Enable Cargo's sparse protocol in CI
This enables the sparse protocol in CI in order to exercise and dogfood it. This is intended test the production server in a real-world situation.
Closes#107342
Add `rust.lto=off` to bootstrap and set as compiler/library default
Closes#107202
The issue mentions `embed-bitcode=on`, but here c8e6a9e8b6/src/bootstrap/compile.rs (L379-L381)
it appears that this is always set for std stage 1+, so I'm unsure if changes are needed here.
`@rustbot` label +A-bootstrap
The motivation here is to eliminate the `Option<(Delimiter,
DelimSpan)>`, which is `None` for the outermost token stream and `Some`
for all other token streams.
We are already treating the innermost frame specially -- this is the
`frame` vs `stack` distinction in `TokenCursor`. We can push that
further so that `frame` only contains the cursor, and `stack` elements
contain the delimiters for their children. When we are in the outermost
token stream `stack` is empty, so there are no stored delimiters, which
is what we want because the outermost token stream *has* no delimiters.
This change also shrinks `TokenCursor`, which shrinks `Parser` and
`LazyAttrTokenStreamImpl`, which is nice.
Sometimes the parser needs to desugar a doc comment into `#[doc =
r"foo"]`. Currently it does this in a hacky way: by pushing a "fake" new
frame (one without a delimiter) onto the `TokenCursor` stack.
This commit changes things so that the token stream itself is modified
in place. The nice thing about this is that it means
`TokenCursorFrame::delim_sp` is now only `None` for the outermost frame.
Rollup of 7 pull requests
Successful merges:
- #106919 (Recover `_` as `..` in field pattern)
- #107493 (Improve diagnostic for missing space in range pattern)
- #107515 (Improve pretty-printing of `HirIdValidator` errors)
- #107524 (Remove both StorageLive and StorageDead in CopyProp.)
- #107532 (Erase regions before doing uninhabited check in borrowck)
- #107559 (Rename `rust_2015` → `is_rust_2015`)
- #107577 (Reinstate the `hir-stats.rs` tests on stage 1.)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Erase regions before doing uninhabited check in borrowck
~Also, fingerprint query keys/values when debug assertions are enabled. This should make it easier to check for issues like this without `-Cincremental`, and make UI tests a bit cleaner.~ edit: moving that to a separate PR
Fixes#107505
Remove both StorageLive and StorageDead in CopyProp.
Fixes https://github.com/rust-lang/rust/issues/107511https://github.com/rust-lang/rust/pull/106908 removed StorageDead without the accompanying StorageLive. In loops, execution would see repeated StorageLive, without any StorageDead, which is UB.
So when removing storage statements, we have to remove both StorageLive and StorageDead.
~I also added a MIR validation pass for StorageLive. It may be a bit overzealous.~
Improve pretty-printing of `HirIdValidator` errors
This now uses `node_to_string` for both missing and seen Ids, which includes the snippet of code for which the Id was allocated. Also removes the duplicated printing of `HirId`, as `node_to_string` also includes that.
Improve diagnostic for missing space in range pattern
Improves the diagnostic in #107425 by turning it into a note explaining the parsing issue.
r? `@compiler-errors`
Revert "Teach parser to understand fake anonymous enum syntax" and related commits
anonymous enum types are currently ambiguous in positions like:
* `|` operator: `a as fn() -> B | C`
* closure args: `|_: as fn() -> A | B`
I first tried to thread around `RecoverAnonEnum` into all these positions, but the resulting complexity in the compiler is IMO not worth it, or at least worth a bit more thinking time. In the mean time, let's revert this syntax for now, so we can go back to the drawing board.
Fixes#107461
cc: `@estebank` `@cjgillot` #106960
---
### Squashed revert commits:
Revert "review comment: Remove AST AnonTy"
This reverts commit 020cca8d36.
Revert "Ensure macros are not affected"
This reverts commit 12d18e4031.
Revert "Emit fewer errors on patterns with possible type ascription"
This reverts commit c847a01a3b.
Revert "Teach parser to understand fake anonymous enum syntax"
This reverts commit 2d82420665.
Support generic function in `generate_function` assist
Part of #3639
This PR adds support for generic function generation in `generate_function` assist. Now the assist looks for generic parameters and trait bounds in scope, filters out irrelevant ones, and generates new function with them.
See `fn_generic_params()` for the outline of the procedure, and see comments on `filter_unnecessary_bounds()` for criteria for filtering. I think it's good criteria for most cases, but I'm open to opinions and suggestions.
The diff is pretty big, but it should run in linear time w.r.t. the number of nodes we operate on and should be fast enough.
Some notes:
- When we generate function in an existing impl, generic parameters may cause name conflict. While we can detect the conflict and rename conflicting params, I didn't find it worthwhile mainly because it's really easy to resolve on IDE: use Rename functionality.
- I've implemented graph structure myself, because we don't have graph library as a dependency and we only need the simplest one.
- Although `petgraph` is in our dependency graph and I was initially looking to use it, we don't actually depend on it AFAICT since it's only used in chalk's specialization graph handling, which we don't use. I'd be happy to replace my implementation with `petgraph` if it's okay to use it though.
- There are some caveats that I consider out of scope of this PR. See FIXME notes on added tests.
