diff options
Diffstat (limited to 'tests/ui/const_prop/issue-102553.rs')
-rw-r--r-- | tests/ui/const_prop/issue-102553.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tests/ui/const_prop/issue-102553.rs b/tests/ui/const_prop/issue-102553.rs new file mode 100644 index 000000000..523a9d7ac --- /dev/null +++ b/tests/ui/const_prop/issue-102553.rs @@ -0,0 +1,24 @@ +// compile-flags: --crate-type=lib +// check-pass + +pub trait Widget<E> { + fn boxed<'w>(self) -> Box<dyn WidgetDyn<E> + 'w> + where + Self: Sized + 'w; +} + +pub trait WidgetDyn<E> {} + +impl<T, E> WidgetDyn<E> for T where T: Widget<E> {} + +impl<E> Widget<E> for dyn WidgetDyn<E> + '_ { + fn boxed<'w>(self) -> Box<dyn WidgetDyn<E> + 'w> + where + Self: Sized + 'w, + { + // Even though this is illegal to const evaluate, this should never + // trigger an ICE because it can never be called from actual code + // (due to the trivially false where-clause predicate). + Box::new(self) + } +} |