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| author | Esteban Küber <esteban@kuber.com.ar> | 2025-06-09 17:52:41 +0000 |
|---|---|---|
| committer | Esteban Küber <esteban@kuber.com.ar> | 2025-06-25 17:02:26 +0000 |
| commit | 8c3a033d7ffb0431c87cb02452d509e2b530a472 (patch) | |
| tree | 5d6f2a23db9c0b4e527762a4315837e16aa75ffe /tests | |
| parent | f1fb323dda177b0e39ef1c9dcdfc1190e7c107ee (diff) | |
| download | rust-8c3a033d7ffb0431c87cb02452d509e2b530a472.tar.gz rust-8c3a033d7ffb0431c87cb02452d509e2b530a472.zip | |
Add edition checks for some tests that had divergent output
In order to expose edition dependent divergences in some tests in the test suite, add explicit `edition` annotations. Some of these tests might require additional work to *avoid* the divergences, as they might have been unintentional. These are not exhaustive changes, purely opportunistic while looking at something else.
Diffstat (limited to 'tests')
43 files changed, 1184 insertions, 113 deletions
diff --git a/tests/ui/coroutine/auto-trait-regions.stderr b/tests/ui/coroutine/auto-trait-regions.stderr index 7a5949de55b..beb689d868d 100644 --- a/tests/ui/coroutine/auto-trait-regions.stderr +++ b/tests/ui/coroutine/auto-trait-regions.stderr @@ -1,8 +1,8 @@ error[E0626]: borrow may still be in use when coroutine yields --> $DIR/auto-trait-regions.rs:45:19 | -LL | let gen = #[coroutine] move || { - | ------- within this coroutine +LL | let generator = #[coroutine] move || { + | ------- within this coroutine LL | let a = A(&mut true, &mut true, No); | ^^^^^^^^^ ... @@ -11,14 +11,14 @@ LL | yield; | help: add `static` to mark this coroutine as unmovable | -LL | let gen = #[coroutine] static move || { - | ++++++ +LL | let generator = #[coroutine] static move || { + | ++++++ error[E0626]: borrow may still be in use when coroutine yields --> $DIR/auto-trait-regions.rs:45:30 | -LL | let gen = #[coroutine] move || { - | ------- within this coroutine +LL | let generator = #[coroutine] move || { + | ------- within this coroutine LL | let a = A(&mut true, &mut true, No); | ^^^^^^^^^ ... @@ -27,8 +27,8 @@ LL | yield; | help: add `static` to mark this coroutine as unmovable | -LL | let gen = #[coroutine] static move || { - | ++++++ +LL | let generator = #[coroutine] static move || { + | ++++++ error: implementation of `Foo` is not general enough --> $DIR/auto-trait-regions.rs:31:5 diff --git a/tests/ui/did_you_mean/bad-assoc-ty.stderr b/tests/ui/did_you_mean/bad-assoc-ty.edition2015.stderr index 7e34f4d35b4..0835f766a82 100644 --- a/tests/ui/did_you_mean/bad-assoc-ty.stderr +++ b/tests/ui/did_you_mean/bad-assoc-ty.edition2015.stderr @@ -1,5 +1,5 @@ error: missing angle brackets in associated item path - --> $DIR/bad-assoc-ty.rs:1:10 + --> $DIR/bad-assoc-ty.rs:5:10 | LL | type A = [u8; 4]::AssocTy; | ^^^^^^^ @@ -10,7 +10,7 @@ LL | type A = <[u8; 4]>::AssocTy; | + + error: missing angle brackets in associated item path - --> $DIR/bad-assoc-ty.rs:5:10 + --> $DIR/bad-assoc-ty.rs:9:10 | LL | type B = [u8]::AssocTy; | ^^^^ @@ -21,7 +21,7 @@ LL | type B = <[u8]>::AssocTy; | + + error: missing angle brackets in associated item path - --> $DIR/bad-assoc-ty.rs:9:10 + --> $DIR/bad-assoc-ty.rs:13:10 | LL | type C = (u8)::AssocTy; | ^^^^ @@ -32,7 +32,7 @@ LL | type C = <(u8)>::AssocTy; | + + error: missing angle brackets in associated item path - --> $DIR/bad-assoc-ty.rs:13:10 + --> $DIR/bad-assoc-ty.rs:17:10 | LL | type D = (u8, u8)::AssocTy; | ^^^^^^^^ @@ -43,7 +43,7 @@ LL | type D = <(u8, u8)>::AssocTy; | + + error: missing angle brackets in associated item path - --> $DIR/bad-assoc-ty.rs:17:10 + --> $DIR/bad-assoc-ty.rs:21:10 | LL | type E = _::AssocTy; | ^ @@ -54,7 +54,7 @@ LL | type E = <_>::AssocTy; | + + error: missing angle brackets in associated item path - --> $DIR/bad-assoc-ty.rs:21:19 + --> $DIR/bad-assoc-ty.rs:25:19 | LL | type F = &'static (u8)::AssocTy; | ^^^^ @@ -65,7 +65,7 @@ LL | type F = &'static <(u8)>::AssocTy; | + + error: missing angle brackets in associated item path - --> $DIR/bad-assoc-ty.rs:27:10 + --> $DIR/bad-assoc-ty.rs:31:10 | LL | type G = dyn 'static + (Send)::AssocTy; | ^^^^^^^^^^^^^^^^^^^^ @@ -76,7 +76,7 @@ LL | type G = <dyn 'static + (Send)>::AssocTy; | + + error: missing angle brackets in associated item path - --> $DIR/bad-assoc-ty.rs:46:10 + --> $DIR/bad-assoc-ty.rs:51:10 | LL | type I = ty!()::AssocTy; | ^^^^^ @@ -87,7 +87,7 @@ LL | type I = <ty!()>::AssocTy; | + + error: missing angle brackets in associated item path - --> $DIR/bad-assoc-ty.rs:39:19 + --> $DIR/bad-assoc-ty.rs:44:19 | LL | ($ty: ty) => ($ty::AssocTy); | ^^^ @@ -102,7 +102,7 @@ LL | ($ty: ty) => (<$ty>::AssocTy); | + + error[E0223]: ambiguous associated type - --> $DIR/bad-assoc-ty.rs:1:10 + --> $DIR/bad-assoc-ty.rs:5:10 | LL | type A = [u8; 4]::AssocTy; | ^^^^^^^^^^^^^^^^ @@ -114,7 +114,7 @@ LL + type A = <[u8; 4] as Example>::AssocTy; | error[E0223]: ambiguous associated type - --> $DIR/bad-assoc-ty.rs:5:10 + --> $DIR/bad-assoc-ty.rs:9:10 | LL | type B = [u8]::AssocTy; | ^^^^^^^^^^^^^ @@ -126,7 +126,7 @@ LL + type B = <[u8] as Example>::AssocTy; | error[E0223]: ambiguous associated type - --> $DIR/bad-assoc-ty.rs:9:10 + --> $DIR/bad-assoc-ty.rs:13:10 | LL | type C = (u8)::AssocTy; | ^^^^^^^^^^^^^ @@ -138,7 +138,7 @@ LL + type C = <u8 as Example>::AssocTy; | error[E0223]: ambiguous associated type - --> $DIR/bad-assoc-ty.rs:13:10 + --> $DIR/bad-assoc-ty.rs:17:10 | LL | type D = (u8, u8)::AssocTy; | ^^^^^^^^^^^^^^^^^ @@ -150,13 +150,13 @@ LL + type D = <(u8, u8) as Example>::AssocTy; | error[E0121]: the placeholder `_` is not allowed within types on item signatures for type aliases - --> $DIR/bad-assoc-ty.rs:17:10 + --> $DIR/bad-assoc-ty.rs:21:10 | LL | type E = _::AssocTy; | ^ not allowed in type signatures error[E0223]: ambiguous associated type - --> $DIR/bad-assoc-ty.rs:21:19 + --> $DIR/bad-assoc-ty.rs:25:19 | LL | type F = &'static (u8)::AssocTy; | ^^^^^^^^^^^^^ @@ -168,7 +168,7 @@ LL + type F = &'static <u8 as Example>::AssocTy; | error[E0223]: ambiguous associated type - --> $DIR/bad-assoc-ty.rs:27:10 + --> $DIR/bad-assoc-ty.rs:31:10 | LL | type G = dyn 'static + (Send)::AssocTy; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -180,7 +180,7 @@ LL + type G = <(dyn Send + 'static) as Example>::AssocTy; | warning: trait objects without an explicit `dyn` are deprecated - --> $DIR/bad-assoc-ty.rs:33:10 + --> $DIR/bad-assoc-ty.rs:37:10 | LL | type H = Fn(u8) -> (u8)::Output; | ^^^^^^^^^^^^^^ @@ -194,7 +194,7 @@ LL | type H = <dyn Fn(u8) -> (u8)>::Output; | ++++ + error[E0223]: ambiguous associated type - --> $DIR/bad-assoc-ty.rs:33:10 + --> $DIR/bad-assoc-ty.rs:37:10 | LL | type H = Fn(u8) -> (u8)::Output; | ^^^^^^^^^^^^^^^^^^^^^^ @@ -209,7 +209,7 @@ LL + type H = <(dyn Fn(u8) -> u8 + 'static) as IntoFuture>::Output; | error[E0223]: ambiguous associated type - --> $DIR/bad-assoc-ty.rs:39:19 + --> $DIR/bad-assoc-ty.rs:44:19 | LL | ($ty: ty) => ($ty::AssocTy); | ^^^^^^^^^^^^ @@ -225,7 +225,7 @@ LL + ($ty: ty) => (<u8 as Example>::AssocTy); | error[E0223]: ambiguous associated type - --> $DIR/bad-assoc-ty.rs:46:10 + --> $DIR/bad-assoc-ty.rs:51:10 | LL | type I = ty!()::AssocTy; | ^^^^^^^^^^^^^^ @@ -237,7 +237,7 @@ LL + type I = <u8 as Example>::AssocTy; | error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions - --> $DIR/bad-assoc-ty.rs:51:13 + --> $DIR/bad-assoc-ty.rs:56:13 | LL | fn foo<X: K<_, _>>(x: X) {} | ^ ^ not allowed in type signatures @@ -245,7 +245,7 @@ LL | fn foo<X: K<_, _>>(x: X) {} | not allowed in type signatures error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions - --> $DIR/bad-assoc-ty.rs:54:34 + --> $DIR/bad-assoc-ty.rs:59:34 | LL | fn bar<F>(_: F) where F: Fn() -> _ {} | ^ not allowed in type signatures @@ -257,7 +257,7 @@ LL + fn bar<F, T>(_: F) where F: Fn() -> T {} | error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions - --> $DIR/bad-assoc-ty.rs:57:19 + --> $DIR/bad-assoc-ty.rs:62:19 | LL | fn baz<F: Fn() -> _>(_: F) {} | ^ not allowed in type signatures @@ -269,7 +269,7 @@ LL + fn baz<F: Fn() -> T, T>(_: F) {} | error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs - --> $DIR/bad-assoc-ty.rs:60:33 + --> $DIR/bad-assoc-ty.rs:65:33 | LL | struct L<F>(F) where F: Fn() -> _; | ^ not allowed in type signatures @@ -281,7 +281,7 @@ LL + struct L<F, T>(F) where F: Fn() -> T; | error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions - --> $DIR/bad-assoc-ty.rs:82:38 + --> $DIR/bad-assoc-ty.rs:87:38 | LL | fn foo<F>(_: F) where F: Fn() -> _ {} | ^ not allowed in type signatures @@ -293,7 +293,7 @@ LL + fn foo<F, T>(_: F) where F: Fn() -> T {} | error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs - --> $DIR/bad-assoc-ty.rs:62:30 + --> $DIR/bad-assoc-ty.rs:67:30 | LL | struct M<F> where F: Fn() -> _ { | ^ not allowed in type signatures @@ -305,7 +305,7 @@ LL + struct M<F, T> where F: Fn() -> T { | error[E0121]: the placeholder `_` is not allowed within types on item signatures for enums - --> $DIR/bad-assoc-ty.rs:66:28 + --> $DIR/bad-assoc-ty.rs:71:28 | LL | enum N<F> where F: Fn() -> _ { | ^ not allowed in type signatures @@ -317,7 +317,7 @@ LL + enum N<F, T> where F: Fn() -> T { | error[E0121]: the placeholder `_` is not allowed within types on item signatures for unions - --> $DIR/bad-assoc-ty.rs:71:29 + --> $DIR/bad-assoc-ty.rs:76:29 | LL | union O<F> where F: Fn() -> _ { | ^ not allowed in type signatures @@ -329,7 +329,7 @@ LL + union O<F, T> where F: Fn() -> T { | error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union - --> $DIR/bad-assoc-ty.rs:73:5 + --> $DIR/bad-assoc-ty.rs:78:5 | LL | foo: F, | ^^^^^^ @@ -341,7 +341,7 @@ LL | foo: std::mem::ManuallyDrop<F>, | +++++++++++++++++++++++ + error[E0121]: the placeholder `_` is not allowed within types on item signatures for traits - --> $DIR/bad-assoc-ty.rs:77:29 + --> $DIR/bad-assoc-ty.rs:82:29 | LL | trait P<F> where F: Fn() -> _ { | ^ not allowed in type signatures diff --git a/tests/ui/did_you_mean/bad-assoc-ty.edition2021.stderr b/tests/ui/did_you_mean/bad-assoc-ty.edition2021.stderr new file mode 100644 index 00000000000..3cc403f9ac4 --- /dev/null +++ b/tests/ui/did_you_mean/bad-assoc-ty.edition2021.stderr @@ -0,0 +1,340 @@ +error: missing angle brackets in associated item path + --> $DIR/bad-assoc-ty.rs:5:10 + | +LL | type A = [u8; 4]::AssocTy; + | ^^^^^^^ + | +help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths + | +LL | type A = <[u8; 4]>::AssocTy; + | + + + +error: missing angle brackets in associated item path + --> $DIR/bad-assoc-ty.rs:9:10 + | +LL | type B = [u8]::AssocTy; + | ^^^^ + | +help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths + | +LL | type B = <[u8]>::AssocTy; + | + + + +error: missing angle brackets in associated item path + --> $DIR/bad-assoc-ty.rs:13:10 + | +LL | type C = (u8)::AssocTy; + | ^^^^ + | +help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths + | +LL | type C = <(u8)>::AssocTy; + | + + + +error: missing angle brackets in associated item path + --> $DIR/bad-assoc-ty.rs:17:10 + | +LL | type D = (u8, u8)::AssocTy; + | ^^^^^^^^ + | +help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths + | +LL | type D = <(u8, u8)>::AssocTy; + | + + + +error: missing angle brackets in associated item path + --> $DIR/bad-assoc-ty.rs:21:10 + | +LL | type E = _::AssocTy; + | ^ + | +help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths + | +LL | type E = <_>::AssocTy; + | + + + +error: missing angle brackets in associated item path + --> $DIR/bad-assoc-ty.rs:25:19 + | +LL | type F = &'static (u8)::AssocTy; + | ^^^^ + | +help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths + | +LL | type F = &'static <(u8)>::AssocTy; + | + + + +error: missing angle brackets in associated item path + --> $DIR/bad-assoc-ty.rs:31:10 + | +LL | type G = dyn 'static + (Send)::AssocTy; + | ^^^^^^^^^^^^^^^^^^^^ + | +help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths + | +LL | type G = <dyn 'static + (Send)>::AssocTy; + | + + + +error: missing angle brackets in associated item path + --> $DIR/bad-assoc-ty.rs:51:10 + | +LL | type I = ty!()::AssocTy; + | ^^^^^ + | +help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths + | +LL | type I = <ty!()>::AssocTy; + | + + + +error: missing angle brackets in associated item path + --> $DIR/bad-assoc-ty.rs:44:19 + | +LL | ($ty: ty) => ($ty::AssocTy); + | ^^^ +... +LL | type J = ty!(u8); + | ------- in this macro invocation + | + = note: this error originates in the macro `ty` (in Nightly builds, run with -Z macro-backtrace for more info) +help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths + | +LL | ($ty: ty) => (<$ty>::AssocTy); + | + + + +error[E0223]: ambiguous associated type + --> $DIR/bad-assoc-ty.rs:5:10 + | +LL | type A = [u8; 4]::AssocTy; + | ^^^^^^^^^^^^^^^^ + | +help: if there were a trait named `Example` with associated type `AssocTy` implemented for `[u8; 4]`, you could use the fully-qualified path + | +LL - type A = [u8; 4]::AssocTy; +LL + type A = <[u8; 4] as Example>::AssocTy; + | + +error[E0223]: ambiguous associated type + --> $DIR/bad-assoc-ty.rs:9:10 + | +LL | type B = [u8]::AssocTy; + | ^^^^^^^^^^^^^ + | +help: if there were a trait named `Example` with associated type `AssocTy` implemented for `[u8]`, you could use the fully-qualified path + | +LL - type B = [u8]::AssocTy; +LL + type B = <[u8] as Example>::AssocTy; + | + +error[E0223]: ambiguous associated type + --> $DIR/bad-assoc-ty.rs:13:10 + | +LL | type C = (u8)::AssocTy; + | ^^^^^^^^^^^^^ + | +help: if there were a trait named `Example` with associated type `AssocTy` implemented for `u8`, you could use the fully-qualified path + | +LL - type C = (u8)::AssocTy; +LL + type C = <u8 as Example>::AssocTy; + | + +error[E0223]: ambiguous associated type + --> $DIR/bad-assoc-ty.rs:17:10 + | +LL | type D = (u8, u8)::AssocTy; + | ^^^^^^^^^^^^^^^^^ + | +help: if there were a trait named `Example` with associated type `AssocTy` implemented for `(u8, u8)`, you could use the fully-qualified path + | +LL - type D = (u8, u8)::AssocTy; +LL + type D = <(u8, u8) as Example>::AssocTy; + | + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for type aliases + --> $DIR/bad-assoc-ty.rs:21:10 + | +LL | type E = _::AssocTy; + | ^ not allowed in type signatures + +error[E0223]: ambiguous associated type + --> $DIR/bad-assoc-ty.rs:25:19 + | +LL | type F = &'static (u8)::AssocTy; + | ^^^^^^^^^^^^^ + | +help: if there were a trait named `Example` with associated type `AssocTy` implemented for `u8`, you could use the fully-qualified path + | +LL - type F = &'static (u8)::AssocTy; +LL + type F = &'static <u8 as Example>::AssocTy; + | + +error[E0223]: ambiguous associated type + --> $DIR/bad-assoc-ty.rs:31:10 + | +LL | type G = dyn 'static + (Send)::AssocTy; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: if there were a trait named `Example` with associated type `AssocTy` implemented for `(dyn Send + 'static)`, you could use the fully-qualified path + | +LL - type G = dyn 'static + (Send)::AssocTy; +LL + type G = <(dyn Send + 'static) as Example>::AssocTy; + | + +error[E0782]: expected a type, found a trait + --> $DIR/bad-assoc-ty.rs:37:10 + | +LL | type H = Fn(u8) -> (u8)::Output; + | ^^^^^^^^^^^^^^ + | +help: you can add the `dyn` keyword if you want a trait object + | +LL | type H = <dyn Fn(u8) -> (u8)>::Output; + | ++++ + + +error[E0223]: ambiguous associated type + --> $DIR/bad-assoc-ty.rs:44:19 + | +LL | ($ty: ty) => ($ty::AssocTy); + | ^^^^^^^^^^^^ +... +LL | type J = ty!(u8); + | ------- in this macro invocation + | + = note: this error originates in the macro `ty` (in Nightly builds, run with -Z macro-backtrace for more info) +help: if there were a trait named `Example` with associated type `AssocTy` implemented for `u8`, you could use the fully-qualified path + | +LL - ($ty: ty) => ($ty::AssocTy); +LL + ($ty: ty) => (<u8 as Example>::AssocTy); + | + +error[E0223]: ambiguous associated type + --> $DIR/bad-assoc-ty.rs:51:10 + | +LL | type I = ty!()::AssocTy; + | ^^^^^^^^^^^^^^ + | +help: if there were a trait named `Example` with associated type `AssocTy` implemented for `u8`, you could use the fully-qualified path + | +LL - type I = ty!()::AssocTy; +LL + type I = <u8 as Example>::AssocTy; + | + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions + --> $DIR/bad-assoc-ty.rs:56:13 + | +LL | fn foo<X: K<_, _>>(x: X) {} + | ^ ^ not allowed in type signatures + | | + | not allowed in type signatures + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions + --> $DIR/bad-assoc-ty.rs:59:34 + | +LL | fn bar<F>(_: F) where F: Fn() -> _ {} + | ^ not allowed in type signatures + | +help: use type parameters instead + | +LL - fn bar<F>(_: F) where F: Fn() -> _ {} +LL + fn bar<F, T>(_: F) where F: Fn() -> T {} + | + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions + --> $DIR/bad-assoc-ty.rs:62:19 + | +LL | fn baz<F: Fn() -> _>(_: F) {} + | ^ not allowed in type signatures + | +help: use type parameters instead + | +LL - fn baz<F: Fn() -> _>(_: F) {} +LL + fn baz<F: Fn() -> T, T>(_: F) {} + | + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs + --> $DIR/bad-assoc-ty.rs:65:33 + | +LL | struct L<F>(F) where F: Fn() -> _; + | ^ not allowed in type signatures + | +help: use type parameters instead + | +LL - struct L<F>(F) where F: Fn() -> _; +LL + struct L<F, T>(F) where F: Fn() -> T; + | + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions + --> $DIR/bad-assoc-ty.rs:87:38 + | +LL | fn foo<F>(_: F) where F: Fn() -> _ {} + | ^ not allowed in type signatures + | +help: use type parameters instead + | +LL - fn foo<F>(_: F) where F: Fn() -> _ {} +LL + fn foo<F, T>(_: F) where F: Fn() -> T {} + | + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs + --> $DIR/bad-assoc-ty.rs:67:30 + | +LL | struct M<F> where F: Fn() -> _ { + | ^ not allowed in type signatures + | +help: use type parameters instead + | +LL - struct M<F> where F: Fn() -> _ { +LL + struct M<F, T> where F: Fn() -> T { + | + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for enums + --> $DIR/bad-assoc-ty.rs:71:28 + | +LL | enum N<F> where F: Fn() -> _ { + | ^ not allowed in type signatures + | +help: use type parameters instead + | +LL - enum N<F> where F: Fn() -> _ { +LL + enum N<F, T> where F: Fn() -> T { + | + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for unions + --> $DIR/bad-assoc-ty.rs:76:29 + | +LL | union O<F> where F: Fn() -> _ { + | ^ not allowed in type signatures + | +help: use type parameters instead + | +LL - union O<F> where F: Fn() -> _ { +LL + union O<F, T> where F: Fn() -> T { + | + +error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union + --> $DIR/bad-assoc-ty.rs:78:5 + | +LL | foo: F, + | ^^^^^^ + | + = note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>` +help: wrap the field type in `ManuallyDrop<...>` + | +LL | foo: std::mem::ManuallyDrop<F>, + | +++++++++++++++++++++++ + + +error[E0121]: the placeholder `_` is not allowed within types on item signatures for traits + --> $DIR/bad-assoc-ty.rs:82:29 + | +LL | trait P<F> where F: Fn() -> _ { + | ^ not allowed in type signatures + | +help: use type parameters instead + | +LL - trait P<F> where F: Fn() -> _ { +LL + trait P<F, T> where F: Fn() -> T { + | + +error: aborting due to 29 previous errors + +Some errors have detailed explanations: E0121, E0223, E0740, E0782. +For more information about an error, try `rustc --explain E0121`. diff --git a/tests/ui/did_you_mean/bad-assoc-ty.rs b/tests/ui/did_you_mean/bad-assoc-ty.rs index 5a559b01ea2..6e56cba24e1 100644 --- a/tests/ui/did_you_mean/bad-assoc-ty.rs +++ b/tests/ui/did_you_mean/bad-assoc-ty.rs @@ -1,3 +1,7 @@ +//@revisions: edition2015 edition2021 +//@[edition2015] edition:2015 +//@[edition2021] edition:2021 + type A = [u8; 4]::AssocTy; //~^ ERROR missing angle brackets in associated item path //~| ERROR ambiguous associated type @@ -31,9 +35,10 @@ type G = dyn 'static + (Send)::AssocTy; // This is actually a legal path with fn-like generic arguments in the middle! // Recovery should not apply in this context. type H = Fn(u8) -> (u8)::Output; -//~^ ERROR ambiguous associated type -//~| WARN trait objects without an explicit `dyn` are deprecated -//~| WARN this is accepted in the current edition +//[edition2015]~^ ERROR ambiguous associated type +//[edition2015]~| WARN trait objects without an explicit `dyn` are deprecated +//[edition2015]~| WARN this is accepted in the current edition +//[edition2021]~^^^^ ERROR expected a type, found a trait macro_rules! ty { ($ty: ty) => ($ty::AssocTy); diff --git a/tests/ui/feature-gates/feature-gate-unsized_fn_params.stderr b/tests/ui/feature-gates/feature-gate-unsized_fn_params.edition2015.stderr index 30f95851768..ac2d1ffa868 100644 --- a/tests/ui/feature-gates/feature-gate-unsized_fn_params.stderr +++ b/tests/ui/feature-gates/feature-gate-unsized_fn_params.edition2015.stderr @@ -1,5 +1,5 @@ error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time - --> $DIR/feature-gate-unsized_fn_params.rs:17:11 + --> $DIR/feature-gate-unsized_fn_params.rs:20:11 | LL | fn foo(x: dyn Foo) { | ^^^^^^^ doesn't have a size known at compile-time @@ -17,7 +17,7 @@ LL | fn foo(x: &dyn Foo) { | + error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time - --> $DIR/feature-gate-unsized_fn_params.rs:21:11 + --> $DIR/feature-gate-unsized_fn_params.rs:24:11 | LL | fn bar(x: Foo) { | ^^^ doesn't have a size known at compile-time @@ -34,7 +34,7 @@ LL | fn bar(x: &dyn Foo) { | ++++ error[E0277]: the size for values of type `[()]` cannot be known at compilation time - --> $DIR/feature-gate-unsized_fn_params.rs:25:11 + --> $DIR/feature-gate-unsized_fn_params.rs:30:11 | LL | fn qux(_: [()]) {} | ^^^^ doesn't have a size known at compile-time @@ -47,7 +47,7 @@ LL | fn qux(_: &[()]) {} | + error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time - --> $DIR/feature-gate-unsized_fn_params.rs:29:9 + --> $DIR/feature-gate-unsized_fn_params.rs:34:9 | LL | foo(*x); | ^^ doesn't have a size known at compile-time diff --git a/tests/ui/feature-gates/feature-gate-unsized_fn_params.edition2021.stderr b/tests/ui/feature-gates/feature-gate-unsized_fn_params.edition2021.stderr new file mode 100644 index 00000000000..12411f695f4 --- /dev/null +++ b/tests/ui/feature-gates/feature-gate-unsized_fn_params.edition2021.stderr @@ -0,0 +1,65 @@ +error[E0782]: expected a type, found a trait + --> $DIR/feature-gate-unsized_fn_params.rs:24:11 + | +LL | fn bar(x: Foo) { + | ^^^ + | +help: use a new generic type parameter, constrained by `Foo` + | +LL - fn bar(x: Foo) { +LL + fn bar<T: Foo>(x: T) { + | +help: you can also use an opaque type, but users won't be able to specify the type parameter when calling the `fn`, having to rely exclusively on type inference + | +LL | fn bar(x: impl Foo) { + | ++++ +help: alternatively, use a trait object to accept any type that implements `Foo`, accessing its methods at runtime using dynamic dispatch + | +LL | fn bar(x: &dyn Foo) { + | ++++ + +error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time + --> $DIR/feature-gate-unsized_fn_params.rs:20:11 + | +LL | fn foo(x: dyn Foo) { + | ^^^^^^^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `(dyn Foo + 'static)` + = help: unsized fn params are gated as an unstable feature +help: you can use `impl Trait` as the argument type + | +LL - fn foo(x: dyn Foo) { +LL + fn foo(x: impl Foo) { + | +help: function arguments must have a statically known size, borrowed types always have a known size + | +LL | fn foo(x: &dyn Foo) { + | + + +error[E0277]: the size for values of type `[()]` cannot be known at compilation time + --> $DIR/feature-gate-unsized_fn_params.rs:30:11 + | +LL | fn qux(_: [()]) {} + | ^^^^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `[()]` + = help: unsized fn params are gated as an unstable feature +help: function arguments must have a statically known size, borrowed slices always have a known size + | +LL | fn qux(_: &[()]) {} + | + + +error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time + --> $DIR/feature-gate-unsized_fn_params.rs:34:9 + | +LL | foo(*x); + | ^^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `(dyn Foo + 'static)` + = note: all function arguments must have a statically known size + = help: unsized fn params are gated as an unstable feature + +error: aborting due to 4 previous errors + +Some errors have detailed explanations: E0277, E0782. +For more information about an error, try `rustc --explain E0277`. diff --git a/tests/ui/feature-gates/feature-gate-unsized_fn_params.rs b/tests/ui/feature-gates/feature-gate-unsized_fn_params.rs index c04e57843d4..3c5f932e891 100644 --- a/tests/ui/feature-gates/feature-gate-unsized_fn_params.rs +++ b/tests/ui/feature-gates/feature-gate-unsized_fn_params.rs @@ -1,3 +1,6 @@ +//@revisions: edition2015 edition2021 +//@[edition2015] edition:2015 +//@[edition2021] edition:2021 #![allow(unused, bare_trait_objects)] #[repr(align(256))] struct A { @@ -18,7 +21,9 @@ fn foo(x: dyn Foo) { //~ ERROR [E0277] x.foo() } -fn bar(x: Foo) { //~ ERROR [E0277] +fn bar(x: Foo) { +//[edition2015]~^ ERROR [E0277] +//[edition2021]~^^ ERROR expected a type, found a trait x.foo() } diff --git a/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.stderr b/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.edition2015.stderr index a2d00edbb6d..68b4e2ed39f 100644 --- a/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.stderr +++ b/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.edition2015.stderr @@ -1,5 +1,5 @@ error[E0700]: hidden type for `impl Sized + 'a` captures lifetime that does not appear in bounds - --> $DIR/rpit-hidden-erased-unsoundness.rs:16:5 + --> $DIR/rpit-hidden-erased-unsoundness.rs:19:5 | LL | fn step2<'a, 'b: 'a>() -> impl Sized + 'a { | -- --------------- opaque type defined here diff --git a/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.edition2024.stderr b/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.edition2024.stderr new file mode 100644 index 00000000000..6c0c1789582 --- /dev/null +++ b/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.edition2024.stderr @@ -0,0 +1,10 @@ +error: lifetime may not live long enough + --> $DIR/rpit-hidden-erased-unsoundness.rs:24:5 + | +LL | fn step3<'a, 'b: 'a>() -> impl Send + 'a { + | -- lifetime `'b` defined here +LL | step2::<'a, 'b>() + | ^^^^^^^^^^^^^^^^^ returning this value requires that `'b` must outlive `'static` + +error: aborting due to 1 previous error + diff --git a/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.rs b/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.rs index 6863a3c73ba..3338063d8c6 100644 --- a/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.rs +++ b/tests/ui/impl-trait/alias-liveness/rpit-hidden-erased-unsoundness.rs @@ -1,3 +1,6 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 // This test should never pass! #![feature(type_alias_impl_trait)] @@ -14,11 +17,12 @@ fn step1<'a, 'b: 'a>() -> impl Sized + Captures<'b> + 'a { fn step2<'a, 'b: 'a>() -> impl Sized + 'a { step1::<'a, 'b>() - //~^ ERROR hidden type for `impl Sized + 'a` captures lifetime that does not appear in bounds + //[edition2015]~^ ERROR hidden type for `impl Sized + 'a` captures lifetime that does not appear in bounds } fn step3<'a, 'b: 'a>() -> impl Send + 'a { step2::<'a, 'b>() + //[edition2024]~^ ERROR lifetime may not live long enough // This should not be Send unless `'b: 'static` } diff --git a/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.stderr b/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.edition2015.stderr index a1e92e53384..769a878a45c 100644 --- a/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.stderr +++ b/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.edition2015.stderr @@ -1,5 +1,5 @@ error[E0700]: hidden type for `impl Swap + 'a` captures lifetime that does not appear in bounds - --> $DIR/rpit-hide-lifetime-for-swap.rs:17:5 + --> $DIR/rpit-hide-lifetime-for-swap.rs:20:5 | LL | fn hide<'a, 'b: 'a, T: 'static>(x: Rc<RefCell<&'b T>>) -> impl Swap + 'a { | -- -------------- opaque type defined here diff --git a/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.edition2024.stderr b/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.edition2024.stderr new file mode 100644 index 00000000000..6109184250b --- /dev/null +++ b/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.edition2024.stderr @@ -0,0 +1,17 @@ +error[E0597]: `x` does not live long enough + --> $DIR/rpit-hide-lifetime-for-swap.rs:27:38 + | +LL | let x = [1, 2, 3]; + | - binding `x` declared here +LL | let short = Rc::new(RefCell::new(&x)); + | ^^ borrowed value does not live long enough +... +LL | let res: &'static [i32; 3] = *long.borrow(); + | ----------------- type annotation requires that `x` is borrowed for `'static` +LL | res +LL | } + | - `x` dropped here while still borrowed + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0597`. diff --git a/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.rs b/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.rs index 4de2ffbb808..c4eaec478b8 100644 --- a/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.rs +++ b/tests/ui/impl-trait/alias-liveness/rpit-hide-lifetime-for-swap.rs @@ -1,3 +1,6 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 // This test should never pass! use std::cell::RefCell; @@ -15,13 +18,14 @@ impl<T> Swap for Rc<RefCell<T>> { fn hide<'a, 'b: 'a, T: 'static>(x: Rc<RefCell<&'b T>>) -> impl Swap + 'a { x - //~^ ERROR hidden type for `impl Swap + 'a` captures lifetime that does not appear in bounds + //[edition2015]~^ ERROR hidden type for `impl Swap + 'a` captures lifetime that does not appear in bounds } fn dangle() -> &'static [i32; 3] { let long = Rc::new(RefCell::new(&[4, 5, 6])); let x = [1, 2, 3]; let short = Rc::new(RefCell::new(&x)); + //[edition2024]~^ ERROR `x` does not live long enough hide(long.clone()).swap(hide(short)); let res: &'static [i32; 3] = *long.borrow(); res diff --git a/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.stderr b/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.edition2015.stderr index 304d7d43b78..64f0b201ca2 100644 --- a/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.stderr +++ b/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.edition2015.stderr @@ -1,5 +1,5 @@ error[E0277]: the size for values of type `(dyn Trait + 'static)` cannot be known at compilation time - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:7:13 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:10:13 | LL | fn fuz() -> (usize, Trait) { (42, Struct) } | ^^^^^^^^^^^^^^ doesn't have a size known at compile-time @@ -9,7 +9,7 @@ LL | fn fuz() -> (usize, Trait) { (42, Struct) } = note: the return type of a function must have a statically known size error[E0277]: the size for values of type `(dyn Trait + 'static)` cannot be known at compilation time - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:11:13 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:15:13 | LL | fn bar() -> (usize, dyn Trait) { (42, Struct) } | ^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time @@ -19,7 +19,7 @@ LL | fn bar() -> (usize, dyn Trait) { (42, Struct) } = note: the return type of a function must have a statically known size error[E0746]: return type cannot be a trait object without pointer indirection - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:15:13 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:19:13 | LL | fn bap() -> Trait { Struct } | ^^^^^ doesn't have a size known at compile-time @@ -34,7 +34,7 @@ LL | fn bap() -> Box<dyn Trait> { Box::new(Struct) } | +++++++ + +++++++++ + error[E0746]: return type cannot be a trait object without pointer indirection - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:17:13 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:22:13 | LL | fn ban() -> dyn Trait { Struct } | ^^^^^^^^^ doesn't have a size known at compile-time @@ -50,7 +50,7 @@ LL | fn ban() -> Box<dyn Trait> { Box::new(Struct) } | ++++ + +++++++++ + error[E0746]: return type cannot be a trait object without pointer indirection - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:19:13 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:24:13 | LL | fn bak() -> dyn Trait { unimplemented!() } | ^^^^^^^^^ doesn't have a size known at compile-time @@ -66,7 +66,7 @@ LL | fn bak() -> Box<dyn Trait> { Box::new(unimplemented!()) } | ++++ + +++++++++ + error[E0746]: return type cannot be a trait object without pointer indirection - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:21:13 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:26:13 | LL | fn bal() -> dyn Trait { | ^^^^^^^^^ doesn't have a size known at compile-time @@ -86,7 +86,7 @@ LL ~ Box::new(42) | error[E0746]: return type cannot be a trait object without pointer indirection - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:27:13 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:32:13 | LL | fn bax() -> dyn Trait { | ^^^^^^^^^ doesn't have a size known at compile-time @@ -106,7 +106,7 @@ LL ~ Box::new(42) | error[E0746]: return type cannot be a trait object without pointer indirection - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:62:13 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:67:13 | LL | fn bat() -> dyn Trait { | ^^^^^^^^^ doesn't have a size known at compile-time @@ -126,7 +126,7 @@ LL ~ Box::new(42) | error[E0746]: return type cannot be a trait object without pointer indirection - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:68:13 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:73:13 | LL | fn bay() -> dyn Trait { | ^^^^^^^^^ doesn't have a size known at compile-time @@ -146,7 +146,7 @@ LL ~ Box::new(42) | error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:7:35 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:10:35 | LL | fn fuz() -> (usize, Trait) { (42, Struct) } | ^^^^^^ expected `dyn Trait`, found `Struct` @@ -156,7 +156,7 @@ LL | fn fuz() -> (usize, Trait) { (42, Struct) } = help: `Struct` implements `Trait` so you could box the found value and coerce it to the trait object `Box<dyn Trait>`, you will have to change the expected type as well error[E0277]: the size for values of type `(dyn Trait + 'static)` cannot be known at compilation time - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:7:30 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:10:30 | LL | fn fuz() -> (usize, Trait) { (42, Struct) } | ^^^^^^^^^^^^ doesn't have a size known at compile-time @@ -166,7 +166,7 @@ LL | fn fuz() -> (usize, Trait) { (42, Struct) } = note: tuples must have a statically known size to be initialized error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:11:39 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:15:39 | LL | fn bar() -> (usize, dyn Trait) { (42, Struct) } | ^^^^^^ expected `dyn Trait`, found `Struct` @@ -176,7 +176,7 @@ LL | fn bar() -> (usize, dyn Trait) { (42, Struct) } = help: `Struct` implements `Trait` so you could box the found value and coerce it to the trait object `Box<dyn Trait>`, you will have to change the expected type as well error[E0277]: the size for values of type `(dyn Trait + 'static)` cannot be known at compilation time - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:11:34 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:15:34 | LL | fn bar() -> (usize, dyn Trait) { (42, Struct) } | ^^^^^^^^^^^^ doesn't have a size known at compile-time @@ -186,7 +186,7 @@ LL | fn bar() -> (usize, dyn Trait) { (42, Struct) } = note: tuples must have a statically known size to be initialized error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:36:16 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:41:16 | LL | fn bam() -> Box<dyn Trait> { | -------------- expected `Box<(dyn Trait + 'static)>` because of return type @@ -203,7 +203,7 @@ LL | return Box::new(Struct); | +++++++++ + error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:38:5 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:43:5 | LL | fn bam() -> Box<dyn Trait> { | -------------- expected `Box<(dyn Trait + 'static)>` because of return type @@ -220,7 +220,7 @@ LL | Box::new(42) | +++++++++ + error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:42:16 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:47:16 | LL | fn baq() -> Box<dyn Trait> { | -------------- expected `Box<(dyn Trait + 'static)>` because of return type @@ -237,7 +237,7 @@ LL | return Box::new(0); | +++++++++ + error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:44:5 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:49:5 | LL | fn baq() -> Box<dyn Trait> { | -------------- expected `Box<(dyn Trait + 'static)>` because of return type @@ -254,7 +254,7 @@ LL | Box::new(42) | +++++++++ + error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:48:9 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:53:9 | LL | fn baz() -> Box<dyn Trait> { | -------------- expected `Box<(dyn Trait + 'static)>` because of return type @@ -271,7 +271,7 @@ LL | Box::new(Struct) | +++++++++ + error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:50:9 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:55:9 | LL | fn baz() -> Box<dyn Trait> { | -------------- expected `Box<(dyn Trait + 'static)>` because of return type @@ -288,7 +288,7 @@ LL | Box::new(42) | +++++++++ + error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:55:9 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:60:9 | LL | fn baw() -> Box<dyn Trait> { | -------------- expected `Box<(dyn Trait + 'static)>` because of return type @@ -305,7 +305,7 @@ LL | Box::new(0) | +++++++++ + error[E0308]: mismatched types - --> $DIR/dyn-trait-return-should-be-impl-trait.rs:57:9 + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:62:9 | LL | fn baw() -> Box<dyn Trait> { | -------------- expected `Box<(dyn Trait + 'static)>` because of return type diff --git a/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.edition2021.stderr b/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.edition2021.stderr new file mode 100644 index 00000000000..5811431b494 --- /dev/null +++ b/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.edition2021.stderr @@ -0,0 +1,308 @@ +error[E0782]: expected a type, found a trait + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:10:21 + | +LL | fn fuz() -> (usize, Trait) { (42, Struct) } + | ^^^^^ + | +help: you can add the `dyn` keyword if you want a trait object + | +LL | fn fuz() -> (usize, dyn Trait) { (42, Struct) } + | +++ + +error[E0277]: the size for values of type `(dyn Trait + 'static)` cannot be known at compilation time + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:15:13 + | +LL | fn bar() -> (usize, dyn Trait) { (42, Struct) } + | ^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time + | + = help: within `(usize, (dyn Trait + 'static))`, the trait `Sized` is not implemented for `(dyn Trait + 'static)` + = note: required because it appears within the type `(usize, (dyn Trait + 'static))` + = note: the return type of a function must have a statically known size + +error[E0782]: expected a type, found a trait + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:19:13 + | +LL | fn bap() -> Trait { Struct } + | ^^^^^ + | +help: use `impl Trait` to return an opaque type, as long as you return a single underlying type + | +LL | fn bap() -> impl Trait { Struct } + | ++++ +help: alternatively, you can return an owned trait object + | +LL | fn bap() -> Box<dyn Trait> { Struct } + | +++++++ + + +error[E0746]: return type cannot be a trait object without pointer indirection + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:22:13 + | +LL | fn ban() -> dyn Trait { Struct } + | ^^^^^^^^^ doesn't have a size known at compile-time + | +help: consider returning an `impl Trait` instead of a `dyn Trait` + | +LL - fn ban() -> dyn Trait { Struct } +LL + fn ban() -> impl Trait { Struct } + | +help: alternatively, box the return type, and wrap all of the returned values in `Box::new` + | +LL | fn ban() -> Box<dyn Trait> { Box::new(Struct) } + | ++++ + +++++++++ + + +error[E0746]: return type cannot be a trait object without pointer indirection + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:24:13 + | +LL | fn bak() -> dyn Trait { unimplemented!() } + | ^^^^^^^^^ doesn't have a size known at compile-time + | +help: consider returning an `impl Trait` instead of a `dyn Trait` + | +LL - fn bak() -> dyn Trait { unimplemented!() } +LL + fn bak() -> impl Trait { unimplemented!() } + | +help: alternatively, box the return type, and wrap all of the returned values in `Box::new` + | +LL | fn bak() -> Box<dyn Trait> { Box::new(unimplemented!()) } + | ++++ + +++++++++ + + +error[E0746]: return type cannot be a trait object without pointer indirection + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:26:13 + | +LL | fn bal() -> dyn Trait { + | ^^^^^^^^^ doesn't have a size known at compile-time + | +help: consider returning an `impl Trait` instead of a `dyn Trait` + | +LL - fn bal() -> dyn Trait { +LL + fn bal() -> impl Trait { + | +help: alternatively, box the return type, and wrap all of the returned values in `Box::new` + | +LL ~ fn bal() -> Box<dyn Trait> { +LL | if true { +LL ~ return Box::new(Struct); +LL | } +LL ~ Box::new(42) + | + +error[E0746]: return type cannot be a trait object without pointer indirection + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:32:13 + | +LL | fn bax() -> dyn Trait { + | ^^^^^^^^^ doesn't have a size known at compile-time + | +help: consider returning an `impl Trait` instead of a `dyn Trait` + | +LL - fn bax() -> dyn Trait { +LL + fn bax() -> impl Trait { + | +help: alternatively, box the return type, and wrap all of the returned values in `Box::new` + | +LL ~ fn bax() -> Box<dyn Trait> { +LL | if true { +LL ~ Box::new(Struct) +LL | } else { +LL ~ Box::new(42) + | + +error[E0746]: return type cannot be a trait object without pointer indirection + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:67:13 + | +LL | fn bat() -> dyn Trait { + | ^^^^^^^^^ doesn't have a size known at compile-time + | +help: consider returning an `impl Trait` instead of a `dyn Trait` + | +LL - fn bat() -> dyn Trait { +LL + fn bat() -> impl Trait { + | +help: alternatively, box the return type, and wrap all of the returned values in `Box::new` + | +LL ~ fn bat() -> Box<dyn Trait> { +LL | if true { +LL ~ return Box::new(0); +LL | } +LL ~ Box::new(42) + | + +error[E0746]: return type cannot be a trait object without pointer indirection + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:73:13 + | +LL | fn bay() -> dyn Trait { + | ^^^^^^^^^ doesn't have a size known at compile-time + | +help: consider returning an `impl Trait` instead of a `dyn Trait` + | +LL - fn bay() -> dyn Trait { +LL + fn bay() -> impl Trait { + | +help: alternatively, box the return type, and wrap all of the returned values in `Box::new` + | +LL ~ fn bay() -> Box<dyn Trait> { +LL | if true { +LL ~ Box::new(0) +LL | } else { +LL ~ Box::new(42) + | + +error[E0308]: mismatched types + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:15:39 + | +LL | fn bar() -> (usize, dyn Trait) { (42, Struct) } + | ^^^^^^ expected `dyn Trait`, found `Struct` + | + = note: expected trait object `(dyn Trait + 'static)` + found struct `Struct` + = help: `Struct` implements `Trait` so you could box the found value and coerce it to the trait object `Box<dyn Trait>`, you will have to change the expected type as well + +error[E0277]: the size for values of type `(dyn Trait + 'static)` cannot be known at compilation time + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:15:34 + | +LL | fn bar() -> (usize, dyn Trait) { (42, Struct) } + | ^^^^^^^^^^^^ doesn't have a size known at compile-time + | + = help: within `(usize, (dyn Trait + 'static))`, the trait `Sized` is not implemented for `(dyn Trait + 'static)` + = note: required because it appears within the type `(usize, (dyn Trait + 'static))` + = note: tuples must have a statically known size to be initialized + +error[E0308]: mismatched types + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:41:16 + | +LL | fn bam() -> Box<dyn Trait> { + | -------------- expected `Box<(dyn Trait + 'static)>` because of return type +LL | if true { +LL | return Struct; + | ^^^^^^ expected `Box<dyn Trait>`, found `Struct` + | + = note: expected struct `Box<(dyn Trait + 'static)>` + found struct `Struct` + = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html +help: store this in the heap by calling `Box::new` + | +LL | return Box::new(Struct); + | +++++++++ + + +error[E0308]: mismatched types + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:43:5 + | +LL | fn bam() -> Box<dyn Trait> { + | -------------- expected `Box<(dyn Trait + 'static)>` because of return type +... +LL | 42 + | ^^ expected `Box<dyn Trait>`, found integer + | + = note: expected struct `Box<(dyn Trait + 'static)>` + found type `{integer}` + = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html +help: store this in the heap by calling `Box::new` + | +LL | Box::new(42) + | +++++++++ + + +error[E0308]: mismatched types + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:47:16 + | +LL | fn baq() -> Box<dyn Trait> { + | -------------- expected `Box<(dyn Trait + 'static)>` because of return type +LL | if true { +LL | return 0; + | ^ expected `Box<dyn Trait>`, found integer + | + = note: expected struct `Box<(dyn Trait + 'static)>` + found type `{integer}` + = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html +help: store this in the heap by calling `Box::new` + | +LL | return Box::new(0); + | +++++++++ + + +error[E0308]: mismatched types + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:49:5 + | +LL | fn baq() -> Box<dyn Trait> { + | -------------- expected `Box<(dyn Trait + 'static)>` because of return type +... +LL | 42 + | ^^ expected `Box<dyn Trait>`, found integer + | + = note: expected struct `Box<(dyn Trait + 'static)>` + found type `{integer}` + = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html +help: store this in the heap by calling `Box::new` + | +LL | Box::new(42) + | +++++++++ + + +error[E0308]: mismatched types + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:53:9 + | +LL | fn baz() -> Box<dyn Trait> { + | -------------- expected `Box<(dyn Trait + 'static)>` because of return type +LL | if true { +LL | Struct + | ^^^^^^ expected `Box<dyn Trait>`, found `Struct` + | + = note: expected struct `Box<(dyn Trait + 'static)>` + found struct `Struct` + = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html +help: store this in the heap by calling `Box::new` + | +LL | Box::new(Struct) + | +++++++++ + + +error[E0308]: mismatched types + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:55:9 + | +LL | fn baz() -> Box<dyn Trait> { + | -------------- expected `Box<(dyn Trait + 'static)>` because of return type +... +LL | 42 + | ^^ expected `Box<dyn Trait>`, found integer + | + = note: expected struct `Box<(dyn Trait + 'static)>` + found type `{integer}` + = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html +help: store this in the heap by calling `Box::new` + | +LL | Box::new(42) + | +++++++++ + + +error[E0308]: mismatched types + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:60:9 + | +LL | fn baw() -> Box<dyn Trait> { + | -------------- expected `Box<(dyn Trait + 'static)>` because of return type +LL | if true { +LL | 0 + | ^ expected `Box<dyn Trait>`, found integer + | + = note: expected struct `Box<(dyn Trait + 'static)>` + found type `{integer}` + = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html +help: store this in the heap by calling `Box::new` + | +LL | Box::new(0) + | +++++++++ + + +error[E0308]: mismatched types + --> $DIR/dyn-trait-return-should-be-impl-trait.rs:62:9 + | +LL | fn baw() -> Box<dyn Trait> { + | -------------- expected `Box<(dyn Trait + 'static)>` because of return type +... +LL | 42 + | ^^ expected `Box<dyn Trait>`, found integer + | + = note: expected struct `Box<(dyn Trait + 'static)>` + found type `{integer}` + = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html +help: store this in the heap by calling `Box::new` + | +LL | Box::new(42) + | +++++++++ + + +error: aborting due to 19 previous errors + +Some errors have detailed explanations: E0277, E0308, E0746, E0782. +For more information about an error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.rs b/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.rs index ccf0a1ad3d4..aa1f871d8ea 100644 --- a/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.rs +++ b/tests/ui/impl-trait/dyn-trait-return-should-be-impl-trait.rs @@ -1,3 +1,6 @@ +//@revisions: edition2015 edition2021 +//@[edition2015] edition:2015 +//@[edition2021] edition:2021 #![allow(bare_trait_objects)] struct Struct; trait Trait {} @@ -5,15 +8,17 @@ impl Trait for Struct {} impl Trait for u32 {} fn fuz() -> (usize, Trait) { (42, Struct) } -//~^ ERROR E0277 -//~| ERROR E0277 -//~| ERROR E0308 +//[edition2015]~^ ERROR E0277 +//[edition2015]~| ERROR E0277 +//[edition2015]~| ERROR E0308 +//[edition2021]~^^^^ ERROR expected a type, found a trait fn bar() -> (usize, dyn Trait) { (42, Struct) } //~^ ERROR E0277 //~| ERROR E0277 //~| ERROR E0308 fn bap() -> Trait { Struct } -//~^ ERROR E0746 +//[edition2015]~^ ERROR E0746 +//[edition2021]~^^ ERROR expected a type, found a trait fn ban() -> dyn Trait { Struct } //~^ ERROR E0746 fn bak() -> dyn Trait { unimplemented!() } //~ ERROR E0746 diff --git a/tests/ui/impl-trait/hidden-lifetimes.stderr b/tests/ui/impl-trait/hidden-lifetimes.edition2015.stderr index 70d8c816ecb..b63115f7658 100644 --- a/tests/ui/impl-trait/hidden-lifetimes.stderr +++ b/tests/ui/impl-trait/hidden-lifetimes.edition2015.stderr @@ -1,5 +1,5 @@ error[E0700]: hidden type for `impl Swap + 'a` captures lifetime that does not appear in bounds - --> $DIR/hidden-lifetimes.rs:29:5 + --> $DIR/hidden-lifetimes.rs:33:5 | LL | fn hide_ref<'a, 'b, T: 'static>(x: &'a mut &'b T) -> impl Swap + 'a { | -- -------------- opaque type defined here @@ -14,7 +14,7 @@ LL | fn hide_ref<'a, 'b, T: 'static>(x: &'a mut &'b T) -> impl Swap + 'a + use<' | ++++++++++++++++ error[E0700]: hidden type for `impl Swap + 'a` captures lifetime that does not appear in bounds - --> $DIR/hidden-lifetimes.rs:46:5 + --> $DIR/hidden-lifetimes.rs:50:5 | LL | fn hide_rc_refcell<'a, 'b: 'a, T: 'static>(x: Rc<RefCell<&'b T>>) -> impl Swap + 'a { | -- -------------- opaque type defined here diff --git a/tests/ui/impl-trait/hidden-lifetimes.edition2024.stderr b/tests/ui/impl-trait/hidden-lifetimes.edition2024.stderr new file mode 100644 index 00000000000..d585bb50b13 --- /dev/null +++ b/tests/ui/impl-trait/hidden-lifetimes.edition2024.stderr @@ -0,0 +1,26 @@ +error[E0515]: cannot return value referencing local variable `x` + --> $DIR/hidden-lifetimes.rs:41:5 + | +LL | hide_ref(&mut res).swap(hide_ref(&mut &x)); + | -- `x` is borrowed here +LL | res + | ^^^ returns a value referencing data owned by the current function + +error[E0597]: `x` does not live long enough + --> $DIR/hidden-lifetimes.rs:57:38 + | +LL | let x = [1, 2, 3]; + | - binding `x` declared here +LL | let short = Rc::new(RefCell::new(&x)); + | ^^ borrowed value does not live long enough +LL | hide_rc_refcell(long.clone()).swap(hide_rc_refcell(short)); +LL | let res: &'static [i32; 3] = *long.borrow(); + | ----------------- type annotation requires that `x` is borrowed for `'static` +LL | res +LL | } + | - `x` dropped here while still borrowed + +error: aborting due to 2 previous errors + +Some errors have detailed explanations: E0515, E0597. +For more information about an error, try `rustc --explain E0515`. diff --git a/tests/ui/impl-trait/hidden-lifetimes.rs b/tests/ui/impl-trait/hidden-lifetimes.rs index ae07c892768..b50c43bd3fa 100644 --- a/tests/ui/impl-trait/hidden-lifetimes.rs +++ b/tests/ui/impl-trait/hidden-lifetimes.rs @@ -1,3 +1,7 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 + // Test to show what happens if we were not careful and allowed invariant // lifetimes to escape though an impl trait. // @@ -27,14 +31,14 @@ impl<T> Swap for Rc<RefCell<T>> { // `&'a mut &'l T` are the same type. fn hide_ref<'a, 'b, T: 'static>(x: &'a mut &'b T) -> impl Swap + 'a { x - //~^ ERROR hidden type + //[edition2015]~^ ERROR hidden type } fn dangle_ref() -> &'static [i32; 3] { let mut res = &[4, 5, 6]; let x = [1, 2, 3]; hide_ref(&mut res).swap(hide_ref(&mut &x)); - res + res //[edition2024]~ ERROR cannot return value referencing local variable `x` } // Here we are hiding `'b` making the caller believe that `Rc<RefCell<&'s T>>` @@ -44,13 +48,13 @@ fn dangle_ref() -> &'static [i32; 3] { // only has a single lifetime. fn hide_rc_refcell<'a, 'b: 'a, T: 'static>(x: Rc<RefCell<&'b T>>) -> impl Swap + 'a { x - //~^ ERROR hidden type + //[edition2015]~^ ERROR hidden type } fn dangle_rc_refcell() -> &'static [i32; 3] { let long = Rc::new(RefCell::new(&[4, 5, 6])); let x = [1, 2, 3]; - let short = Rc::new(RefCell::new(&x)); + let short = Rc::new(RefCell::new(&x)); //[edition2024]~ ERROR `x` does not live long enough hide_rc_refcell(long.clone()).swap(hide_rc_refcell(short)); let res: &'static [i32; 3] = *long.borrow(); res diff --git a/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.stderr b/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.edition2015.stderr index 4e453c108d4..4ba59826231 100644 --- a/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.stderr +++ b/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.edition2015.stderr @@ -1,5 +1,5 @@ error[E0700]: hidden type for `impl Debug` captures lifetime that does not appear in bounds - --> $DIR/impl-fn-hrtb-bounds-2.rs:5:9 + --> $DIR/impl-fn-hrtb-bounds-2.rs:8:9 | LL | fn a() -> impl Fn(&u8) -> impl Debug { | ---------- opaque type defined here diff --git a/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.edition2024.stderr b/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.edition2024.stderr new file mode 100644 index 00000000000..c7aedfe96bb --- /dev/null +++ b/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.edition2024.stderr @@ -0,0 +1,15 @@ +error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait` + --> $DIR/impl-fn-hrtb-bounds-2.rs:7:27 + | +LL | fn a() -> impl Fn(&u8) -> impl Debug { + | ^^^^^^^^^^ `impl Trait` implicitly captures all lifetimes in scope + | +note: lifetime declared here + --> $DIR/impl-fn-hrtb-bounds-2.rs:7:19 + | +LL | fn a() -> impl Fn(&u8) -> impl Debug { + | ^ + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0657`. diff --git a/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.rs b/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.rs index b0aeded0ef7..f4bfbdeb9f3 100644 --- a/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.rs +++ b/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.rs @@ -1,8 +1,11 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 #![feature(impl_trait_in_fn_trait_return)] use std::fmt::Debug; -fn a() -> impl Fn(&u8) -> impl Debug { - |x| x //~ ERROR hidden type for `impl Debug` captures lifetime that does not appear in bounds +fn a() -> impl Fn(&u8) -> impl Debug { //[edition2024]~ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait` + |x| x //[edition2015]~ ERROR hidden type for `impl Debug` captures lifetime that does not appear in bounds } fn main() {} diff --git a/tests/ui/impl-trait/impl-fn-predefined-lifetimes.stderr b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.edition2015.stderr index 6064b09ef09..94476bcfbe8 100644 --- a/tests/ui/impl-trait/impl-fn-predefined-lifetimes.stderr +++ b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.edition2015.stderr @@ -1,5 +1,5 @@ error[E0792]: expected generic lifetime parameter, found `'_` - --> $DIR/impl-fn-predefined-lifetimes.rs:5:9 + --> $DIR/impl-fn-predefined-lifetimes.rs:8:9 | LL | fn a<'a>() -> impl Fn(&'a u8) -> (impl Debug + '_) { | -- this generic parameter must be used with a generic lifetime parameter diff --git a/tests/ui/impl-trait/impl-fn-predefined-lifetimes.edition2024.stderr b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.edition2024.stderr new file mode 100644 index 00000000000..2f1eacb0c34 --- /dev/null +++ b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.edition2024.stderr @@ -0,0 +1,11 @@ +error[E0792]: expected generic lifetime parameter, found `'_` + --> $DIR/impl-fn-predefined-lifetimes.rs:8:9 + | +LL | fn a<'a>() -> impl Fn(&'a u8) -> (impl Debug + '_) { + | -- this generic parameter must be used with a generic lifetime parameter +LL | |x| x + | ^ + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0792`. diff --git a/tests/ui/impl-trait/impl-fn-predefined-lifetimes.rs b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.rs index 199cbbf4fcc..b2963cc10fa 100644 --- a/tests/ui/impl-trait/impl-fn-predefined-lifetimes.rs +++ b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.rs @@ -1,3 +1,6 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 #![feature(impl_trait_in_fn_trait_return)] use std::fmt::Debug; diff --git a/tests/ui/impl-trait/issues/issue-54895.stderr b/tests/ui/impl-trait/issues/issue-54895.edition2015.stderr index 64b425328e3..27a3c6c8b7c 100644 --- a/tests/ui/impl-trait/issues/issue-54895.stderr +++ b/tests/ui/impl-trait/issues/issue-54895.edition2015.stderr @@ -1,11 +1,11 @@ error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait` - --> $DIR/issue-54895.rs:15:53 + --> $DIR/issue-54895.rs:18:53 | LL | fn f() -> impl for<'a> Trait<'a, Out = impl Sized + 'a> { | ^^ | note: lifetime declared here - --> $DIR/issue-54895.rs:15:20 + --> $DIR/issue-54895.rs:18:20 | LL | fn f() -> impl for<'a> Trait<'a, Out = impl Sized + 'a> { | ^^ diff --git a/tests/ui/impl-trait/issues/issue-54895.edition2024.stderr b/tests/ui/impl-trait/issues/issue-54895.edition2024.stderr new file mode 100644 index 00000000000..54aa29e62d8 --- /dev/null +++ b/tests/ui/impl-trait/issues/issue-54895.edition2024.stderr @@ -0,0 +1,27 @@ +error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait` + --> $DIR/issue-54895.rs:18:40 + | +LL | fn f() -> impl for<'a> Trait<'a, Out = impl Sized + 'a> { + | ^^^^^^^^^^^^^^^ `impl Trait` implicitly captures all lifetimes in scope + | +note: lifetime declared here + --> $DIR/issue-54895.rs:18:20 + | +LL | fn f() -> impl for<'a> Trait<'a, Out = impl Sized + 'a> { + | ^^ + +error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait` + --> $DIR/issue-54895.rs:18:53 + | +LL | fn f() -> impl for<'a> Trait<'a, Out = impl Sized + 'a> { + | ^^ + | +note: lifetime declared here + --> $DIR/issue-54895.rs:18:20 + | +LL | fn f() -> impl for<'a> Trait<'a, Out = impl Sized + 'a> { + | ^^ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0657`. diff --git a/tests/ui/impl-trait/issues/issue-54895.rs b/tests/ui/impl-trait/issues/issue-54895.rs index 13c0038ce43..bc1841209e1 100644 --- a/tests/ui/impl-trait/issues/issue-54895.rs +++ b/tests/ui/impl-trait/issues/issue-54895.rs @@ -1,3 +1,6 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 trait Trait<'a> { type Out; fn call(&'a self) -> Self::Out; @@ -14,6 +17,7 @@ impl<'a> Trait<'a> for X { fn f() -> impl for<'a> Trait<'a, Out = impl Sized + 'a> { //~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait` + //[edition2024]~^^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait` X(()) } diff --git a/tests/ui/impl-trait/issues/issue-79099.stderr b/tests/ui/impl-trait/issues/issue-79099.edition2015.stderr index d7c0c494454..ee1a479310d 100644 --- a/tests/ui/impl-trait/issues/issue-79099.stderr +++ b/tests/ui/impl-trait/issues/issue-79099.edition2015.stderr @@ -1,5 +1,5 @@ error: expected identifier, found `1` - --> $DIR/issue-79099.rs:3:65 + --> $DIR/issue-79099.rs:6:65 | LL | let f: impl core::future::Future<Output = u8> = async { 1 }; | ----- ^ expected identifier @@ -10,7 +10,7 @@ LL | let f: impl core::future::Future<Output = u8> = async { 1 }; = note: for more on editions, read https://doc.rust-lang.org/edition-guide error[E0562]: `impl Trait` is not allowed in the type of variable bindings - --> $DIR/issue-79099.rs:3:16 + --> $DIR/issue-79099.rs:6:16 | LL | let f: impl core::future::Future<Output = u8> = async { 1 }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/impl-trait/issues/issue-79099.edition2024.stderr b/tests/ui/impl-trait/issues/issue-79099.edition2024.stderr new file mode 100644 index 00000000000..3e422e25136 --- /dev/null +++ b/tests/ui/impl-trait/issues/issue-79099.edition2024.stderr @@ -0,0 +1,14 @@ +error[E0562]: `impl Trait` is not allowed in the type of variable bindings + --> $DIR/issue-79099.rs:6:16 + | +LL | let f: impl core::future::Future<Output = u8> = async { 1 }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `impl Trait` is only allowed in arguments and return types of functions and methods + = note: see issue #63065 <https://github.com/rust-lang/rust/issues/63065> for more information + = help: add `#![feature(impl_trait_in_bindings)]` to the crate attributes to enable + = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0562`. diff --git a/tests/ui/impl-trait/issues/issue-79099.rs b/tests/ui/impl-trait/issues/issue-79099.rs index c2bad59045b..8426298620f 100644 --- a/tests/ui/impl-trait/issues/issue-79099.rs +++ b/tests/ui/impl-trait/issues/issue-79099.rs @@ -1,8 +1,11 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 struct Bug { V1: [(); { let f: impl core::future::Future<Output = u8> = async { 1 }; //~^ ERROR `impl Trait` is not allowed in the type of variable bindings - //~| ERROR expected identifier + //[edition2015]~| ERROR expected identifier 1 }], } diff --git a/tests/ui/impl-trait/precise-capturing/dyn-use.stderr b/tests/ui/impl-trait/precise-capturing/dyn-use.edition2015.stderr index d8903fc4129..9951e9e0965 100644 --- a/tests/ui/impl-trait/precise-capturing/dyn-use.stderr +++ b/tests/ui/impl-trait/precise-capturing/dyn-use.edition2015.stderr @@ -1,5 +1,5 @@ error: expected one of `!`, `(`, `::`, `<`, `where`, or `{`, found keyword `use` - --> $DIR/dyn-use.rs:1:26 + --> $DIR/dyn-use.rs:4:26 | LL | fn dyn() -> &'static dyn use<> { &() } | ^^^ expected one of `!`, `(`, `::`, `<`, `where`, or `{` diff --git a/tests/ui/impl-trait/precise-capturing/dyn-use.edition2024.stderr b/tests/ui/impl-trait/precise-capturing/dyn-use.edition2024.stderr new file mode 100644 index 00000000000..cb3fe4cb583 --- /dev/null +++ b/tests/ui/impl-trait/precise-capturing/dyn-use.edition2024.stderr @@ -0,0 +1,26 @@ +error: expected identifier, found keyword `dyn` + --> $DIR/dyn-use.rs:4:4 + | +LL | fn dyn() -> &'static dyn use<> { &() } + | ^^^ expected identifier, found keyword + | +help: escape `dyn` to use it as an identifier + | +LL | fn r#dyn() -> &'static dyn use<> { &() } + | ++ + +error: `use<...>` precise capturing syntax not allowed in `dyn` trait object bounds + --> $DIR/dyn-use.rs:4:26 + | +LL | fn dyn() -> &'static dyn use<> { &() } + | ^^^^^ + +error[E0224]: at least one trait is required for an object type + --> $DIR/dyn-use.rs:4:22 + | +LL | fn dyn() -> &'static dyn use<> { &() } + | ^^^^^^^^^ + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0224`. diff --git a/tests/ui/impl-trait/precise-capturing/dyn-use.rs b/tests/ui/impl-trait/precise-capturing/dyn-use.rs index fb2f83e2d21..0b6a9467ff7 100644 --- a/tests/ui/impl-trait/precise-capturing/dyn-use.rs +++ b/tests/ui/impl-trait/precise-capturing/dyn-use.rs @@ -1,2 +1,10 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 fn dyn() -> &'static dyn use<> { &() } -//~^ ERROR expected one of `!`, `(`, `::`, `<`, `where`, or `{`, found keyword `use` +//[edition2015]~^ ERROR expected one of `!`, `(`, `::`, `<`, `where`, or `{`, found keyword `use` +//[edition2024]~^^ ERROR expected identifier, found keyword `dyn` +//[edition2024]~| ERROR `use<...>` precise capturing syntax not allowed in `dyn` trait object bounds +//[edition2024]~| ERROR at least one trait is required for an object type + +fn main() {} diff --git a/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.stderr b/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.edition2015.stderr index 0d8fa650df4..c16722bb80f 100644 --- a/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.stderr +++ b/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.edition2015.stderr @@ -1,5 +1,5 @@ error[E0700]: hidden type for `impl Sized` captures lifetime that does not appear in bounds - --> $DIR/hidden-type-suggestion.rs:3:5 + --> $DIR/hidden-type-suggestion.rs:6:5 | LL | fn lifetime<'a, 'b>(x: &'a ()) -> impl Sized + use<'b> { | -- -------------------- opaque type defined here @@ -15,7 +15,7 @@ LL | fn lifetime<'a, 'b>(x: &'a ()) -> impl Sized + use<'b, 'a> { | ++++ error[E0700]: hidden type for `impl Sized` captures lifetime that does not appear in bounds - --> $DIR/hidden-type-suggestion.rs:9:5 + --> $DIR/hidden-type-suggestion.rs:12:5 | LL | fn param<'a, T>(x: &'a ()) -> impl Sized + use<T> { | -- ------------------- opaque type defined here @@ -31,7 +31,7 @@ LL | fn param<'a, T>(x: &'a ()) -> impl Sized + use<'a, T> { | +++ error[E0700]: hidden type for `impl Sized` captures lifetime that does not appear in bounds - --> $DIR/hidden-type-suggestion.rs:15:5 + --> $DIR/hidden-type-suggestion.rs:18:5 | LL | fn empty<'a>(x: &'a ()) -> impl Sized + use<> { | -- ------------------ opaque type defined here @@ -47,7 +47,7 @@ LL | fn empty<'a>(x: &'a ()) -> impl Sized + use<'a> { | ++ error[E0700]: hidden type for `impl Captures<'captured>` captures lifetime that does not appear in bounds - --> $DIR/hidden-type-suggestion.rs:24:5 + --> $DIR/hidden-type-suggestion.rs:27:5 | LL | fn missing<'a, 'captured, 'not_captured, Captured>(x: &'a ()) -> impl Captures<'captured> { | -- ------------------------ opaque type defined here @@ -63,7 +63,7 @@ LL | fn missing<'a, 'captured, 'not_captured, Captured>(x: &'a ()) -> impl Captu | ++++++++++++++++++++++++++++++ error[E0700]: hidden type for `impl Sized` captures lifetime that does not appear in bounds - --> $DIR/hidden-type-suggestion.rs:30:5 + --> $DIR/hidden-type-suggestion.rs:33:5 | LL | fn no_params_yet(_: impl Sized, y: &()) -> impl Sized { | --- ---------- opaque type defined here @@ -74,7 +74,7 @@ LL | y | ^ | note: you could use a `use<...>` bound to explicitly capture `'_`, but argument-position `impl Trait`s are not nameable - --> $DIR/hidden-type-suggestion.rs:28:21 + --> $DIR/hidden-type-suggestion.rs:31:21 | LL | fn no_params_yet(_: impl Sized, y: &()) -> impl Sized { | ^^^^^^^^^^ @@ -85,7 +85,7 @@ LL + fn no_params_yet<T: Sized>(_: T, y: &()) -> impl Sized + use<'_, T> { | error[E0700]: hidden type for `impl Sized` captures lifetime that does not appear in bounds - --> $DIR/hidden-type-suggestion.rs:36:5 + --> $DIR/hidden-type-suggestion.rs:39:5 | LL | fn yes_params_yet<'a, T>(_: impl Sized, y: &'a ()) -> impl Sized { | -- ---------- opaque type defined here @@ -96,7 +96,7 @@ LL | y | ^ | note: you could use a `use<...>` bound to explicitly capture `'a`, but argument-position `impl Trait`s are not nameable - --> $DIR/hidden-type-suggestion.rs:34:29 + --> $DIR/hidden-type-suggestion.rs:37:29 | LL | fn yes_params_yet<'a, T>(_: impl Sized, y: &'a ()) -> impl Sized { | ^^^^^^^^^^ diff --git a/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.edition2024.stderr b/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.edition2024.stderr new file mode 100644 index 00000000000..308dc9b00fc --- /dev/null +++ b/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.edition2024.stderr @@ -0,0 +1,51 @@ +error[E0700]: hidden type for `impl Sized` captures lifetime that does not appear in bounds + --> $DIR/hidden-type-suggestion.rs:6:5 + | +LL | fn lifetime<'a, 'b>(x: &'a ()) -> impl Sized + use<'b> { + | -- -------------------- opaque type defined here + | | + | hidden type `&'a ()` captures the lifetime `'a` as defined here +LL | +LL | x + | ^ + | +help: add `'a` to the `use<...>` bound to explicitly capture it + | +LL | fn lifetime<'a, 'b>(x: &'a ()) -> impl Sized + use<'b, 'a> { + | ++++ + +error[E0700]: hidden type for `impl Sized` captures lifetime that does not appear in bounds + --> $DIR/hidden-type-suggestion.rs:12:5 + | +LL | fn param<'a, T>(x: &'a ()) -> impl Sized + use<T> { + | -- ------------------- opaque type defined here + | | + | hidden type `&'a ()` captures the lifetime `'a` as defined here +LL | +LL | x + | ^ + | +help: add `'a` to the `use<...>` bound to explicitly capture it + | +LL | fn param<'a, T>(x: &'a ()) -> impl Sized + use<'a, T> { + | +++ + +error[E0700]: hidden type for `impl Sized` captures lifetime that does not appear in bounds + --> $DIR/hidden-type-suggestion.rs:18:5 + | +LL | fn empty<'a>(x: &'a ()) -> impl Sized + use<> { + | -- ------------------ opaque type defined here + | | + | hidden type `&'a ()` captures the lifetime `'a` as defined here +LL | +LL | x + | ^ + | +help: add `'a` to the `use<...>` bound to explicitly capture it + | +LL | fn empty<'a>(x: &'a ()) -> impl Sized + use<'a> { + | ++ + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0700`. diff --git a/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.rs b/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.rs index d34c6135596..9712eac859a 100644 --- a/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.rs +++ b/tests/ui/impl-trait/precise-capturing/hidden-type-suggestion.rs @@ -1,3 +1,6 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 fn lifetime<'a, 'b>(x: &'a ()) -> impl Sized + use<'b> { //~^ HELP add `'a` to the `use<...>` bound x @@ -20,21 +23,21 @@ trait Captures<'a> {} impl<T> Captures<'_> for T {} fn missing<'a, 'captured, 'not_captured, Captured>(x: &'a ()) -> impl Captures<'captured> { -//~^ HELP add a `use<...>` bound +//[edition2015]~^ HELP add a `use<...>` bound x -//~^ ERROR hidden type for +//[edition2015]~^ ERROR hidden type for } fn no_params_yet(_: impl Sized, y: &()) -> impl Sized { -//~^ HELP add a `use<...>` bound +//[edition2015]~^ HELP add a `use<...>` bound y -//~^ ERROR hidden type for +//[edition2015]~^ ERROR hidden type for } fn yes_params_yet<'a, T>(_: impl Sized, y: &'a ()) -> impl Sized { -//~^ HELP add a `use<...>` bound +//[edition2015]~^ HELP add a `use<...>` bound y -//~^ ERROR hidden type for +//[edition2015]~^ ERROR hidden type for } fn main() {} diff --git a/tests/ui/imports/import-from-missing-star-2.stderr b/tests/ui/imports/import-from-missing-star-2.edition2015.stderr index 9fe2bdbcfa2..cd1a9581d30 100644 --- a/tests/ui/imports/import-from-missing-star-2.stderr +++ b/tests/ui/imports/import-from-missing-star-2.edition2015.stderr @@ -1,5 +1,5 @@ error[E0432]: unresolved import `spam` - --> $DIR/import-from-missing-star-2.rs:2:9 + --> $DIR/import-from-missing-star-2.rs:6:9 | LL | use spam::*; | ^^^^ use of unresolved module or unlinked crate `spam` diff --git a/tests/ui/imports/import-from-missing-star-2.edition2024.stderr b/tests/ui/imports/import-from-missing-star-2.edition2024.stderr new file mode 100644 index 00000000000..086b7a576b2 --- /dev/null +++ b/tests/ui/imports/import-from-missing-star-2.edition2024.stderr @@ -0,0 +1,11 @@ +error[E0432]: unresolved import `spam` + --> $DIR/import-from-missing-star-2.rs:6:9 + | +LL | use spam::*; + | ^^^^ use of unresolved module or unlinked crate `spam` + | + = help: you might be missing a crate named `spam` + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0432`. diff --git a/tests/ui/imports/import-from-missing-star-2.rs b/tests/ui/imports/import-from-missing-star-2.rs index cb341b0b0ca..9dad2d4886b 100644 --- a/tests/ui/imports/import-from-missing-star-2.rs +++ b/tests/ui/imports/import-from-missing-star-2.rs @@ -1,5 +1,10 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 mod foo { +//[edition2015]~^ HELP you might be missing a crate named `spam`, add it to your project and import it in your code use spam::*; //~ ERROR unresolved import `spam` [E0432] + //[edition2024]~^ HELP you might be missing a crate named `spam` } fn main() { diff --git a/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.stderr b/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.edition2015.stderr index 0bf9dccfad8..4f1e769bc6c 100644 --- a/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.stderr +++ b/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.edition2015.stderr @@ -1,5 +1,5 @@ error[E0700]: hidden type for `impl PlusOne` captures lifetime that does not appear in bounds - --> $DIR/imply_bounds_from_bounds_param.rs:26:5 + --> $DIR/imply_bounds_from_bounds_param.rs:29:5 | LL | fn test<'a>(y: &'a mut i32) -> impl PlusOne { | -- ------------ opaque type defined here diff --git a/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.edition2024.stderr b/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.edition2024.stderr new file mode 100644 index 00000000000..a7135e8f05f --- /dev/null +++ b/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.edition2024.stderr @@ -0,0 +1,91 @@ +error[E0499]: cannot borrow `z` as mutable more than once at a time + --> $DIR/imply_bounds_from_bounds_param.rs:36:27 + | +LL | let mut thing = test(&mut z); + | ------ first mutable borrow occurs here +LL | let mut thing2 = test(&mut z); + | ^^^^^^ second mutable borrow occurs here +LL | thing.plus_one(); + | ----- first borrow later used here + | +note: this call may capture more lifetimes than intended, because Rust 2024 has adjusted the `impl Trait` lifetime capture rules + --> $DIR/imply_bounds_from_bounds_param.rs:35:21 + | +LL | let mut thing = test(&mut z); + | ^^^^^^^^^^^^ +help: use the precise capturing `use<...>` syntax to make the captures explicit + | +LL | fn test<'a>(y: &'a mut i32) -> impl PlusOne + use<> { + | +++++++ + +error[E0502]: cannot borrow `z` as immutable because it is also borrowed as mutable + --> $DIR/imply_bounds_from_bounds_param.rs:38:5 + | +LL | let mut thing = test(&mut z); + | ------ mutable borrow occurs here +... +LL | assert_eq!(z, 43); + | ^^^^^^^^^^^^^^^^^ immutable borrow occurs here +... +LL | thing.plus_one(); + | ----- mutable borrow later used here + | +note: this call may capture more lifetimes than intended, because Rust 2024 has adjusted the `impl Trait` lifetime capture rules + --> $DIR/imply_bounds_from_bounds_param.rs:35:21 + | +LL | let mut thing = test(&mut z); + | ^^^^^^^^^^^^ + = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info) +help: use the precise capturing `use<...>` syntax to make the captures explicit + | +LL | fn test<'a>(y: &'a mut i32) -> impl PlusOne + use<> { + | +++++++ + +error[E0502]: cannot borrow `z` as immutable because it is also borrowed as mutable + --> $DIR/imply_bounds_from_bounds_param.rs:40:5 + | +LL | let mut thing = test(&mut z); + | ------ mutable borrow occurs here +... +LL | assert_eq!(z, 44); + | ^^^^^^^^^^^^^^^^^ immutable borrow occurs here +LL | thing.plus_one(); + | ----- mutable borrow later used here + | +note: this call may capture more lifetimes than intended, because Rust 2024 has adjusted the `impl Trait` lifetime capture rules + --> $DIR/imply_bounds_from_bounds_param.rs:35:21 + | +LL | let mut thing = test(&mut z); + | ^^^^^^^^^^^^ + = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info) +help: use the precise capturing `use<...>` syntax to make the captures explicit + | +LL | fn test<'a>(y: &'a mut i32) -> impl PlusOne + use<> { + | +++++++ + +error[E0502]: cannot borrow `z` as immutable because it is also borrowed as mutable + --> $DIR/imply_bounds_from_bounds_param.rs:42:5 + | +LL | let mut thing = test(&mut z); + | ------ mutable borrow occurs here +... +LL | assert_eq!(z, 45); + | ^^^^^^^^^^^^^^^^^ immutable borrow occurs here +LL | } + | - mutable borrow might be used here, when `thing` is dropped and runs the destructor for type `impl PlusOne` + | +note: this call may capture more lifetimes than intended, because Rust 2024 has adjusted the `impl Trait` lifetime capture rules + --> $DIR/imply_bounds_from_bounds_param.rs:35:21 + | +LL | let mut thing = test(&mut z); + | ^^^^^^^^^^^^ + = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info) +help: use the precise capturing `use<...>` syntax to make the captures explicit + | +LL | fn test<'a>(y: &'a mut i32) -> impl PlusOne + use<> { + | +++++++ + +error: aborting due to 4 previous errors + +Some errors have detailed explanations: E0499, E0502. +For more information about an error, try `rustc --explain E0499`. diff --git a/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.rs b/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.rs index 5d5645077c2..672019ba73a 100644 --- a/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.rs +++ b/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds_param.rs @@ -1,3 +1,6 @@ +//@revisions: edition2015 edition2024 +//@[edition2015] edition:2015 +//@[edition2024] edition:2024 #![feature(impl_trait_in_assoc_type)] trait Callable { @@ -24,17 +27,17 @@ impl<T: PlusOne> Callable for T { fn test<'a>(y: &'a mut i32) -> impl PlusOne { <&'a mut i32 as Callable>::call(y) - //~^ ERROR hidden type for `impl PlusOne` captures lifetime that does not appear in bounds + //[edition2015]~^ ERROR hidden type for `impl PlusOne` captures lifetime that does not appear in bounds } fn main() { let mut z = 42; let mut thing = test(&mut z); - let mut thing2 = test(&mut z); + let mut thing2 = test(&mut z); //[edition2024]~ ERROR cannot borrow `z` as mutable more than once thing.plus_one(); - assert_eq!(z, 43); + assert_eq!(z, 43); //[edition2024]~ ERROR cannot borrow `z` as immutable thing2.plus_one(); - assert_eq!(z, 44); + assert_eq!(z, 44); //[edition2024]~ ERROR cannot borrow `z` as immutable thing.plus_one(); - assert_eq!(z, 45); + assert_eq!(z, 45); //[edition2024]~ ERROR cannot borrow `z` as immutable } |