K 10 svn:author V 7 davidxu K 8 svn:date V 27 2008-03-04T04:28:59.000000Z K 7 svn:log V 269 If a new thread is created, it inherits current thread's signal masks, however if current thread is executing cancellation handler, signal SIGCANCEL may have already been blocked, this is unexpected, unblock the signal in new thread if this happens. MFC after: 1 week END