[regression] error: no matching constructor for initialization of 'boost::posix_time::milliseconds'

[yurivict]

Version 1.2.637 fails to build on FreeBSD 11.1:

/usr/ports/devel/RStudio/work/rstudio-1.2.637/src/cpp/core/ExponentialBackoff.cpp:71:36: error: no matching constructor for initialization of 'boost::posix_time::milliseconds' (aka 'subsecond_duration<boost::posix_time::time_duration, 1000>')
   boost::posix_time::milliseconds nextWait(initialWait_.total_milliseconds() * std::pow(2, totalNumTries_));
                                   ^        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/boost/date_time/time_duration.hpp:270:30: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'double' to 'const boost::date_time::subsecond_duration<boost::posix_time::time_duration, 1000>' for 1st argument
  class BOOST_SYMBOL_VISIBLE subsecond_duration : public base_duration
                             ^
/usr/local/include/boost/date_time/time_duration.hpp:270:30: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'double' to 'boost::date_time::subsecond_duration<boost::posix_time::time_duration, 1000>' for 1st argument
/usr/local/include/boost/date_time/time_duration.hpp:286:59: note: candidate template ignored: disabled by 'enable_if' [with T = double]
                                typename boost::enable_if<boost::is_integral<T>, void>::type* = 0) :
                                                          ^

boost-libs-1.67.0_1

[yurivict]

This issue is found while trying to update the FreeBSD port for RStudio. It blocks the update.

[kevinushey]

Thanks for the bug report. This appears to be caused by the upgrade to Boost 1.67.0 -- I'll take a look.

[kevinushey]

This commit should fix the issue:

85896f3

Are you able to include that as a patch in the version of RStudio you build on FreeBSD?

[yurivict]

Yes, I will do this tonight.
Thanks!

[yurivict]

I've included the patch, thanks!