Hi,
Compiling with Visual Studio 11 Beta, a Metro project with C++/CX, I've found an issue, which can be easily reproduced with following code.
namespace test
{
class A
{
public:
int func(int y) { return 1+y;}
};
ref class B
{
public:
int func(int y) { return 1+y;}
};
template <typename TClass, typename TRes, typename TArg1>
void Deduce(TRes (TClass::*pfunc)(TArg1 arg1))
{
OutputDebugStringA(typeid(pfunc).name());
}
void testing()
{
Deduce(&A::func); // OK
Deduce(&B::func); // ERROR C2748
}
}
When a "ref class" is involved, it seems the compiler can not deduce accordingly template parameter:
//error C2784: 'void test::Deduce(TRes (__thiscall TClass::* )(TArg1),TArg1)' : could not deduce template argument for 'TRes (__thiscall TClass::* )(TArg1)' from 'int (__cdecl MobileBroadband::Details::B::* )(int)'
Providing explicitily template parameters the compilation goes fine, but it shouldn't be needed, I think:
Deduce<B, int, int>(&B:::func);
// OK
Is it a C++/CX language limitation or is it a bug?
Regards.
template deduction with a "ref class" involved
