From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:50268) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TFU1P-0007Gp-EY for qemu-devel@nongnu.org; Sat, 22 Sep 2012 14:01:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TFU1O-0008L3-DM for qemu-devel@nongnu.org; Sat, 22 Sep 2012 14:01:43 -0400 Message-ID: <505DFCFD.6010202@msgid.tls.msk.ru> Date: Sat, 22 Sep 2012 22:01:33 +0400 From: Michael Tokarev MIME-Version: 1.0 References: <1348169539-24797-1-git-send-email-sw@weilnetz.de> <20120922163216.GC14154@stefanha-thinkpad.localdomain> In-Reply-To: <20120922163216.GC14154@stefanha-thinkpad.localdomain> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [PATCH] net/socket: Fix compiler warning (regression for MinGW) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefan Hajnoczi Cc: qemu-trivial@nongnu.org, Stefan Weil , qemu-devel@nongnu.org On 22.09.2012 20:32, Stefan Hajnoczi wrote: > On Thu, Sep 20, 2012 at 09:32:19PM +0200, Stefan Weil wrote: >> Add a type cast which was removed by commit >> 213fd5087e2e4e2da10ad266df0ba950cf7618bf again. >> >> Without it, MinGW compilers complain: >> >> net/socket.c:136: warning: >> pointer targets in passing argument 2 of =E2=80=98sendto=E2=80=99 dif= fer in signedness >> /usr/lib/gcc/amd64-mingw32msvc/4.4.4/../../../../amd64-mingw32msvc/inc= lude/winsock2.h:1313: note: >> expected =E2=80=98const char *=E2=80=99 but argument is of type =E2=80= =98const uint8_t *=E2=80=99 >=20 > Wow, that's messed up. sendto() is POSIX and the prototype shouldn't b= e > const char *. >=20 > It's easy for someone to remove this cast in the future. Please add a > comment explaining that it's needed because MinGW headers don't have th= e > POSIX version of sendto(). There's qemu_recv() in qemu-common.h, for exactly the same purpose. But qemu_recv() is much more evil, IMHO. Thanks, /mjt