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identity=mailfrom; envelope-from="adr@SDF.ORG"; helo=mx.sdf.org; client-ip=205.166.94.24 Received: from mx.sdf.org (mx.sdf.org [205.166.94.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by tb-mx0.topicbox.com (Postfix) with ESMTPS for <9fans@9fans.net>; Sun, 15 May 2022 10:09:08 -0400 (EDT) (envelope-from adr@SDF.ORG) Received: from sdf.org (IDENT:adr@sdf.org [205.166.94.16]) by mx.sdf.org (8.15.2/8.14.5) with ESMTPS id 24FE964r029116 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits) verified NO) for <9fans@9fans.net>; Sun, 15 May 2022 14:09:07 GMT Received: from localhost (adr@localhost) by sdf.org (8.15.2/8.12.8/Submit) with ESMTP id 24FE962L006330 for <9fans@9fans.net>; Sun, 15 May 2022 14:09:06 GMT Date: Sun, 15 May 2022 14:09:06 +0000 (UTC) From: adr To: 9fans <9fans@9fans.net> Subject: Re: [9fans] void* In-Reply-To: <202205151321.24FDLetH016678@freefriends.org> Message-ID: References: <7f6454b9-b5b-d2ac-c5b0-58e6d872e3fa@SDF.ORG> <202205151321.24FDLetH016678@freefriends.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 9a102c7c-d458-11ec-8629-85285ae016f4 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UZWNhZWEzYjllYzhlNzA2Ni1NOWJjM2FjZGY0ZGQxOWVmYjc1ZWE1?= =?UTF-8?B?YTUxPg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Content-Transfer-Encoding: quoted-printable List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M9bc3acdf4dd19efb75ea5a51:1:K3SdaImTOBbQ57OYvnBnB2e_OZ5pmFxk99QWbSE1XEU On Sun, 15 May 2022, arnold@skeeve.com wrote: > It allows you pass pointers of any type without requiring casts: > > struct foo s[5] =3D ... > memmove(s, & s[1], 4 * sizeof(struct foo)); // shift down 1 > > The compiler won't complain because any pointer type can be passed > to a void* parameter. Otherwise you'd need to cast: > > memmove((uchar*) s, (uchar*) & s[1], 4 * sizeof(struct foo)); Sure, but you could change it to do the same with char*. > void* has been standard practice (even on Plan 9) for 30+ years. > It's not worth changing it now. :-) I agree, I just wanted to share some opinions. Regards, adr. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tecaea3b9ec8e7066-M9bc3a= cdf4dd19efb75ea5a51 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription