CC编译问题

[bulcsu]

使用SUN Stuidio11的编译器进行编译，出现如下问题：
The name istream is ambiguous, istream and std::istream
请问是何原因？谢谢！

[wuyu637]

参考如下方式来解决：（看一下那个帖子，命名空间的问题）

I suggest you to use the ISO/ANSI Standard C++ recommendation for using the
Standard C++ Library:

- include the header files without the .h extension
- after this, explict that you will use the namespace std

Example:

#include <iostream>
#include <sstream> //for streamers
#include <string>

using namespace std;

//your code goes here

In addition, the ostrstream class is deprecate. You must replace it with
std:stringstream. This one is declared in the <sstream> header file.

Please, check if your compiler is compliant with the last standardization
of C++. If not so, try to use a more updated compiler. For instance, you
can download the gcc GNU compiler from www.gnu.org. It's free and fully adheres
to the last C++ standardization (199. When I use gcc under Unix, my programs
that use the Standard C++ Library needs to be linked with the -lstdc++.

Luis

http://forums.devx.com/showthread.php?t=92319

[bulcsu]

完整的提示是这样的：
"/sunstudio/SUNWspro/prod/include/CC/rw7/rw/rstream.h", line 46: Error: The name istream is ambiguous, istream and std::istream.

我是不是得修改/sunstudio/SUNWspro/prod/include/CC/rw7/rw/rstream.h 这个文件？

这个文件的头是这样写的：
#include "rw/defs.h"

# ifdef __GLOCK__
# include <iostream.hxx>
# else
# ifndef RW_NO_IOSTD
# include <iostream>
# else

# include <iostream.h>
# endif
# endif

[bulcsu]

补充一下：
因为我编译的代码比较老，因此还有iostream.h的定义。而在目前的编译器里面有一个RW_NO_IOSTD，它的定义是：
*** RW_NO_IOSTD: Defined if you have the "original flavor" iostreams
package, as opposed to the emerging draft ANSI C++ standard.
也就是说如果我定义了这个宏的话，现在的C＋＋标准库就不会和以前的冲突，那我应该在哪里定义呢？

[bulcsu]

没人回答吗，已经困惑很多天了。