学步园

把 project->配置属性->c/c++->代码生成->基本运行时检查 为 默认值 就不会报本异常。具体原因正在研究中。。。

如果改为其他就有exception。

exception有时是有道理的

// step 1

STRINGC2& STRINGC2::operator += (const char x)

{

// if (x == 0) return *this;

char ptr[1]; // max is 1 digit

ptr[0] = x;

ptr[1] = '\0';

*this += ptr; // off to step 2 and back

return *this; // step 4 crash

}

这个也会导致上述exception。

问题描述：

Problem

 

The following error message occurs when building on Test RealTIme environment with the cvisual7 TDP?

Run-Time Check Failure #2 - Stack around the variable 'xxx' was corrupted.  

 

Cause  

Stack pointer corruption is caused writing outside the allocated buffer in stack memeory. 

 

Solution 

This kind of error is detected by setting /RTC1 compiler option from menu Project -> Settings -> Configuration properties -> Build -> Compiler -> Compiler flags when using TDP cvisual7 in IBM® Rational® Test RealTime environment.. This enables stack frame run-time
error checking. For example, the following code may cause the above error messge.

#include <stdio.h>

#include <string.h>

#define BUFF_LEN 11 // 12 may fix the Run-Time Check Failure #2

int rtc_option_test(char * pStr);

int main()

{

char * myStr = "hello world";

rtc_option_test(myStr);

return 0;

}

int rtc_option_test(char * pStr)

{

char buff[BUFF_LEN];

strcpy(buff, pStr); //cause Run-Time Check Failure #2 - Stack around

//the variable 'buff' was corrupted.

return 0;

}