[Mapguide-trac] [mapguide-trac] #2578: AGG renderer segfaults on Ubuntu 14.04

[MapGuide Open Source]

#2578: AGG renderer segfaults on Ubuntu 14.04
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   Reporter:  jng                |      Owner:  jng
       Type:  defect             |     Status:  new
   Priority:  high               |  Milestone:  3.0
  Component:  Rendering Service  |    Version:  3.0.0
   Severity:  blocker            |   Keywords:
External ID:                     |
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 The AGG renderer segfaults after a few successive pans and zooms on Ubuntu
 14.04

 This is due to the use of memcpy() in agg::font_cache_pool::font(), which
 when run under valgrind reports that the call to memcpy() involves
 overlapped source and destination parameters. I believe the segfault is
 the result of attempting to free part of a different font_cache pointer in
 the m_fonts array.

 Attached is a patch that replaces the memcpy() call with memmove(). The
 segfault is no longer observable.

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Ticket URL: <http://trac.osgeo.org/mapguide/ticket/2578>
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