Defensive memory safety

## Generic Issue

- [ ] Ensure this issue is not a bug report or feature request

**Description**
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**Possible Solution**

**Additional context/Screenshots**
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该 issue 仅提供了一个通用模板，没有指明文件、测试、入口点或具体的 memory-safety 问题。首先定义受影响的 C++ 代码和可复现的范围；无法根据当前描述确定完成标准。

由索引模型根据 Issue 内容生成。