id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1243	ODR violation by boost::detail::lightweight_mutex	Joaquín M López Muñoz	Peter Dimov	"boost/detail/flyweight_mutex.hpp implements a mutex class based on a
Win32 CRITICAL_SECTION or using Pthreads according to the
following pp logic:

{{{
#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
  // based on CRITICAL_SECTION
#elif defined(BOOST_HAS_PTHREADS)
  // based on Pthreads
}}}

which violates ODR on those environments, such as Cygwin,
where WIN32 or similar is not a predefined macro but depends
on the inclusion of <windows.h>.

A more detailed discussion of the issue at:

http://lists.boost.org/Archives/boost/2007/09/127115.php"	Bugs	closed	Boost 1.35.0	None	Boost 1.34.1	Problem	fixed