From patchwork Thu Sep 22 13:19:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Biener X-Patchwork-Id: 57899 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id A1C8E3857034 for ; Thu, 22 Sep 2022 13:20:09 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A1C8E3857034 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1663852809; bh=5mgm4AYv4Yf7N8Wb25APsENK9cifPPSjPhG8WwvEj3c=; h=Date:To:Subject:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=iMZx2+5OZTmR+4RRj9KHhTot/Sy6d2A+P1bGPgiIDl7mBH5p+BDz+7FD844FqGMVx 1Zn6i+LPg0744P13bwwSGL4Nyi5RC9A7Y6si+RpL74KJI3OulD4PN5Zl8zALXaGf1h EdGhkQKOPretXwpbryNMwVK0QU0cq3hbAqrJvmMg= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by sourceware.org (Postfix) with ESMTPS id E44573857831 for ; Thu, 22 Sep 2022 13:19:40 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org E44573857831 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id BFFF9219E7 for ; Thu, 22 Sep 2022 13:19:38 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id AAC0C1346B for ; Thu, 22 Sep 2022 13:19:38 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id eOdkKOpgLGPpcgAAMHmgww (envelope-from ) for ; Thu, 22 Sep 2022 13:19:38 +0000 Date: Thu, 22 Sep 2022 15:19:38 +0200 (CEST) To: gcc-patches@gcc.gnu.org Subject: [PATCH] tree-optimization/102801 - testcase for uninit diagnostic MIME-Version: 1.0 Message-Id: <20220922131938.AAC0C1346B@imap2.suse-dmz.suse.de> X-Spam-Status: No, score=-11.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Richard Biener via Gcc-patches From: Richard Biener Reply-To: Richard Biener Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" The following testcase is fixed in GCC 12+ Tested on x86_64-unknown-linux-gnu, pushed. PR tree-optimization/102801 gcc/testsuite/ * g++.dg/warn/Wuninitialized-33.C: New testcase. --- gcc/testsuite/g++.dg/warn/Wuninitialized-33.C | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 gcc/testsuite/g++.dg/warn/Wuninitialized-33.C diff --git a/gcc/testsuite/g++.dg/warn/Wuninitialized-33.C b/gcc/testsuite/g++.dg/warn/Wuninitialized-33.C new file mode 100644 index 00000000000..1bb0639ee30 --- /dev/null +++ b/gcc/testsuite/g++.dg/warn/Wuninitialized-33.C @@ -0,0 +1,55 @@ +// PR102801 +// { dg-do compile } +// { dg-require-effective-target c++17 } +// { dg-options "-O2 -Wall" } + +#include +#include +#include +#include +#include +#include + +class C { + bool b{}; // { dg-bogus "uninitialized" } + + struct Shared {}; + using SharedPtr = std::shared_ptr; + + SharedPtr shared; + +public: + C() = delete; + C(bool bIn) : b(bIn) {} + ~C(); + int someMethod() const; +}; + +using OptC = std::optional; + +class C2 { + OptC c; +public: + C2() = default; + C2(const C &cIn) : c(cIn) {} + ~C2(); + void operator()() const; + void swap(C2 &o) { std::swap(c, o.c); } +}; + + +template +class Q { + std::vector queue; +public: + void Add(std::vector &items) { + for (T & item : items) { + queue.push_back(T()); + item.swap(queue.back()); + } + } + void Exec(); +}; + +extern void foo(Q & q, std::vector &items); +void foo(Q & q, std::vector &items) { q.Add(items); q.Exec(); }