Re: Invalid C++ or bug in GCC 4.8
??????????????, 27 ???????? 2013 ??., 3:50:01 UTC+4 ????????????????????????
marcel...@googlemail.com ??????????????:
Below is a completely stripped down version of the code. Is this illegal
C++ code, or is this a bug in GCC 4.8?
template <typename Signature, typename TypeId> class ObjectFactory;
template<typename Base , typename TypeId>
class ObjectFactory<Base (), TypeId> { };
struct Abstract { virtual ~Abstract() = 0; };
struct Concrete : Abstract { };
typedef ObjectFactory< Abstract(), int> MyFactory;
</code>
When compiling with GCC 4.8 I get the following error:
Eabstract-class-type.cc:10:33: error: ???type name??? declared as
function returning an abstract class type
typedef ObjectFactory< Abstract(), int> MyFactory;
You cannot create an object of an abstract class type, so there cannot
be a function with such return type. The compiler error message is
completely reasonable here.
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