https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78204
Fangrui Song <i at maskray dot me> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |i at maskray dot me --- Comment #8 from Fangrui Song <i at maskray dot me> --- Note: Clang supports __attribute__((no_sanitize("address","undefined"))) but not __attribute__((no_sanitize("address,undefined"))) Possibly reject `__attribute__((no_sanitize("address,undefined")))` as well to prevent users from writing non-portable code.