1 files changed, 10 insertions, 0 deletions
diff --git a/ipc/ipdl/test/ipdl/ok/Pmaybe_Union.ipdl b/ipc/ipdl/test/ipdl/ok/Pmaybe_Union.ipdl
new file mode 100644
index 0000000000..67f24cb794
--- /dev/null
+++ b/ipc/ipdl/test/ipdl/ok/Pmaybe_Union.ipdl
@@ -0,0 +1,10 @@
+union MaybeUnion {
+    int[];
+    int;
+    double;
+};
+
+sync protocol Pmaybe_Union {
+parent:
+    async Msg(MaybeUnion u, MaybeUnion? au) returns (MaybeUnion r);
+};