| //@ run-pass |
| #![allow(dead_code)] |
| // Test that `&PrinterSupport`, which is really short for `&'a |
| // PrinterSupport<'b>`, gets properly expanded when it appears in a |
| // closure type. This used to result in messed up De Bruijn indices. |
| |
| |
| trait PrinterSupport<'ast> { |
| fn ast_map(&self) -> Option<&'ast usize> { None } |
| } |
| |
| struct NoAnn<'ast> { |
| f: Option<&'ast usize> |
| } |
| |
| impl<'ast> PrinterSupport<'ast> for NoAnn<'ast> { |
| } |
| |
| fn foo<'ast, G>(f: Option<&'ast usize>, g: G) where G: FnOnce(&dyn PrinterSupport) { |
| let annotation = NoAnn { f: f }; |
| g(&annotation) |
| } |
| |
| fn main() {} |
