1 files changed, 14 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-37884.rs b/tests/ui/issues/issue-37884.rs
new file mode 100644
index 000000000..ee37481b2
--- /dev/null
+++ b/tests/ui/issues/issue-37884.rs
@@ -0,0 +1,14 @@
+struct RepeatMut<'a, T>(T, &'a ());
+
+impl<'a, T: 'a> Iterator for RepeatMut<'a, T> {
+
+    type Item = &'a mut T;
+    fn next(&'a mut self) -> Option<Self::Item>
+    //~^ ERROR method not compatible with trait
+    //~| lifetime mismatch
+    {
+        Some(&mut self.0)
+    }
+}
+
+fn main() {}