on Tue Dec 16 2008, "Robert Ramey" <ramey-AT-rrsd.com> wrote:
John Maddock wrote:
Folks, Dave A. asked for a config macro to detect the presence of std conforming <unordered_set> and <unordered_map>.
However, I've run into an unexpected issue: it appears that with gcc-4.3.x you cannot include both <unordered_set> and <ext/hash_set> as attempting to do so leads to endless errors inside the <ext/*> headers :-( Including either one of the headers is just fine though.
So... how should we handled this? Not define BOOST_HAS_HASH when <unordered_set> *is* available?
That would make it impossible to read archives which contain hashed pointers under the current system.
Are you sure? I'd be a bit surprised if hash_set<T>'s serialized data couldn't be read into an unordered_set<T>. -- Dave Abrahams BoostPro Computing http://www.boostpro.com