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@mhduiy mhduiy commented Nov 24, 2025

  1. Added disconnect call for m_lineEdit from this object in destructor
  2. Prevents potential lambda function access to deleted this pointer
  3. Ensures clean signal-slot disconnection during object destruction
  4. Avoids use-after-free crashes when signals are emitted after object deletion

Influence:

  1. Test password authentication widget destruction scenarios
  2. Verify no crashes when closing authentication dialogs
  3. Test signal emission handling during widget lifecycle
  4. Validate memory safety in authentication flow

fix: 在AuthPassword析构函数中断开lineEdit连接

  1. 在析构函数中添加了m_lineEdit与当前对象的断开连接调用
  2. 防止lambda函数访问已删除的this指针
  3. 确保对象销毁时信号槽连接的清理
  4. 避免对象删除后信号发射导致的use-after-free崩溃

Influence:

  1. 测试密码认证小部件的销毁场景
  2. 验证关闭认证对话框时不会出现崩溃
  3. 测试小部件生命周期中的信号发射处理
  4. 验证认证流程中的内存安全性

pms: BUG-341127

deepin-ci-robot added a commit to linuxdeepin/dde-session-shell-snipe that referenced this pull request Nov 24, 2025
Synchronize source files from linuxdeepin/dde-session-shell.

Source-pull-request: linuxdeepin/dde-session-shell#52
1. Added disconnect call for m_lineEdit from this object in destructor
2. Prevents potential lambda function access to deleted this pointer
3. Ensures clean signal-slot disconnection during object destruction
4. Avoids use-after-free crashes when signals are emitted after object
deletion

Influence:
1. Test password authentication widget destruction scenarios
2. Verify no crashes when closing authentication dialogs
3. Test signal emission handling during widget lifecycle
4. Validate memory safety in authentication flow

fix: 在AuthPassword析构函数中断开lineEdit连接

1. 在析构函数中添加了m_lineEdit与当前对象的断开连接调用
2. 防止lambda函数访问已删除的this指针
3. 确保对象销毁时信号槽连接的清理
4. 避免对象删除后信号发射导致的use-after-free崩溃

Influence:
1. 测试密码认证小部件的销毁场景
2. 验证关闭认证对话框时不会出现崩溃
3. 测试小部件生命周期中的信号发射处理
4. 验证认证流程中的内存安全性

pms: BUG-341127
deepin-ci-robot added a commit to linuxdeepin/dde-session-shell-snipe that referenced this pull request Nov 25, 2025
Synchronize source files from linuxdeepin/dde-session-shell.

Source-pull-request: linuxdeepin/dde-session-shell#52
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deepin pr auto review

这段代码是一个析构函数的改进,我来分析一下:

  1. 语法逻辑:
  • 语法正确,符合C++规范
  • 逻辑清晰,在析构函数中先断开信号槽连接,再执行其他清理工作
  1. 代码质量:
  • 优点:
    • 添加了清晰的注释,解释了为什么需要断开连接
    • 解决了潜在的崩溃问题
    • 代码结构清晰,先处理信号槽,再处理其他资源
  1. 代码性能:
  • 这个改进不会影响运行时性能
  • 析构函数中的disconnect操作是必要的,开销很小
  1. 代码安全:
  • 解决了一个重要的安全问题:防止在析构过程中访问已释放的成员变量
  • 避免了focusChanged信号触发时访问可能已被销毁的成员变量导致的崩溃

改进建议:

  1. 可以考虑将disconnect操作放在析构函数最开始,确保在任何其他操作之前就断开连接
  2. 建议在类文档中记录这个特殊情况,方便其他开发者理解
  3. 可以考虑使用RAII方式管理资源,减少手动disconnect的需要

示例改进代码:

AuthPassword::~AuthPassword()
{
    // 立即断开所有信号连接,防止在析构过程中触发回调
    m_lineEdit->disconnect(this);
    
    // 处理重置密码消息
    if (m_resetPasswordMessageVisible) {
        closeResetPasswordMessage();
    }
}

总的来说,这是一个很好的改进,有效解决了一个潜在的崩溃问题。代码改动很小但很重要,体现了对Qt对象生命周期和信号槽机制的深入理解。

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: mhduiy, yixinshark

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@mhduiy mhduiy merged commit 740630f into linuxdeepin:master Nov 25, 2025
14 of 15 checks passed
mhduiy pushed a commit to linuxdeepin/dde-session-shell-snipe that referenced this pull request Nov 25, 2025
Synchronize source files from linuxdeepin/dde-session-shell.

Source-pull-request: linuxdeepin/dde-session-shell#52
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3 participants