compiletest: Document various parts of compiletest's `lib.rs`
This adds some much-needed comments to many of the items in compiletest's `lib.rs`, giving a better overview of how a compiletest invocation actually proceeds.
To make review easier I have refrained from renames or functional changes, though I couldn't resist getting rid of one obviously-redundant `Arc::clone` in `make_test_closure`.
Special treatment empty tuple when suggest adding a string literal in format macro.
For example:
```rust
let s = "123";
println!({}, "sss", s);
```
Suggest:
`println!("{:?} {} {}", {}, "sss", s);`
fixes#130170
Update precondition tests (especially for zero-size access to null)
I don't much like the current way I've updated the precondition check helpers, but I couldn't come up with anything better. Ideas welcome.
I've organized `tests/ui/precondition-checks` mostly with one file per function that has `assert_unsafe_precondition` in it, with revisions that check each precondition. The important new test is `tests/ui/precondition-checks/zero-size-null.rs`.
Fix clobber_abi and disallow SVE-related registers in Arm64EC inline assembly
Currently `clobber_abi` in Arm64EC inline assembly is implemented using `InlineAsmClobberAbi::AArch64NoX18`, but broken since it attempts to clobber registers that cannot be used in Arm64EC: https://godbolt.org/z/r3PTrGz5r
```
error: cannot use register `x13`: x13, x14, x23, x24, x28, v16-v31 cannot be used for Arm64EC
--> <source>:6:14
|
6 | asm!("", clobber_abi("C"), options(nostack, nomem, preserves_flags));
| ^^^^^^^^^^^^^^^^
error: cannot use register `x14`: x13, x14, x23, x24, x28, v16-v31 cannot be used for Arm64EC
--> <source>:6:14
|
6 | asm!("", clobber_abi("C"), options(nostack, nomem, preserves_flags));
| ^^^^^^^^^^^^^^^^
<omitted the same errors for v16-v31>
```
Additionally, this disallows SVE-related registers per https://github.com/rust-lang/rust/pull/131332#issuecomment-2401189142.
cc ``@dpaoliello``
r? ``@Amanieu``
``@rustbot`` label O-windows O-AArch64 +A-inline-assembly
Stabilize `Pin::as_deref_mut()`
Tracking issue: closes#86918
Stabilizing the following API:
```rust
impl<Ptr: DerefMut> Pin<Ptr> {
pub fn as_deref_mut(self: Pin<&mut Pin<Ptr>>) -> Pin<&mut Ptr::Target>;
}
```
I know that an FCP has not been started yet, but this isn't a very complex stabilization, and I'm hoping this can motivate an FCP to *get* started - this has been pending for a while and it's a very useful function when writing Future impls.
r? ``@jonhoo``
chore: rename `salsa` to `ra_salsa`
Laying some groundwork to start before I import the new Salsa crate. Here's why:
1. As part of the migration, `@darichey,` `@Wilfred,` and I will create new Salsa equivalents of the existing databases/query groups. We'll get them to compile crate-by-crate.
2. Once we wrote all equivalents of all queries, we'd start to refactor usage sites of the vendored Salsa to use the new Salsa databases.
3. Starting porting usage sites of old Salsa to the new Salsa.
4. Remove the vendored `ra_salsa`; declare victory.
internal: switch remaining OpQueues to use named structs
Building atop of https://github.com/rust-lang/rust-analyzer/pull/18195, I switched `GlobalState::fetch_build_data_queue` to use a struct instead of a tuple.
(I didn't switch `fetch_proc_macros_queue` to not return a bool, as the return value is only used in one spot.)
Use correct std/core prefix in lint output
changelog: none
I was waiting for #13452 to be merged before sending this one. `std` is used instead of `core` when appropriate in messages.
feat: respect references.exclude_tests in call-hierarchy
close#18212
### Changes
1. feat: respect `references.exclude_tests` in call-hierarchy
2. Modified the description of `references.exclude_tests`
fix: Do not consider mutable usage of deref to `*mut T` as deref_mut
Fixes#15799
We are doing some heuristics for deciding whether the given deref is deref or deref_mut here;
5982d9c420/crates/hir-ty/src/infer/mutability.rs (L182-L200)
But this heuristic is erroneous if we are dereferencing to a mut ptr and normally those cases are filtered out here as builtin;
5982d9c420/crates/hir-ty/src/mir/lower/as_place.rs (L165-L177)
Howerver, this works not so well if the given dereferencing is double dereferencings like the case in the #15799.
```rust
struct WrapPtr(*mut u32);
impl core::ops::Deref for WrapPtr {
type Target = *mut u32;
fn deref(&self) -> &Self::Target {
&self.0
}
}
fn main() {
let mut x = 0u32;
let wrap = WrapPtr(&mut x);
unsafe {
**wrap = 6;
}
}
```
Here are two - outer and inner - dereferences here, and the outer dereference is marked as deref_mut because there is an assignment operation.
And this deref_mut marking is propagated into the inner dereferencing.
In the later MIR lowering, the outer dereference is filtered out as it's expr type is `*mut u32`, but the expr type in the inner dereference is an ADT, so this false-mutablility is not filtered out.
This PR cuts propagation of this false mutablilty chain if the expr type is mut ptr.
Since this happens before the resolve_all, it may have some limitations when the expr type is determined as mut ptr at the very end of inferencing, but I couldn't find simple fix for it 🤔
This special case in `output_base_dir` had the unfortunate side-effect of
causing all run-make tests to share the same `stamp` file. So as soon as any
one of them succeeded, all of the failed tests would be considered up-to-date
and would no longer run in subsequent test invocations.
internal: Don't resolve extern crates in import fix point resolution
The fix point loop won't progress them given the potential extern crate candidates are set up at build time.
fix: Join rustfmt overrideCommand with project root
When providing a custom rustfmt command, join it with the project root instead of the workspace root. This fixes rust-analyzer getting the wrong invocation path in projects containing subprojects.
This makes the behaviour consistent with how a custom path provided in rust-analyzer.procMacro.server behaves already.
Resolves issue #18222
feat: Highlight exit points of async blocks
Async blocks act similar to async functions in that the await keywords are related, but also act like functions where the exit points are related.
Fixes#18147
