[Bug middle-end/85643] attribute nonstring fails to squash -Wstringop-truncation warning at an offset

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643

--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Not yet.  It needs to be backported to GCC 8 next week.  I'll close it then.