bzbarsky%mit.edu b5ffdbb1ea Just throw if a null visitor is passed. Bug 309459, patch by Adam Guthrie
<ispiked@gmail.com>, r+sr=darin


git-svn-id: svn://10.0.0.236/trunk@185753 18797224-902f-48f8-a5cc-f745e15eee43
2005-12-07 05:35:39 +00:00
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2005-04-05 17:40:32 +00:00