[Bug libstdc++/53673] Add magic weak symbol to indicate C++ standard setting (C++03, C++11 etc) to help debug ABI problems

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53673

--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-06-18 00:06:29 UTC ---
I'm ambivalent.