codebridge-ai/testlog/deepseek-coder-6.7b/cpp/memory-safety-1754145273878.json

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{
  "timestamp": "2025-08-02T14:34:33.877Z",
  "model": "deepseek-coder:6.7b",
  "language": "cpp",
  "scenario": "memory-safety",
  "task": "Add destructor, copy constructor, and move semantics",
  "originalCode": "class Buffer {\n    char* data;\n    int size;\npublic:\n    Buffer(int s) {\n        data = new char[s];\n        size = s;\n    }\n};",
  "rawResponse": "Here is your updated class with added destructor, copy constructor, and move constructor:\n\n```cpp\nclass Buffer {\n    char* data;\n    int size;\npublic:\n    // Constructor\n    Buffer(int s) \n        : data(new char[s]), size(s) {}\n    \n    // Copy Constructor\n    Buffer(const Buffer& other) \n        : data(new char[other.size]), size(other.size) {\n        std::copy(other.data, other.data + other.size, data);\n    }\n\n    // Move constructor\n    Buffer(Buffer&& other) noexcept \n        : data(std::exchange(other.data, nullptr)), size(std::exchange(other.size, 0)) {}\n    \n    // Destructor\n    ~Buffer() {\n        delete[] data;\n    }\n};\n```\nIn this code:\n- The constructor initializes the `data` member with a new array of characters of size `s` and sets the `size` to `s`.\n- The copy constructor creates a deep copy of the other object's `data` by allocating a new array of the same size as the other object, then copying over each element from the other object's data into this newly allocated data.\n- The move constructor takes ownership of the other object's resources (its `data` and `size`) by swapping them with nullptrs using `std::exchange`. This is a common way to implement move semantics in modern C++.\n- The destructor deletes the dynamically allocated memory for `data` when an instance of this class goes out of scope or gets destroyed.\n",
  "improvedCode": "class Buffer {\n    char* data;\n    int size;\npublic:\n    // Constructor\n    Buffer(int s) \n        : data(new char[s]), size(s) {}\n    \n    // Copy Constructor\n    Buffer(const Buffer& other) \n        : data(new char[other.size]), size(other.size) {\n        std::copy(other.data, other.data + other.size, data);\n    }\n\n    // Move constructor\n    Buffer(Buffer&& other) noexcept \n        : data(std::exchange(other.data, nullptr)), size(std::exchange(other.size, 0)) {}\n    \n    // Destructor\n    ~Buffer() {\n        delete[] data;\n    }\n};",
  "duration": 9126,
  "success": true,
  "qualityMetrics": {
    "hasCode": true,
    "hasDestructor": true,
    "hasStdLibrary": true,
    "score": 0.5384615384615384,
    "rawScore": 0.7,
    "maxScore": 1.3
  },
  "error": null
}