I've uploaded another version (0.5.0) which accepts an stack (instead of an stack-allocator) which will be stored (moved) inside boost::context. the implicit interface of the stack looks like: class my_stack { public: void * address() const; std::size_t size() const; }; boost::protected_stack stack( 1024); boost::context ctx( boost::context::create( my_fn, 0, stack) ); Oliver