// Issue 52985: user code provides no use case that allows a type alias `impl Trait` | |
// We now emit a 'could not find defining uses' error | |
#![feature(type_alias_impl_trait)] | |
type Foo = impl Copy; //~ could not find defining uses | |
// make compiler happy about using 'Foo' | |
fn bar(x: Foo) -> Foo { x } | |
fn main() { | |
let _: Foo = std::mem::transmute(0u8); | |
} |