Make vec-shrink-panic test compatible with v0 mangling
The v0 mangling includes an instantiating crate in a mangled name,
which crates a false positive match for a word `panic`.
Rename crate name / test case to avoid the issue.
Add x.py option to --force-rerun compiletest tests
This can be used like `./x.py test src/test/ui/abi/ --force-rerun`, and is useful when verifying that newly blessed tests don't change between test runs (such as due to being dependent on the current time or memory layout or RNG), without needing to change the test file or find the right file in `build` to remove.
- also clarifies how thread.join and detaching of threads works
- the previous prose implied that there is a relationship between a
spawning thread and the thread being spawned, and that "child" threads
couldn't outlive their parents unless detached, which is incorrect.
Hide allocator details from TryReserveError
I think there's [no need for TryReserveError to carry detailed information](https://github.com/rust-lang/rust/issues/48043#issuecomment-825139280), but I wouldn't want that issue to delay stabilization of the `try_reserve` feature.
So I'm proposing to stabilize `try_reserve` with a `TryReserveError` as an opaque structure, and if needed, expose error details later.
This PR moves the `enum` to an unstable inner `TryReserveErrorKind` that lives under a separate feature flag. `TryReserveErrorKind` could possibly be left as an implementation detail forever, and the `TryReserveError` get methods such as `allocation_size() -> Option<usize>` or `layout() -> Option<Layout>` instead, or the details could be dropped completely to make try-reserve errors just a unit struct, and thus smaller and cheaper.
I was reading through source code to try to learn more about the language and how to make the most of it when I ran into a small typo, so I figured I'd offer up a fix! I'm pretty new now, but hopefully I can offer up more substantial changes later. :D
Rollup of 7 pull requests
Successful merges:
- #85807 (bootstrap: Disable initial-exec TLS model on powerpc)
- #87761 (Fix overflow in rustc happening if the `err_count()` is reduced in a stage.)
- #87775 (Add hint for unresolved associated trait items if the trait has a single item)
- #87779 (Remove special case for statement `NodeId` assignment)
- #87787 (Use `C-unwind` ABI for `__rust_start_panic` in `panic_abort`)
- #87809 (Fix typo in the ptr documentation)
- #87816 (Sync rustc_codegen_cranelift)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Sync rustc_codegen_cranelift
05677b6bd6c938ed760835d9b1f6514992654ae3 removes two assertions that should have been removed in https://github.com/rust-lang/rust/pull/87515. They are no longer correct and trigger while compiling the sysroot.
r? `@ghost`
`@rustbot` label +A-codegen +A-cranelift +T-compiler
Remove special case for statement `NodeId` assignment
We now let `noop_flat_map_stmt` assign `NodeId`s (via `visit_id`),
just as we do for other AST nodes.
Add hint for unresolved associated trait items if the trait has a single item
This PR introduces a special-cased hint for unresolved trait items paths. It is shown if:
- the path was not resolved to any existing trait item
- and no existing trait item's name was reasonably close with regard to edit distance
- and the trait only has a single item in the corresponding namespace
I didn't know where I should put tests, therefore so far I just managed to bless two existing tests. I would be glad for hints where should tests for a hint like this be created, how should they be named (with reference to the original issue?) and what tests should I create (is it enough to test it just for types? or create separate tests also for functions and constants?).
It could also be turned into a machine applicable suggestion I suppose.
This is my first `rustc` PR, so please go easy on me :)
Fixes: https://github.com/rust-lang/rust/issues/87638
Fix overflow in rustc happening if the `err_count()` is reduced in a stage.
This can happen if stashed diagnostics are removed or replaced with fewer errors. The semantics stay the same if built without overflow checks. Fixes#84219.
Background: I came across this independently by running `RUSTFLAGS="-C overflow-checks=on" ./x.py test`. Fixing this will allow us to move on and find further overflow errors with testing or fuzzing.
Add config.toml options for enabling overflow checks in rustc and std
The names are `overflow-checks` and `overflow-checks-std` and they work similar to `debug-assertions` and `debug-assertions-std`. Once added we can measure how big the performance impact actually is and maybe enable them for CI tests.
Enabling them already makes two ui tests fail:
```
failures:
[ui] ui/parser/item-free-const-no-body-semantic-fail.rs
[ui] ui/parser/item-free-static-no-body-semantic-fail.rs
```
(See #84219 and #87761.)
This allows opaque type inference to check for defining uses without having to pass down that def id via function arguments to every method that could possibly cause an opaque type to be compared with a concrete type
Previously each opaque type instantiation would create new inference vars, even for the same opaque type/substs combination. Now there is a global map in InferCtxt that gets filled whenever we encounter an opaque type.
Rollup of 9 pull requests
Successful merges:
- #87561 (thread set_name haiku implementation.)
- #87715 (Add long error explanation for E0625)
- #87727 (explicit_generic_args_with_impl_trait: fix min expected number of generics)
- #87742 (Validate FFI-safety warnings on naked functions)
- #87756 (Add back -Zno-profiler-runtime)
- #87759 (Re-use std::sealed::Sealed in os/linux/process.)
- #87760 (Promote `aarch64-apple-ios-sim` to Tier 2)
- #87770 (permit drop impls with generic constants in where clauses)
- #87780 (alloc: Use intra doc links for the reserve function)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
