on 64-bits Debug. I can locally reproduce this stack-trace after 10 iterations of fast/files: http://webkit-bots.igalia.com/amd64/svn_77474.core-when_1296735359-_-who_DumpRenderTree-_-why_11.trace.html Will skip the bug and try to come up with a patch.
*** This bug has been marked as a duplicate of bug 53104 ***