diff options
Diffstat (limited to 'src/test/ui/borrowck/two-phase-across-loop.rs')
-rw-r--r-- | src/test/ui/borrowck/two-phase-across-loop.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/two-phase-across-loop.rs b/src/test/ui/borrowck/two-phase-across-loop.rs new file mode 100644 index 000000000..3fcea7d17 --- /dev/null +++ b/src/test/ui/borrowck/two-phase-across-loop.rs @@ -0,0 +1,22 @@ +// Test that a borrow which starts as a two-phase borrow and gets +// carried around a loop winds up conflicting with itself. + +struct Foo { x: String } + +impl Foo { + fn get_string(&mut self) -> &str { + &self.x + } +} + +fn main() { + let mut foo = Foo { x: format!("Hello, world") }; + let mut strings = vec![]; + + loop { + strings.push(foo.get_string()); //~ ERROR cannot borrow `foo` as mutable + if strings.len() > 2 { break; } + } + + println!("{:?}", strings); +} |