vala: Fix circular reference in EnumValueType

diff --git a/vala/valaenumvaluetype.vala b/vala/valaenumvaluetype.vala
index 6c6aca3986a795026c778905475ffc3e58ccc597..027c30db13b02b00a12ebac4785552c756ece1f8 100644 (file)
--- a/vala/valaenumvaluetype.vala
+++ b/vala/valaenumvaluetype.vala
@@ -50,7 +50,7 @@ public class Vala.EnumValueType : ValueType {
                        to_string_method.is_extern = true;
                        to_string_method.set_attribute_string ("CCode", "cheader_filename", "glib-object.h");
                        to_string_method.owner = type_symbol.scope;
-                       to_string_method.this_parameter = new Parameter ("this", this);
+                       to_string_method.this_parameter = new Parameter ("this", copy ());
                        to_string_method.scope.add (to_string_method.this_parameter.name, to_string_method.this_parameter);
                }
                return to_string_method;