}
}
Reservation(WriteKind::Move)
+ | Write(WriteKind::Move)
| Reservation(WriteKind::StorageDeadOrDrop)
| Reservation(WriteKind::MutableBorrow(BorrowKind::Shared))
- | Write(WriteKind::Move)
| Write(WriteKind::StorageDeadOrDrop)
| Write(WriteKind::MutableBorrow(BorrowKind::Shared)) => {
if let Err(_place_err) = self.is_mutable(place, is_local_mutation_allowed) {
// mutated, then it is justified to be annotated with the `mut`
// keyword, since the mutation may be a possible reassignment.
let mpi = self.move_data.rev_lookup.find_local(*local);
- if flow_state.inits.contains(&mpi) {
- self.used_mut.insert(*local);
+ let ii = &self.move_data.init_path_map[mpi];
+ for index in ii {
+ if flow_state.ever_inits.contains(index) {
+ self.used_mut.insert(*local);
+ }
}
}
}
--- /dev/null
+// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(nll)]
+#![deny(unused_mut)]
+
+struct Foo {
+ pub value: i32
+}
+
+fn use_foo_mut(mut foo: Foo) {
+ foo = foo;
+ println!("{}", foo.value);
+}
+
+fn main() {
+ use_foo_mut(Foo { value: 413 });
+}