[PATCH 5/6] widl: Require composition interfaces to be defined.

[Hans Leidekker]

From: Hans Leidekker

---
 tools/widl/parser.y | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/widl/parser.y b/tools/widl/parser.y
index 946eea7ec0c..cb8ff0eac63 100644
--- a/tools/widl/parser.y
+++ b/tools/widl/parser.y
@@ -2990,6 +2990,9 @@ static void check_constructor_interfaces( const type_t *runtimeclass )
         }
         else if (attr->type == ATTR_COMPOSABLE)
         {
+            if (!value->u.var->declspec.type->defined)
+                error_at( &attr->where, "composition interface %s is undefined\n", value->u.var->declspec.type->name );
+
             check_composition_interface( value->u.var->declspec.type );
         }
         else if (attr->type == ATTR_STATIC)