1 files changed, 24 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-29037.rs b/tests/ui/issues/issue-29037.rs
new file mode 100644
index 000000000..155ed144b
--- /dev/null
+++ b/tests/ui/issues/issue-29037.rs
@@ -0,0 +1,24 @@
+// check-pass
+#![allow(dead_code)]
+// This test ensures that each pointer type `P<X>` is covariant in `X`.
+
+use std::rc::Rc;
+use std::sync::Arc;
+
+fn a<'r>(x: Box<&'static str>) -> Box<&'r str> {
+    x
+}
+
+fn b<'r, 'w>(x: &'w &'static str) -> &'w &'r str {
+    x
+}
+
+fn c<'r>(x: Arc<&'static str>) -> Arc<&'r str> {
+    x
+}
+
+fn d<'r>(x: Rc<&'static str>) -> Rc<&'r str> {
+    x
+}
+
+fn main() {}