src/test/ui/type-alias-impl-trait/unused_generic_param.rs

#![feature(type_alias_impl_trait)]

fn main() {
}

type PartiallyDefined<T> = impl 'static;
//~^ ERROR: at least one trait must be specified

fn partially_defined<T: std::fmt::Debug>(_: T) -> PartiallyDefined<T> {
    4u32
}

type PartiallyDefined2<T> = impl 'static;
//~^ ERROR: at least one trait must be specified

fn partially_defined2<T: std::fmt::Debug>(_: T) -> PartiallyDefined2<T> {
    4u32
}

fn partially_defined22<T>(_: T) -> PartiallyDefined2<T> {
    4u32
}