ...so that reference does not outlive borrowed content
--> /tmp/test.rs:25:28
|
25 | bad(&Bar(PhantomData), x)
| ^
= note: but, the lifetime must be valid for the static lifetime...
note: ...so that the types are compatible
--> /tmp/test.rs:25:9
|
25 | bad(&Bar(PhantomData), x)
| ^^^^^^^^^^^^^^^^^
= note: expected `&'static T`
found `&T`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0495`.
```
I could also add that test case if we want to have a weaponized one too.
