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Tue, 26 May 2020 18:51:34 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Subject: [PATCH] or1k: Fix compilation hiccup Date: Tue, 26 May 2020 13:51:32 -0500 Message-Id: <20200526185132.1652355-1-eblake@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=205.139.110.61; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/26 01:14:47 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, 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_H2=-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: qemu-trivial@nongnu.org, Stafford Horne , Jia Liu Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On my Fedora 32 machine, gcc 10.1.1 at -O2 (the default for a bare './configure') has a false-positive complaint: CC or1k-softmmu/hw/openrisc/openrisc_sim.o /home/eblake/qemu/hw/openrisc/openrisc_sim.c: In function ‘openrisc_sim_init’: /home/eblake/qemu/hw/openrisc/openrisc_sim.c:87:42: error: ‘cpu_irqs[0]’ may be used uninitialized in this function [-Werror=maybe-uninitialized] 87 | sysbus_connect_irq(s, i, cpu_irqs[i][irq_pin]); | ~~~~~~~~^~~ Initializing both pointers of cpu_irqs[] to NULL is sufficient to shut up the compiler, even though they are definitely assigned in openrisc_sim_init() prior to the inlined call to openrisc_sim_ompic_init() containing the line in question. Signed-off-by: Eric Blake --- hw/openrisc/openrisc_sim.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/openrisc/openrisc_sim.c b/hw/openrisc/openrisc_sim.c index d08ce6181199..95011a8015b4 100644 --- a/hw/openrisc/openrisc_sim.c +++ b/hw/openrisc/openrisc_sim.c @@ -129,7 +129,7 @@ static void openrisc_sim_init(MachineState *machine) const char *kernel_filename = machine->kernel_filename; OpenRISCCPU *cpu = NULL; MemoryRegion *ram; - qemu_irq *cpu_irqs[2]; + qemu_irq *cpu_irqs[2] = {}; qemu_irq serial_irq; int n; unsigned int smp_cpus = machine->smp.cpus; -- 2.26.2