| #![feature(rustc_attrs)] |
| #![allow(dead_code)] |
| fn main() { #![rustc_error] // rust-lang/rust#49855 |
| // Original borrow ends at end of function |
| let mut x = 1; |
| let y = &mut x; |
| //~^ mutable borrow occurs here |
| let z = &x; //~ ERROR cannot borrow |
| //~^ immutable borrow occurs here |
| z.use_ref(); |
| y.use_mut(); |
| } |
| |
| fn foo() { |
| match true { |
| true => { |
| // Original borrow ends at end of match arm |
| let mut x = 1; |
| let y = &x; |
| //~^ immutable borrow occurs here |
| let z = &mut x; //~ ERROR cannot borrow |
| //~^ mutable borrow occurs here |
| z.use_mut(); |
| y.use_ref(); |
| } |
| false => () |
| } |
| } |
| |
| fn bar() { |
| // Original borrow ends at end of closure |
| || { |
| let mut x = 1; |
| let y = &mut x; |
| //~^ first mutable borrow occurs here |
| let z = &mut x; //~ ERROR cannot borrow |
| //~^ second mutable borrow occurs here |
| z.use_mut(); |
| y.use_mut(); |
| }; |
| } |
| |
| trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } } |
| impl<T> Fake for T { } |