317 lines
14 KiB
Plaintext
317 lines
14 KiB
Plaintext
error[E0666]: nested `impl Trait` is not allowed
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--> $DIR/where-allowed.rs:49:51
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LL | fn in_impl_Fn_parameter_in_parameters(_: &impl Fn(impl Debug)) { panic!() }
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| --------^^^^^^^^^^-
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| | |
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| | nested `impl Trait` here
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| outer `impl Trait`
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error[E0666]: nested `impl Trait` is not allowed
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--> $DIR/where-allowed.rs:58:57
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LL | fn in_impl_Fn_parameter_in_return() -> &'static impl Fn(impl Debug) { panic!() }
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| --------^^^^^^^^^^-
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| | |
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| | nested `impl Trait` here
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| outer `impl Trait`
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error[E0658]: `impl Trait` in associated types is unstable
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--> $DIR/where-allowed.rs:120:16
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LL | type Out = impl Debug;
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| ^^^^^^^^^^
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= note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
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= help: add `#![feature(impl_trait_in_assoc_type)]` to the crate attributes to enable
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error[E0658]: `impl Trait` in type aliases is unstable
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--> $DIR/where-allowed.rs:155:23
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LL | type InTypeAlias<R> = impl Debug;
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| ^^^^^^^^^^
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= note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
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= help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable
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error[E0658]: `impl Trait` in type aliases is unstable
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--> $DIR/where-allowed.rs:158:39
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LL | type InReturnInTypeAlias<R> = fn() -> impl Debug;
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| ^^^^^^^^^^
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= note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
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= help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `fn` pointer params
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--> $DIR/where-allowed.rs:18:40
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LL | fn in_fn_parameter_in_parameters(_: fn(impl Debug)) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `fn` pointer return types
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--> $DIR/where-allowed.rs:22:42
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LL | fn in_fn_return_in_parameters(_: fn() -> impl Debug) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `fn` pointer params
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--> $DIR/where-allowed.rs:26:38
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LL | fn in_fn_parameter_in_return() -> fn(impl Debug) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `fn` pointer return types
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--> $DIR/where-allowed.rs:30:40
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LL | fn in_fn_return_in_return() -> fn() -> impl Debug { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait params
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--> $DIR/where-allowed.rs:34:49
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LL | fn in_dyn_Fn_parameter_in_parameters(_: &dyn Fn(impl Debug)) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait return types
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--> $DIR/where-allowed.rs:38:51
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LL | fn in_dyn_Fn_return_in_parameters(_: &dyn Fn() -> impl Debug) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait params
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--> $DIR/where-allowed.rs:42:55
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LL | fn in_dyn_Fn_parameter_in_return() -> &'static dyn Fn(impl Debug) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait params
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--> $DIR/where-allowed.rs:49:51
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LL | fn in_impl_Fn_parameter_in_parameters(_: &impl Fn(impl Debug)) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait return types
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--> $DIR/where-allowed.rs:54:53
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LL | fn in_impl_Fn_return_in_parameters(_: &impl Fn() -> impl Debug) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait params
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--> $DIR/where-allowed.rs:58:57
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LL | fn in_impl_Fn_parameter_in_return() -> &'static impl Fn(impl Debug) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait params
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--> $DIR/where-allowed.rs:66:38
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LL | fn in_Fn_parameter_in_generics<F: Fn(impl Debug)> (_: F) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait return types
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--> $DIR/where-allowed.rs:70:40
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LL | fn in_Fn_return_in_generics<F: Fn() -> impl Debug> (_: F) { panic!() }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in field types
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--> $DIR/where-allowed.rs:83:32
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LL | struct InBraceStructField { x: impl Debug }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in field types
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--> $DIR/where-allowed.rs:87:41
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LL | struct InAdtInBraceStructField { x: Vec<impl Debug> }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in field types
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--> $DIR/where-allowed.rs:91:27
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LL | struct InTupleStructField(impl Debug);
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in field types
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--> $DIR/where-allowed.rs:96:25
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LL | InBraceVariant { x: impl Debug },
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in field types
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--> $DIR/where-allowed.rs:98:20
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LL | InTupleVariant(impl Debug),
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in trait method return types
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--> $DIR/where-allowed.rs:109:23
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LL | fn in_return() -> impl Debug;
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| ^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
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= help: add `#![feature(return_position_impl_trait_in_trait)]` to the crate attributes to enable
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `impl` method return types
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--> $DIR/where-allowed.rs:126:34
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LL | fn in_trait_impl_return() -> impl Debug { () }
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| ^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
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= help: add `#![feature(return_position_impl_trait_in_trait)]` to the crate attributes to enable
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `extern fn` params
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--> $DIR/where-allowed.rs:139:33
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LL | fn in_foreign_parameters(_: impl Debug);
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `extern fn` return types
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--> $DIR/where-allowed.rs:142:31
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LL | fn in_foreign_return() -> impl Debug;
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `fn` pointer return types
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--> $DIR/where-allowed.rs:158:39
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LL | type InReturnInTypeAlias<R> = fn() -> impl Debug;
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in traits
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--> $DIR/where-allowed.rs:163:16
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LL | impl PartialEq<impl Debug> for () {
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in impl headers
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--> $DIR/where-allowed.rs:168:24
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LL | impl PartialEq<()> for impl Debug {
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in impl headers
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--> $DIR/where-allowed.rs:173:6
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LL | impl impl Debug {
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in impl headers
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--> $DIR/where-allowed.rs:179:24
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LL | impl InInherentImplAdt<impl Debug> {
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in bounds
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--> $DIR/where-allowed.rs:185:11
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LL | where impl Debug: Debug
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in bounds
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--> $DIR/where-allowed.rs:192:15
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LL | where Vec<impl Debug>: Debug
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in bounds
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--> $DIR/where-allowed.rs:199:24
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LL | where T: PartialEq<impl Debug>
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait params
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--> $DIR/where-allowed.rs:206:17
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LL | where T: Fn(impl Debug)
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in `Fn` trait return types
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--> $DIR/where-allowed.rs:213:22
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LL | where T: Fn() -> impl Debug
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in generic parameter defaults
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--> $DIR/where-allowed.rs:219:40
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LL | struct InStructGenericParamDefault<T = impl Debug>(T);
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in generic parameter defaults
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--> $DIR/where-allowed.rs:223:36
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LL | enum InEnumGenericParamDefault<T = impl Debug> { Variant(T) }
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in generic parameter defaults
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--> $DIR/where-allowed.rs:227:38
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LL | trait InTraitGenericParamDefault<T = impl Debug> {}
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in generic parameter defaults
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--> $DIR/where-allowed.rs:231:41
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LL | type InTypeAliasGenericParamDefault<T = impl Debug> = T;
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in generic parameter defaults
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--> $DIR/where-allowed.rs:235:11
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LL | impl <T = impl Debug> T {}
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in generic parameter defaults
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--> $DIR/where-allowed.rs:242:40
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LL | fn in_method_generic_param_default<T = impl Debug>(_: T) {}
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| ^^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in variable bindings
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--> $DIR/where-allowed.rs:248:29
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LL | let _in_local_variable: impl Fn() = || {};
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| ^^^^^^^^^
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error[E0562]: `impl Trait` only allowed in function and inherent method argument and return types, not in closure return types
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--> $DIR/where-allowed.rs:250:46
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LL | let _in_return_in_local_variable = || -> impl Fn() { || {} };
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| ^^^^^^^^^
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error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions
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--> $DIR/where-allowed.rs:235:7
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LL | impl <T = impl Debug> T {}
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| ^^^^^^^^^^^^^^
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #36887 <https://github.com/rust-lang/rust/issues/36887>
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= note: `#[deny(invalid_type_param_default)]` on by default
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error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions
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--> $DIR/where-allowed.rs:242:36
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LL | fn in_method_generic_param_default<T = impl Debug>(_: T) {}
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| ^^^^^^^^^^^^^^
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #36887 <https://github.com/rust-lang/rust/issues/36887>
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error[E0118]: no nominal type found for inherent implementation
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--> $DIR/where-allowed.rs:235:1
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LL | impl <T = impl Debug> T {}
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| ^^^^^^^^^^^^^^^^^^^^^^^ impl requires a nominal type
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= note: either implement a trait on it or create a newtype to wrap it instead
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error: aborting due to 47 previous errors
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Some errors have detailed explanations: E0118, E0562, E0658, E0666.
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For more information about an error, try `rustc --explain E0118`.
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