[kmail2] [Bug 375204] New: Kmail doesn't quit

[John Veitch]

https://bugs.kde.org/show_bug.cgi?id=375204

            Bug ID: 375204
           Summary: Kmail doesn't quit
           Product: kmail2
           Version: 5.2.3
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: NOR
         Component: UI
          Assignee: kdepim-bugs at kde.org
          Reporter: john at veitch.me.uk
  Target Milestone: ---

Created attachment 103470
  --> https://bugs.kde.org/attachment.cgi?id=103470&action=edit
backtrace of kmail threads after Quitting

Selecting Quit from the file menu closes the main window and system tray icon
but the kmail process does not exit.

I've attached a text file which might help. After hitting Quit and waiting a
minute, I launched gdb and attached to the kmail process. The file contains the
backtrace for the active threads, which all appear to be in poll() or
pthread_cond_wait().

I'm using kmail on Kubuntu 16.10, package version 4:16.04.3-0ubuntu2, on amd64,
but the bug has been happening for a while (I think since upgrading to 16.10).
It's 100% repeatable so I can help investigate if given instructions. There is
no message on stdout or stderr when I hit quit. If I kill the process manually
there is no terminal output, and I can start the program again as normal.

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