| // ensure borrowck messages are correct outside special case |
| #![feature(rustc_attrs)] |
| fn main() { #![rustc_error] // rust-lang/rust#49855 |
| let mut void = (); |
| |
| let first = &mut void; |
| let second = &mut void; //~ ERROR cannot borrow |
| first.use_mut(); |
| second.use_mut(); |
| |
| loop { |
| let mut inner_void = (); |
| |
| let inner_first = &mut inner_void; |
| let inner_second = &mut inner_void; //~ ERROR cannot borrow |
| inner_second.use_mut(); |
| inner_first.use_mut(); |
| } |
| } |
| |
| trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } } |
| impl<T> Fake for T { } |