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Check fat pointer metadata compatibility modulo regions
Regions don't really mean anything anyways during hir typeck.
If this `erase_regions` makes anyone nervous, it's probably equally valid to just equate the types using a type relation, but regardless we should _not_ be using strict type equality while region variables are present.
Fixes #103384
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Minimal implementation of implicit deref patterns for Strings
cc `@compiler-errors` `@BoxyUwU` https://github.com/rust-lang/lang-team/issues/88 #87121
~~I forgot to add a feature gate, will do so in a minute~~ Done
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Rollup of 6 pull requests
Successful merges:
- #103901 (Add tracking issue for `const_arguments_as_str`)
- #104112 (rustdoc: Add copy to the description of repeat)
- #104435 (`VecDeque::resize` should re-use the buffer in the passed-in element)
- #104467 (Fix substraction with overflow in `wrong_number_of_generic_args.rs`)
- #104608 (Cleanup macro matching recovery)
- #104626 (Fix doctest errors related to rustc_middle)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix doctest errors related to rustc_middle
Helps with https://github.com/rust-lang/rust/issues/99144
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Cleanup macro matching recovery
The retry has been implemented already in #104335. Also removes a `HACK` comment that's not really needed anymore because the "don't recover during macro matching" isn't really a hack but correct behavior.
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fuzzypixelz:fix/attempt-to-substract-with-overflow, r=compiler-errors
Fix substraction with overflow in `wrong_number_of_generic_args.rs`
Fixes #104287
This issue happens in the `suggest_moving_args_from_assoc_fn_to_trait_for_qualified_path` function, which seems to run before the error checking facilities can catch an invalid use of generic arguments. Thus we get a subtraction with overflow because the code implicitly assumes that the source program makes sense (or is this assumption not true even if the program is correct?).
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try_normalize_after_erasing_regions: promote an assertion to always run
In https://github.com/rust-lang/miri/issues/2433 this assertion has been seen to trigger, so it might be worth actually checking this? Regressing debug assertions are very easy to miss until much later, and then they become quite hard to debug.
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r=oli-obk
Constify `is_aligned` via `align_offset`
Alternative to https://github.com/rust-lang/rust/pull/102753
Make `align_offset` work in const eval (and not always return `usize::MAX`) and then use that to constify `is_aligned{_to}`.
Tracking Issue: https://github.com/rust-lang/rust/issues/104203
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Rarranging the substration and equality check into an addition and an equality
check is sufficient.
Algebra is cool, isn't it?
Co-authored-by: Michael Goulet <michael@errs.io>
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The retry has been implemented already.
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This reverts commit f3a577bfae376c0222e934911865ed14cddd1539.
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r=fee1-dead
Improve spans for RPITIT object-safety errors
No reason why we can't point at the `impl Trait` that causes the object-safety violation.
Also [drive-by: Add is_async fn to hir::IsAsync](https://github.com/rust-lang/rust/pull/104593/commits/c4165f3a965e258531928180195637455299c6f3), which touches clippy too.
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detect () to avoid redundant <> suggestion for type
fix #104379
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Make "long type" printing type aware and trim types in E0275
Instead of simple string cutting, use a custom printer to hide parts of long printed types.
On E0275, check for type length before printing.
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Use `IsTerminal` in place of `atty`
In any crate that can use nightly features, use `IsTerminal` rather than
`atty`:
- Use `IsTerminal` in `rustc_errors`
- Use `IsTerminal` in `rustc_driver`
- Use `IsTerminal` in `rustc_log`
- Use `IsTerminal` in `librustdoc`
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Revert "Normalize opaques with escaping bound vars"
This caused a perf regression in #103423, cc `@skyzh` this should fix #103423.
reverts #100980
r? `@oli-obk`
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r=compiler-errors
diagnostics: only show one suggestion for method -> assoc fn
Fixes #102354
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couple of clippy::perf fixes
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Use `ErrorGuaranteed::unchecked_claim_error_was_emitted` less
there are only like 3 or 4 call sites left after this but it wasnt obvious to me how to remove them
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nll: correctly deal with bivariance
fixes #104409
when in a bivariant context, relating stuff should always trivially succeed. Also changes the mir validator to correctly deal with higher ranked regions.
r? types cc ``@RalfJung``
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Improve generating Custom entry function
This commit is aimed at making compiler-generated entry functions (Basically just C `main` right now) more generic so other targets can do similar things for custom entry. This was initially implemented as part of https://github.com/rust-lang/rust/pull/100316.
Currently, this moves the entry function name and Call convention to the target spec.
Signed-off-by: Ayush Singh <ayushsingh1325@gmail.com>
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Use liballoc's specialised in-place vec collection
liballoc already specialises in-place vector collection, so manually
reimplementing it in `IdFunctor::try_map_id` was superfluous.
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Rollup of 8 pull requests
Successful merges:
- #102977 (remove HRTB from `[T]::is_sorted_by{,_key}`)
- #103378 (Fix mod_inv termination for the last iteration)
- #103456 (`unchecked_{shl|shr}` should use `u32` as the RHS)
- #103701 (Simplify some pointer method implementations)
- #104047 (Diagnostics `icu4x` based list formatting.)
- #104338 (Enforce that `dyn*` coercions are actually pointer-sized)
- #104498 (Edit docs for `rustc_errors::Handler::stash_diagnostic`)
- #104556 (rustdoc: use `code-header` class to format enum variants)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Edit docs for `rustc_errors::Handler::stash_diagnostic`
Clarify that the diagnostic can be retrieved with `steal_diagnostic`.
r? ```@compiler-errors```
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Enforce that `dyn*` coercions are actually pointer-sized
Implement a perma-unstable, rudimentary `PointerSized` trait to enforce `dyn*` casts are `usize`-sized for now, at least to prevent ICEs and weird codegen issues from cropping up after monomorphization since currently we enforce *nothing*.
This probably can/should be removed in favor of a more sophisticated trait for handling `dyn*` conversions when we decide on one, but I just want to get something up for discussion and experimentation for now.
r? ```@eholk``` cc ```@tmandry``` (though feel free to claim/reassign)
Fixes #102141
Fixes #102173
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Rollup of 8 pull requests
Successful merges:
- #101162 (Migrate rustc_resolve to use SessionDiagnostic, part # 1)
- #103386 (Don't allow `CoerceUnsized` into `dyn*` (except for trait upcasting))
- #103405 (Detect incorrect chaining of if and if let conditions and recover)
- #103594 (Fix non-associativity of `Instant` math on `aarch64-apple-darwin` targets)
- #104006 (Add variant_name function to `LangItem`)
- #104494 (Migrate GUI test to use functions)
- #104516 (rustdoc: clean up sidebar width CSS)
- #104550 (fix a typo)
Failed merges:
- #104554 (Use `ErrorGuaranteed::unchecked_claim_error_was_emitted` less)
r? `@ghost`
`@rustbot` modify labels: rollup
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This reverts commit 43119d643857efc366bfca527ac2dadfc3f2e906.
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Fixes #102354
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Shrink `ast::Expr` harder
r? `@ghost`
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`_` might confuse people into believing that the type isn't known,
while `...` is not used anywhere else for types and is not valid
syntax, making it more likely to convey the right understanding.
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