mbstate_t compile error

[rod_001]

According to what I can find in google the error has to do with
mbstate_t being deprecated from the native headers.
The issue only occurs when I compile classes which use native
functions like strlen, memcpy etc.

I have tried several suggested google solutions including :

* Adding the following to the top of my 'cpp' file in seperate steps
        1> using namespace std;

        2> namespace std {}
           using namespace std;

        3> typedef o-type mbstate_t;

        4> #ifdef __GNUC__
             #if __GNUC__ < 3
               #include <hash_map.h>
               namespace Sgi { using ::hash_map; }; // inherit globals
             #else
               #include <ext/hash_map>
               #if __GNUC_MINOR__ == 0
                 namespace Sgi = std;               // GCC 3.0
               #else
                 namespace Sgi = ::__gnu_cxx;       // GCC 3.1 and
later
               #endif
             #endif
             #else      // ...  there are other compilers, right?
               namespace Sgi = std;
           #endif

           Sgi::hash_map<int,int> my_map;

* Compiling the source with the following compile options --> g++ -c -
g ISSException.cpp -o ISSException.o -D_GLIBCXX_HAVE_MBSTATE_T

None of these solutions have resolved the compiling error and I am
also not sure I am implementing the solutions correctly.

The problem is occuring on an AIX 5.1.0.0 box running gcc version
4.0.0 which I do not readily have access to.
I have tried to replicate the errors on our linux box but the code
compiles succesfully with gcc v 4.0.4

I originally wrote the code using g++ v2.95 and there was no problem
porting the code to the AIX equivalent.

***** CPP code *****
#include <memory.h>
#include <iostream>
#include <string.h>
#include <stdio.h>

#include "ISSException.h"

class ISSExceptionImpl
    {
    public:
        ISSExceptionImpl()
            {
            //puts( "Creating ISSExceptionIMPL" );
            errorText = NULL;
            locationInfo = NULL;
            }

        ISSExceptionImpl(const ISSExceptionImpl& src)
            {
            //puts( "Creating XSBExcpetionIMPL with src" );
            errorText = NULL;
            locationInfo = NULL;
            }

        ~ISSExceptionImpl()
            {
            //puts( "Destructing ISSExceptionImpl" );
            if ( errorText != NULL )
                delete errorText;
            if ( locationInfo != NULL )
                delete locationInfo;
            }

       char *errorText;
       char *locationInfo;

       unsigned long ulErrorCode;

    };

//-------------------------------------------------------------------------------
//  ISSException::SetLocationInfo
//-------------------------------------------------------------------------------
void ISSException::SetLocationInfo( const char *pcszLocationInfo )
    {
    //fprintf( stdout, "Setting LocationInfo of %s\n",
pcszLocationInfo );
    if (pImpl->locationInfo != NULL)
            delete pImpl->locationInfo;

    pImpl->locationInfo = new char[ strlen( pcszLocationInfo ) + 1];
    memset( pImpl->locationInfo, 0x00, strlen( pcszLocationInfo ) +
1 );
    memcpy( pImpl->locationInfo, pcszLocationInfo,
strlen( pcszLocationInfo ) );
    //fprintf( stdout, "Location Info now = %s\n", pImpl-
>locationInfo );
    }

***** Header code *****
class ISSExceptionImpl;

class ISSException
{
public:
/**
 * @method ISSException::SetLocationInfo
 * @proto void SetLocationInfo( const char *pcszLocationInfo );
 * @group Public Member
 * @description Sets the Location Text to the string passed in. As the
class can store
 * more than one Location Text (up to 5), this will reset the number
of lines to 1.
 * @param pcszLocationInfo A pointer to the string of information to
store.
 * @return A const char pointer to the error location text
 */
    void SetLocationInfo( const char *pcszLocationInfo );
    ISSException& operator= ( const ISSException& );

private:
    ISSExceptionImpl *pImpl;
};

***** Beginning of Compile Results *****
sapuat /home/mqappl/PostLink-Put >>g++ -c -g ISSException.cpp -o
ISSException>
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/wchar.h:
299: error: '
mbstate_t' has not been declared
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/wchar.h:
302: error: '
mbstate_t' has not been declared
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/c++/cwchar:
71: error:
 '::mbstate_t' has not been declared
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/c++/cwchar:
145: error
: '::btowc' has not been declared
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/c++/cwchar:
150: error
: '::fwide' has not been declared
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/c++/cwchar:
151: error
: '::fwprintf' has not been declared
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/c++/cwchar:
152: error
: '::fwscanf' has not been declared
/opt/freeware/lib/gcc/powerpc-ibm-aix5.1.0.0/4.0.0/include/c++/cwchar:
155: error
: '::mbrlen' has not been declared