أين مكان الخطأ فى هذا الكود

#include <limits>

namespace MathX
{
typedef signed int    int32;
typedef unsigned int uint32;

typedef signed long long    int64;
typedef unsigned long long uint64;

typedef uint32 mathx_ucomp;
typedef  int32 mathx_scomp;
typedef uint64 mathx_udcomp;
typedef  int64 mathx_sdcomp;

template<typename t>
struct sizeof_ex
{
	static const uint32 value = sizeof(t) * 8;
};

template<uint64 val>
struct is_power_of_2
{
	static const bool value = !(val & (val - 1u));
};

enum type_classes { tc_native,  tc_custom };

enum type_ids {	ti_basic_int, ti_basic_float, ti_int_t, ti_uint_t, ti_float_t };

template <typename t>
struct basic_info
{
	static const bool is_signed = (t(-1) == -1);
	static const bool is_integer = (t(3.14) != 3.14);
	static const uint32 num_of_bits = sizeof_ex<t>::value;
	static const uint32 comp_bits = num_of_bits;
	static const type_classes type_class = tc_native;
	static const type_ids type_id = is_integer? ti_basic_int: ti_basic_float;
};

template<typename t>
struct global_int
{
	static const t zero;   
	static const t one;    
	static const t mone;   
	static const t minval; 
	static const t maxval; 

	static const uint32 full_t = is_power_of_2<basic_info<t>::num_of_bits>::value? basic_info<t>::num_of_bits: 0u;
	static const uint32 used_t = full_t - int32(basic_info<t>::type_id == ti_int_t);
	static const bool   sign_t = (full_t != used_t);
	static const uint32 half_t = full_t >> 1u;
	static const uint32 comp_b = is_power_of_2<basic_info<t>::comp_bits>::value? basic_info<t>::comp_bits: 0;
	static const uint32 comp_d = comp_b << 1u;
	static const uint32 comp_c = full_t / comp_b;
};

template<typename t> const t global_int<t>::zero = t(0u);
template<typename t> const t global_int<t>::one  = t(1u);
template<typename t> const t global_int<t>::mone = t(-1);
template<typename t> const t global_int<t>::minval = t(global_int<t>::sign_t? (typename t::ucomp)1 << (global_int<t>::comp_b - 1): 0, 0);
template<typename t> const t global_int<t>::maxval = t(global_int<t>::sign_t? (typename t::ucomp)~0 >> 1: (typename t::ucomp)~0, (typename t::ucomp)~0);

template <uint32 bit_count, typename ut, typename st, typename udt, typename sdt> struct int_t;

template <uint32 bit_count, typename ut, typename st, typename udt, typename sdt>
struct basic_info< int_t<bit_count, ut, st, udt, sdt> >
{
	static const bool is_signed = true;
	static const bool is_integer = true;
	static const uint32 num_of_bits = bit_count;
	static const uint32 comp_bits = sizeof_ex<ut>::value;
	static const type_classes type_class = tc_custom;
	static const type_ids type_id = ti_int_t;
};

template <typename t>
inline void mathx_int_setn(t* me)
{
	for (uint32 i=0; i < global_int<t>::comp_c; ++i) me->comp = (typename t::ucomp)-1;
}


template <typename t>
inline void mathx_int_setz(t* me)
{
	for (uint32 i=0; i < global_int<t>::comp_c; ++i) me->comp = 0;
}

template <typename t, typename u>
inline void mathx_int_iTt(t* me, const u& value)
{
	if (sizeof(t) > sizeof(u))
	{
		if (basic_info<u>::is_signed && ((basic_info<u>::type_id != ti_basic_int && value < global_int<u>::zero) || value < 0))
			mathx_int_setn<t>(me);
		else
			mathx_int_setz<t>(me);

		*(u*)me->comp = value;

		return;
	}

	*me = *(t*)&value;
}

template <typename t>
inline void mathx_int_init(t* me, typename t::ucomp hi, typename t::ucomp rest)
{
	typedef global_int<t> gint;
	for (uint32 i=0; i<gint::comp_c-1; ++i) me->comp = rest;
	me->comp[gint::comp_c-1]=hi;
}

template <uint32 bit_count, typename ut, typename st, typename udt, typename sdt>
struct int_t
{
	typedef ut  ucomp;
	typedef st  scomp;
	typedef udt udcomp;
	typedef sdt sdcomp;

	typedef int_t<bit_count, ut, st, udt, sdt> t;
	typedef global_int<t> gint;

	ut comp[gint::comp_c];

	int_t() {}

	int_t(ut hi, ut rest) { mathx_int_init<t>(this, hi, rest); }

	template<typename u>
	int_t(const u& value)
	{
		if (basic_info<u>::is_integer)
			mathx_int_iTt<t, u>(this, value);
	}
};

typedef int_t<128, mathx_ucomp, mathx_scomp, mathx_udcomp, mathx_sdcomp > int128;

}

namespace std
{
	using namespace ::MathX;

	template < uint32 bit_count, typename ut, typename st, typename udt, typename sdt>
	class numeric_limits< int_t< bit_count, ut, st, udt, sdt > >
	{
	public:
		typedef int_t< bit_count, ut, st, udt, sdt > t;
		typedef global_int<t> gint;

		static const bool is_specialized = true;
		static t min() throw() { return gint::minval; }
		static t max() throw()  { return gint::maxval; }
		static const int32 digits = gint::used_t;
		static const int32 digits10 = int32(digits * 0.301f);
		static const bool is_signed = true;
		static const bool is_integer = true;
		static const bool is_exact = true;
		static const int32 radix = 2;
	};
}

int main()
{
	unsigned b = std::numeric_limits< MathX::int128 >::digits10;
}

الكود السابق لا يمكن تقليله لأكثر من ذلك، عند تنفيذه يظهر الخطأ التالي:

error C2039: 'comp_c' : is not a member of 'MathX::global_int<t>'
error C2065: 'comp_c' : undeclared identifier

الأمر الذي يحيرنى هو عندما يتم حذف تصريح المتغيرات ذات النوع t من الفئه global_int و كذلك حذف تعريفها - الموجود بأسفل الفئه - يعمل الكود بشكل سليم، حاولت كثيرا معه و للأسف لم اسطع الوصول لسبب المشكله.

الكود بالأعلي هو ناتج عملية الـ prepossessing للكود الأصلي و قمت بحذف منه الأكواد الغير متعلقه بالمشكله.

و الله ولي التوفيق