std: remove an allocation in `Path::with_extension`
`Path::with_extension` used to reallocate (and copy) paths twice per call, now it does it once, by checking the size of the previous and new extensions it's possible to call `PathBuf::with_capacity` and pass the exact capacity required.
This also reduces the memory consumption of the path returned from `Path::with_extension` by using exact capacity instead of using amortized exponential growth.
Querify unused trait check.
This code transitively loads information for all bodies, and from resolutions. As it does not return a value, it should be beneficial to have it as a query.
editor/code: [DX] Use notification command links for debugger installation
This PR improves DX (developer experience) when installing the VS Code extension for the first time. When doing so and trying to debug a Rust file, we get an error notification that either CodeLLDB or C++ extension/debugger should be installed (see image below).
<div align="center">
<img src="https://github.com/rust-lang/rust-analyzer/assets/20957750/e8ebeb1e-85f4-44e2-b79f-c48cf52e5f36" alt="Rust, prompt to install debug extension">
</div>
The PR enhances the links in the given notification and upon clicking instead of opening the Web page of the extension it installs the extension immediately, without the need to leave the editor.
Note: the feature needs to be refined, maybe an "install in progress" message or something similar, I left that for you guys to decide and implement. I think it also possible to first open the sidebar, open the Extensions tab, then run the extension installation command which would make it more user-friendly.
P.S. it is also possible to open the extension's details in VS Code directly via the same links and then the user would have to manually click on the Install button - if installation is not the desired behavior.
Happy coding! 🎉
Pass `TraitEnvironment` into `layout_ty` and `const_eval`
We need to do either this or get rid of trait environment in `normalize_ty`. Let's go with this for now.
Don't follow raw pointer derefs when considering method receiver candidates
In https://github.com/rust-lang/rust-analyzer/pull/15118, I enabled following raw pointer derefs when considering self type candidates. However, I also inadvertently enabled it for receiver type candidates, which is invalid and causes false positives (see new test).
Better diagnostics for dlltool errors.
When dlltool fails, show the full command that was executed. In particular, llvm-dlltool is not very helpful, printing a generic usage message rather than what actually went wrong, so stdout and stderr aren't of much use when troubleshooting.
allow opaques to be defined by trait queries, again
This basically reverts #112963.
Moreover, all call-sites of `enter_canonical_trait_query` can now define opaque types, see the ui test `defined-by-user-annotation.rs`.
Fixes#113689
r? `@compiler-errors` `@oli-obk`
Fix compiletest windows path finding with spaces
With `(?x)` enabled spaces are ignored unless you escape them, so the space wasn't being added to the character class
I don't think this makes any difference to the current test suite, but it could save someone a headache in the future
Safe Transmute: Fix ICE (due to UnevaluatedConst)
This patch updates the code that looks at the `Assume` type when evaluating if transmutation is possible. An ICE was being triggered in the case that the `Assume` parameter contained an unevaluated const (in this test case, due to a function with missing parameter names).
Fixes#110892
Add x86_64-unknown-linux-ohos target
This complements the existing `aarch64-unknown-linux-ohos` and `armv7-unknown-linux-ohos` targets.
This should be covered by the existing MCP (https://github.com/rust-lang/compiler-team/issues/568), but I can also create a new MCP if that is preferred.
Add support for allocators in `Rc` & `Arc`
Adds the ability for `std::rc:Rc`, `std::rc::Weak`, `std::sync::Arc`, and `std::sync::Weak` to live in custom allocators
miri: fail when calling a function that requires an unavailable target feature
miri will report an UB when calling a function that has a `#[target_feature(enable = ...)]` attribute is called and the required feature is not available.
"Available features" are the same that `is_x86_feature_detected!` (or equivalent) reports to be available during miri execution (which can be enabled or disabled with the `-C target-feature` flag).
CI: build CMake 3.20 to support LLVM 17
LLVM 17 will require CMake at least 3.20, so we have to go back to building our own CMake on the Linux x64 dist builder.
r? `@nikic`
Support reading uncompressed proc macro metadata
rust-lang/rust#113695 makes the dylib metadata uncompressed for perf reasons. This commit allows reading both the current compressed and future uncompressed dylib metadata.
rust-lang/rust#113695 makes the dylib metadata uncompressed for perf
reasons. This commit allows reading both the current compressed and
future uncompressed dylib metadata.
