Error: The name streambuf is ambiguous, streambuf and std::streambuf.

[rohandreamworld]

Hi i m trying to write huge code buts it getting error,
"/opt/studio11/SUNWspro/prod/include/CCios/iostream.h", line 1387: Error: The name streambuf is ambiguous, streambuf and std::streambuf.
Can anyone explain me whats the reason to get this error and probable solution?????

[z05DSL3A]

The compiler has come across the name streambuf and has found more than one definition for it, streambuf and std::streambuf.

This could be due to including a header that should not be included or careless use of something like using namespace std;

#include<iostream>

int test;          // test 1

namespace GW
{
    int test;      // test 2
}

using namespace GW;

int main()
{
    test = 0;      // error C2872: 'test' : ambiguous symbol
    ::test = 0;    // use test 1
    GW::test = 0;  // use test 2
}