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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=2607:f8b0:4864:20::531; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x531.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1629314483462100001 This seems to be either a glibc or gcc bug, but the code appears to be fine with the warning suppressed. Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- util/qemu-thread-posix.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c index fd9d714038..6c5004220d 100644 --- a/util/qemu-thread-posix.c +++ b/util/qemu-thread-posix.c @@ -537,9 +537,28 @@ 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); + + /* + * GCC 11 with glibc 2.17 on PowerPC reports + * + * qemu-thread-posix.c:540:5: error: =E2=80=98__sigsetjmp=E2=80=99 acc= essing 656 bytes + * in a region of size 528 [-Werror=3Dstringop-overflow=3D] + * 540 | pthread_cleanup_push(qemu_thread_atexit_notify, NULL); + * | ^~~~~~~~~~~~~~~~~~~~ + * + * which is clearly nonsense. + */ +#pragma GCC diagnostic push +#ifndef __clang__ +#pragma GCC diagnostic ignored "-Wstringop-overflow" +#endif + pthread_cleanup_push(qemu_thread_atexit_notify, NULL); r =3D start_routine(arg); pthread_cleanup_pop(1); + +#pragma GCC diagnostic pop + return r; } =20 --=20 2.25.1