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Use generic `NonZero` internally.
Tracking issue: https://github.com/rust-lang/rust/issues/120257
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Only point out non-diverging arms for match suggestions
Fixes #121144
There is no reason to point at diverging arms, which will always coerce to whatever is the match block's evaluated type.
This also removes the suggestion from #106601, since as I pointed out in https://github.com/rust-lang/rust/issues/72634#issuecomment-1946210898 the added suggestion is not firing in the right cases, but instead only when one of the match arms already *actually* evaluates to `()`.
r? estebank
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Fix closure kind docs
I didn't review this close enough lol -- the old code snippet didn't use substs correctly, and had a malformed `if let`
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Clean up potential_query_instability with FxIndexMap and UnordMap
From https://github.com/rust-lang/rust/pull/120485#issuecomment-1916437191
r? `@michaelwoerister`
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r=RalfJung,cjgillot
Store static initializers in metadata instead of the MIR of statics.
This means that adding generic statics would be even more difficult, as we can't evaluate statics from other crates anymore, but the subtle issue I have encountered make me think that having this be an explicit problem is better.
The issue is that
```rust
static mut FOO: &mut u32 = &mut 42;
static mut BAR = unsafe { FOO };
```
gets different allocations, instead of referring to the same one. This is also true for non-static mut, but promotion makes `static FOO: &u32 = &42;` annoying to demo.
Fixes https://github.com/rust-lang/rust/issues/61345
## Why is this being done?
In order to ensure all crates see the same nested allocations (which is the last issue that needs fixing before we can stabilize [`const_mut_refs`](https://github.com/rust-lang/rust/issues/57349)), I am working on creating anonymous (from the Rust side, to LLVM it's like a regular static item) static items for the nested allocations in a static. If we evaluate the static item in a downstream crate again, we will end up duplicating its nested allocations (and in some cases, like the `match` case, even duplicate the main allocation).
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Enforce coroutine-closure layouts are identical
Enforce that for an async closure, the by-ref and by-move coroutine layouts are identical. This is just a sanity check to make sure that optimizations aren't doing anything fishy.
r? oli-obk
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Make sure `tcx.create_def` also depends on the forever red node, instead of just `tcx.at(span).create_def`
oversight from https://github.com/rust-lang/rust/pull/119136
Not actually an issue, because all uses of `tcx.create_def` were in the resolver, which is `eval_always`, but still good to harden against future uses of `create_def`
cc `@petrochenkov` `@WaffleLapkin`
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Make sure `tcx.create_def` also depends on the forever red node, instead of just `tcx.at(span).create_def`
oversight from https://github.com/rust-lang/rust/pull/119136
Not actually an issue, because all uses of `tcx.create_def` were in the resolver, which is `eval_always`, but still good to harden against future uses of `create_def`
cc `@petrochenkov` `@WaffleLapkin`
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r=compiler-errors
Extend documentation for `Ty::to_opt_closure_kind` method
This API was... surprising to use. With a little extra documentation, the weirdness can be reduced quite a lot. :)
r? `@compiler-errors`
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just `tcx.at(span).create_def`
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Do not point at `#[allow(_)]` as the reason for compat lint triggering
Fix #121009.
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Uplift `TypeVisitableExt` into `rustc_type_ir`
This uplifts `TypeVisitableExt` into `rustc_type_ir` so it can be used in an interner-agnostic way. It also moves some `TypeSuperVisitable` bounds onto `Interner` since we don't expect to support libraries that have types which aren't foldable by default.
This restores a couple of asserts in the canonicalizer code we uplifted, and also makes it so that we can use type-flags-based helpers in the solver code, which I'm interested in uplifting.
r? lcnr
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Fully stop using the HIR in trait impl checks
At least I hope I found all happy path usages. I'll need to check if I can figure out a way to make queries declare that they don't access the HIR except in error paths
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Fix #121009.
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Remove good path delayed bugs
Because they're not that useful, and kind of annoying. Details in the individual commits.
r? ```@compiler-errors```
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Properly handle `async` block and `async fn` in `if` exprs without `else`
When encountering a tail expression in the then arm of an `if` expression without an `else` arm, account for `async fn` and `async` blocks to suggest `return`ing the value and pointing at the return type of the `async fn`.
We now also account for AFIT when looking for the return type to point at.
Fix #115405.
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Merge `impl_polarity` and `impl_trait_ref` queries
Hopefully this is perf neutral. I want to finish https://github.com/rust-lang/rust/pull/120835 and stop using the HIR in `coherent_trait`, which should then give us a perf improvement.
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It's only has a single remaining purpose: to ensure that a diagnostic is
printed when `trimmed_def_paths` is used. It's an annoying mechanism:
weak, with odd semantics, badly named, and gets in the way of other
changes.
This commit replaces it with a simpler `must_produce_diag` mechanism,
getting rid of a diagnostic `Level` along the way.
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Dejargonize `subst`
In favor of #110793, replace almost every occurence of `subst` and `substitution` from rustc codes, but they still remains in subtrees under `src/tools/` like clippy and test codes (I'd like to replace them after this)
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Fix async closures in CTFE
First commit renames `is_coroutine_or_closure` into `is_closure_like`, because `is_coroutine_or_closure_or_coroutine_closure` seems confusing and long.
Second commit fixes some forgotten cases where we want to handle `TyKind::CoroutineClosure` the same as closures and coroutines.
The test exercises the change to `ValidityVisitor::aggregate_field_path_elem` which is the source of #120946, but not the change to `UsedParamsNeedSubstVisitor`, though I feel like it's not that big of a deal. Let me know if you'd like for me to look into constructing a test for the latter, though I have no idea what it'd look like (we can't assert against `TooGeneric` anywhere?).
Fixes #120946
r? oli-obk cc ``@RalfJung``
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When encountering a tail expression in the then arm of an `if` expression
without an `else` arm, account for `async fn` and `async` blocks to
suggest `return`ing the value and pointing at the return type of the
`async fn`.
We now also account for AFIT when looking for the return type to point at.
Fix #115405.
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Rollup of 11 pull requests
Successful merges:
- #120765 (Reorder diagnostics API)
- #120833 (More internal emit diagnostics cleanups)
- #120899 (Gracefully handle non-WF alias in `assemble_alias_bound_candidates_recur`)
- #120917 (Remove a bunch of dead parameters in functions)
- #120928 (Add test for recently fixed issue)
- #120933 (check_consts: fix duplicate errors, make importance consistent)
- #120936 (improve `btree_cursors` functions documentation)
- #120944 (Check that the ABI of the instance we are inlining is correct)
- #120956 (Clean inlined type alias with correct param-env)
- #120962 (Add myself to library/std review)
- #120972 (fix ICE for deref coercions with type errors)
r? `@ghost`
`@rustbot` modify labels: rollup
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Now that we have both `delayed_bug` and `span_delayed_bug`, it makes
sense to use the generic term "delayed bug" more.
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