Make Callable not crash on call when the object has been freed

Also add a GDScript test for this case.

1 files changed, 9 insertions, 0 deletions

diff --git a/core/variant/callable.cpp b/core/variant/callable.cpp
index e06b3e07ef..5c87042f6b 100644
--- a/core/variant/callable.cpp
+++ b/core/variant/callable.cpp
@@ -50,6 +50,15 @@ void Callable::call(const Variant **p_arguments, int p_argcount, Variant &r_retu
 		custom->call(p_arguments, p_argcount, r_return_value, r_call_error);
 	} else {
 		Object *obj = ObjectDB::get_instance(ObjectID(object));
+#ifdef DEBUG_ENABLED
+		if (!obj) {
+			r_call_error.error = CallError::CALL_ERROR_INSTANCE_IS_NULL;
+			r_call_error.argument = 0;
+			r_call_error.expected = 0;
+			r_return_value = Variant();
+			return;
+		}
+#endif
 		r_return_value = obj->call(method, p_arguments, p_argcount, r_call_error);
 	}
 }