1 files changed, 55 insertions, 0 deletions
diff --git a/src/test/ui/generic-associated-types/issue-93341.rs b/src/test/ui/generic-associated-types/issue-93341.rs
new file mode 100644
index 000000000..e96a768ec
--- /dev/null
+++ b/src/test/ui/generic-associated-types/issue-93341.rs
@@ -0,0 +1,55 @@
+// check-pass
+
+#![feature(generic_associated_types)]
+use std::marker::PhantomData;
+
+pub struct Id<'id>(PhantomData<fn(&'id ()) -> &'id ()>);
+
+fn new_id() -> Id<'static> {
+    Id(PhantomData)
+}
+
+pub trait HasLifetime where {
+    type AtLifetime<'a>;
+}
+
+pub struct ExistentialLifetime<S: HasLifetime>(S::AtLifetime<'static>);
+
+impl<S: HasLifetime> ExistentialLifetime<S> {
+    pub fn new<F>(f: F) -> ExistentialLifetime<S>
+        where for<'id> F: FnOnce(Id<'id>) -> S::AtLifetime<'id> {
+        ExistentialLifetime(f(new_id()))
+    }
+}
+
+
+struct ExampleS<'id>(Id<'id>);
+
+struct ExampleMarker;
+
+impl HasLifetime for ExampleMarker {
+    type AtLifetime<'id> = ExampleS<'id>;
+}
+
+
+fn broken0() -> ExistentialLifetime<ExampleMarker> {
+    fn new_helper<'id>(id: Id<'id>) -> ExampleS<'id> {
+        ExampleS(id)
+    }
+
+    ExistentialLifetime::<ExampleMarker>::new(new_helper)
+}
+
+fn broken1() -> ExistentialLifetime<ExampleMarker> {
+    fn new_helper<'id>(id: Id<'id>) -> <ExampleMarker as HasLifetime>::AtLifetime<'id> {
+        ExampleS(id)
+    }
+
+    ExistentialLifetime::<ExampleMarker>::new(new_helper)
+}
+
+fn broken2() -> ExistentialLifetime<ExampleMarker> {
+    ExistentialLifetime::<ExampleMarker>::new(|id| ExampleS(id))
+}
+
+fn main() {}