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#![feature(type_alias_impl_trait)]
type Foo = impl std::fmt::Debug;
#[define_opaque(Foo)]
fn foo(b: bool) -> Foo {
if b {
return 42;
}
let x: u32 = foo(false) + 42; //~ ERROR cannot add
99
}
fn bar(b: bool) -> impl std::fmt::Debug {
if b {
return 42;
}
let x: u32 = bar(false) + 42; //~ ERROR cannot add
99
}
fn main() {}
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