Re: error C2872: 'streambuf' : ambiguous symbol Problem

From:
"Victor Bazarov" <v.Abazarov@comAcast.net>
Newsgroups:
comp.lang.c++
Date:
Fri, 9 Jun 2006 12:35:49 -0400
Message-ID:
<e6c817$602$1@news.datemas.de>
Prasad wrote:

 I am a beginner in VC++..


You might then find 'microsoft.public.vc.*' hierarchy of newsgroups
useful as well...

I am trying to write a Win32 console application in visual studio..
I am using following header files..

#include <STRING>


I don't know of a standard header <STRING>. There is <string>, and
since C++ is case-sensitive language, I believe it has to be spelled
as specified. It is possible that you employed some kind of compiler
extensions, of course...

using namespace std;

#include <hash_map>//from Standard template library
//and some other headers

When i complie my code , i am getting the follwing errors ...

c:\program files\microsoft visual studio\vc98\include\istream.h(102) :


'istream.h' looks suspicious. Is it an older, pre-standard header (when
many of them had '.h' after the name)? Is it possible that you're using
<hash_map> from the source that is very old, pre-standard? Well, there
is no *standard* header <hash_map>, but some old sources might be written
to use old pre-standard headers like 'istream.h' (which looks like one).

error C2872: 'streambuf' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(117) :
error C2872: 'streampos' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(118) :
error C2872: 'streamoff' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(119) :
error C2872: 'streampos' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(126) :
error C2872: 'streambuf' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(132) :
error C2872: 'ios' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(139) :
error C2872: 'istream' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(140) :
error C2872: 'istream' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(140) :
error C2872: 'ios' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(140) :
error C2872: 'ios' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(142) :
error C2872: 'istream' : ambiguous symbol
c:\program files\microsoft visual studio\vc98\include\istream.h(143) :
error C2872: 'istream' : ambiguous symbol
-----and so on...
Error executing cl.exe.

ChatServer.obj - 102 error(s), 0 warning(s)

------------------
If i comment any one of those header files, it's compiled with no
errors....


That seems to indicate a conflict of dependencies. Make sure you have
the latest version of <hash_map> (wherever it is you got it from).

But i need those two headers to be included (Becoz, hash_map.h is
being used for hash data structures and string.h using namespace


Note, none of them are actually ".h".

std. is being used in some ou_thread.h which is for threads )..

How can i solve this problem?...


You need to get in touch with makers of <hash_map> and see if they have
anything newer.

V
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