[Bug c++/100629] Regression from 10 symbol mismatch between class definition and use with/without optimization

[mckelvey at maskull dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100629
--- Comment #12 from James McKelvey <mckelvey at maskull dot com> ---
I don't see _GLIBCXX_USE_CXX11_ABI anywhere in the code.