codegen: Avoid critical when connecting dynamic signals

diff --git a/codegen/valagsignalmodule.vala b/codegen/valagsignalmodule.vala
index 15a18cb7b0a20c78e8adf741cb9387938054e677..ba4b4d11ea4d7b77da394fdf3666520f60c7baf8 100644 (file)
--- a/codegen/valagsignalmodule.vala
+++ b/codegen/valagsignalmodule.vala
@@ -181,7 +181,9 @@ public class Vala.GSignalModule : GObjectModule {
                        }
                }
 
-               signal_enum.add_value (new CCodeEnumValue ("%s_%s_SIGNAL".printf (get_ccode_upper_case_name ((TypeSymbol)sig.parent_symbol), get_ccode_upper_case_name (sig))));
+               if (signal_enum != null && sig.parent_symbol is TypeSymbol) {
+                       signal_enum.add_value (new CCodeEnumValue ("%s_%s_SIGNAL".printf (get_ccode_upper_case_name ((TypeSymbol) sig.parent_symbol), get_ccode_upper_case_name (sig))));
+               }
 
                sig.accept_children (this);