id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10159	GCC 4.4 error sorry, unimplemented	Niklas Angare <li51ckf02@…>	viboes	"A bunch of tests fail to compile on GCC 4.4 with -std=gnu++0x. Specifically it's my test runners NA-QNX650-SP1* on QNX 6.5.0 which are the only ones running that compiler configuration at the moment.

For example async!__async_executor_p fails to compile with this message:
{{{
In file included from ../libs/thread/test/sync/futures/async/async_executor_pass.cpp:28:
../boost/thread/future.hpp: In function 'boost::future<Rp> boost::async(Executor&, R (*)(ArgTypes&& ...), ArgTypes&& ...)':
../boost/thread/future.hpp:3850: sorry, unimplemented: cannot expand 'typename boost::decay<ArgTypes>::type ...' into a fixed-length argument list
../boost/thread/future.hpp:3850: error: invalid type in declaration before ';' token
../boost/thread/future.hpp:3851: error: 'BF' is not a class type
../boost/thread/future.hpp:3851: error: 'result_type' in class 'BF' does not name a type
../boost/thread/future.hpp:3851: error: invalid type in declaration before ';' token
../boost/thread/future.hpp: In function 'boost::future<typename boost::result_of<typename boost::decay<F>::type(typename boost::decay<ArgTypes>::type ...)>::type> boost::async(Executor&, F&&, ArgTypes&& ...)':
../boost/thread/future.hpp:3867: sorry, unimplemented: cannot expand 'typename boost::decay<ArgTypes>::type ...' into a fixed-length argument list
../boost/thread/future.hpp:3867: error: invalid type in declaration before ';' token
../boost/thread/future.hpp:3868: error: 'BF' is not a class type
../boost/thread/future.hpp:3868: error: 'result_type' in class 'BF' does not name a type
../boost/thread/future.hpp:3868: error: invalid type in declaration before ';' token
../boost/thread/future.hpp: In member function 'void boost::detail::shared_state_nullary_task<Rp, Fp>::operator()() [with Rp = int, Fp = int]':
../boost/thread/detail/nullary_function.hpp:52:   instantiated from 'void boost::detail::nullary_function<void()>::impl_type<F>::call() [with F = boost::detail::shared_state_nullary_task<int, int>]'
../libs/thread/test/sync/futures/async/async_executor_pass.cpp:251:   instantiated from here
../boost/thread/future.hpp:3692: error: '((boost::detail::shared_state_nullary_task<int, int>*)this)->boost::detail::shared_state_nullary_task<int, int>::f_' cannot be used as a function
}}}

For example ex_with_lock_guard fails to compile with this message:
{{{
In file included from ../libs/thread/test/../example/with_lock_guard.cpp:13:
../boost/thread/with_lock_guard.hpp: In instantiation of 'decltype (func((#'template_id_expr' not supported by pp_c_expression#)(boost::with_lock_guard::args)...)) boost::with_lock_guard(Lockable&, Function&&, Args&& ...) [with Lockable = boost::mutex, Function = void (&)(), Args = ]':
../boost/thread/with_lock_guard.hpp:52:   instantiated from here
../boost/thread/with_lock_guard.hpp:56: sorry, unimplemented: mangling template_id_expr
}}}
"	Bugs	closed	Boost 1.57.0	thread	Boost Development Trunk	Problem	fixed