TZUTC: -0700   
   MSGID: 53329.syncprog@1:103/705 2d677fd8   
   PID: Synchronet 3.21a-Linux master/88b423313 Sep 29 2025 GCC 12.2.0   
   TID: SBBSecho 3.30-Linux master/86829317e Oct 26 2025 GCC 12.2.0   
   BBSID: VERT   
   CHRS: UTF-8 4   
   FORMAT: flowed   
   https://gitlab.synchro.net/main/sbbs/-/commit/acfdd2f82af3bd893f217aa5   
   Modified Files:   
   	src/doors/clans-src/src/door.c fight.c quests.c system.c   
   Log Message:   
   Handle libraries that call exit()   
      
   OpenDoors will call exit() under you sometimes, and there's really   
   no way to stop it.  That means to clean up the semaphore, we need   
   to use an atexit() handler.   
      
   System_Close() already does everything we need, I just need to make   
   sure nothing is calling exit() to avoid it now. :(   
      
   So, I've split it into System_CloseAtExit() which should only be   
   called from exit() and System_Close() which calls it. It tries to   
   detect if exit() was called from System_CloseAtExit() and falls back   
   to abort() with a diagnostic, since abort() is the thing most likely   
   to flush buffers but not call atexit() handlers.   
   --- SBBSecho 3.30-Linux   
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