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Test tait use in a fn type

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Santiago Pastorino 2021-08-20 18:32:57 -03:00
parent a9ab2e5539
commit c6c2f11ab6
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13
src/test/ui/type-alias-impl-trait/type-alias-impl-trait-fn-type.rs Normal file
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#![feature(type_alias_impl_trait)]
#![allow(dead_code)]
// FIXME: this is ruled out for now but should work
type Foo = fn() -> impl Send;
//~^ ERROR: `impl Trait` not allowed outside of function and method return types
fn make_foo() -> Foo {
|| 15
}
fn main() {}

9
src/test/ui/type-alias-impl-trait/type-alias-impl-trait-fn-type.stderr Normal file
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error[E0562]: `impl Trait` not allowed outside of function and method return types
--> $DIR/type-alias-impl-trait-fn-type.rs:6:20
|
LL | type Foo = fn() -> impl Send;
| ^^^^^^^^^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0562`.