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//@ revisions: old next
//@ ignore-compare-mode-next-solver (explicit revisions)
//@[next] compile-flags: -Znext-solver
pub trait Scalar: 'static {
type RefType<'a>: ScalarRef<'a>;
}
pub trait ScalarRef<'a>: 'a {}
fn cmp_eq<'a, 'b, A: Scalar, B: Scalar, O: Scalar>(a: A::RefType<'a>, b: B::RefType<'b>) -> O {
todo!()
}
fn build_expression<A: Scalar, B: Scalar, O: Scalar>(
) -> impl Fn(A::RefType<'_>, B::RefType<'_>) -> O {
//[next]~^^ ERROR expected a `Fn(<A as Scalar>::RefType<'_>, <B as Scalar>::RefType<'_>)` closure
cmp_eq
//~^ ERROR type annotations needed
}
fn main() {}
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