1 files changed, 38 insertions, 0 deletions
diff --git a/tests/ui/nll/issue-48179.rs b/tests/ui/nll/issue-48179.rs
new file mode 100644
index 000000000..f81203dc4
--- /dev/null
+++ b/tests/ui/nll/issue-48179.rs
@@ -0,0 +1,38 @@
+// Regression test for #48132. This was failing due to problems around
+// the projection caching and dropck type enumeration.
+
+// check-pass
+
+pub struct Container<T: Iterator> {
+    value: Option<T::Item>,
+}
+
+impl<T: Iterator> Container<T> {
+    pub fn new(iter: T) -> Self {
+        panic!()
+    }
+}
+
+pub struct Wrapper<'a> {
+    content: &'a Content,
+}
+
+impl<'a, 'de> Wrapper<'a> {
+    pub fn new(content: &'a Content) -> Self {
+        Wrapper {
+            content: content,
+        }
+    }
+}
+
+pub struct Content;
+
+fn crash_it(content: Content) {
+    let items = vec![content];
+    let map = items.iter().map(|ref o| Wrapper::new(o));
+
+    let mut map_visitor = Container::new(map);
+
+}
+
+fn main() {}