Could you please provide a reproducible test case?
Please include the code and how to build it.
EDIT: I'm guessing you are referring to examples/traceback.cpp(?)
Can you please provide the build flags used to build the library and the example? If the build of MinGW you are using targets x64, I am unable to address this for the time being as I do not have a 64bit Windows OS.
If the information above isn't provided, I can't reproduce the problem and will have to close this bug (if only temporarily) as 'invalid'. I have to be a bit ruthless in this regard as I have a lot of projects to support.