id summary reporter owner description type status milestone component version severity resolution keywords cc 1713 no definitions for copy ctor and assignment operator for basic_condition_variable dthomas@… Anthony Williams "In a MSVC 9.0 project of ours, linker errors regarding missing definitions for boost::detail::basic_condition_variable::basic_condition_variable(const basic_condition_variable& other) and boost::detail::basic_condition_variable::operator=(const basic_condition_variable& other). Either there needs to be definitions for these member functions or there declarations need to be in a private scope of the class. Not having checked the documentation (if any) for proper usage, I tried with putting them in a private scope, resulting in a successful build. The specific file is boost/thread/win32/basic_condition_variable.hpp. I have not checked the other basic_condition_variable.hpp files." Bugs closed Boost 1.36.0 threads Boost Development Trunk Problem fixed thread basic_condition_variable ctor assignment