[Bug libstdc++/110900] std::string initializes SSO object subfield without making the SSO object active in the union

[danakj at orodu dot net via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110900

--- Comment #4 from danakj at orodu dot net ---
The error message is the same as 110158 but to be clear the std::string is not
in a union. The error message is about the union _inside_ std::string.