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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=2a00:1450:4864:20::330; envelope-from=paolo.bonzini@gmail.com; helo=mail-wm1-x330.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no 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: richard.henderson@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1631020796548100001 The following error occurs with GCC gcc (Debian 11-20210327-1) 11.0.1 20210= 327 on Debian Bullseye: ../util/qemu-thread-posix.c: In function =E2=80=98qemu_thread_start=E2=80= =99: ../util/qemu-thread-posix.c:520:5: error: =E2=80=98__sigsetjmp=E2=80=99 acc= essing 200 bytes in a region of size 72 [-Werror=3Dstringop-overflow=3D] 520 | pthread_cleanup_push(qemu_thread_atexit_notify, NULL); | ^~~~~~~~~~~~~~~~~~~~ ../util/qemu-thread-posix.c:520:5: note: referencing argument 1 of type =E2= =80=98struct __jmp_buf_tag *=E2=80=99 /usr/include/pthread.h:719:12: note: in a call to function =E2=80=98__sigse= tjmp=E2=80=99 719 | extern int __sigsetjmp (struct __jmp_buf_tag *__env, int __savemask= ) __THROWNL; | ^~~~~~~~~~~ cc1: all warnings being treated as errors Disable the warning just like it was done in glibc. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/400 Signed-off-by: Paolo Bonzini --- util/qemu-thread-posix.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c index fd9d714038..4cf47b3414 100644 --- a/util/qemu-thread-posix.c +++ b/util/qemu-thread-posix.c @@ -537,7 +537,16 @@ static void *qemu_thread_start(void *args) QEMU_TSAN_ANNOTATE_THREAD_NAME(qemu_thread_args->name); g_free(qemu_thread_args->name); g_free(qemu_thread_args); + + /* + * Work around GCC 11 false positives. Ideally glibc would use + * _Pragma itself, for now do it. See + * https://sourceware.org/bugzilla/show_bug.cgi?id=3D26647 + */ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wstringop-overflow" pthread_cleanup_push(qemu_thread_atexit_notify, NULL); +#pragma GCC diagnostic pop r =3D start_routine(arg); pthread_cleanup_pop(1); return r; --=20 2.31.1