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Stabilise irrefutable if-let and while-let patterns

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This stabilises RFC 2086 (https://github.com/rust-lang/rust/issues/44495).

Co-Authored-By: Sebastian Malton <sebastian@malton.name>
This commit is contained in:
varkor 2019-01-12 03:10:59 +00:00
parent b43986184b
commit afcb938116
30 changed files with 175 additions and 239 deletions
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2
src/test/ui/issues/issue-51714.rs
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@ -10,5 +10,5 @@ fn main() {
[(); return while let Some(n) = Some(0) {}];
//~^ ERROR return statement outside of function body
//~^^ ERROR irrefutable while-let pattern
//~^^ WARN irrefutable while-let pattern
}

13
src/test/ui/issues/issue-51714.stderr
View file

@ -22,13 +22,14 @@ error[E0572]: return statement outside of function body
LL | [(); return while let Some(n) = Some(0) {}];
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0165]: irrefutable while-let pattern
--> $DIR/issue-51714.rs:11:27
warning: irrefutable while-let pattern
--> $DIR/issue-51714.rs:11:17
|
LL | [(); return while let Some(n) = Some(0) {}];
| ^^^^^^^ irrefutable pattern
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: #[warn(irrefutable_let_patterns)] on by default
error: aborting due to 5 previous errors
error: aborting due to 4 previous errors
Some errors occurred: E0165, E0572.
For more information about an error, try `rustc --explain E0165`.
For more information about this error, try `rustc --explain E0572`.