After upgrading from boost 1.71 to 1.72 the following simple example now leads to a compilation error: #include <boost/asio/spawn.hpp> int main() { return 0; } The compilation errors point to a missing boost::begin and boost::end functions: /usr/local/include/boost/coroutine/asymmetric_coroutine.hpp:2364:10: error: no member named 'begin' in namespace 'boost'; did you mean simply 'begin'? { return boost::begin( c); } It goes on for a while, but I think the problem is clear. The source of this problem seems that between 1.71 and 1.72 in boost/coroutine/asymmetric_coroutine.hpp the include of boost/range.hpp was removed, which leads to these functions being undefined. To me it looks like a clear bug, but the fact that this include was removed points to some deliberate action. Am I missing something?