Hello, ~panomitrius, thanks for reporting this bug!
While you say there is no targeted fix upstream, there is this commit:
https://github.com/tmux/tmux/commit/881bec958e2fd9093ed2c8fd8f934196f6afa7da
which adds the check. The commit seems to be included from 3.7a, so I
suppose 3.7b-1 (in stonking+tenacious) should not be affected.
Noble and Resolute are affected though, and your test script makes a
nice case for testing and backporting the fix.
** Tags added: server-todo
** Also affects: tmux (Ubuntu Stonking)
Importance: Undecided
Status: New
** Also affects: tmux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: tmux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: tmux (Ubuntu Resolute)
Importance: Undecided
Status: New
** Changed in: tmux (Ubuntu)
Status: New => Fix Released
** Changed in: tmux (Ubuntu Stonking)
Status: New => Fix Released
** Changed in: tmux (Ubuntu Noble)
Status: New => Triaged
** Changed in: tmux (Ubuntu Resolute)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/2172659
Title:
tmux server crashes (SIGSEGV in control_check_subs_timer) when an
iTerm2 tmux -CC client detaches
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