Don't inspect the generated existential type items
r? @nikomatsakis
My debugging led me to the `hir::ItemExistential(..)` checks, which are entirely unnecessary because we never use the items directly. The issue was that items were iterated over in a random order (due to hashmaps), so if you checked the `ItemExistential` before the function that has the actual return `impl Trait`, you'd run into those ICEs you encountered.
lint to favor `..=` over `...` range patterns; migrate to `..=` throughout codebase
We probably need an RFC to actually deprecate the `...` syntax, but here's a candidate implementation for the lint considered in #51043. (My local build is super flaky, but hopefully I got all of the test revisions.)
Add `LocalTaskObj` to `core::task`
- Splits `libcore/task.rs` into submodules
- Adds `LocalTaskObj` and `SpawnLocalObjError` (-> [Commit for this](433e6b31a7))
Note: To make reviewing easy, both actions have their own commit
r? @cramertj
Do not build LLVM tools for any of the tools
None of the tools in the list should need LLVM tools themselves as far as I can
tell; if this is incorrect, we can re-enable the tool building later.
The primary reason for doing this is that rust-central-station uses the
BuildManifest tool and building LLVM there is not cached: it takes ~1.5
hours on the 2 core machine. This commit should make nightlies and
stable releases much faster.
Followup to https://github.com/rust-lang/rust/pull/51459, r? @kennytm
I'm mostly relying on CI to test this so probably don't roll it up; I'm not sure how to (and not particularly inclined to) wait for multiple hours to test this locally. I imagine that the failures should be fairly obvious when/if encountered.
As the comment explains, this is needed to prevent subtype from going
awry in higher-ranked cases, due to #33684. The proper fix here is
introducing universes (#48536).
Our implementation ends up changing the `PatKind::Range` variant in the
AST to take a `Spanned<RangeEnd>` instead of just a `RangeEnd`, because
the alternative would be to try to infer the span of the range operator
from the spans of the start and end subexpressions, which is both
hideous and nontrivial to get right (whereas getting the change to the
AST right was a simple game of type tennis).
This is concerning #51043.
