id summary reporter owner description type status milestone component version severity resolution keywords cc 4210 Changes in boost::exception - 1.43 causing exception to be thrown before main robertyull@… Emil Dotchevski "Submitting per Emil Dotchevski's suggestion based on a discusion on boost-users. Changes to boost::exception in 1.43 can cause an exception to be thrown during static initialization (before main() is called). I've attached code that will produce the behavior. The exception is caught, but causes Microsoft Visual Studio to halt if ""break when std::exception is thrown"" is enabled in the debugger." Bugs closed Boost 1.43.0 exception Boost 1.44.0 Problem fixed