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Thu, 03 Jul 2025 07:20:36 -0700 (PDT) From: Manos Pitsidianakis Date: Thu, 03 Jul 2025 17:20:22 +0300 Subject: [PATCH] rust/bindings: allow unnecessary_transmutes (1.88) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250703-rust_bindings_allow_unnecessary_transmutes-v1-1-692ca210d331@linaro.org> X-B4-Tracking: v=1; b=H4sIAKWRZmgC/x3NQQrCMBBA0auUWRtIamrBq4iEtBnrQJ3KTKKW0 rs3uHyb/zdQFEKFa7OB4IeUFq5wpwbGZ+QJDaVqaG3b2d6ejRTNYSBOxJOGOM/LNxRmHFE1yhq yRNZXyagmXZxPg+9cHz3U4FvwQb//7Hbf9wNQftURfAAAAA== X-Change-ID: 20250703-rust_bindings_allow_unnecessary_transmutes-d614db4517a4 To: qemu-devel@nongnu.org Cc: qemu-rust@nongnu.org, Paolo Bonzini , Zhao Liu , Manos Pitsidianakis X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1667; i=manos.pitsidianakis@linaro.org; h=from:subject:message-id; bh=qBnzFK2jzBx9ni4zlQZpeE9EoRu2AVMJDhHXnUF08bA=; b=LS0tLS1CRUdJTiBQR1AgTUVTU0FHRS0tLS0tCgpvd0VCYlFLUy9aQU5Bd0FLQVhjcHgzQi9mZ 25RQWNzbVlnQm9acEd5YXhRYm8wandnZjVEcEVGZjhMajkyYUU0ClJkYWI1eGExTmxKN08yWXgx SmVKQWpNRUFBRUtBQjBXSVFUTVhCdE9SS0JXODRkd0hSQjNLY2R3ZjM0SjBBVUMKYUdhUnNnQUt DUkIzS2Nkd2YzNEowRi9ZRC85MGtQV09zMkdiVUpmd1NqaWNQcHhRV3dnMHpxNjF3MkN1RmRvYg o0NXNXeUdtdm9STDZSYmlGaE5lMVFGMmlMdGkwMWRLRG1PcSthUVpLeTV6MllBYjdkZy9lS24yS U1hQUgwTkYrCm1zam5tRzc0cGhjMm9KOG5SRjlQakt1QlRzcGhQUnJ1WlVGdDNlNnBoWWpBT2FQ SjVTcDVwbGRaVnNCaGdQZ24KRlgwUVN4bmVQWXloTTRGdjAvTStjKzRBR0YrL3BVMWdHdGdlVS9 5c3UwNWZESHZXZUlZendYSi93YVlGUGhhRQpnazkwdEtMaUkxQkRpM21oZmduWnBEakVHWHN6bF k3UlZZWUlxWGsyNzZ6UTdQaFBEYWJCR2dWVHVXMzFKNnlkCkhjaWNEUWhQS0ZocTFXYkhXYk9QT WhtVzRFN2hSU0FsZWlQK2tsVTdkZWRzZTFHZ0JnNklUS0pvYzZud2gvUmUKR1c2K2g4bVROWjl5 dUIzMzU4VU5oVmtneXZBa3BtRHRkSmFKZThodWNQbUk3SDRoR1Y4dkN3TDJHTUpEUnpvVApoSnV aaGFwcmNvQzlkREhYTmhqRzN1WldKK1JWalNPYkNJNG5ubmI2RUhWWjBYZWpCdzl3VEd0TURSdU ZHMm55CnZxR1E4ME94M3h4UHJONFNTUHJ4R2NlbzJYb3M5Mm5zR1pvaHdqSnEvR3dhSTFpbFhUZ k9KR0JpTnJCSkI2WGMKUWdPZVRxdEhNZTMxUkd6OHRLd2Z4d3VhK3JpUG9SaXVjd2FVZVNwazQ4 eGtqeko4Tmw3blZ5dWt1aE5ETHI1KwpIYlQ1TXVQTHVtVUt4c2ZWamE4QlkybmxIQ1NWRXpYbEc 0TVptVlZQN2Q5dGdxQnhjc2lUWlNNcGphM091cEFBCjN6Mmhndz09Cj1SVWZPCi0tLS0tRU5EIF BHUCBNRVNTQUdFLS0tLS0K X-Developer-Key: i=manos.pitsidianakis@linaro.org; a=openpgp; fpr=7C721DF9DB3CC7182311C0BF68BC211D47B421E1 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::32a; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-wm1-x32a.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: 2.1.29 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1751552507969116600 This is a new lint introduced in Rust 1.88. It does not affect compilation when using a previous version or our MSRV, 1.77. But with 1.88 compilation fails because we deny all warnings: error: unnecessary transmute --> rust/qemu-api/libqemu_api.rlib.p/structured/bindings.inc.rs:729:18 | 729 | unsafe { ::std::mem::transmute(self._bitfield_1.get(0usize,= 24u8) as u32) } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^= ^^^^^^^^^^^^^^ help: replace this with: `u32::cast_signed(self._bitfield_1.= get(0usize, 24u8) as u32)` | =3D note: `-D unnecessary-transmutes` implied by `-D warnings` =3D help: to override `-D warnings` add `#[allow(unnecessary_transmut= es)]` Allow this lint, which even though it does not exist in previous versions, it works because we allow for `unknown_lints` in rust/Cargo.toml. Signed-off-by: Manos Pitsidianakis Reviewed-by: Bernhard Beschow --- rust/qemu-api/src/bindings.rs | 1 + 1 file changed, 1 insertion(+) diff --git a/rust/qemu-api/src/bindings.rs b/rust/qemu-api/src/bindings.rs index 057de4b6467c50ecc5acb6b51e6fde87ef5fa67f..3cdad0f0ec640880bc74a942bbc= b303be4cda775 100644 --- a/rust/qemu-api/src/bindings.rs +++ b/rust/qemu-api/src/bindings.rs @@ -6,6 +6,7 @@ non_camel_case_types, non_snake_case, non_upper_case_globals, + unnecessary_transmutes, unsafe_op_in_unsafe_fn, clippy::pedantic, clippy::restriction, --- base-commit: c77283dd5d79149f4e7e9edd00f65416c648ee59 change-id: 20250703-rust_bindings_allow_unnecessary_transmutes-d614db4517a4 -- =CE=B3=CE=B1=E1=BF=96=CE=B1 =CF=80=CF=85=CF=81=CE=AF =CE=BC=CE=B9=CF=87=CE= =B8=CE=AE=CF=84=CF=89