spidermonkey crash call stack

callstack.txt

#0 0x659629	js::Interpret(JSContext*, JSStackFrame*, unsigned int, JSInterpM
ode) () (??:??)
#1 0x490925	js::RunScript(JSContext*, JSScript*, JSStackFrame*) () (??:??)
#2 0x4927e2	js::Invoke(JSContext*, js::CallArgs const&, unsigned int) () (??
:??)
#3 0x42a0c4	array_extra(JSContext*, ArrayExtraMode, unsigned int, js::Value*
) () (??:??)
#4 0x65f581	js::Interpret(JSContext*, JSStackFrame*, unsigned int, JSInterpM
ode) () (??:??)
#5 0x490925	js::RunScript(JSContext*, JSScript*, JSStackFrame*) () (??:??)
#6 0x4927e2	js::Invoke(JSContext*, js::CallArgs const&, unsigned int) () (??
:??)
#7 0x492ccb	js::ExternalInvoke(JSContext*, js::Value const&, js::Value const
&, unsigned int, js::Value*, js::Value*) () (??:??)
#8 (	0x0000000000418ce2 in JS_CallFunctionName() (??:??)
#9 0x40d0b0	callIntoJsRender(jsEnv=..., gfxEnv=..., evEnv=..., msElapsed=4) 
(/home/jeff/src/sugs/worker/frontend.cpp:76)
#10 0x40d18c	FrontendWorker::doWork(this=0xd09550) (/home/jeff/src/sugs/worke
r/frontend.cpp:97)
#11 0x4096fc	main() (/home/jeff/src/sugs/main.cpp:100)