From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_MSPIKE_H2 autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 13749 invoked from network); 22 Jul 2022 16:29:17 -0000 Received: from second.openwall.net (193.110.157.125) by inbox.vuxu.org with ESMTPUTF8; 22 Jul 2022 16:29:17 -0000 Received: (qmail 30102 invoked by uid 550); 22 Jul 2022 16:29:13 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 30070 invoked from network); 22 Jul 2022 16:29:13 -0000 Date: Fri, 22 Jul 2022 18:29:00 +0200 From: Szabolcs Nagy To: Thomas Petazzoni Cc: "musl@lists.openwall.com" Message-ID: <20220722162900.GB1320090@port70.net> Mail-Followup-To: Thomas Petazzoni , "musl@lists.openwall.com" References: <20220722091224.344b2b22@windsurf> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220722091224.344b2b22@windsurf> Subject: Re: [musl] ./src/internal/atomic.h:229:14: error: size of array 'a_cas_p_undefined_but_pointer_not_32bit' is negative on PowerPC * Thomas Petazzoni [2022-07-22 09:12:24 +0200]: > Hello, > > We've "recently" started in Buildroot the build testing of fully random > configurations, so we're now testing many more cases and seeing new > build failures. > > As part of this, we're now seeing build failures of musl on PowerPC > 32-bit architectures. So far, we've seen the problem on power4 > (-mcpu=power4), power5 (-mcpu=power5) and power6 (-mcpu=power6), 970 > (-mcpu=970), power8 (-mcpu=power8), 620 (-mcpu=620), 630 (-mcpu=630). > > The failure is: > > ./src/internal/atomic.h:229:14: error: size of array 'a_cas_p_undefined_but_pointer_not_32bit' is negative > 229 | typedef char a_cas_p_undefined_but_pointer_not_32bit[-sizeof(char) == 0xffffffff ? 1 : -1]; > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ the compiler is not configured for 32-bit target abi, but the triplet (powerpc-buildroot-linux-musl) selects the 32-bit target in musl. please use powerpc64* --target triplet when configuring musl or configure gcc to default to 32-bit abi if that's what you want. (the bug would be more obvious looking at gcc -v) > > You can see the full musl build log at: > > http://autobuild.buildroot.net/results/3f1956fbc1746ac25b537ed023e6393ff715f4c9/build-end.log (power4) > http://autobuild.buildroot.net/results/eeb3d66480e6fb4cd031e7803859480b6d0c72f3/build-end.log (power5) > http://autobuild.buildroot.net/results/4e41d2ce80ba56f933b1a4ac2dec367d634b0b54/build-end.log (power6) > http://autobuild.buildroot.net/results/5c7/5c7f71852b8ad201c0615838b7fa6f8bb15cc55b/build-end.log (970) > http://autobuild.buildroot.net/results/bac/bac4489b489f9b62b5f00be6a3aaac2db90e4ca1/build-end.log (power8) > http://autobuild.buildroot.net/results/97c/97c6c4bd683e6c7022a62343888dfa8b9d3bab04/build-end.log (620) > http://autobuild.buildroot.net/results/e2e/e2ed03711a8f2ae7b80efd56114457f8476449cc/build-end.log (630) > > I have not investigated the problem so far. I'm not super familiar with > PowerPC, but it seems like these cores are all 64-bit capable, but here > we build for them in 32-bit mode. Maybe this is the case that isn't > handled or supported by musl? > > Thanks a lot for your support! > > Best regards, > > Thomas > -- > Thomas Petazzoni, co-owner and CEO, Bootlin > Embedded Linux and Kernel engineering and training > https://bootlin.com