[Bug middle-end/123801] [13/14/15/16 Regression] Wstringop-overflow false positive since r12-4240

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123801

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
For warnings on dead code the idea of turning warnings into IFN calls and only
warning if that IFN survives till say isel.