From nobody Sat Sep 6 17:00:59 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1756974126; cv=none; d=zohomail.com; s=zohoarc; b=SbouiXnN6GbWBHGhZVpUe4mqd2p2Xo6KcxjPZ/MA6JV1HWp381ISa3OiRpQeVt3pnqtiVkvaMQMYFE93RszMhP5QJRZAl5yZS/ymjljDNEntIqfCPfiDUdqUgXOKDPZH/DJGJ+SvkTr6sxHhxAOJjkd2zAsa2d98sA701zyuuD0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1756974126; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=KKf3LX74QuDicrn7aIOxjy5IHw4dOUBMKNzlJ8lYJDM=; b=MpIX7GeZ3GTKWwUKhUDQslnfW0ZjAo8YnUuS5ogYUrCpRXTSSJRjojQhj8LIpipN9ZLko2LIAD0BK2ovqZ58qNpl6zLJfFraD6ZhCARlcIw6Hyt6+Z6QNysbIL0srrl8VC7i6z2fihLJRfA3bClZnSRpy6BxqsUBcn1Fk8lsMRw= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1756974126761770.4613382253808; Thu, 4 Sep 2025 01:22:06 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uu58r-0003s9-GA; Thu, 04 Sep 2025 04:16:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uu553-0006Yg-Uu for qemu-devel@nongnu.org; Thu, 04 Sep 2025 04:12:30 -0400 Received: from mail-ed1-x535.google.com ([2a00:1450:4864:20::535]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1uu54X-0004Aw-E9 for qemu-devel@nongnu.org; Thu, 04 Sep 2025 04:12:27 -0400 Received: by mail-ed1-x535.google.com with SMTP id 4fb4d7f45d1cf-61ce4c32a36so1285805a12.3 for ; Thu, 04 Sep 2025 01:11:57 -0700 (PDT) Received: from draig.lan ([185.126.160.19]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-61cfc5622f0sm13427169a12.51.2025.09.04.01.11.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Sep 2025 01:11:49 -0700 (PDT) Received: from draig.lan (localhost [IPv6:::1]) by draig.lan (Postfix) with ESMTP id A1FB260193; Thu, 04 Sep 2025 09:11:33 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1756973515; x=1757578315; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=KKf3LX74QuDicrn7aIOxjy5IHw4dOUBMKNzlJ8lYJDM=; b=z1Ag0651Y2v/3qprg58MVyMZb7i7n7VpPzYCIGE9cnK1WFvH1O5rsK7t7TdzaaS0Dg iF99L71UuucQCnA6Gw+9f5/xOTsKwqOHgQ7EsiB7ds5khgvayYhnSn7NfIUnPl+XwKWo PpUv42c+t2XMZAuSh+R6nwnnINkdnx+bGDlxXumwkJXPSctDb2e6o+n4gClYRq43sKau lmE2h+0uBo3LlOhQd/uuc51BirZImDCL+oOz3e2IxQ7CHyZJ22td6IQxvCJwYuIOt2yR ommf1zCYM3KmoDjOGXbtr0wl4jthG+6dEQIus4w6YnXVPrLVOrESrB61fLGdbxsbRWqQ eVvQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756973515; x=1757578315; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=KKf3LX74QuDicrn7aIOxjy5IHw4dOUBMKNzlJ8lYJDM=; b=CqtbDVNVlxp1EZNBPxHeGwYUFHsaI4m51By5xbuiT0q4/gb+dUIOYO0KU73EakDvLr GeDLxPUk/Id6X6Q3Zt3MoKBbCLbzUwJHHAt14iOxBv2RMQUaGKmXESgx1XeFbY/8yzxN mqu23wTb8IYpJXTD+4WEKsDkxyNtlErTTBP3pZcJGEU7t+9MnDxiPj8xkfFsaBxwzMQg utdzrN6WqA+z1dKwUUYLPiICU2zZ7IeHUGdP71um9H+h0N62K+gUP6bdeDjcl/TKOA3f 6hiNfZRUCoItNvPmvoZvm/ElWQ/80LuTC+/YA8D8Tfid4nd69d1sEeE0HDHUknK8TMPp MxkQ== X-Gm-Message-State: AOJu0Yxyg+oo064b09byMFGxm5YGKbKJjsufFFNr4Iqp3qz0GWqpralg zox5H80TGcX9lGJ2xeAFPqqiIUvnE0MhgeSiJ7+8fhitH2NtW9YQmw2cAs8p/FRxQk7AUH7pA2T cNXxAjgBNtA== X-Gm-Gg: ASbGncs8qHYiGV2L6AsC66RgyVVO+0WuytxfUOQwEoohlHaNH7PScB9wUN4+hoxREZK XonPGESBxZGUbvetdTjS22Z9CXfUfDXzVDWHYXL3PHllJOitAdFJSp0H6UTpj6K1V5WhL+rqo0o 2UHzlliR8IUWTAt+rLFNl35rake1AdPFHKwE5oRYHAy2bKlBDkD6UDzEEuNnjLmbv7+uVuddmBI 1YfNWNButSAWbWJ6eQQii/lxEGDWPr/i/0hYMRW3kFw9xg9IbYhPu/DJhALu8IgIv2acAUL4YzK 1qe7KezwIuCAxFW3bguT7U8dTAQxuVEak5VM5DcR091C36ne/9pNANx2xPuLAW8vWiMNZp4c3jp MI9Lsx2ojBlWvH4BRaLdOQQDLQna1p2YAFw== X-Google-Smtp-Source: AGHT+IGx8ZJxjps5cff/PZm9JBRuTzbh2ffGQw/tl1lRzj/lZpIUq6TJ0w2xsdrM6qRT2xpIi5PODA== X-Received: by 2002:a05:6402:1e8c:b0:620:894c:656c with SMTP id 4fb4d7f45d1cf-620894c7c6fmr30028a12.29.1756973515184; Thu, 04 Sep 2025 01:11:55 -0700 (PDT) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: Reinoud Zandijk , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Huacai Chen , Zhao Liu , Paolo Bonzini , Alistair Francis , qemu-arm@nongnu.org, Fam Zheng , Helge Deller , Matthew Rosato , Fabiano Rosas , qemu-rust@nongnu.org, Bibo Mao , qemu-riscv@nongnu.org, Thanos Makatos , Liu Zhiwei , Riku Voipio , Cameron Esfahani , Alexander Graf , Laurent Vivier , Harsh Prateek Bora , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , qemu-ppc@nongnu.org, Stafford Horne , Sunil Muthuswamy , Jagannathan Raman , Igor Mammedov , Brian Cain , Phil Dennis-Jordan , devel@lists.libvirt.org, Mads Ynddal , Elena Ufimtseva , Peter Xu , Jason Herne , Michael Rolnik , Weiwei Li , Laurent Vivier , Ilya Leoshkevich , qemu-block@nongnu.org, Peter Maydell , Kostiantyn Kostiuk , Kyle Evans , David Hildenbrand , "Edgar E. Iglesias" , Warner Losh , Daniel Henrique Barboza , John Snow , Yoshinori Sato , Aleksandar Rikalo , Alistair Francis , Marcelo Tosatti , Yonggang Luo , Radoslaw Biernacki , Artyom Tarasenko , Yanan Wang , Eduardo Habkost , Aurelien Jarno , Richard Henderson , qemu-s390x@nongnu.org, Alex Williamson , "Michael S. Tsirkin" , Ani Sinha , Roman Bolshakov , Manos Pitsidianakis , Chinmay Rath , Thomas Huth , Cleber Rosa , kvm@vger.kernel.org, Song Gao , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Halil Pasic , Eric Farman , Palmer Dabbelt , Leif Lindholm , Christian Borntraeger , Michael Roth , Mauro Carvalho Chehab , Jiaxun Yang , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Mark Cave-Ayland , Marcel Apfelbaum , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Nicholas Piggin , John Levon Subject: [PATCH v2 045/281] rust/qemu-api-macros: make derive(Object) friendly when missing parent Date: Thu, 4 Sep 2025 09:07:19 +0100 Message-ID: <20250904081128.1942269-46-alex.bennee@linaro.org> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250904081128.1942269-1-alex.bennee@linaro.org> References: <20250904081128.1942269-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; 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::535; envelope-from=alex.bennee@linaro.org; helo=mail-ed1-x535.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1756974129289124100 From: Marc-Andr=C3=A9 Lureau Signed-off-by: Marc-Andr=C3=A9 Lureau Link: https://lore.kernel.org/r/20250826133132.4064478-5-marcandre.lureau@r= edhat.com Signed-off-by: Paolo Bonzini --- rust/qemu-api-macros/src/lib.rs | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/rust/qemu-api-macros/src/lib.rs b/rust/qemu-api-macros/src/lib= .rs index b525d89c09e..a6147418891 100644 --- a/rust/qemu-api-macros/src/lib.rs +++ b/rust/qemu-api-macros/src/lib.rs @@ -85,7 +85,15 @@ fn derive_object_or_error(input: DeriveInput) -> Result<= proc_macro2::TokenStream is_c_repr(&input, "#[derive(Object)]")?; =20 let name =3D &input.ident; - let parent =3D &get_fields(&input, "#[derive(Object)]")?[0].ident; + let parent =3D &get_fields(&input, "#[derive(Object)]")? + .get(0) + .ok_or_else(|| { + Error::new( + input.ident.span(), + "#[derive(Object)] requires a parent field", + ) + })? + .ident; =20 Ok(quote! { ::qemu_api::assert_field_type!(#name, #parent, --=20 2.47.2