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Enable new capture rules by default on edition 2024

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This commit is contained in:
Michael Goulet 2023-11-07 00:07:57 +00:00
parent acba7efe1b
commit 803772e81d
5 changed files with 40 additions and 9 deletions
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1
compiler/rustc_ast_lowering/src/lib.rs
View file

@ -1575,6 +1575,7 @@ fn lower_opaque_impl_trait(
fn_kind.expect("expected RPITs to be lowered with a FnKind"),
FnDeclKind::Impl | FnDeclKind::Trait
) || self.tcx.features().lifetime_capture_rules_2024
|| span.at_least_rust_2024()
{
// return-position impl trait in trait was decided to capture all
// in-scope lifetimes, which we collect for all opaques during resolution.

26
tests/ui/impl-trait/variance.e2024.stderr Normal file
View file

@ -0,0 +1,26 @@
error: [*, o]
--> $DIR/variance.rs:14:36
|
LL | fn not_captured_early<'a: 'a>() -> impl Sized {}
| ^^^^^^^^^^
error: [*, o]
--> $DIR/variance.rs:19:32
|
LL | fn captured_early<'a: 'a>() -> impl Sized + Captures<'a> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: [o]
--> $DIR/variance.rs:21:40
|
LL | fn not_captured_late<'a>(_: &'a ()) -> impl Sized {}
| ^^^^^^^^^^
error: [o]
--> $DIR/variance.rs:26:36
|
LL | fn captured_late<'a>(_: &'a ()) -> impl Sized + Captures<'a> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 4 previous errors

8
tests/ui/impl-trait/variance.new.stderr
View file

@ -1,23 +1,23 @@
error: [*, o]
--> $DIR/variance.rs:12:36
--> $DIR/variance.rs:14:36
|
LL | fn not_captured_early<'a: 'a>() -> impl Sized {}
| ^^^^^^^^^^
error: [*, o]
--> $DIR/variance.rs:16:32
--> $DIR/variance.rs:19:32
|
LL | fn captured_early<'a: 'a>() -> impl Sized + Captures<'a> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: [o]
--> $DIR/variance.rs:18:40
--> $DIR/variance.rs:21:40
|
LL | fn not_captured_late<'a>(_: &'a ()) -> impl Sized {}
| ^^^^^^^^^^
error: [o]
--> $DIR/variance.rs:22:36
--> $DIR/variance.rs:26:36
|
LL | fn captured_late<'a>(_: &'a ()) -> impl Sized + Captures<'a> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^

8
tests/ui/impl-trait/variance.old.stderr
View file

@ -1,23 +1,23 @@
error: [*]
--> $DIR/variance.rs:12:36
--> $DIR/variance.rs:14:36
|
LL | fn not_captured_early<'a: 'a>() -> impl Sized {}
| ^^^^^^^^^^
error: [*, o]
--> $DIR/variance.rs:16:32
--> $DIR/variance.rs:19:32
|
LL | fn captured_early<'a: 'a>() -> impl Sized + Captures<'a> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: []
--> $DIR/variance.rs:18:40
--> $DIR/variance.rs:21:40
|
LL | fn not_captured_late<'a>(_: &'a ()) -> impl Sized {}
| ^^^^^^^^^^
error: [o]
--> $DIR/variance.rs:22:36
--> $DIR/variance.rs:26:36
|
LL | fn captured_late<'a>(_: &'a ()) -> impl Sized + Captures<'a> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^

6
tests/ui/impl-trait/variance.rs
View file

@ -1,4 +1,6 @@
// revisions: old new
// revisions: old new e2024
//[e2024] edition: 2024
//[e2024] compile-flags: -Z unstable-options
#![cfg_attr(new, feature(lifetime_capture_rules_2024))]
@ -12,12 +14,14 @@ impl<T> Captures<'_> for T {}
fn not_captured_early<'a: 'a>() -> impl Sized {}
//[old]~^ [*]
//[new]~^^ [*, o]
//[e2024]~^^^ [*, o]
fn captured_early<'a: 'a>() -> impl Sized + Captures<'a> {} //~ [*, o]
fn not_captured_late<'a>(_: &'a ()) -> impl Sized {}
//[old]~^ []
//[new]~^^ [o]
//[e2024]~^^^ [o]
fn captured_late<'a>(_: &'a ()) -> impl Sized + Captures<'a> {} //~ [o]