Aaron W. LaFramboise wrote:

I'm trying to use Daniel James'es unordered containers, from the vault, with Interprocess:

typedef ip::allocator T_allocator; typedef typedef boost::unordered_set T_set;

I get this error:

boost\unordered\detail\hash_table_impl.hpp(419) : error C2039: 'destroy' : is not a member of 'boost::interprocess::allocator'

The method 'destroy' is missing in CVS, even though its still present in the documentation at http://cloud.prohosting.com/newfunk/boost/libs/interprocess/doc/html/boost/i....

Is there some other general-purpose allocator that would work here? Why is this method missing?

The library working group of the C++ committee is likely to ignore allocator::destroy(), allocator::construct() and allocator::address() from containers (I don't know if this resolution is firm or it's just an intention). See the proposal here: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2257.html I removed those from Interprocess allocators since I thought nobody was using them (I haven't received any report of a user-defined container compatible with Boost.Interprocess). Daniel's unordered containers package and Interprocess are not in sync, mainly because it seems that unordered package is taking too long to be in Boost. That being said, I might put those members again for backwards compatibility, but I would prefer modifying unordered classes to avoid calling those functions if the committee decides to take them out from allocators. Regards, Ion