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[174.21.76.141]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2c91d3e7e4bsm5115641a91.52.2024.06.30.12.01.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 30 Jun 2024 12:01:05 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: akihiko.odaki@daynix.com, alex.bennee@linaro.org, qemu-arm@nongnu.org Subject: [PATCH v4 14/14] linux-user/main: Suppress out-of-range comparison warning for clang Date: Sun, 30 Jun 2024 12:00:50 -0700 Message-Id: <20240630190050.160642-15-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240630190050.160642-1-richard.henderson@linaro.org> References: <20240630190050.160642-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::c32; envelope-from=richard.henderson@linaro.org; helo=mail-oo1-xc32.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=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org For arm32 host and arm64 guest we get .../main.c:851:32: error: result of comparison of constant 70368744177664 with expression of type 'unsigned long' is always false [-Werror,-Wtautological-constant-out-of-range-compare] if (TASK_UNMAPPED_BASE < reserved_va) { ~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~ We already disable -Wtype-limits here, for this exact comparison, but that is not enough for clang. Disable -Wtautological-compare as well, which is a superset. GCC ignores the unknown warning flag. Signed-off-by: Richard Henderson --- linux-user/main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/linux-user/main.c b/linux-user/main.c index 94c99a1366..7d3cf45fa9 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -843,6 +843,7 @@ int main(int argc, char **argv, char **envp) */ #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wtype-limits" +#pragma GCC diagnostic ignored "-Wtautological-compare" /* * Select an initial value for task_unmapped_base that is in range.