rust/src/test/ui/issues/issue-4335.rs
Matthew Jasper 1d53e43744 Simplify mem_categorization
* `Place` is no longer recursive.
* The `cmt` type alias is removed
* `Upvar` places no longer include the dereferences of the environment
  closure or of by reference captures.
* All non-dereference projections are combined to a single variant.
* Various unnecessary types and methods have been removed.
2019-11-27 19:47:12 +00:00

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Rust

#![feature(fn_traits)]
fn id<T>(t: T) -> T { t }
fn f<'r, T>(v: &'r T) -> Box<dyn FnMut() -> T + 'r> {
id(Box::new(|| *v))
//~^ ERROR E0507
}
fn main() {
let v = &5;
println!("{}", f(v).call_mut(()));
}