| //! Regression test for https://github.com/rust-lang/rust/issues/153198 | |
| #![feature(min_generic_const_args)] | |
| #![allow(incomplete_features, rust_2021_compatibility)] | |
| trait Trait<T> {} | |
| impl dyn Trait<{_}> {} //~ ERROR: the placeholder `_` is not allowed within types on item signatures | |
| fn main() {} |