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Tue, 14 Oct 2025 06:37:20 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHzU29JgVkFZ4W8Q1tBLT/IamVpxQegmGCOEfrVnNf9pJSjt0bkMB0AlhOpJxeaQq7KBSafIg== X-Received: by 2002:a05:6000:2305:b0:425:7e45:aaa8 with SMTP id ffacd0b85a97d-42667178050mr16077057f8f.19.1760449039837; Tue, 14 Oct 2025 06:37:19 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Richard Henderson Subject: [PULL 03/28] rust: migration: hide more warnings from call_func_with_field! Date: Tue, 14 Oct 2025 15:36:48 +0200 Message-ID: <20251014133713.1103695-3-pbonzini@redhat.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251014133540.1103268-1-pbonzini@redhat.com> References: <20251014133540.1103268-1-pbonzini@redhat.com> MIME-Version: 1.0 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=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.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, 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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-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 @redhat.com) X-ZM-MESSAGEID: 1760449162128158500 Content-Type: text/plain; charset="utf-8" The call_func_with_field! macro uses dead code willingly to infer the appropriate type. This has started adding a new warning: error: unused variable: `value__` 79 | break phantom__(&{ let value__: $typ; value__.$($field).+= }) So shut it up together with the existing unreachable_code warning. Signed-off-by: Paolo Bonzini --- rust/migration/src/vmstate.rs | 1 + 1 file changed, 1 insertion(+) diff --git a/rust/migration/src/vmstate.rs b/rust/migration/src/vmstate.rs index e04b19b3c9f..5f5708ad39e 100644 --- a/rust/migration/src/vmstate.rs +++ b/rust/migration/src/vmstate.rs @@ -72,6 +72,7 @@ macro_rules! call_func_with_field { ($func:expr, $typ:ty, $($field:tt).+) =3D> { $func(loop { #![allow(unreachable_code)] + #![allow(unused_variables)] const fn phantom__(_: &T) -> ::core::marker::PhantomData= { ::core::marker::PhantomData } // Unreachable code is exempt from checks on uninitialized val= ues. // Use that trick to infer the type of this PhantomData. --=20 2.51.0