[Bug c++/60750] [4.8/4.9 Regression] double free after std::move on string inside throw when compiled with optimization

[trippels at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60750

--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
-fno-ipa-pure-const "fixes" the issue.