Rollup of 6 pull requests #91790
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Rollup of 6 pull requests #91790
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As suggested in rust-lang#88564. This adds a `try_clone()` to `OwnedFd` by refactoring the code out of the existing `File`/`Socket` code.
This commit also updates `stdarch` git submodule.
…` point
```
error[E0759]: `self` has an anonymous lifetime `'_` but it needs to satisfy a `'static` lifetime requirement
--> $DIR/issue-72312.rs:10:24
|
LL | pub async fn start(&self) {
| ^^^^^ this data with an anonymous lifetime `'_`...
...
LL | require_static(async move {
| -------------- ...is required to live as long as `'static` here...
LL | &self;
| ----- ...and is captured here
|
note: `'static` lifetime requirement introduced by this trait bound
--> $DIR/issue-72312.rs:2:22
|
LL | fn require_static<T: 'static>(val: T) -> T {
| ^^^^^^^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0759`.
```
Fix rust-lang#72312.
* take diagnostic logic out of happy-path * sort/dedup once * add more comments
More accurate filtering still needed.
In Rust, nesting method calls with both require `&mut` access to `self`
produces a borrow-check error:
error[E0499]: cannot borrow `*self` as mutable more than once at a time
--> src/lib.rs:7:14
|
7 | self.foo(self.bar());
| ---------^^^^^^^^^^-
| | | |
| | | second mutable borrow occurs here
| | first borrow later used by call
| first mutable borrow occurs here
That's because Rust has a left-to-right evaluation order, and the method
receiver is passed first. Thus, the argument to the method cannot then
mutate `self`.
There's an easy solution to this error: just extract a local variable
for the inner argument:
let tmp = self.bar();
self.foo(tmp);
However, the error doesn't give any suggestion of how to solve the
problem. As a result, new users may assume that it's impossible to
express their code correctly and get stuck.
This commit adds a (non-structured) suggestion to extract a local
variable for the inner argument to solve the error. The suggestion uses
heuristics that eliminate most false positives, though there are a few
false negatives (cases where the suggestion should be emitted but is
not). Those other cases can be implemented in a future change.
Suggest using a temporary variable to fix borrowck errors Fixes rust-lang#77834. In Rust, nesting method calls with both require `&mut` access to `self` produces a borrow-check error: error[E0499]: cannot borrow `*self` as mutable more than once at a time --> src/lib.rs:7:14 | 7 | self.foo(self.bar()); | ---------^^^^^^^^^^- | | | | | | | second mutable borrow occurs here | | first borrow later used by call | first mutable borrow occurs here That's because Rust has a left-to-right evaluation order, and the method receiver is passed first. Thus, the argument to the method cannot then mutate `self`. There's an easy solution to this error: just extract a local variable for the inner argument: let tmp = self.bar(); self.foo(tmp); However, the error doesn't give any suggestion of how to solve the problem. As a result, new users may assume that it's impossible to express their code correctly and get stuck. This commit adds a (non-structured) suggestion to extract a local variable for the inner argument to solve the error. The suggestion uses heuristics that eliminate most false positives, though there are a few false negatives (cases where the suggestion should be emitted but is not). Those other cases can be implemented in a future change.
…r=joshtriplett Add a `try_clone()` function to `OwnedFd`. As suggested in rust-lang#88564. This adds a `try_clone()` to `OwnedFd` by refactoring the code out of the existing `File`/`Socket` code. r? ``@joshtriplett``
Point at capture points for non-`'static` reference crossing a `yield` point
```
error[E0759]: `self` has an anonymous lifetime `'_` but it needs to satisfy a `'static` lifetime requirement
--> $DIR/issue-72312.rs:10:24
|
LL | pub async fn start(&self) {
| ^^^^^ this data with an anonymous lifetime `'_`...
...
LL | require_static(async move {
| -------------- ...is required to live as long as `'static` here...
LL | &self;
| ----- ...and is captured here
|
note: `'static` lifetime requirement introduced by this trait bound
--> $DIR/issue-72312.rs:2:22
|
LL | fn require_static<T: 'static>(val: T) -> T {
| ^^^^^^^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0759`.
```
Fix rust-lang#72312.
Make `intrinsics::write_bytes` const This is required to constify `MaybeUninit::zeroed` and `(*mut T)::write_bytes`. Tracking issue: rust-lang#86302
Make `Borrow` and `BorrowMut` impls `const` Tracking issue: rust-lang#91522
…anieu Add spin_loop hint for RISC-V architecture This commit uses the PAUSE instruction (rust-lang/stdarch#1262) to implement RISC-V spin loop, and updates `stdarch` submodule to use the merged PAUSE instruction.
|
@bors r+ rollup=never p=6 |
|
📌 Commit 2356936 has been approved by |
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⌛ Testing commit 2356936 with merge 11f9b5ea82c48fcab8ab71d67851f9a79dce0e69... |
|
💔 Test failed - checks-actions |
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Successful merges:
try_clone()function toOwnedFd. #88794 (Add atry_clone()function toOwnedFd.)'staticreference crossing ayieldpoint #89734 (Point at capture points for non-'staticreference crossing ayieldpoint)intrinsics::write_bytesconst #90081 (Makeintrinsics::write_bytesconst)BorrowandBorrowMutimplsconst#90270 (MakeBorrowandBorrowMutimplsconst)Failed merges:
r? @ghost
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