[Bug libstdc++/105031] wrong constexpr if statement in basic_stacktrace::operator=(basic_stacktrace&&)

[hewillk at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105031

--- Comment #1 from 康桓瑋 <hewillk at gmail dot com> ---
Hey, Jonathan, would you mind taking a look?