1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/regions/issue-21520.rs b/src/test/ui/regions/issue-21520.rs
new file mode 100644
index 000000000..ab4ac7237
--- /dev/null
+++ b/src/test/ui/regions/issue-21520.rs
@@ -0,0 +1,22 @@
+// check-pass
+#![allow(dead_code)]
+// Test that the requirement (in `Bar`) that `T::Bar : 'static` does
+// not wind up propagating to `T`.
+
+// pretty-expanded FIXME #23616
+
+pub trait Foo {
+    type Bar;
+
+    fn foo(&self) -> Self;
+}
+
+pub struct Static<T:'static>(T);
+
+struct Bar<T:Foo>
+    where T::Bar : 'static
+{
+    x: Static<Option<T::Bar>>
+}
+
+fn main() { }