//@ known-bug: #120016 //@ compile-flags: -Zcrate-attr=feature(const_async_blocks) --edition=2021 #![feature(type_alias_impl_trait, const_async_blocks)] struct Bug { V1: [(); { type F = impl std::future::Future; fn concrete_use() -> F { //~^ ERROR to be a future that resolves to `u8`, but it resolves to `()` async {} } let f: F = async { 1 }; //~^ ERROR `async` blocks are not allowed in constants 1 }], } fn main() {}