Re: [PATCH] ubsan: remove cc-option test for UBSAN_TRAP

[Fangrui Song]

On Wed, May 17, 2023 at 12:02 PM Kees Cook <keescook@xxxxxxxxxxxx> wrote:
>
> On Fri, 7 Apr 2023 14:54:06 -0700, Nick Desaulniers wrote:
> > -fsanitize-undefined-trap-on-error has been supported since GCC 5.1 and
> > Clang 3.2.  The minimum supported version of these according to
> > Documentation/process/changes.rst is 5.1 and 11.0.0 respectively. Drop
> > this cc-option check.
> >
> >
>
> Applied to for-next/hardening, thanks!
>
> [1/1] ubsan: remove cc-option test for UBSAN_TRAP
>       https://git.kernel.org/kees/c/08e4044243a6
>
> --
> Kees Cook
>
>

For this -fsanitize-undefined-trap-on-error, I think we need a v2 patch that
tries -fsanitize-trap=all as well.

-fsanitize-undefined-trap-on-error has been deprecated in Clang for 8
years, and at some point we will remove the option.

GCC implements -fsanitize-trap=all later, but
-fsanitize-undefined-trap-on-error is documented as deprecated as
well.


-- 
宋方睿