I had another look and that isn’t quite true. It does define them, but only if __clang__ is defined. I tried removing that #ifdef (and the std::begin/end) and that works on my GCC-4.8.1 install as well. -- Johannes S. Mueller-Roemer, MSc Wiss. Mitarbeiter - Interactive Engineering Technologies (IET) Fraunhofer-Institut für Graphische Datenverarbeitung IGD Fraunhoferstr. 5 | 64283 Darmstadt | Germany Tel +49 6151 155-606 | Fax +49 6151 155-139 johannes.mueller-roemer@igd.fraunhofer.de | www.igd.fraunhofer.de From: Boost-users [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Oliver Kowalke Sent: Thursday, August 28, 2014 17:14 To: boost-users Subject: Re: [Boost-users] Cannot use Boost.Croutines with range based for asymmetric_coroutine.hpp already contains boost::coroutines::begin() and boost::coroutines::end()