1 files changed, 29 insertions, 0 deletions
diff --git a/src/test/ui/derives/issue-91550.rs b/src/test/ui/derives/issue-91550.rs
new file mode 100644
index 000000000..56fd5ffa8
--- /dev/null
+++ b/src/test/ui/derives/issue-91550.rs
@@ -0,0 +1,29 @@
+use std::collections::HashSet;
+
+/// natural case from the issue
+struct Value(u32);
+
+fn main() {
+    let hs = HashSet::<Value>::new();
+    hs.insert(Value(0)); //~ ERROR
+}
+
+/// synthetic cases
+pub struct NoDerives;
+
+struct Object<T>(T);
+impl<T: Eq> Object<T> {
+    fn use_eq(&self) {}
+}
+impl<T: Ord> Object<T> {
+    fn use_ord(&self) {}
+}
+impl<T: Ord + PartialOrd> Object<T> {
+    fn use_ord_and_partial_ord(&self) {}
+}
+
+fn function(foo: Object<NoDerives>) {
+    foo.use_eq(); //~ ERROR
+    foo.use_ord(); //~ ERROR
+    foo.use_ord_and_partial_ord(); //~ ERROR
+}