[Bug c++/86400] [8/9 regression] set<string>::set<char (*)[2]) constructor does not work with array argument

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86400

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It fails with -O1 -foptimize-strlen -fipa-sra -finline-small-functions