diff options
Diffstat (limited to 'src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-90612.rs')
-rw-r--r-- | src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-90612.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-90612.rs b/src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-90612.rs new file mode 100644 index 000000000..e150ecfe9 --- /dev/null +++ b/src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-90612.rs @@ -0,0 +1,43 @@ +// check-pass + +#![feature(generic_associated_types)] + +use std::marker::PhantomData; + +trait Family: Sized { + type Item<'a>; + + fn apply_all<F>(&self, f: F) + where + F: FamilyItemFn<Self> { } +} + +struct Array<T>(PhantomData<T>); + +impl<T: 'static> Family for Array<T> { + type Item<'a> = &'a T; +} + +trait FamilyItemFn<T: Family> { + fn apply(&self, item: T::Item<'_>); +} + +impl<T, F> FamilyItemFn<T> for F +where + T: Family, + for<'a> F: Fn(T::Item<'a>) +{ + fn apply(&self, item: T::Item<'_>) { + (*self)(item); + } +} + +fn process<T: 'static>(array: Array<T>) { + // Works + array.apply_all(|x: &T| { }); + + // ICE: NoSolution + array.apply_all(|x: <Array<T> as Family>::Item<'_>| { }); +} + +fn main() {} |