On Thu, Oct 21, 2010 at 07:49:29AM -0400, David Abrahams wrote:
At Wed, 20 Oct 2010 12:08:28 -0700, Marshall Clow wrote:
Yeah - it's complaining about a method in boost::array:
// Specific for boost::array: simply returns its elems data member. template <typename T, std::size_t N> T(&get_c_array(boost::array<T,N>& arg))[N] { return arg.elems; }
My guess is it can't parse the function-returning-reference-to-array syntax. You can try this instead:
namespace detail { template <typename T, std::size_t N> struct c_array { typedef T[N] type; }; }
// Specific for boost::array: simply returns its elems data member. template <typename T, std::size_t N> typename detail::c_array<T,N>::type& get_c_array(boost::array<T,N>& arg) { return arg.elems; }
That code, together with the corresponding const variant [1] of the second function, makes building --with-math get past the previous trouble spots without problems. As this machine is horribly slow, I haven't finished building yet, but it seems to fix the problem the reporter reported in his report. [1] ---8<--- // Specific for boost::array: simply returns its elems data member. template <typename T, std::size_t N> const typename detail::c_array<T,N>::type& get_c_array(const boost::array<T,N>& arg) { return arg.elems; } ---8<--- -- Lars Viklund | zao@acc.umu.se