id summary reporter owner description type status milestone component version severity resolution keywords cc 6657 mac os x: signal_set does not notify the handler Thomas Sanchez chris_kohlhoff "When a signal_set is created with an io_service which was initialized with a concurrency_hint =1: No signals will be notified. A file to reproduce the bug is attached. I was not able to reproduce the bug on a Linux." Bugs closed To Be Determined asio Boost 1.49.0 Problem fixed asio signal_set signal