diff options
Diffstat (limited to '')
-rw-r--r-- | src/test/ui/generic-associated-types/trait-objects.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/generic-associated-types/trait-objects.rs b/src/test/ui/generic-associated-types/trait-objects.rs new file mode 100644 index 000000000..c1da1e0a3 --- /dev/null +++ b/src/test/ui/generic-associated-types/trait-objects.rs @@ -0,0 +1,20 @@ +// revisions: base extended + +#![feature(generic_associated_types)] +#![cfg_attr(extended, feature(generic_associated_types_extended))] +#![cfg_attr(extended, allow(incomplete_features))] + +trait StreamingIterator { + type Item<'a> where Self: 'a; + fn size_hint(&self) -> (usize, Option<usize>); + // Uncommenting makes `StreamingIterator` not object safe +// fn next(&mut self) -> Self::Item<'_>; +} + +fn min_size(x: &mut dyn for<'a> StreamingIterator<Item<'a> = &'a i32>) -> usize { + //[base]~^ the trait `StreamingIterator` cannot be made into an object + x.size_hint().0 + //[extended]~^ borrowed data escapes +} + +fn main() {} |