diff options
Diffstat (limited to 'tests/ui/regions/init-res-into-things.rs')
-rw-r--r-- | tests/ui/regions/init-res-into-things.rs | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/tests/ui/regions/init-res-into-things.rs b/tests/ui/regions/init-res-into-things.rs new file mode 100644 index 000000000..7f416262d --- /dev/null +++ b/tests/ui/regions/init-res-into-things.rs @@ -0,0 +1,81 @@ +// run-pass + +#![allow(non_camel_case_types)] +#![allow(dead_code)] + +use std::cell::Cell; + +// Resources can't be copied, but storing into data structures counts +// as a move unless the stored thing is used afterwards. + +struct r<'a> { + i: &'a Cell<isize>, +} + +struct BoxR<'a> { x: r<'a> } + +impl<'a> Drop for r<'a> { + fn drop(&mut self) { + self.i.set(self.i.get() + 1) + } +} + +fn r(i: &Cell<isize>) -> r { + r { + i: i + } +} + +fn test_rec() { + let i = &Cell::new(0); + { + let _a = BoxR {x: r(i)}; + } + assert_eq!(i.get(), 1); +} + +fn test_tag() { + enum t<'a> { + t0(r<'a>), + } + + let i = &Cell::new(0); + { + let _a = t::t0(r(i)); + } + assert_eq!(i.get(), 1); +} + +fn test_tup() { + let i = &Cell::new(0); + { + let _a = (r(i), 0); + } + assert_eq!(i.get(), 1); +} + +fn test_unique() { + let i = &Cell::new(0); + { + let _a: Box<_> = Box::new(r(i)); + } + assert_eq!(i.get(), 1); +} + +fn test_unique_rec() { + let i = &Cell::new(0); + { + let _a: Box<_> = Box::new(BoxR { + x: r(i) + }); + } + assert_eq!(i.get(), 1); +} + +pub fn main() { + test_rec(); + test_tag(); + test_tup(); + test_unique(); + test_unique_rec(); +} |