Post #865963

Always nice when a "bug" that you couldn't quite put your finger on turns out to be an elementary mistake in your model of how things worked. (Of course you're going to get a double-free if you explicitly delete all of a widget's resources by reaching through a shared pointer with a refcount greater than 1. The old C code didn't care if there were dangling pointers, but Rust will run the Drop impl a second time after the last Rc is destroyed...)