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#![feature(type_alias_impl_trait)]
type Foo = impl for<'a> FnOnce(&'a str) -> usize;
type Bar = impl FnOnce(&'static str) -> usize;
#[define_opaque(Foo)]
fn foo() -> Foo {
if true {
|s| s.len() //~ ERROR type annotations needed
} else {
panic!()
}
}
#[define_opaque(Bar)]
fn bar() -> Bar {
if true {
|s| s.len() //~ ERROR type annotations needed
} else {
panic!()
}
}
fn foo2() -> impl for<'a> FnOnce(&'a str) -> usize {
if true {
|s| s.len() //~ ERROR type annotations needed
} else {
panic!()
}
}
fn bar2() -> impl FnOnce(&'static str) -> usize {
if true {
|s| s.len() //~ ERROR type annotations needed
} else {
panic!()
}
}
fn main() {}
|
