Duplicate base checking code already covers check for opt base != XInterface

Change-Id: Icd47d87f93641a0b24a96a4be8d3d120f0405f2d

1 files changed, 8 insertions, 0 deletions

diff --git a/idlc/test/parser/interfaceinheritance.tests b/idlc/test/parser/interfaceinheritance.tests
index a7b84125fd1e..f9cac4ca2bd8 100644
--- a/idlc/test/parser/interfaceinheritance.tests
+++ b/idlc/test/parser/interfaceinheritance.tests
@@ -269,3 +269,11 @@ interface Derived {
     interface Hidden;
     interface Base;
 };
+
+
+EXPECT FAILURE "interfaceinheritance.tests 30":
+interface Base {};
+interface Derived {
+    interface Base;
+    [optional] interface com::sun::star::uno::XInterface;
+};