1 files changed, 40 insertions, 0 deletions
diff --git a/src/test/ui/generic-associated-types/bugs/hrtb-implied-2.rs b/src/test/ui/generic-associated-types/bugs/hrtb-implied-2.rs
new file mode 100644
index 000000000..8e6c5348e
--- /dev/null
+++ b/src/test/ui/generic-associated-types/bugs/hrtb-implied-2.rs
@@ -0,0 +1,40 @@
+// check-fail
+// known-bug
+
+// This gives us problems because `for<'a> I::Item<'a>: Debug` should mean "for
+// all 'a where I::Item<'a> is WF", but really means "for all 'a possible"
+
+trait LendingIterator: Sized {
+    type Item<'a>
+    where
+        Self: 'a;
+    fn next(&mut self) -> Self::Item<'_>;
+}
+fn fails<I: LendingIterator, F>(iter: &mut I, f: F) -> bool
+where
+    F: FnMut(I::Item<'_>),
+{
+    let mut iter2 = Eat(iter, f);
+    let _next = iter2.next();
+    //~^ borrowed data escapes
+    true
+}
+impl<I: LendingIterator> LendingIterator for &mut I {
+    type Item<'a> = I::Item<'a> where Self:'a;
+    fn next(&mut self) -> Self::Item<'_> {
+        (**self).next()
+    }
+}
+
+struct Eat<I, F>(I, F);
+impl<I: LendingIterator, F> Iterator for Eat<I, F>
+where
+    F: FnMut(I::Item<'_>),
+{
+    type Item = ();
+    fn next(&mut self) -> Option<Self::Item> {
+        None
+    }
+}
+
+fn main() {}