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Fix `BBNode::get_value()` crash with a freed object in GDExtension 

It may be a bug in GDExtension. I optimized the code, and, as a workaround, removed casting to Object* from Variant. This fixed the issue. The same code worked well using module.

(cherry picked from commit 689c8fab6f)
This commit is contained in:
Serhii Snitsaruk 2024-09-14 19:30:28 +02:00
parent 644c589705
commit fd1ac1cbb8
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GPG Key ID: A965EF8799FFEC2D
1 changed files with 4 additions and 16 deletions
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20
blackboard/bb_param/bb_node.cpp
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@ -11,15 +11,6 @@
#include "bb_node.h" #include "bb_node.h"
#ifdef LIMBOAI_MODULE
#include "core/error/error_macros.h"
#include "scene/main/node.h"
#endif // LIMBOAI_MODULE
#ifdef LIMBOAI_GDEXTENSION
#include <godot_cpp/classes/node.hpp>
#endif // LIMBOAI_GDEXTENSION
Variant BBNode::get_value(Node *p_scene_root, const Ref<Blackboard> &p_blackboard, const Variant &p_default) { Variant BBNode::get_value(Node *p_scene_root, const Ref<Blackboard> &p_blackboard, const Variant &p_default) {
ERR_FAIL_NULL_V_MSG(p_scene_root, Variant(), "BBNode: get_value() failed - scene_root is null."); ERR_FAIL_NULL_V_MSG(p_scene_root, Variant(), "BBNode: get_value() failed - scene_root is null.");
ERR_FAIL_NULL_V_MSG(p_blackboard, Variant(), "BBNode: get_value() failed - blackboard is null."); ERR_FAIL_NULL_V_MSG(p_blackboard, Variant(), "BBNode: get_value() failed - blackboard is null.");
@ -33,13 +24,10 @@ Variant BBNode::get_value(Node *p_scene_root, const Ref<Blackboard> &p_blackboar
if (val.get_type() == Variant::NODE_PATH) { if (val.get_type() == Variant::NODE_PATH) {
return p_scene_root->get_node_or_null(val); return p_scene_root->get_node_or_null(val);
} else if (val.get_type() == Variant::OBJECT || val.get_type() == Variant::NIL) {
return val;
} else { } else {
Object *obj = val; WARN_PRINT("BBNode: Unexpected variant type: " + Variant::get_type_name(val.get_type()) + ". Returning default value.");
if (unlikely(obj == nullptr && val.get_type() != Variant::NIL)) { return p_default;
WARN_PRINT("BBNode: Unexpected variant type of a blackboard variable.");
return p_default;
} else {
return obj;
}
} }
} }