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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/102162] Byte-wise access optimized away at -O1 and
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Date: Wed, 01 Sep 2021 23:29:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102162

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-09-01
     Ever confirmed|0                           |1

--- Comment #18 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I used noticed the original testcase had the wrong line commented out :)
It should have been:
extern u32  output_len __attribute__((__aligned__(1)));

Anyways confirmed on aarch64-linux-gnu with -O1 -mstrict-align too.=