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标题: C C++ 遇到的问题犯过的错误 [打印本页]

作者: Qter 时间: 2020-1-27 21:16
标题: C C++ 遇到的问题犯过的错误
1. union 不能包含string
union UnST
{
int i;
//string str; //这个不允许
};

联合体中不能放含有拷贝构造函数的成员

作者: Qter 时间: 2020-1-27 21:36
Run-Time Check Failure #2 - Stack around the variable 'st' was corrupted.

ModCdlKpiCarrUser_JS st;
            memset(&st, 0, sizeof(st));

      如果初始设置的不是同一个结构体的大小会出错
      ModCdlKpiCarrUser_JS_X st;
      memset(&st, 0, sizeof(st)); //引发错误，结构体大小和原来不一至

      strncpy(pack.mobileNumber,xxx,20);//可能越界,改为如下
strncpy(pack.mobileNumber," ",19);

作者: Qter 时间: 2023-8-27 14:49
参数与函数内变量重复定义，造成类型转化失败
严重性代码说明项目文件行禁止显示状态
错误 C2440 “类型强制转换”: 无法从“BusinessData_FileCleanup”转换为“BusinessData_FileCleanup *” CJXT D:\gitee\cjxt\CJXTPCClient\gui\CJXT\MainWindow.cpp 312

void MainWindow::notify(int event, void* pdata, void* content)
{
BusinessData_FileCleanup a;
void* ta = &a;
BusinessData_FileCleanup b = *((struct BusinessData_FileCleanup*)ta);

if (EVENT_FILECLEANUP_ONEFILE == event || EVENT_FILECLEANUP_ALLFILEFINISHED == event) {
BusinessData_FileCleanup data = *((struct BusinessData_FileCleanup*)pdata);

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