In the example,
BoundingBoxComparision +000009
the number indicates that the address is 9 further than the defined symbol BoundingBoxComparision.
In the context of a stack trace, this would indicate 9 bytes (or possibly 9 words) into the routine named BoundingBoxComparision . But more generally in debugging, memory addresses for data might be displayed as an offset from a symbol that has been declared "global" or "extern". Some debuggers are also able to give offsets relative to variables that are on stack frames.
