I suspect these crashes started when the test was removed from the Windows skip list in http://trac.webkit.org/changeset/79897. http://build.webkit.org/results/Windows%207%20Release%20(WebKit2%20Tests)/r80351%20(3728)/results.html It should probably be added to the WebKit2 skipped list for now (until it can be investigated further).
Added to the skipped list in http://trac.webkit.org/changeset/80363
<rdar://problem/9087598>
It can be in connection with https://bugs.webkit.org/show_bug.cgi?id=63321. Could you try whether it is still crashing?
I just tested on Windows 7 with Release ToT (101272), and it now passes. Would you like to do the honors of removing it from the Skipped list?
(In reply to comment #4) > I just tested on Windows 7 with Release ToT (101272), and it now passes. Would you like to do the honors of removing it from the Skipped list? Why not :) Unskipped in http://trac.webkit.org/changeset/101361.