From 0c1584455101907ff5cce151c43879be2e3bf7a7 Mon Sep 17 00:00:00 2001 From: George Marques Date: Thu, 29 Dec 2022 08:57:41 -0300 Subject: GDScript: Error when assigning return value of void function This also makes built-in method calls empty the return value when the method is void, to avoid keeping returning a garbage value in such case. --- modules/gdscript/gdscript_vm.cpp | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'modules/gdscript/gdscript_vm.cpp') diff --git a/modules/gdscript/gdscript_vm.cpp b/modules/gdscript/gdscript_vm.cpp index fdcc0625d7..bc8e33b01a 100644 --- a/modules/gdscript/gdscript_vm.cpp +++ b/modules/gdscript/gdscript_vm.cpp @@ -1533,8 +1533,28 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a Callable::CallError err; if (call_ret) { GET_INSTRUCTION_ARG(ret, argc + 1); +#ifdef DEBUG_ENABLED + Variant::Type base_type = base->get_type(); + Object *base_obj = base->get_validated_object(); + StringName base_class = base_obj ? base_obj->get_class_name() : StringName(); +#endif base->callp(*methodname, (const Variant **)argptrs, argc, *ret, err); #ifdef DEBUG_ENABLED + if (ret->get_type() == Variant::NIL) { + if (base_type == Variant::OBJECT) { + if (base_obj) { + MethodBind *method = ClassDB::get_method(base_class, *methodname); + if (*methodname == CoreStringNames::get_singleton()->_free || (method && !method->has_return())) { + err_text = R"(Trying to get a return value of a method that returns "void")"; + OPCODE_BREAK; + } + } + } else if (Variant::has_builtin_method(base_type, *methodname) && !Variant::has_builtin_method_return_value(base_type, *methodname)) { + err_text = R"(Trying to get a return value of a method that returns "void")"; + OPCODE_BREAK; + } + } + if (!call_async && ret->get_type() == Variant::OBJECT) { // Check if getting a function state without await. bool was_freed = false; -- cgit v1.2.3