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Rollup of 9 pull requests
Successful merges:
- #94464 (Suggest adding a new lifetime parameter when two elided lifetimes should match up for traits and impls.)
- #94476 (7 - Make more use of `let_chains`)
- #94478 (Fix panic when handling intra doc links generated from macro)
- #94482 (compiler: fix some typos)
- #94490 (Update books)
- #94496 (tests: accept llvm intrinsic in align-checking test)
- #94498 (9 - Make more use of `let_chains`)
- #94503 (Provide C FFI types via core::ffi, not just in std)
- #94513 (update Miri)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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tests: accept llvm intrinsic in align-checking test
This changed in upstream change https://reviews.llvm.org/D98152 (aka
https://github.com/llvm/llvm-project/commit/a266af721153fab6452094207b09ed265ab0be7b)
wherein LLVM got smarter about using intrinsics. As best I can tell the
change I've made here preserves the intent of the test on LLVM 14 and
before while also passing on LLVM 15 and later.
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r=notriddle
Fix panic when handling intra doc links generated from macro
Fixes #78591.
Fixes #92789.
r? ``@notriddle``
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r=estebank
Suggest adding a new lifetime parameter when two elided lifetimes should match up for traits and impls.
Suggest adding a new lifetime parameter when two elided lifetimes should match up for functions in traits and impls.
Issue #94462
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r=estebank
Direct users towards using Rust target feature names in CLI
This PR consists of a couple of changes on how we handle target features.
In particular there is a bug-fix wherein we avoid passing through features that aren't prefixed by `+` or `-` to LLVM. These appear to be causing LLVM to assert, which is pretty poor a behaviour (and also makes it pretty clear we expect feature names to be prefixed).
The other commit, I anticipate to be somewhat more controversial is outputting a warning when users specify a LLVM-specific, or otherwise unknown, feature name on the CLI. In those situations we request users to either replace it with a known Rust feature name (e.g. `bmi` -> `bmi1`) or file a feature request. I've a couple motivations for this: first of all, if users are specifying these features on the command line, I'm pretty confident there is also a need for these features to be usable via `#[cfg(target_feature)]` machinery. And second, we're growing a fair number of backends recently and having ability to provide some sort of unified-ish interface in this place seems pretty useful to me.
Sponsored by: standard.ai
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This changed in upstream change https://reviews.llvm.org/D98152 (aka
https://github.com/llvm/llvm-project/commit/a266af721153fab6452094207b09ed265ab0be7b)
wherein LLVM got smarter about using intrinsics. As best I can tell the
change I've made here preserves the intent of the test on LLVM 14 and
before while also passing on LLVM 15 and later.
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Rollup of 3 pull requests
Successful merges:
- #94359 (Fix inconsistent symbol mangling of integers constants with -Zverbose)
- #94465 (6 - Make more use of `let_chains`)
- #94470 (:arrow_up: rust-analyzer)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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from a macro
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Fix inconsistent symbol mangling of integers constants with -Zverbose
The `PrettyPrinter` changes formatting of array size and integer
constants based on `-Zverbose`, so its implementation cannot be used in
legacy symbol mangling.
Example symbol demangling before changes:
```console
$ cat a.rs
pub struct A<T>(T);
impl A<[u8; 128]> { pub fn f() {} }
$ rustc --crate-type=lib a.rs -Zverbose=n && nm -C ./liba.rlib
00000000 T a::A<[u8; 128]>::f
$ rustc --crate-type=lib a.rs -Zverbose=y && nm -C ./liba.rlib
00000000 T a::A<[u8; Const { ty. usize, val. Value(Scalar(0x0000000000000080)) }]>::f
```
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Revert "Auto merge of #92419 - erikdesjardins:coldland, r=nagisa"
Should fix (untested) #94390
Reopens #46515, #87055
r? `@ehuss`
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Rollup of 3 pull requests
Successful merges:
- #94438 (Check method input expressions once)
- #94459 (Update cargo)
- #94470 (:arrow_up: rust-analyzer)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Check method input expressions once
If the user mistakenly forgets to wrap their method args in a tuple, then the compiler tries to check that types within the tuple match the expression args. This means we call `check_expr` once within this diagnostic code, so when we check the expr once again in `demand_compatible`, we attempt to apply expr adjustments twice, leading to ICEs.
This PR attempts to fix this by skipping the expression type check in `demand_compatible` if we have detected an method arg mismatch at all.
This does lead to a single UI test regressing slightly, due to a diagnostic disappearing, though I don't know if it is generally meaningful to even raise an type error after noting that the argument count is incorrect in a function call, since the user might be providing (in-context) meaningless expressions to the wrong method.
I can adjust this to be a bit more targeted (to just skip checking exprs in `demand_compatible` in the tuple case) if this UI test regression is a problem.
fixes #94334
cc #94291
Also drive-by fixup of `.node_type(expr.hir_id)` to `.expr_ty(expr)`, since that method exists.
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Lint against more useless `#[must_use]` attributes
This expands the existing `#[must_use]` check in `unused_attributes` to lint against pretty much everything `#[must_use]` doesn't support.
Fixes #93906.
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r=estebank
Generalize "remove `&`" and "add `*`" suggestions to more than one deref
Suggest removing more than one `&` and `&mut`, along with suggesting adding more than one `*` (or a combination of the two).
r? `@estebank`
(since you're experienced with these types of suggestions, feel free to reassign)
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At the very least this serves to deduplicate the diagnostics that are
output about unknown target features provided via CLI.
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If they are trying to use features rustc doesn't yet know about,
request a feature request.
Additionally, also warn against using feature names without leading `+`
or `-` signs.
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Caching the stable hash of Ty within itself
Instead of computing stable hashes on types as needed, we compute it during interning.
This way we can, when a hash is requested, just hash that hash, which is significantly faster than traversing the type itself.
We only do this for incremental for now, as incremental is the only frequent user of stable hashing.
As a next step we can try out
* moving the hash and TypeFlags to Interner, so projections and regions get the same benefit (tho regions are not nested, so maybe that's not a good idea? Would be nice for dedup tho)
* start comparing types via their stable hash instead of their address?
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match up for traits and impls.
Issue #94462
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The `PrettyPrinter` changes formatting of array size and integer
constants based on `-Zverbose`, so its implementation cannot be used in
legacy symbol mangling.
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Add long explanation for E0726
This is the cleaned up version of #87655 with the missing fixes.
Part of https://github.com/rust-lang/rust/issues/61137.
r? `@Urgau`
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Fix ICE when using Box<T, A> with large A
A sequel to #94043 that fixes #81270 and #92054 (duplicate).
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r=petrochenkov
Fix ICE when passing block to while-loop condition
We were incorrectly delaying a bug when we passed _any_ block (that evaluated to `()`) to a while loop. This PR makes the check a bit more sophisticated.
We should only suppress the error here in cases that are equivalent to those we find in #93574 (i.e. only while loop conditions that have destructuring assignment expressions in them).
Fixes #93997
cc `@estebank` who added this code
I would not be opposed to removing the delay-bug altogether, and just emitting this error always. I much prefer duplicate errors over no errors.
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* Recover from invalid `'label: ` before block.
* Make suggestion to enclose statements in a block multipart.
* Point at `match`, `while`, `loop` and `unsafe` keywords when failing
to parse their expression.
* Do not suggest `{ ; }`.
* Do not suggest `|` when very unlikely to be what was wanted (in `let`
statements).
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Rollup of 5 pull requests
Successful merges:
- #89793 (Add `slice::{from_ptr_range, from_mut_ptr_range} `)
- #92642 (Update search location from a relative path to absolute)
- #93389 (regression for issue 90847)
- #93413 (Fix broken link from rustdoc docs to ayu theme)
- #94365 (Fix MinGW target detection in raw-dylib)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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regression for issue 90847
Adds a regression test for issue #90847
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more complete sparc64 ABI fix for aggregates with floating point members
Previous fix didn't handle nested structures at all.
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Only create a single expansion for each inline integration.
The inlining integrator used to create one expansion for each span from the callee body.
This PR reverses the logic to create a single expansion for the whole call,
which is more consistent with how macro expansions work for macros.
This should remove the large memory regression in #91743.
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Apply noundef metadata to loads of types that do not permit raw init
This matches the noundef attributes we apply on arguments/return types.
Fixes (partially) #74378.
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This reverts commit 4f49627c6fe2a32d1fed6310466bb0e1c535c0c0, reversing
changes made to 028c6f1454787c068ff5117e9000a1de4fd98374.
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Rollup of 7 pull requests
Successful merges:
- #94396 (1 - Make more use of `let_chains`)
- #94397 (Document that pre-expansion lint passes are softly deprecated)
- #94399 (Add test for #79465 to prevent regression)
- #94409 (avoid rebuilding bootstrap when PATH changes)
- #94415 (Use the first codegen backend in the config.toml as default)
- #94417 (Fix duplicated impl links)
- #94420 (3 - Make more use of `let_chains`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Apply noundef attribute to all scalar types which do not permit raw init
Beyond `&`/`&mut`/`Box`, this covers `char`, enum discriminants, `NonZero*`, etc.
All such types currently cause a Miri error if left uninitialized,
and an `invalid_value` lint in cases like `mem::uninitialized::<char>()`.
Note that this _does not_ change whether or not it is UB for `u64` (or
other integer types with no invalid values) to be undef.
Fixes (partially) #74378.
r? `@ghost` (blocked on #94127)
`@rustbot` label S-blocked
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Fix duplicated impl links
Fixes #78701.
The problem is that the blanket impl has the same ID as the other impl, except that we don't derive IDs when we generate the sidebar. We now do.
r? ``@notriddle``
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Add test for #79465 to prevent regression
Fixes #79465.
Like this we will be able to close the issue.
r? ````@matthiaskrgr````
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LLVM really dislikes this and will assert, saying something along the
lines of:
```
rustc: llvm/lib/MC/MCSubtargetInfo.cpp:60: void ApplyFeatureFlag(
llvm::FeatureBitset&, llvm::StringRef, llvm::ArrayRef<llvm::SubtargetFeatureKV>
): Assertion
`SubtargetFeatures::hasFlag(Feature) && "Feature flags should start with '+' or '-'"`
failed.
```
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For MIRI, cfg out the swap vectorization logic from 94212
Because of #69488 the swap logic from #94212 doesn't currently work in MIRI.
Copying in smaller pieces is probably much worse for its performance anyway, so it'd probably rather just use the simple path regardless.
Part of #94371, though another PR will be needed for the CTFE aspect.
r? `@oli-obk`
cc `@RalfJung`
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This matches the noundef attributes we apply on arguments/return types.
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This expands the existing `#[must_use]` check in `unused_attributes`
to lint against pretty much everything `#[must_use]` doesn't support.
Fixes #93906.
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