downcasting via the `Any` trait is effectively limited to
concrete types. This helps retain the potentially-important
"parametricity" property: generic code cannot behave differently
- for different type arguments.
+ for different type arguments except in minor ways.
* The `unsafe_destructor` feature is now deprecated in favor of
the [new `dropck`][dropck]. This change is a major reduction in
unsafe code.
[scoped]: http://static.rust-lang.org/doc/master/std/thread/fn.scoped.html
[moar-ufcs]: https://github.com/rust-lang/rust/pull/22172
[prim-inherent]: https://github.com/rust-lang/rust/pull/23104
-[overflow]: https://github.com/rust-lang/rust/pull/22532
+[overflow]: https://github.com/rust-lang/rfcs/blob/master/text/0560-integer-overflow.md
[metadata-shrink]: https://github.com/rust-lang/rust/pull/22971
[self-sized]: https://github.com/rust-lang/rust/pull/22301
[assoc-where]: https://github.com/rust-lang/rust/pull/22512