谢过先，呵呵
这个是VC++ MSDN里提供的例子：
//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 ;//这是提示错误的地方，
//这是编译提示的错误D:\工程\VC_workspace\text\sample.cpp(23) : error C2593: 'operator <<' is ambiguous
return 0;
}
自己的程序是这样的：
// Demonstrate the multithreaded garbage collector.
#include <iostream>
#include <new>
#include "gcthrd.h"
using namespace std;
// A simple class for load testing GCPtr.
class LoadTest
{
//int a, b;
public:
double n[100000]; // just to take-up memory
double val;
int a, b;
LoadTest() { a = b = 0; }
LoadTest(int x, int y)
{
a = x;
b = y;
val = 0.0;
}
friend ostream &operator<<(ostream &strm, LoadTest &obj);
};
// Create an insertor for LoadTest.
ostream &operator<<(ostream &strm, LoadTest &obj)
{
strm << "(" << obj.a << " " << obj.b << ")";
return strm;
}
int main()
{
GCPtr<LoadTest> mp;
int i;
for(i = 1; i < 2000; i++) {
try {
mp = new LoadTest(i, i);
if(!(i%100))
cout <<
"gclist contains " << mp.gclistSize() << " entries.\n";
}
catch(bad_alloc xa)
{
// For most users, this exception won't
// ever occur.
cout << "Last object: " << *mp << endl; //这是出错的地方
// 编译提示的错误：D:\工程\VC_workspace\GCPtr\main.cpp(46) : error C2593:'operator <<' is ambiguous
cout << "Length of gclist: " << mp.gclistSize() << endl;
}
}
return 0;
}
我在想，是不是编译环境的问题，也不知道该如何去设置。
[此贴子已经被作者于2006-3-9 16:17:12编辑过]
