diff options
Diffstat (limited to 'tests/ui/nll/ty-outlives/projection-no-regions-fn.rs')
-rw-r--r-- | tests/ui/nll/ty-outlives/projection-no-regions-fn.rs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tests/ui/nll/ty-outlives/projection-no-regions-fn.rs b/tests/ui/nll/ty-outlives/projection-no-regions-fn.rs new file mode 100644 index 000000000..a10a0366a --- /dev/null +++ b/tests/ui/nll/ty-outlives/projection-no-regions-fn.rs @@ -0,0 +1,40 @@ +// compile-flags:-Zverbose + +#![allow(warnings)] + +trait Anything { } + +impl<T> Anything for T { } + +fn no_region<'a, T>(mut x: T) -> Box<dyn Anything + 'a> +where + T: Iterator, +{ + Box::new(x.next()) + //~^ ERROR the associated type `<T as Iterator>::Item` may not live long enough +} + +fn correct_region<'a, T>(mut x: T) -> Box<dyn Anything + 'a> +where + T: 'a + Iterator, +{ + Box::new(x.next()) +} + +fn wrong_region<'a, 'b, T>(mut x: T) -> Box<dyn Anything + 'a> +where + T: 'b + Iterator, +{ + Box::new(x.next()) + //~^ ERROR the associated type `<T as Iterator>::Item` may not live long enough +} + +fn outlives_region<'a, 'b, T>(mut x: T) -> Box<dyn Anything + 'a> +where + T: 'b + Iterator, + 'b: 'a, +{ + Box::new(x.next()) +} + +fn main() {} |