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【必现崩溃】#634的改动会导致在Lua中按引用传递C++定义的结构体时，必定崩溃 #689

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Soulrac-ydd opened this issue Feb 2, 2024 · 1 comment
Open

【必现崩溃】#634的改动会导致在Lua中按引用传递C++定义的结构体时，必定崩溃 #689

Soulrac-ydd opened this issue Feb 2, 2024 · 1 comment

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@Soulrac-ydd
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定位到问题所在就是#634的修改导致的，改回浅拷贝就正常运行了
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深拷贝会触发结构体内部容器的copy，如果此前dest对应容器内部存储的（如示例FString）数据地址与src对应容器内部存储的（如示例FString）数据地址相同，那么在容器copy时会优先Empty清掉dest内的数据，由于容器内存储数据地址相同，src的也被清了，地址非法，这时再从src向dest拷贝就会崩溃
@PredawnRaziel
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非常好issue，使我的code旋转。
#634 是去年7月的更新，我怀疑跟某些后续的更新有逻辑冲突，比如去年11月提交的 e4c36a2

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@PredawnRaziel @Soulrac-ydd