- fail when no known op are given

diff --git a/ext/com_dotnet/com_variant.c b/ext/com_dotnet/com_variant.c
index 882100af6258582f7ac6d13c9c12ea263b075fd5..fd08aeb224bbda4b6a16a7d35f0a0749b608c44c 100644 (file)
--- a/ext/com_dotnet/com_variant.c
+++ b/ext/com_dotnet/com_variant.c
@@ -755,6 +755,8 @@ static void variant_unary_operation(enum variant_unary_opcode op, INTERNAL_FUNCT
                case VOP_NOT:
                        result = VarNot(vleft, &vres);
                        break;
+               default:
+                       result = E_INVALIDARG;
        }
 
        if (SUCCEEDED(result)) {