Subject: [boost] [chrono][ratio][boost_1_52_0_beta1] warning in user code
From: Jeff Flinn (Jeffrey.Flinn_at_[hidden])
Date: 2012-10-29 15:16:35
I've just downloaded boost_1_52_0_beta1 and get the warning below in my
user code on VC11(I'm using thread which evidently brings in the above
libs). I didn't see mention of this in trac. I'm moving forward from
1.47 and from VC8 so I'm not sure if this is an indication of some
project setting[s] of mine, or if it should be corrected in the lib?
Thanks, Jeff
6>D:\boost_1_52_0_beta1\boost/ratio/detail/overflow_helpers.hpp(136):
warning C4293: '<<' : shift count negative or too big, undefined behavior
6>
D:\boost_1_52_0_beta1\boost/ratio/detail/overflow_helpers.hpp(282) : see
reference to class template instantiation
'boost::ratio_detail::br_mul<X,Y>' being compiled
6> with
6> [
6> X=0x01,
6> Y=0x01
6> ]
6> D:\boost_1_52_0_beta1\boost/ratio/ratio.hpp(155) : see
reference to class template instantiation
'boost::ratio_detail::ratio_divide<R1,R2>' being compiled
6> with
6> [
6> R1=boost::ratio<0x01,0x0989680>,
6> R2=boost::ratio<0x01,0x03e8>
6> ]
6> D:\boost_1_52_0_beta1\boost/chrono/duration.hpp(305) : see
reference to class template instantiation 'boost::ratio_divide<R1,R2>'
being compiled
6> with
6> [
6> R1=boost::ratio<0x01,0x0989680>,
6> R2=boost::ratio<0x01,0x03e8>
6> ]
6> D:\boost_1_52_0_beta1\boost/chrono/duration.hpp(784) : see
reference to class template instantiation
'boost::chrono::detail::duration_cast<FromDuration,ToDuration>' being
compiled
6> with
6> [
6>
FromDuration=boost::chrono::duration<int_least64_t,boost::ratio<0x01,0x0989680>>,
6> ToDuration=boost::chrono::milliseconds
6> ]
6> D:\boost_1_52_0_beta1\boost/chrono/ceil.hpp(27) : see
reference to function template instantiation
'boost::chrono::duration<Rep,Period>
boost::chrono::duration_cast<To,int_least64_t,boost::ratio<N,D>>(const
boost::chrono::duration<Rep,boost::ratio<N,D>> &)' being compiled
6> with
6> [
6> Rep=int_least64_t,
6> Period=boost::milli,
6> To=boost::chrono::milliseconds,
6> N=0x01,
6> D=0x0989680
6> ]
6>
D:\boost_1_52_0_beta1\boost/thread/win32/basic_timed_mutex.hpp(199) :
see reference to function template instantiation 'To
boost::chrono::ceil<boost::chrono::milliseconds,int_least64_t,boost::ratio<N,D>>(const
boost::chrono::duration<Rep,Period> &)' being compiled
6> with
6> [
6> To=boost::chrono::milliseconds,
6> N=0x01,
6> D=0x0989680,
6> Rep=int_least64_t,
6> Period=boost::ratio<0x01,0x0989680>
6> ]