[Weechat-dev] [bug #39090] attempt to malloc() value close to 2^64 when scrolling with mouse

[Joel Taylor]

URL:
  <http://savannah.nongnu.org/bugs/?39090>

                 Summary: attempt to malloc() value close to 2^64 when
scrolling with mouse
                 Project: WeeChat
            Submitted by: otters
            Submitted on: Tue 28 May 2013 02:56:05 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 0.4.1
                IRC nick: otters

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Details:

When scrolling up in a buffer using my mouse:


weechat-curses(1196) malloc: *** mmap(size=18446744073690892192) failed (error
code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug


gets dumped into the current display (screenshot: http://puu.sh/32IKt.png). If
I force weechat to redraw, it goes away. It doesn't look like anything
sinister is happening when this error occurs: weechat functions properly and
memory usage looks fine.

Pretty sure it's happening when the top of the userlist the client received
when I joined passes the halfway point in the current buffer.

The error happens in all the rooms I'm in with more than about 200 users,
across multiple networks.




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