From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/10626 Path: news.gmane.org!.POSTED!not-for-mail From: Rich Felker Newsgroups: gmane.linux.lib.musl.general Subject: Re: Using macro CMSG_NXTHDR generates warnings with CLANG Date: Tue, 11 Oct 2016 12:46:44 -0400 Message-ID: <20161011164644.GJ19318@brightrain.aerifal.cx> References: <20161011150901.GG19318@brightrain.aerifal.cx> <20161011153100.GM28065@port70.net> <20161011164321.GN28065@port70.net> Reply-To: musl@lists.openwall.com NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: blaine.gmane.org 1476204446 6646 195.159.176.226 (11 Oct 2016 16:47:26 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 11 Oct 2016 16:47:26 +0000 (UTC) User-Agent: Mutt/1.5.21 (2010-09-15) To: musl@lists.openwall.com Original-X-From: musl-return-10639-gllmg-musl=m.gmane.org@lists.openwall.com Tue Oct 11 18:47:22 2016 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by blaine.gmane.org with smtp (Exim 4.84_2) (envelope-from ) id 1bu0Ce-0006VM-4n for gllmg-musl@m.gmane.org; Tue, 11 Oct 2016 18:46:56 +0200 Original-Received: (qmail 26352 invoked by uid 550); 11 Oct 2016 16:46:56 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Original-Received: (qmail 26331 invoked from network); 11 Oct 2016 16:46:56 -0000 Content-Disposition: inline In-Reply-To: <20161011164321.GN28065@port70.net> Original-Sender: Rich Felker Xref: news.gmane.org gmane.linux.lib.musl.general:10626 Archived-At: On Tue, Oct 11, 2016 at 06:43:21PM +0200, Szabolcs Nagy wrote: > * Jan Vorlicek [2016-10-11 15:38:38 +0000]: > > My test was a c++ code :-). That's why the struct was not there. > > > > don't top post. > > including sys/socket.h (or any posix header) in c++ code is undefined > (neither iso c++ nor posix defines the behaviour) so you are on your own. C++ isn't the issue here. The header is obviously expected to work in C++, even though there's no formal spec for it (although of course you should have extern "C" around it). The issue at hand is the clang warnings and I think they happen just the same in equivalent C code. Rich