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Don't ICE in ExprUseVisitor on FRU for non-existent struct
Fixes #104613
Fixes #105202
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Suggest removing struct field from destructive binding only in shorthand scenario
Fixes #105028
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shorthand scenario
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Statics used in reachable function's inline asm are reachable
Fixes #104925.
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Verify that HIR parenting and Def parenting match.
This relationship is relied upon for `tcx.hir_owner_parent` query to return an accurate result.
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We already use a mix of `Literal` and `Lit`. The latter is better
because it is shorter without causing any ambiguity.
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Use `as_deref` in compiler (but only where it makes sense)
This simplifies some code :3
(there are some changes that are not exacly `as_deref`, but more like "clever `Option`/`Result` method use")
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Record `LocalDefId` in HIR nodes instead of a side table
This is part of an attempt to remove the `HirId -> LocalDefId` table from HIR.
This attempt is a prerequisite to creation of `LocalDefId` after HIR lowering (https://github.com/rust-lang/rust/pull/96840), by controlling how `def_id` information is accessed.
This first part adds the information to HIR nodes themselves instead of a table.
The second part is https://github.com/rust-lang/rust/pull/103902
The third part will be to make `hir::Visitor::visit_fn` take a `LocalDefId` as last parameter.
The fourth part will be to completely remove the side table.
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Use `derive_const` and rm manual StructuralEq impl
This does not change any semantics of the impl except for the const stability. It should be fine because trait methods and const bounds can never be used in stable without enabling `const_trait_impl`.
cc `@oli-obk`
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Delay `include_bytes` to AST lowering
Hopefully addresses #65818.
This PR introduces a new `ExprKind::IncludedBytes` which stores the path and bytes of a file included with `include_bytes!()`. We can then create a literal from the bytes during AST lowering, which means we don't need to escape the bytes into valid UTF8 which is the cause of most of the overhead of embedding large binary blobs.
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Unhide unknown spans
r? ```@estebank```
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`Future::Output`
No longer lint against `#[must_use] async fn foo()`.
When encountering a statement that awaits on a `Future`, check if the
`Future`'s parent item is annotated with `#[must_use]` and emit a lint
if so. This effectively makes `must_use` an annotation on the
`Future::Output` instead of only the `Future` itself.
Fix #78149.
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Lint against usages of `struct_span_lint_hir`.
r? `@compiler-errors`
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Port `dead_code` lints to be translatable.
This adds an additional comma to lists with three or more items, to be consistent with list formatters like `icu4x`.
r? `@davidtwco`
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Change #[suggestion_*] attributes to use style="..."
As discussed [on Zulip](https://rust-lang.zulipchat.com/#narrow/stream/336883-i18n/topic/.23100717.20tool_only_span_suggestion), this changes `#[(multipart_)suggestion_{short,verbose,hidden}(...)]` attributes to plain `#[(multipart_)suggestion(...)]` attributes with a `style = "{short,verbose,hidden}"` parameter.
It also adds a new style, `tool-only`, that corresponds to `tool_only_span_suggestion`/`tool_only_multipart_suggestion` and causes the suggestion to not be shown in human-readable output at all.
Best reviewed commit-by-commit, there's a bit of noise in there.
cc #100717 `@compiler-errors`
r? `@davidtwco`
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Track where diagnostics were created.
This implements the `-Ztrack-diagnostics` flag, which uses `#[track_caller]` to track where diagnostics are created. It is meant as a debugging tool much like `-Ztreat-err-as-bug`.
For example, the following code...
```rust
struct A;
struct B;
fn main(){
let _: A = B;
}
```
...now emits the following error message:
```
error[E0308]: mismatched types
--> src\main.rs:5:16
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5 | let _: A = B;
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-Ztrack-diagnostics: created at compiler\rustc_infer\src\infer\error_reporting\mod.rs:2275:31
```
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The new implementation doesn't use weak lang items and instead changes
`#[alloc_error_handler]` to an attribute macro just like
`#[global_allocator]`.
The attribute will generate the `__rg_oom` function which is called by
the compiler-generated `__rust_alloc_error_handler`. If no `__rg_oom`
function is defined in any crate then the compiler shim will call
`__rdl_oom` in the alloc crate which will simply panic.
This also fixes link errors with `-C link-dead-code` with
`default_alloc_error_handler`: `__rg_oom` was previously defined in the
alloc crate and would attempt to reference the `oom` lang item, even if
it didn't exist. This worked as long as `__rg_oom` was excluded from
linking since it was not called.
This is a prerequisite for the stabilization of
`default_alloc_error_handler` (#102318).
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spastorino noticed some silly expressions like `item_id.def_id.def_id`.
This commit renames several `def_id: OwnerId` fields as `owner_id`, so
those expressions become `item_id.owner_id.def_id`.
`item_id.owner_id.local_def_id` would be even clearer, but the use of
`def_id` for values of type `LocalDefId` is *very* widespread, so I left
that alone.
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Using the following command:
find compiler/ -type f -name '*.rs' -exec perl -i -gpe \
's/(#\[\w*suggestion)_(short|verbose|hidden)\(\s*(\S+,)?/\1(\3style = "\2",/g' \
'{}' +
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And a couple of other naming tweaks
Related to https://github.com/rust-lang/rust/issues/48054
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(But not fn() -> !, which is stable.)
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