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([2001:b07:6468:f312:e876:e214:dc8e:2846]) by smtp.gmail.com with ESMTPSA id y3sm26943510wmg.2.2019.10.06.09.06.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 06 Oct 2019 09:06:52 -0700 (PDT) Subject: Re: [PATCH] tests/docker: only enable ubsan for test-clang To: John Snow , qemu-devel@nongnu.org References: <1569939264-12539-1-git-send-email-pbonzini@redhat.com> <7a5238e3-cbbf-da16-eb58-e5474c6245e8@redhat.com> From: Paolo Bonzini Openpgp: preference=signencrypt Message-ID: Date: Sun, 6 Oct 2019 18:06:55 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <7a5238e3-cbbf-da16-eb58-e5474c6245e8@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 01/10/19 19:59, John Snow wrote: > > it looked quite like --enable-sanitizers was indeed the same as > -fsanitize=undefined; or at least was a superset of such. > > I suppose the argument you're making here is that we *only* want ubsan > for test-clang? > > (I guess so, since test-debug also stipulates that clang be used; but > enables debug.) > > In this case, is there a use for test-clang at all, actually? Yes, test-clang checks that clang-specific warnings do not fire. Enabling ubsan isn't particularly useful in this respect, but it's okay for me to keep it. Paolo