g++ version 6.2.0 can't compile 4.8 code

Hello Mike,

thank You for the last posting to me.
Today, I have the following Problem:
(No Makefile changes of my project):
Yesterday, I download, compile, and install the g++ Version 6.2.0.
also I update from 4.8. to 6.2.
Under 4.8, I had no problems, but nowadays, with version 6.2,
I get error messages:

https://paste.fedoraproject.org/490630/60554148/

with this code:

https://paste.fedoraproject.org/490632/60630148/

I know, You want a minimal testcase, but I think, the thing is the
structure of boost qi?

Can you have a look?

Thank You very much
Jens


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