Subject: debug-timer-check fails on macOS 11.6.6
From: Mattias Engdegård <[email-masked]>
To: [email-masked]
Date: Wed, 25 May 2022 12:46:39 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

Built with enable-checking, (debug-timer-check) returns nil.
It turns out that debug_timer_callback is never actually called, but I haven't dug further than that.

This is on macOS 11.6.6 and HAVE_TIMERFD is not defined. Does this code path work on other systems?