Fixes#46099
Previously, we would check the 'move' and 'use' spans to see if we
should emit this message. However, this can give false positives when
macros are involved, since two distinct expressions may end up with the
same span.
Instead, we check the actual MIR `Location`, which eliminates false
positives.
Cache flags and escaping vars for predicates
With predicates becoming interned (rust-lang/compiler-team#285) this is now possible and could be a perf win. It would become an even larger win once we have recursive predicates.
cc @lcnr @nikomatsakis
r? @ghost
Upgrade Chalk
Things done in this PR:
- Upgrade Chalk to `0.11.0`
- Added compare-mode=chalk
- Bump rustc-hash in `librustc_data_structures` to `1.1.0` to match Chalk
- Removed `RustDefId` since the builtin type support is there
- Add a few more `FIXME(chalk)`s for problem spots I hit when running all tests with chalk
- Added some more implementation code for some newer builtin Chalk types (e.g. `FnDef`, `Array`)
- Lower `RegionOutlives` and `ObjectSafe` predicates
- Lower `Dyn` without the region
- Handle `Int`/`Float` `CanonicalVarKind`s
- Uncomment some Chalk tests that actually work now
- Remove the revisions in `src/test/ui/coherence/coherence-subtyping.rs` since they aren't doing anything different
r? @nikomatsakis
This fixes an issue with the following sample:
mod foo {
mod inaccessible {
pub struct X;
}
pub mod avail {
pub struct X;
}
}
fn main() { X; }
Instead of suggesting both `use crate::foo::inaccessible::X;` and `use
crate::foo::avail::X;`, it should only suggest the latter.
It is done by trimming the list of suggestions from inaccessible paths
if accessible paths are present.
Visibility is checked with `is_accessible_from` now instead of being
hard-coded.
-
Some tests fixes are trivial, and others require a bit more explaining,
here are my comments:
src/test/ui/issues/issue-35675.stderr: Only needs to make the enum
public to have the suggestion make sense.
src/test/ui/issues/issue-42944.stderr: Importing the tuple struct won't
help because its constructor is not visible, so the attempted
constructor does not work. In that case, it's better not to suggest it.
The case where the constructor is public is covered in `issue-26545.rs`.
Enable LLVM zlib
Compilers may generate ELF objects with compressed sections (although rustc currently doesn't do this). Currently, when linking these with `rust-lld`, you'll get this error:
`rust-lld: error: ...: contains a compressed section, but zlib is not available`
This enables zlib when building LLVM.
Add a lint to catch clashing `extern` fn declarations.
Closes#69390.
Adds lint `clashing_extern_decl` to detect when, within a single crate, an extern function of the same name is declared with different types. Because two symbols of the same name cannot be resolved to two different functions at link time, and one function cannot possibly have two types, a clashing extern declaration is almost certainly a mistake.
This lint does not run between crates because a project may have dependencies which both rely on the same extern function, but declare it in a different (but valid) way. For example, they may both declare an opaque type for one or more of the arguments (which would end up distinct types), or use types that are valid conversions in the language the extern fn is defined in. In these cases, we can't say that the clashing declaration is incorrect.
r? @eddyb
ci: allow gating GHA on everything but macOS
In our GitHub Actions setup macOS is too unreliable to gate on it, but the other builders work fine. This commit splits the macOS builders into a separate job (called `auto-fallible`), allowing us to gate on the auto job without failing due to macOS spurious failures.
cc https://github.com/rust-lang/rust-central-station/issues/848
r? @Mark-Simulacrum
Pre-compute `LocalDefId` <-> `HirId` mappings and remove `NodeId` <-> `HirId` conversion APIs
cc #50928
I don't know who is exactly the best person to review this.
r? @petrochenkov
lint: normalize projections using opaque types
Fixes#73251.
This PR normalizes projections which use opaque types (opaque types are otherwise linted against, which is would have previously made the test cases added in this PR fail).
