Re: [Boost-users] [asio] null reference in epoll_reactor

Could you possibly bisect the 1.65.1 git branch and determine precisely which commit causes the problem?

Turns out valgrind had a typo that mistakingly reports epoll_pwait() with a NULL sigmask as an error, and glibc happens to have a condition to invoke epoll_pwait() for calls to epoll_wait(), filling sigmask with NULL. The error has been fixed but not yet released ([https://sourceware.org/git/?p=valgrind.git;a=commit;h=3ac87cf9277964802ddd9af9747a10ff0b838c29)](https://sourceware.org/git/?p=valgrind.git;a=commit;h=3ac87cf9277964802ddd9af9747a10ff0b838c29). Thanks for your attention.