[screen-devel] [bug #42178] byobu >= 5.77 crashes screen server process on pressing Ctrl-A c

[Axel Beckert]

URL:
  <http://savannah.gnu.org/bugs/?42178>

                 Summary: byobu >= 5.77 crashes screen server process on
pressing Ctrl-A c
                 Project: GNU Screen
            Submitted by: abe
            Submitted on: Mi 23 Apr 2014 15:58:18 GMT
                Category: Crash/Freeze/Infloop
                Severity: 3 - Normal
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: Cur Dev Sources
           Fixed Release: None
         Planned Release: None
           Work Required: None

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Details:

Initially reported in Ubuntu at
https://bugs.launchpad.net/ubuntu/+source/screen/+bug/1274720 and also tracked
in Debian at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=745631

See http://byobu.co/ for more information about byobu, a screen and tmux
wrapper. To reproduce at least byobu 5.77 is needed. 5.70 and lower versions
are known to not trigger this issue.

The server processs of a GNU Screen session can be crashed by

1. rm -rf ~/.byobu
2. calling byobu-screen
3. pressing Ctrl-A to get byobu's Ctrl-A behaviour menu
4. choosing "screen behaviour"
5. pressing Ctrl-A c (some other Ctrl-A sequences work also)

Reproducible with the following versions of GNU Screen:

* 4.2.0 (as patched in Debian tbh.)
* commit db59704 (of 2012, as currently in Debian Stable)
* current HEAD of the screen-v4 branch (commit fe8103c) without any further
patches (just autoreconf + configure + make)

I haven't yet found a minimal .screenrc which triggers this issue without
calling byobu first. But since there's a crash involved, it can't be byobu's
fault alone...




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