`valgrind st -f mono-2 cat full-bmp.txt' [1] Yields quite a few invalid reads from freed blocks, the issue is related to cache management. In the real world those dangling pointer issues lead to segfaults or X11 errors (eventually)
[1] http://www.cl.cam.ac.uk/~mgk25/ucs/full-bmp.txt -- mailto:moos...@gmail.com