// Tests that a closure which mutates a local variable | |
// cannot also be supplied a borrowed version of that | |
// variable's contents. Issue #11192. | |
#![feature(box_syntax)] | |
struct Foo { | |
x: isize | |
} | |
impl Drop for Foo { | |
fn drop(&mut self) { | |
println!("drop {}", self.x); | |
} | |
} | |
fn main() { | |
let mut ptr: Box<_> = box Foo { x: 0 }; | |
let mut test = |foo: &Foo| { | |
ptr = box Foo { x: ptr.x + 1 }; | |
}; | |
test(&*ptr); //~ ERROR cannot borrow `*ptr` | |
} |