| //@ revisions: edition2015 edition2018 |
| //@[edition2015] check-pass |
| //@[edition2015] edition: 2015 |
| //@[edition2018] run-rustfix |
| //@[edition2018] edition: 2018 |
| |
| #![deny(unused_parens)] |
| |
| #[allow(unused)] |
| macro_rules! edition2015_only { |
| () => { |
| mod dyn { |
| pub type IsAContextualKeywordIn2015 = (); |
| } |
| |
| pub type DynIsAContextualKeywordIn2015A = dyn::IsAContextualKeywordIn2015; |
| } |
| } |
| |
| #[cfg(edition2015)] |
| edition2015_only!(); |
| |
| // there's a lint for 2018 and later only because of how dyn is parsed in edition 2015 |
| //[edition2018]~v ERROR unnecessary parentheses around type |
| pub type DynIsAContextualKeywordIn2015B = Box<dyn (::std::ops::Fn())>; |
| |
| fn main() {} |
