1 files changed, 12 insertions, 0 deletions
diff --git a/ipc/ipdl/test/ipdl/error/redeclMessage.ipdl b/ipc/ipdl/test/ipdl/error/redeclMessage.ipdl
new file mode 100644
index 0000000000..1247aa41cf
--- /dev/null
+++ b/ipc/ipdl/test/ipdl/error/redeclMessage.ipdl
@@ -0,0 +1,12 @@
+//error: message name `Msg' already declared as `MessageType'
+//error: redeclaration of symbol `Msg', first declared at
+
+protocol redeclMessage {
+
+    // can't declare two messages with the same name
+
+child:
+    async Msg();
+    async Msg();
+
+};