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// Note: the borrowck analysis is currently flow-insensitive.
// Therefore, some of these errors are marked as spurious and could be
// corrected by a simple change to the analysis. The others are
// either genuine or would require more advanced changes. The latter
// cases are noted.
fn borrow(_v: &isize) {}
fn borrow_mut(_v: &mut isize) {}
fn cond() -> bool { panic!() }
fn for_func<F>(_f: F) where F: FnOnce() -> bool { panic!() }
fn produce<T>() -> T { panic!(); }
fn inc(v: &mut Box<isize>) {
*v = Box::new(**v + 1);
}
fn pre_freeze() {
// In this instance, the freeze starts before the mut borrow.
let mut v: Box<_> = Box::new(3);
let _w = &v;
borrow_mut(&mut *v); //~ ERROR cannot borrow
_w.use_ref();
}
fn post_freeze() {
// In this instance, the const alias starts after the borrow.
let mut v: Box<_> = Box::new(3);
borrow_mut(&mut *v);
let _w = &v;
}
fn main() {}
trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } }
impl<T> Fake for T { }
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