[Bug sanitizer/69278] Confusion option handling for -sanitize-recovery=alll

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69278

--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Behavior was changed in between clang 3.7.1 and 3.8.1:
https://godbolt.org/g/poL2cY.