[Bug c++/63356] Compilation failure where clang does not have problems

[fiesh at zefix dot tv]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63356

--- Comment #14 from fiesh at zefix dot tv ---
Bounty: EUR 150

I'd like to try something new and place a bounty on this issue.  In order to
collect it, you have to provide a patch that is accepted into 4.9 and 5.  You
also need to be able to write a bill with explicit VAT (we are based in
Germany).  Alternatively, I'll donate the money to any charitable use of your
choice, again subject to requiring a receipt from the charity receiving it.