id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1216	problems compiling template class using is_class and is_arithmetic	sheff	John Maddock	"Consider this code:

{{{
class C
{
public:
	template <typename T>
	typename boost::enable_if_c<boost::is_class<T>::value, void>::type 
	f(T& t)
	{

	}

	template <typename T>
	typename boost::enable_if_c<boost::is_arithmetic<T>::value, void>::type 
	f(T& t)
	{

	}
};

void main()
{
	C c;
}
}}}

it compiles without fault, but the following code:

{{{
class A {};

template <class T1>
class B : public T1
{
public:
	template <typename T2>
	typename boost::enable_if_c<boost::is_class<T2>::value, void>::type 
	f(T2& t)
	{

	}

	template <typename T2>
	typename boost::enable_if_c<boost::is_arithmetic<T2>::value, void>::type 
	f(T2& t)
	{

	}
};

void main()
{
	B<A> a;
}
}}}

fails to compile"	Bugs	closed	To Be Determined	type_traits	Boost 1.34.1	Problem	fixed