[Bug libstdc++/114865] [13/14/15 Regression] std::atomic::compare_exchange_strong seems to hang under GCC 13 on Ubuntu 23.04

[pdimov at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114865

--- Comment #9 from Peter Dimov <pdimov at gmail dot com> ---
Oh, my mistake. C++14 does mov QWORD, and C++11 does mov WORD.