[Bug target/67478] gcc-5.1.0/gcc-5.2.0 undefined symbol std::__once_callable in AIX 6.1

[qshanz at cn dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67478

--- Comment #9 from Qingshan Zhang <qshanz at cn dot ibm.com> ---
Or do we have any work round for this issue ? Thank you.