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// edition:2018
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#![feature(impl_trait_in_bindings)]
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//~^ WARN the feature `impl_trait_in_bindings` is incomplete
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struct Bug {
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V1: [(); {
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let f: impl core::future::Future<Output = u8> = async { 1 };
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//~^ ERROR `async` blocks are not allowed in constants
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//~| ERROR destructors cannot be evaluated at compile-time
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1
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}],
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}
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fn main() {}
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warning: the feature `impl_trait_in_bindings` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/issue-78721.rs:3:12
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LL | #![feature(impl_trait_in_bindings)]
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| ^^^^^^^^^^^^^^^^^^^^^^
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= note: `#[warn(incomplete_features)]` on by default
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= note: see issue #63065 <https://github.com/rust-lang/rust/issues/63065> for more information
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error: `async` blocks are not allowed in constants
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--> $DIR/issue-78721.rs:8:57
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LL | let f: impl core::future::Future<Output = u8> = async { 1 };
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| ^^^^^^^^^^^
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error[E0493]: destructors cannot be evaluated at compile-time
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--> $DIR/issue-78721.rs:8:13
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LL | let f: impl core::future::Future<Output = u8> = async { 1 };
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| ^ constants cannot evaluate destructors
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...
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LL | }],
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| - value is dropped here
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error: aborting due to 2 previous errors; 1 warning emitted
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For more information about this error, try `rustc --explain E0493`.
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// edition:2018
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#![feature(type_alias_impl_trait)]
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#![feature(impl_trait_in_bindings)]
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//~^ WARN the feature `impl_trait_in_bindings` is incomplete
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type F = impl core::future::Future<Output = u8>;
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struct Bug {
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V1: [(); {
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fn concrete_use() -> F {
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async {}
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}
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let f: F = async { 1 };
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//~^ ERROR `async` blocks are not allowed in constants
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//~| ERROR destructors cannot be evaluated at compile-time
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1
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}],
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}
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fn main() {}
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warning: the feature `impl_trait_in_bindings` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/issue-78722.rs:4:12
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LL | #![feature(impl_trait_in_bindings)]
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| ^^^^^^^^^^^^^^^^^^^^^^
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= note: `#[warn(incomplete_features)]` on by default
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= note: see issue #63065 <https://github.com/rust-lang/rust/issues/63065> for more information
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error: `async` blocks are not allowed in constants
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--> $DIR/issue-78722.rs:14:20
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LL | let f: F = async { 1 };
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| ^^^^^^^^^^^
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error[E0493]: destructors cannot be evaluated at compile-time
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--> $DIR/issue-78722.rs:14:13
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LL | let f: F = async { 1 };
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| ^ constants cannot evaluate destructors
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...
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LL | }],
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| - value is dropped here
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error: aborting due to 2 previous errors; 1 warning emitted
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For more information about this error, try `rustc --explain E0493`.
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