1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/coherence/issue-99663.rs b/src/test/ui/coherence/issue-99663.rs
new file mode 100644
index 000000000..a2d4d398c
--- /dev/null
+++ b/src/test/ui/coherence/issue-99663.rs
@@ -0,0 +1,22 @@
+// check-pass
+
+#![feature(type_alias_impl_trait)]
+
+struct Send<T> {
+    i: InnerSend<T>,
+}
+
+type InnerSend<T> = impl Sized;
+
+fn constrain<T>() -> InnerSend<T> {
+    ()
+}
+
+trait SendMustNotImplDrop {}
+
+#[allow(drop_bounds)]
+impl<T: Drop> SendMustNotImplDrop for T {}
+
+impl<T> SendMustNotImplDrop for Send<T> {}
+
+fn main() {}