Include ForeignItem when visiting types for WF check
Addresses Issue 95665 by including `hir::Node::ForeignItem` as a valid
type to visit in `diagnostic_hir_wf_check`.
Fixes#95665
Fix pretty printing of empty bound lists in where-clause
Repro:
```rust
macro_rules! assert_item_stringify {
($item:item $expected:literal) => {
assert_eq!(stringify!($item), $expected);
};
}
fn main() {
assert_item_stringify! {
fn f<'a, T>() where 'a:, T: {}
"fn f<'a, T>() where 'a:, T: {}"
}
}
```
Previously this assertion would fail because rustc renders the where-clause as `where 'a, T` which is invalid syntax.
This PR makes the above assertion pass.
This bug also affects `-Zunpretty=expanded`. The intention is for that to emit syntactically valid code, but the buggy output is not valid Rust syntax.
```console
$ rustc <(echo "fn f<'a, T>() where 'a:, T: {}") -Zunpretty=expanded
#![feature(prelude_import)]
#![no_std]
#[prelude_import]
use ::std::prelude::rust_2015::*;
#[macro_use]
extern crate std;
fn f<'a, T>() where 'a, T {}
```
```console
$ rustc <(echo "fn f<'a, T>() where 'a:, T: {}") -Zunpretty=expanded | rustc -
error: expected `:`, found `,`
--> <anon>:7:23
|
7 | fn f<'a, T>() where 'a, T {}
| ^ expected `:`
```
Make missing argument placeholder more obvious that it's a placeholder
Use `/* ty */` instead of `{ty}`, since people might be misled into thinking that this is valid syntax, and not just a diagnostic placeholder.
Fixes#96880
Fix `SourceScope` for `if let` bindings.
Fixes#97799.
I'm not sure how to test this properly, is there any way to observe the difference in behavior apart from `ui` tests? I'm worried that they would be overlooked in the case of a regression.
Make debug_triple depend on target json file content rather than file path
This ensures that changes to target json files will force a recompilation. And more importantly that moving the files doesn't force a recompilation.
This should fix https://github.com/Rust-for-Linux/linux/issues/792 (cc ``@ojeda)``
Stabilize `Path::try_exists()` and improve doc
This stabilizes the `Path::try_exists()` method which returns
`Result<bool, io::Error>` instead of `bool` allowing handling of errors
unrelated to the file not existing. (e.g permission errors)
Along with the stabilization it also:
* Warns that the `exists()` method is error-prone and suggests to use
the newly stabilized one.
* Suggests it instead of `metadata()` to handle errors.
* Mentions TOCTOU bugs to avoid false assumption that `try_exists()` is
completely safe fixed version of `exists()`.
* Renames the feature of still-unstable `std::fs::try_exists()` to
`fs_try_exists` to avoid name conflict.
The tracking issue #83186 remains open to track `fs_try_exists`.
Rollup of 5 pull requests
Successful merges:
- #98105 (rustdoc: remove tuple link on round braces)
- #98136 (Rename `impl_constness` to `constness`)
- #98146 (Remove --memory-init-file flag when linking with Emscripten)
- #98219 (Skip late bound regions in GATSubstCollector)
- #98233 (Remove accidental uses of `&A: Allocator`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Skip late bound regions in GATSubstCollector
#93227 liberated late bound regions when collecting GAT substs in wfcheck. It should simply skip late bound regions instead.
r? ``@compiler-errors``
Rename `impl_constness` to `constness`
The current code is a basis for `is_const_fn_raw`, and `impl_constness`
is no longer a valid name, which is previously used for determining the
constness of impls, and not items in general.
r? `@oli-obk`
once cell renamings
This PR does the renamings proposed in https://github.com/rust-lang/rust/issues/74465#issuecomment-1153703128
- Move/rename `lazy::{OnceCell, Lazy}` to `cell::{OnceCell, LazyCell}`
- Move/rename `lazy::{SyncOnceCell, SyncLazy}` to `sync::{OnceLock, LazyLock}`
(I used `Lazy...` instead of `...Lazy` as it seems to be more consistent, easier to pronounce, etc)
```@rustbot``` label +T-libs-api -T-libs
Batch proc_macro RPC for TokenStream iteration and combination operations
This is the first part of #86822, split off as requested in https://github.com/rust-lang/rust/pull/86822#pullrequestreview-1008655452. It reduces the number of RPC calls required for common operations such as iterating over and concatenating TokenStreams.
Rollup of 5 pull requests
Successful merges:
- #97803 (Impl Termination for Infallible and then make the Result impls of Termination more generic)
- #97828 (Allow configuring where artifacts are downloaded from)
- #98150 (Emscripten target: replace -g4 with -g, and -g3 with --profiling-funcs)
- #98195 (Fix rustdoc json primitive handling)
- #98205 (Remove a possible unnecessary assignment)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Remove a possible unnecessary assignment
The reference issue has been closed (the feature has been stabilized)
and things work fine without it, it seems.
Signed-off-by: Yuki Okushi <jtitor@2k36.org>
Emscripten target: replace -g4 with -g, and -g3 with --profiling-funcs
Emscripten prints the following warning:
```
emcc: warning: please replace -g4 with -gsource-map [-Wdeprecated]
```
`@sbc100`
The reference issue has been closed (the feature has been stabilized)
and things work fine without fine, it seems.
Signed-off-by: Yuki Okushi <jtitor@2k36.org>
ctfe: limit hashing of big const allocations when interning
Const allocations are only hashed for interning. However, they can be large, making the hashing expensive especially since it uses `FxHash`: it's better suited to short keys, not potentially big buffers like the actual bytes of allocation and the associated 1/8th sized `InitMask`.
We can partially hash these fields when they're large, hashing the length, and head and tail of these buffers, to
limit possible collisions while avoiding most of the hashing work.
r? `@ghost`
Rollup of 5 pull requests
Successful merges:
- #95392 (std: Stabilize feature try_reserve_2 )
- #97798 (Hide irrelevant lines in suggestions to allow for suggestions that are far from each other to be shown)
- #97844 (Windows: No panic if function not (yet) available)
- #98013 (Subtype FRU fields first in `type_changing_struct_update`)
- #98191 (Remove the rest of unnecessary `to_string`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Subtype FRU fields first in `type_changing_struct_update`
So this fixes a subtle bug that `type_changing_struct_update` introduced, where it'll no longer coerce the base expr correctly. I actually think this code is easier to understand now, too.
r? `@lcnr` since you reviewed the last one
Hide irrelevant lines in suggestions to allow for suggestions that are far from each other to be shown
This is an attempt to fix suggestions one part of which is 6 lines or more far from the first. I've noticed "the problem" (of not showing some parts of the suggestion) here: https://github.com/rust-lang/rust/pull/97759#discussion_r889689230.
I'm not sure about the implementation (this big closure is just bad and makes already complicated code even more so), but I want to at least discuss the result.
Here is an example of how this changes the output:
Before:
```text
help: consider enclosing expression in a block
|
3 ~ 'l: { match () { () => break 'l,
4 |
5 |
6 |
7 |
8 |
...
```
After:
```text
help: consider enclosing expression in a block
|
3 ~ 'l: { match () { () => break 'l,
4 |
...
31|
32~ } };
|
```
r? `@estebank`
`@rustbot` label +A-diagnostics +A-suggestion-diagnostics
`BitSet` related perf improvements
This commit makes two changes:
1. Changes `MaybeLiveLocals` to use `ChunkedBitSet`
2. Overrides the `fold` method for the iterator for `ChunkedBitSet`
I have local benchmarks verifying that each of these changes individually yield significant perf improvements to #96451 . I'm hoping this will be true outside of that context too. If that is not the case, I'll try to gate things on where they help as needed
r? `@nnethercote` who I believe was working on closely related things, cc `@tmiasko` because of the destprop pr
