GCC address sanitizer - supported architecture

[Jonathan Wakely]

On Thu, 24 Dec 2020, 08:50 Kewen.Lin via Gcc-help, <gcc-help@gcc.gnu.org>
wrote:

> Hi Qingnan,
>
> on 2020/12/24 上午11:23, Qingnan Duan via Gcc-help wrote:
> > Hi everyone,
> > I was looking at this page Instrumentation Options (Using the GNU
> Compiler Collection (GCC))<
> https://gcc.gnu.org/onlinedocs/gcc/Instrumentation-Options.html> and it
> says "-fsanitize=address" is only supported on AArch64. However, I was able
> to compile my code on x86-64 CPU with -fsanitize=address flag.
> >
>
> I think the part "Note that the only target this option is currently
> supported on is AArch64. "
> is specific for option “-fsanitize=hwaddress” not for option
> "-fsanitize=address".
>
> Only aarch64 port re-defines TARGET_MEMTAG_CAN_TAG_ADDRESSES which is used
> for -fsanitize=hwaddress,
> that matches the wordings.
>
> By the way, I also felt a bit confused without digging, not sure whether
> it's confusing from
> native speaker's perspective.  If yes, maybe it's worth to revise it
> somehow.  :)
>

Yes, the documentation should be fixed. As currently written it's incorrect.

Could you please file a bug?