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Auto merge of #95779 - cjgillot:ast-lifetimes-undeclared, r=petrochenkov

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Report undeclared lifetimes during late resolution.

First step in https://github.com/rust-lang/rust/pull/91557

We reuse the rib design of the current resolution framework. Specific `LifetimeRib` and `LifetimeRibKind` types are introduced. The most important variant is `LifetimeRibKind::Generics`, which happens each time we encounter something which may introduce generic lifetime parameters. It can be an item or a `for<...>` binder. The `LifetimeBinderKind` specifies how this rib behaves with respect to in-band lifetimes.

r? `@petrochenkov`
This commit is contained in:
bors 2022-04-17 12:56:19 +00:00
commit cb1924a42a
1 changed files with 8 additions and 8 deletions
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10
tests/ui/unused_unit.stderr
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@ -1,5 +1,5 @@
error: unneeded unit return type
--> $DIR/unused_unit.rs:19:28
--> $DIR/unused_unit.rs:19:58
|
LL | pub fn get_unit<F: Fn() -> (), G>(&self, f: F, _g: G) -> ()
| ^^^^^^ help: remove the `-> ()`
@ -11,15 +11,15 @@ LL | #![deny(clippy::unused_unit)]
| ^^^^^^^^^^^^^^^^^^^
error: unneeded unit return type
--> $DIR/unused_unit.rs:20:18
--> $DIR/unused_unit.rs:19:28
|
LL | where G: Fn() -> () {
LL | pub fn get_unit<F: Fn() -> (), G>(&self, f: F, _g: G) -> ()
| ^^^^^^ help: remove the `-> ()`
error: unneeded unit return type
--> $DIR/unused_unit.rs:19:58
--> $DIR/unused_unit.rs:20:18
|
LL | pub fn get_unit<F: Fn() -> (), G>(&self, f: F, _g: G) -> ()
LL | where G: Fn() -> () {
| ^^^^^^ help: remove the `-> ()`
error: unneeded unit return type