1 // check that panics in destructors during assignment do not leave
2 // destroyed values lying around for other destructors to observe.
4 // error-pattern:panicking destructors ftw!
6 struct Observer<'a>(&'a mut FilledOnDrop);
8 struct FilledOnDrop(u32);
9 impl Drop for FilledOnDrop {
12 // this is only set during the destructor - safe
13 // code should not be able to observe this.
15 panic!("panicking destructors ftw!");
20 impl<'a> Drop for Observer<'a> {
22 assert_eq!(self.0 .0, 1);
26 fn foo(b: &mut Observer) {
27 *b.0 = FilledOnDrop(1);
31 let mut bomb = FilledOnDrop(0);
32 let mut observer = Observer(&mut bomb);