21a22,33
> 	template<typename Ch>
> 	unsigned long to_unsigned( Ch ch )
> 	{
> 		return static_cast<unsigned long>( ch );
> 	}
> 	template<>
> 	inline unsigned long to_unsigned<char>( char ch )
> 	{
> 		unsigned char* p = reinterpret_cast<unsigned char*>( &ch );
> 		return *p;
> 	}
> 
46c58
<                     unsigned long u = (std::min)(static_cast<unsigned long>(*b), 0xFFFFul);
---
>                     unsigned long u = (std::min)(to_unsigned<Ch>(*b), 0xFFFFul);