On Wed, Jul 17, 2024 at 3:08 AM Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
> Ugh. I tried to follow what's going on in that cygwin code, but I gave
> up pretty quickly. It depends on a mutex, but I didn't see the mutex
> being defined or initialized anywhere.
https://github.com/cygwin/cygwin/blob/cygwin-3.5.3/winsup/cygwin/fhandler/socket_inet.cc#L217C1-L217C77
Not obvious how it'd be deadlocking (?), though... it's hard to see
how anything between LOCK_EVENTS and UNLOCK_EVENTS could escape/return
early. (Something weird going on with signal handlers? I can't
imagine where one would call poll() though).