Article ID: 168440
Article Last Modified on 5/26/2005
APPLIES TO
- The Standard C++ Library, when used with:
- Microsoft Visual C++ 5.0 Enterprise Edition
- Microsoft Visual C++ 6.0 Enterprise Edition
- Microsoft Visual C++ 5.0 Professional Edition
- Microsoft Visual C++ 6.0 Professional Edition
- Microsoft Visual C++ 6.0 Standard Edition
This article was previously published under Q168440
SYMPTOMS
If you try to pass an __int64 variable to the ostream operator <<, you get the following error:
CAUSE
There is no operator << for __int64 type defined for the ostream class.
RESOLUTION
Define your own version of operator <<. The following sample code section shows a simple solution for << operator that converts the __int64 variable to a char * type and passes it to the ostream << operator.
STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.
This problem was corrected in Microsoft Visual C++ .NET.
MORE INFORMATION
The following sample program demonstrates the problem and workaround:
//Sample.cpp
// Compiler Options : /GX
//#define WORKAROUND //Uncomment this line to workaround
#include<iostream>
using namespace std;
#ifdef WORKAROUND
std::ostream& operator<<(std::ostream& os, __int64 i )
{
char buf[20];
sprintf(buf,"%I64d", i );
os << buf;
return os;
}
#endif
int main(){
__int64 i64;
cout << i64 ;
return 0;
}
Keywords: kberrmsg kbbug kbfix kbcrt kbnoupdate KB168440
