TZUTC: -0700   
   MSGID: 52642.syncprog@1:103/705 2d393ba7   
   PID: Synchronet 3.21a-Linux master/869dac47e Sep 14 2025 GCC 12.2.0   
   TID: SBBSecho 3.29-Linux master/f60b34fad Sep 22 2025 GCC 12.2.0   
   BBSID: VERT   
   CHRS: UTF-8 4   
   FORMAT: flowed   
   https://gitlab.synchro.net/main/sbbs/-/commit/006a6db5545a296f3c7aa44c   
   Modified Files:   
   	src/conio/bitmap_con.c   
   Log Message:   
   Hang and scroll up fixes   
      
   This fixes ticket 207 by fixing the partial scrollup optimization   
   in bitmap output that scrolls down the screen, the scrolls up the   
   part that should not have moved.   
      
   While testing this change however, I managed to reproduce two unlikely   
   but possible deadlocks since I was rebuilding all the software on   
   my computer at the time and it was under very heavy load.   
      
   One of these issues was apparently found by Coverity and explcitly   
   suppressed... possibly this suppressed the other as a side-effect   
   as well.   
   --- SBBSecho 3.29-Linux   
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