rustc_mir_build: reorder bindings #90925
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No functional changes intended.
I'm playing around with building compiler components using nightly rust
(2021-11-02) in a non-standard way. I encountered the following error while
trying to build rustc_mir_build:
```
error[E0597]: `wildcard` does not live long enough
--> rust/src/nightly/compiler/rustc_mir_build/src/build/matches/mod.rs:1767:82
|
1767 | let mut otherwise_candidate = Candidate::new(expr_place_builder.clone(), &wildcard, false);
| ^^^^^^^^^ borrowed value does not live long enough
...
1799 | }
| -
| |
| `wildcard` dropped here while still borrowed
| borrow might be used here, when `guard_candidate` is dropped and runs the destructor for type `Candidate<'_, '_>`
|
= note: values in a scope are dropped in the opposite order they are defined
```
I believe this flags an issue that may become an error in the future.
Swapping the order of `wildcard` and `guard_candidate` resolves it.
|
(rust-highfive has picked a reviewer for you, use r? to override) |
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@bors r+ rollup |
|
📌 Commit c1c2013 has been approved by |
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JohnTitor
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to JohnTitor/rust
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Nov 16, 2021
…etrochenkov
rustc_mir_build: reorder bindings
No functional changes intended.
I'm playing around with building compiler components using nightly rust
(2021-11-02) in a non-standard way. I encountered the following error while
trying to build rustc_mir_build:
```
error[E0597]: `wildcard` does not live long enough
--> rust/src/nightly/compiler/rustc_mir_build/src/build/matches/mod.rs:1767:82
|
1767 | let mut otherwise_candidate = Candidate::new(expr_place_builder.clone(), &wildcard, false);
| ^^^^^^^^^ borrowed value does not live long enough
...
1799 | }
| -
| |
| `wildcard` dropped here while still borrowed
| borrow might be used here, when `guard_candidate` is dropped and runs the destructor for type `Candidate<'_, '_>`
|
= note: values in a scope are dropped in the opposite order they are defined
```
I believe this flags an issue that may become an error in the future.
Swapping the order of `wildcard` and `guard_candidate` resolves it.
This was referenced Nov 16, 2021
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Nov 16, 2021
Rollup of 8 pull requests Successful merges: - rust-lang#86455 (check where-clause for explicit `Sized` before suggesting `?Sized`) - rust-lang#90801 (Normalize both arguments of `equate_normalized_input_or_output`) - rust-lang#90803 (Suggest `&str.chars()` on attempt to `&str.iter()`) - rust-lang#90819 (Fixes incorrect handling of TraitRefs when emitting suggestions.) - rust-lang#90910 (fix getting the discriminant of a zero-variant enum) - rust-lang#90925 (rustc_mir_build: reorder bindings) - rust-lang#90928 (Use a different server for checking clock drift) - rust-lang#90936 (Add a regression test for rust-lang#80772) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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No functional changes intended.
I'm playing around with building compiler components using nightly rust
(2021-11-02) in a non-standard way. I encountered the following error while
trying to build rustc_mir_build:
I believe this flags an issue that may become an error in the future.
Swapping the order of
wildcardandguard_candidateresolves it.