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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/112112] Improper Arithmetic Type Conversion in
 s390x-linux-gnu-gcc
Date: Wed, 01 Nov 2023 09:16:26 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112112

Thomas Koenig <tkoenig at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2023-11-01
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |WAITING

--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to =EA=B9=80=EB=8C=80=EC=98=81 from comment #6)
> ```
> z3rodae0@z3rodae0:~$ ./sh.sh
> result for -O0 "signed" =3D 1
> result for -O1 "signed" =3D 1
> result for -O2 "signed" =3D 1
> result for -O3 "signed" =3D 1
> result for -O0 "unsigned" =3D 0
> result for -O1 "unsigned" =3D 0
> result for -O2 "unsigned" =3D 0
> result for -O3 "unsigned" =3D 0
> result for -O0 "" =3D 1
> result for -O1 "" =3D 1
> result for -O2 "" =3D 1
> result for -O3 "" =3D 1
> ```
>=20
> That's correct. I ran your code and script in my environment, and it
> produced the same results

That is weird.

I don't see a meaningful difference between the version without signed or
unsigned and your program, and you get inconsistent results with your
original program and consistent results with the other one.

Or am I missing something?=