That backtrace is not horribly helpful.. was it processing a truly NULL buffer of size 10, or did it just happen to begin with a \0? If the crash reoccures please reply.
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++[>++++++<-]>[<++++++>-]<.>++++[>+++++<-]>[<
+++++>-]<+.+++++++..+++.>>+++++[<++++++>-]<+
+.<<+++++++++++++++.>.+++.------.--------.>+.
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