1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/generic-associated-types/issue-91139.rs b/tests/ui/generic-associated-types/issue-91139.rs
new file mode 100644
index 000000000..adc0cb4e0
--- /dev/null
+++ b/tests/ui/generic-associated-types/issue-91139.rs
@@ -0,0 +1,27 @@
+trait Foo<T> {
+    type Type<'a>
+    where
+        T: 'a;
+}
+
+impl<T> Foo<T> for () {
+    type Type<'a> = ()
+    where
+        T: 'a;
+}
+
+fn foo<T>() {
+    let _: for<'a> fn(<() as Foo<T>>::Type<'a>, &'a T) = |_, _| ();
+    //~^ ERROR `T` does not live long enough
+    //~| ERROR `T` does not live long enough
+    //
+    // FIXME: This error is bogus, but it arises because we try to validate
+    // that `<() as Foo<T>>::Type<'a>` is valid, which requires proving
+    // that `T: 'a`. Since `'a` is higher-ranked, this becomes
+    // `for<'a> T: 'a`, which is not true. Of course, the error is bogus
+    // because there *ought* to be an implied bound stating that `'a` is
+    // not any lifetime but specifically
+    // "some `'a` such that `<() as Foo<T>>::Type<'a>" is valid".
+}
+
+pub fn main() {}