The first will break compilation if someone uses MinGW-w64 CRT with secure APIs
support.
This is because we have two declaration of memcpy_s imported in global
namespace (line 66):
USING_NAMESPACE(CryptoPP)
The second also break compilation if someone uses MinGW-w64 CRT v 3.x with
secure APIs s
> So I suggest a change as follow:
> #if defined(__MINGW32__)
> // avoid ambiguity if we have two versions of memcpy_s
> #if !defined(MINGW_HAS_SECURE_API) || (MINGW_HAS_SECURE_API + 0 == 0) ||
> defined(CRYPTOPP_WANT_SECURE_LIB)
> using CryptoPP::memcpy_s;
> #else
> using ::memc
