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Mon, 24 Jan 2022 08:50:38 -0800 (PST) MIME-Version: 1.0 From: =?UTF-8?Q?Pavel_Klinkovsk=C3=BD?= Date: Mon, 24 Jan 2022 17:50:28 +0100 Message-ID: To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: multipart/alternative; boundary=000000000000aa667805d656c432 Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: c6d48e3a-7d35-11ec-840a-e1018fa10dee Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UYjVmZTBkYzQzNDQ3YWIyYy1NMjQwZGQ0MjUzZjJlYTAzZWZjMmQ5?= =?UTF-8?B?MDEzPg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Subject: [9fans] Strange 'uintptr' behavior Content-Transfer-Encoding: 7bit List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M240dd4253f2ea03efc2d9013:1:8qoFffF0e4tSyK6rbNiv4dl2XzHYfAxEATg3zLiq2_g --000000000000aa667805d656c432 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi all, I tried some artificial example for Plan9 compiler (5c)... This code is compiled without any problem: uintptr frst[] =3D {nil, nil, nil, nil, nil}; uintptr scnd[] =3D {nil, nil, frst, &frst[0]}; But this one fails: uintptr frst[] =3D {nil, nil, nil, nil, nil}; uintptr scnd[] =3D {nil, nil, frst, &frst[1]}; ...with message: cpu% 5c -p t.c /usr/pavel/t.c:16[t.c:888] initializer is not a constant: scnd OTOH, replacement of 'uintptr' by 'void*' is compiled without any problem: void* frst[] =3D {nil, nil, nil, nil, nil}; void* scnd[] =3D {nil, nil, frst, &frst[1]}; Any explanation is appreciated. Pavel ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tb5fe0dc43447ab2c-M240dd= 4253f2ea03efc2d9013 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription --000000000000aa667805d656c432 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi all,

I tried some arti= ficial example for Plan9 compiler (5c)...

T= his code is compiled without any problem:
uintptr frst[] =3D {nil= , nil, nil, nil, nil};
uintptr scnd[] =3D {nil, nil, frst, &frst[0= ]};

But this one fails:
uintptr = frst[] =3D {nil, nil, nil, nil, nil};
uintptr scnd[] =3D {nil, nil, fr= st, &frst[1]};

...with message:
<= div>cpu% 5c -p t.c
/usr/pavel/t.c:16[t.c:888] initializer is not a con= stant: scnd

OTOH, replacement of 'uint= ptr' by 'void*' is compiled without any problem:
void= * frst[] =3D {nil, nil, nil, nil, nil};
void* scnd[] =3D {nil, nil, fr= st, &frst[1]};

Any explanation is appr= eciated.

Pavel

= --000000000000aa667805d656c432--