problem with int_type.... More options

My compiler seems unhappy with int_type

The method declaration is:

Code:

int_type dbgBuf::overflow(int_type ch) 
{ 
#ifdef FF_DEBUG 
        if (traits_type::not_eof(ch)) 
        { 
                if (at_start) 
                { 
                        for (int i = 0; i < level; ++i) 
                        { 
                                if (log_on) 
                                { 
                                        buffer->sputc(traits_type::to_char_type('\t')); 
                                } 
                        } 
                } 

                if (log_on) 
                        buffer->sputc(traits_type::to_char_type(ch)); 

                if (traits_type::eq_int_type(ch, traits_type::to_int_type('\n'))) 
                { 
                        at_start = true; 
                } 
                else 
                { 
                        at_start = false; 
                } 
        } 
#endif 
        return ch; 
} 

The error I'm getting is:

error: 'int_type' does not name a type.

So I tried:
traits_type::int_type dbgBuf:verflow(traits_type::int_type ch)

and I get:
error 'traits_type' has not been declared
error: 'int_type' has does not name a type

NOTE:
None of the other 'traits_type' like to_char_type or to_int_type seem to be affected... or maybe they just haven't been complied yet....

Is there perhaps a header file I'm forgetting to include?


MAC OS X. 10.4
XCode