[Boost-users] [Thread] this_tread::sleep won't compile with gcc, "no match for operator+"

Subject: [Boost-users] [Thread] this_tread::sleep won't compile with gcc, "no match for operator+"
From: Alexey Malakhov (malakhov_at_[hidden])
Date: 2011-05-30 12:48:52

Hi! This is most probably a "newbie question", but I really don't see what
exactly wrong I'm doing, so will appreciate any inputs.

Basically, what I'm trying to do is:

    using namespace boost::posix_time;
    using namespace boost::this_thread;

    time_duration td = milliseconds(2000);
    sleep(&td);

And it works ok with Visual Studio and Windows. Once I get it to linux and
try to compile with gcc, this is what I get:

g++ -c -Wall -I/home/gsed/boost/ main.cpp -o main.o
In file included from /home/gsed/boost/boost/thread/thread.hpp:17:0,
                 from includes.h:12,
                 from main.cpp:1:
/home/gsed/boost/boost/thread/pthread/thread_data.hpp: In function void
boost::this_thread::sleep(const TimeDuration&) [with TimeDuration =
boost::posix_time::time_duration*]:
main.cpp:47:11:   instantiated from here
/home/gsed/boost/boost/thread/pthread/thread_data.hpp:138:13: error: no
match for operator+ in boost::get_system_time() + rel_time
/home/gsed/boost/boost/date_time/time.hpp:139:15: note: candidates are:
time_type boost::date_time::base_time<T,
time_system>::operator+(boost::date_time::base_time<T,
time_system>::date_duration_type&) const [with T = boost::posix_time::ptime,
time_system =
boost::date_time::counted_time_system<boost::date_time::counted_time_rep<boost::posix_time::millisec_posix_time_system_config>
>, time_type = boost::posix_time::ptime, boost::date_time::base_time<T,
time_system>::date_duration_type = boost::gregorian::date_duration]
/home/gsed/boost/boost/date_time/time.hpp:159:15: note:
time_type boost::date_time::base_time<T,
time_system>::operator+(boost::date_time::base_time<T,
time_system>::time_duration_type&) const [with T = boost::posix_time::ptime,
time_system =
boost::date_time::counted_time_system<boost::date_time::counted_time_rep<boost::posix_time::millisec_posix_time_system_config>
>, time_type = boost::posix_time::ptime, boost::date_time::base_time<T,
time_system>::time_duration_type = boost::posix_time::time_duration]
/home/gsed/boost/boost/date_time/posix_time/date_duration_operators.hpp:75:3:
note:                 boost::posix_time::ptime
boost::posix_time::operator+(const boost::posix_time::ptime&, const
boost::gregorian::years&)
/home/gsed/boost/boost/date_time/posix_time/date_duration_operators.hpp:31:3:
note:                 boost::posix_time::ptime
boost::posix_time::operator+(const boost::posix_time::ptime&, const
boost::gregorian::months&)
make: *** [main.o] Error 1

ie it's trying to perform a boost::posix_time::ptime + time_duration
operation, but for some reason can't decide between
operator+(boost::date_time::base_time<T, time_system>::date_duration_type&)
and
operator+(boost::date_time::base_time<T, time_system>::time_duration_type&)

And I'm absolutely not sure why.

Win version works well I guess because there's another include file used and
the whole thing is arranged differently.

Again, any inputs or advice are greatly appreciated. Thanks!

-- 
Take care,
Alexey Malakhov