[EXTERNAL] Re: GCC address sanitizer - supported architecture

[Qingnan Duan]

Hi Kewen,
Thank you for the explanation.

Best regards,
Qingnan Duan
________________________________
From: Jonathan Wakely <jwakely.gcc@gmail.com>
Sent: Thursday, December 24, 2020 20:28
To: Kewen.Lin <linkw@linux.ibm.com>
Cc: Qingnan Duan <Qingnan.Duan@microsoft.com>; gcc-help <gcc-help@gcc.gnu.org>
Subject: [EXTERNAL] Re: GCC address sanitizer - supported architecture



On Thu, 24 Dec 2020, 12:06 Kewen.Lin, <linkw@linux.ibm.com<mailto:linkw@linux.ibm.com>> wrote:
> on 2020/12/24 下午6:10, Jonathan Wakely wrote:
> On Thu, 24 Dec 2020, 08:50 Kewen.Lin via Gcc-help, <gcc-help@gcc.gnu.org<mailto:gcc-help@gcc.gnu.org> <mailto:gcc-help@gcc.gnu.org<mailto: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<https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc.gnu.org%2Fonlinedocs%2Fgcc%2FInstrumentation-Options.html&data=04%7C01%7Cqingnan.duan%40microsoft.com%7Cc5804cae19b542e4257c08d8a8076db7%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637444097175916947%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=IQqepPCIqaScR58IOrTVCNQMbOYAkuhRaAL5L71MBCA%3D&reserved=0> <https://gcc.gnu.org/onlinedocs/gcc/Instrumentation-Options.html<https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc.gnu.org%2Fonlinedocs%2Fgcc%2FInstrumentation-Options.html&data=04%7C01%7Cqingnan.duan%40microsoft.com%7Cc5804cae19b542e4257c08d8a8076db7%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637444097175916947%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=IQqepPCIqaScR58IOrTVCNQMbOYAkuhRaAL5L71MBCA%3D&reserved=0>>> 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?
>

Hi Jonathan,

Thanks for confirming this.  PR98437 was opened as you suggested.

Great, thanks.