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bh=Mg9ONK0InEVWqpvTKJWUqO2Fsf0hqgK0J0g+zDJ5GR8=; b=QgKEDzGhsC6eYEjVrQSRbcrUbgNUCq0Sd7kcnbSV1okIgRtCGKO2QmHirZdFMqP6fOQb5q b6a1JAQayLBjie3CmNf37FWPqUO24Z++iGoDKz0wu5iH1nRQAOY0pWg3o1v2Dd091gceDB khEe/GQ6snCqe1yCRTPWs4W7m8W9adE= X-MC-Unique: RY5uj7VXOTuyZSA-2doIeg-1 From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 079/115] configure: Do not ignore malloc value Date: Thu, 11 Jun 2020 15:44:13 -0400 Message-Id: <20200611194449.31468-80-pbonzini@redhat.com> In-Reply-To: <20200611194449.31468-1-pbonzini@redhat.com> References: <20200611194449.31468-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=207.211.31.120; envelope-from=pbonzini@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 08:37:10 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: Leonid Bloch , Leonid Bloch Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) From: Leonid Bloch Not checking the value of malloc will cause a warning with GCC 10.1, which may result in configuration failure, with the following line in config.log: config-temp/qemu-conf.c:2:18: error: ignoring return value of =C3=A2=E2=82= =AC=CB=9Cmalloc=C3=A2=E2=82=AC=E2=84=A2 declared with attribute =C3=A2=E2= =82=AC=CB=9Cwarn_unused_result=C3=A2=E2=82=AC=E2=84=A2 [-Werror=3Dunused-re= sult] 2 | int main(void) { malloc(1); return 0; } | ^~~~~~~~~ Signed-off-by: Leonid Bloch Message-Id: <20200524221204.9791-1-lb.workbox@gmail.com> Signed-off-by: Paolo Bonzini --- configure | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/configure b/configure index 53a6dd0297..dbc16b5656 100755 --- a/configure +++ b/configure @@ -4587,7 +4587,13 @@ fi if test "$tcmalloc" =3D "yes" ; then cat > $TMPC << EOF #include -int main(void) { malloc(1); return 0; } +int main(void) { + void *tmp =3D malloc(1); + if (tmp !=3D NULL) { + return 0; + } + return 1; +} EOF =20 if compile_prog "" "-ltcmalloc" ; then @@ -4603,7 +4609,13 @@ fi if test "$jemalloc" =3D "yes" ; then cat > $TMPC << EOF #include -int main(void) { malloc(1); return 0; } +int main(void) { + void *tmp =3D malloc(1); + if (tmp !=3D NULL) { + return 0; + } + return 1; +} EOF =20 if compile_prog "" "-ljemalloc" ; then @@ -6164,7 +6176,9 @@ if test "$sanitizers" =3D "yes" ; then #include int main(void) { void *tmp =3D malloc(10); - return *(int *)(tmp + 2); + if (tmp !=3D NULL) { + return *(int *)(tmp + 2); + } } EOF if compile_prog "$CPU_CFLAGS -Werror -fsanitize=3Dundefined" ""; then --=20 2.26.2