关于c++参数返回返回临时变量返回局部变量地址错误的解决

作者: 吉凶以情迁 | 来源:发表于2023-07-09 15:58 被阅读0次

错误代码

FBox* UIActorExtensionMethods::GetComponentsBoundingBoxX(AActor* This)
{
    FBox box1 = This->GetComponentsBoundingBox();
    return &box1;//则提示返回临时变量返回局部变量地址错误
}

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推荐使用传递引用的办法。


FBox* UIActorExtensionMethods::GetComponentsBoundingBoxX(AActor* This)
{
    FBox* box1 = new FBox(This->GetComponentsBoundingBox());
    return box1;//如果直接 FBox =This->GetComponentsBoundingBox()然后&FBox 则提示返回临时变量返回局部变量地址错误
}


FBox UIActorExtensionMethods::GetComponentsBoundingBoxX1(AActor* This)
{
    static FBox box1 = This->GetComponentsBoundingBox();
    return box1;
}

void UIActorExtensionMethods::GetComponentsBoundingBoxX2(AActor* This, FBox& OutBox)
{
    OutBox = This->GetComponentsBoundingBox();
    
}