Use the new solver in the `impossible_predicates`
The old solver is unsound for many reasons. One of which was weaponized by `@lcnr` in #140212, where the old solver was incompletely considering a dyn vtable method to be impossible and replacing its vtable entry with a null value. This null function could be called post-mono.
The new solver is expected to be less incomplete due to its correct handling of higher-ranked aliases in relate. This PR switches the `impossible_predicates` query to use the new solver, which patches this UB.
r? lcnr
Unfortunately, multiple people are reporting linker warnings related to
`__rust_no_alloc_shim_is_unstable` after this change. The solution isn't
quite clear yet, let's revert to green for now, and try a reland with a
determined solution for `__rust_no_alloc_shim_is_unstable`.
This reverts commit c8b7f32434, reversing
changes made to 667247db71.
Comparison of paths and strings is expected to be possible and needed
e.g. in tests. This change adds the impls os `PartialEq` between strings
and paths, both owned and unsized, in both directions.
ACP: https://github.com/rust-lang/libs-team/issues/151
the size of `AsyncStruct`'s destructor depends on whether the configured
panic strategy is 'unwind' or 'abort' so factor that into the test using
conditional compilation
fixesrust-lang/rust#140939
Remove mono item collection strategy override from -Zprint-mono-items
Previously `-Zprint-mono-items` would override the mono item collection
strategy. When debugging one doesn't want to change the behaviour, so
this was counter productive. Additionally, the produced behaviour was
artificial and might never arise without using the option in the first
place (`-Zprint-mono-items=eager` without `-Clink-dead-code`). Finally,
the option was incorrectly marked as `UNTRACKED`.
Resolve those issues, by turning `-Zprint-mono-items` into a boolean
flag that prints results of mono item collection without changing the
behaviour of mono item collection.
For codegen-units test incorporate `-Zprint-mono-items` flag directly
into compiletest tool.
Test changes are mechanical. `-Zprint-mono-items=lazy` was removed
without additional changes, and `-Zprint-mono-items=eager` was turned
into `-Clink-dead-code`. Linking dead code disables internalization, so
tests have been updated accordingly.
Async drop fix for async_drop_in_place<T> layout for unspecified T
Fix for https://github.com/rust-lang/rust/issues/140423.
Layout of `async_drop_in_place<T>::{closure}` is calculated for unspecified T from dataflow_const_prop `try_make_constant`.
`@oli-obk,` do you think, it may be a better solution to add check like `if !args[0].is_fully_specialized() { return None; }` in `fn async_drop_coroutine_layout`?
And could you, pls, recommend, how to implement `is_fully_specialized()` in a most simple way?
Partially stabilize LoongArch target features
Stabilization PR for the LoongArch target features. This PR stabilizes some of the target features tracked by #44839.
Specifically, this PR stabilizes the following target features:
* f
* d
* frecipe
* lasx
* lbt
* lsx
* lvz
Docs PR: https://github.com/rust-lang/reference/pull/1707
r? `@Amanieu`
Prefer to suggest stable candidates rather than unstable ones
Fixes#140240
The logic is to replace unstable suggestions if we meet a new stable one, and do nothing if any other situation. In old logic, we just use the first candidate we meet as the suggestion for the same items.
E.g., `std::range::legacy::Range` vs `std::ops::Range`, `legacy` in the former is unstable, we prefer to suggest use the latter.
remove intrinsics::drop_in_place
This was only ever accidentally stable, and has been marked as deprecated since Rust 1.52, released almost 4 years ago. We've removed the old serialization `derive`s, maybe we can remove this one as well?
As suggested by ``@jhpratt,`` let's see what crater says for this one.
Merge typeck loop with static/const item eval loop
r? `@ghost`
Let's try a small one first. Doing this in general has some bad cache coherence issues because the query caches are laid out in `Vec<QueryResult>` lists per query where each index refers to a `DefId` in the same order as we're iterating. Iterating two or more lists at the same time does have cache issues, so I want to poke a bit at it to see if we can't merge just a few of them at a time.
Improved error message for top-level or-patterns
I was confused by "top-level or-patterns are not allowed in `let` bindings" error, because it sounded like or-patterns were completely unsupported.
This error has an auto-fix suggestion that shows otherwise, but the auto-fix isn't always visible in IDEs.
I've changed the wording to be consistent with "`Fn` bounds require arguments in parentheses", and it doesn't sound like a dead-end any more.
Fix `broken-pipe-no-ice` run-make test for rpath-less builds
The `broken-pipe-no-ice` run-make test currently fails on rpath-less builds, because host compiler runtime libs are not configured for raw std command usages.
This PR is an alternative approach to #140744. However, instead of duplicating `run_make_support::util::set_host_compiler_dylib_path` logic, we instead support "ejecting" the "configured" underlying std `Command` from `bare_rustc()` and `rustdoc()`, where host compiler runtime libs are already set.
cc `@jchecahi`
r? `@Kobzol`
rustdoc: Replace unstable flag `--doctest-compilation-args` with a simpler one: `--doctest-build-arg`
Tracking issue: https://github.com/rust-lang/rust/issues/134172.
Context: https://github.com/rust-lang/rust/pull/137096#issuecomment-2776318800
Yeets the ad hoc shell-like lexer for 'nested' program arguments.
No FCP necessary since the flag is unstable.
I've chosen to replace `compilation` with `build` because it's shorter (you now need to pass it multiple times in order to pass many arguments to the doctest compiler, so it matters a bit) and since I prefer it esthetically.
**Issue**: Even though we don't process the argument passed to `--doctest-build-arg`, we end up passing it via an argument file (`rustc `@argfile`)` which delimits arguments by line break (LF or CRLF, [via](https://doc.rust-lang.org/rustc/command-line-arguments.html#path-load-command-line-flags-from-a-path)) meaning ultimately the arguments still get split which is unfortunate. Still, I think this change is an improvement over the status quo.
I'll update the tracking issue if/once this PR merges. I'll also add the (CR)LF issue to 'unresolved question'.
r? GuillaumeGomez
r? notriddle
