[Bug sanitizer/81645] Learn UBSAN to support -fsanitize=builtin

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81645

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|7.0                         |8.0
   Target Milestone|8.0                         |---