[Bug c++/123738] [16 Regression] "is not a constant expression" in code using a string literal operator template since r16-6431

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123738

--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Thanks! When this lands in fedora I'll try re-enabling the tests in the
libreoffice rpm