[PATCH] PR target/91441 - Turn off -fsanitize=kernel-address if TARGET_ASAN_SHADOW_OFFSET is not implemented.

[Kito Cheng]

Hi Jeff:

Thanks, committed as r274631.

On Fri, Aug 16, 2019 at 11:51 PM Jeff Law <law@redhat.com> wrote:
>
> On 8/15/19 8:45 PM, Kito Cheng wrote:
> >  - -fsanitize=kernel-address will call targetm.asan_shadow_offset ()
> >    at asan_shadow_offset, so it will crash if TARGET_ASAN_SHADOW_OFFSET
> >    is not implemented, that's mean -fsanitize=kernel-address is not
> >    supported for target without TARGET_ASAN_SHADOW_OFFSET implementation.
> >
> > gcc/ChangeLog:
> >
> >       PR target/91441
> >       * toplev.c (process_options): Check TARGET_ASAN_SHADOW_OFFSET is
> >       implemented for -fsanitize=kernel-address, and merge check logic
> >       with -fsanitize=address.
> >
> > testsuite/ChangeLog:
> >
> >       PR target/91441
> >       * gcc.target/riscv/pr91441.c: New.
> OK
> jeff