[Bug libstdc++/66262] [REGRESSION] testsuite failure with libstdc++ (gcc-5) and g++-4.9 together

[costamagnagianfranco at yahoo dot it]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66262

--- Comment #15 from Gianfranco <costamagnagianfranco at yahoo dot it> ---
Thanks to all for the suggestions! Apparently this is what I presumed from the
begin (I read a lot about ABI changes in gcc-5)

I'll try to figure out with doko what is the best approach for fixing this!
thanks to all again,

G.