Eric Niebler wrote:
alfC wrote:
Is this example, contained in the boost.Proto manual supposed to compile?
#include<complex> #include <boost/proto/core.hpp> #include <boost/proto/context.hpp> #include <boost/proto/debug.hpp> #include<boost/proto/extends.hpp>
template<class T, class Dummy = boost::proto::is_proto_expr> struct my_complex { BOOST_PROTO_EXTENDS( typename boost::proto::terminal<std::complex<T> >::type , my_complex<T> , boost::proto::default_domain ) };
int main() { my_complex<int> c0, c1;
c0 + c1; // OK, operator+ found now! }
I get this error (with gcc 4.3 and gcc 4.4): proto_complex.cpp:10: error: expected nested-name-specifier before ‘typename’ proto_complex.cpp:10: error: two or more data types in declaration of ‘proto_base_expr’ proto_complex.cpp:10: error: ‘proto_base_expr’ has not been declared proto_complex.cpp:10: error: ‘proto_base_expr’ has not been declared
I seem to recall seeing this error before with gcc. I think it's a compiler bug, but I haven't investigated.
I take it back. This is a bug in Proto. I'll fix it. -- Eric Niebler BoostPro Computing http://www.boostpro.com