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Only use it when the type alias contains an opaque type.
Also does wf-checking on such type aliases.
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`EarlyBinder::new` -> `EarlyBinder::bind`
for consistency with `Binder::bind`. it may make sense to also add `EarlyBinder::dummy` in places where we know that no parameters exist, but I left that out of this PR.
r? `@jackh726` `@kylematsuda`
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Replace `tcx.mk_re_*` with `Region::new_*`
Second step in implementing https://github.com/rust-lang/compiler-team/issues/616
r? `@lcnr`
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Make `TyKind: Debug` have less verbose output
Current `TyKind: Debug` impl is basically unusable for debugging, its too verbose even for verbose debugging :rofl: This PR replaces the debug logic for `TyKind` with a more manual debug impl instead of a hand expanded derived impl. This should help make #107084 more reasonable to land since the output of `Ty: Debug` will be better.
This isn't a fully completed change to the `Debug` impl of `TyKind` as there's still logic from the derive macro for some variants. Some of the variants are also not consisten with the `-Zverbose` printing of `Ty`, ideally `-Zverbose` printing of `Ty` would also just defer to the debug impl instead of having lots of checks in pretty printing. I plan on fixing this in follow up PRs since it seems tricky to do in this one and its already a large PR :sweat_smile:
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r=compiler-errors
Require impl Trait in associated types to appear in method signatures
This implements the limited version of TAIT that was proposed in https://github.com/rust-lang/rust/issues/107645#issuecomment-1477899536
Similar to `impl Trait` in return types, `impl Trait` in associated types may only be used within the impl block which it is a part of. To make everything simpler and forward compatible to getting desugared to a plain type alias impl trait in the future, we're requiring that any associated functions or constants that want to register hidden types must be using the associated type in their signature (type of the constant or argument/return type of the associated method. Where bounds mentioning the associated type are ignored).
We have preexisting tests checking that this works transitively across multiple associated types in situations like
```rust
impl Foo for Bar {
type A = impl Trait;
type B = impl Iterator<Item = Self::A>;
fn foo() -> Self::B { ...... }
}
```
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type may be registered for an opaque type
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Replace `tcx.mk_trait_ref` with `TraitRef::new`
First step in implementing https://github.com/rust-lang/compiler-team/issues/616
r? `@lcnr`
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Add cross-language LLVM CFI support to the Rust compiler
This PR adds cross-language LLVM Control Flow Integrity (CFI) support to the Rust compiler by adding the `-Zsanitizer-cfi-normalize-integers` option to be used with Clang `-fsanitize-cfi-icall-normalize-integers` for normalizing integer types (see https://reviews.llvm.org/D139395).
It provides forward-edge control flow protection for C or C++ and Rust -compiled code "mixed binaries" (i.e., for when C or C++ and Rust -compiled code share the same virtual address space). For more information about LLVM CFI and cross-language LLVM CFI support for the Rust compiler, see design document in the tracking issue #89653.
Cross-language LLVM CFI can be enabled with -Zsanitizer=cfi and -Zsanitizer-cfi-normalize-integers, and requires proper (i.e., non-rustc) LTO (i.e., -Clinker-plugin-lto).
Thank you again, ``@bjorn3,`` ``@nikic,`` ``@samitolvanen,`` and the Rust community for all the help!
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This commit adds cross-language LLVM Control Flow Integrity (CFI)
support to the Rust compiler by adding the
`-Zsanitizer-cfi-normalize-integers` option to be used with Clang
`-fsanitize-cfi-icall-normalize-integers` for normalizing integer types
(see https://reviews.llvm.org/D139395).
It provides forward-edge control flow protection for C or C++ and Rust
-compiled code "mixed binaries" (i.e., for when C or C++ and Rust
-compiled code share the same virtual address space). For more
information about LLVM CFI and cross-language LLVM CFI support for the
Rust compiler, see design document in the tracking issue #89653.
Cross-language LLVM CFI can be enabled with -Zsanitizer=cfi and
-Zsanitizer-cfi-normalize-integers, and requires proper (i.e.,
non-rustc) LTO (i.e., -Clinker-plugin-lto).
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More `Typefoldable`/`TypeVisitable` cleanups
r? ``@lcnr``
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`ty::Binber::dummy` calls
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a `Span`
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In rust `new`-ish functions are usually the first ones in an `impl` block
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I'm surprised the compiler doesn't warn about these. It appears having
an `impl` on a struct is enough to avoid a warning about it never being
constructed.
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It's what all the call sites require.
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For a common pattern.
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Migrating rustc_infer to session diagnostics (part 5)
`@rustbot` label +A-translation
cc https://github.com/rust-lang/rust/issues/100717
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PlaceholderRegion
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removes `DiagArg`, as it's no longer necessary)
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And while doing the updates for that, also uses `FieldIdx` in `ProjectionKind::Field` and `TypeckResults::field_indices`.
There's more places that could use it (like `rustc_const_eval` and `LayoutS`), but I tried to keep this PR from exploding to *even more* places.
Part 2/? of https://github.com/rust-lang/compiler-team/issues/606
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Since structs are always `VariantIdx(0)`, there's a bunch of files where the only reason they had `VariantIdx` or `vec::Idx` imported at all was to get the first variant.
So this uses a constant for that, and adds some doc-comments to `VariantIdx` while I'm there, since it doesn't have any today.
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Remove Ty::is_region_ptr
Fixes #109372
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