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ggaren@apple.com authored
Rubber-stamped by Cameron Zwarich. Fixed https://bugs.webkit.org/show_bug.cgi?id=21225 Machine::retrieveLastCaller should check for a NULL codeBlock In order to crash, you would need to call retrieveCaller in a situation where you had two host call frames in a row in the register file. I don't know how to make that happen, or if it's even possible, so I don't have a test case -- but better safe than sorry! * VM/Machine.cpp: (JSC::Machine::retrieveLastCaller): git-svn-id: http://svn.webkit.org/repository/webkit/trunk@37087 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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