From patchwork Tue Nov 30 22:56:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Malcolm X-Patchwork-Id: 48313 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 B3C81385843A for ; Tue, 30 Nov 2021 22:57:40 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B3C81385843A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1638313060; bh=sYtluPxlpZPq6D3t0Mlit4miblZA9JqORK9pxN3OOz8=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=oHwV5AQkqgvXrxo6i/cFT0CLuDBwaF02MJUYSFR+qBNShAjtv2DB4+i+5MwaoU/oS FrIVa1DVDmxcLetZD0zz4nvOlsGgwvWke/7qkxwB8eErjroThbjOqtzvVP+Vhq4H45 bFENK0Kv+OfaYvCFADa+owrVePSu/KdgdgDAMUBw= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTPS id 353D53858414 for ; Tue, 30 Nov 2021 22:56:40 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 353D53858414 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-576-zZzUT0YOMUihzXbcoGZodg-1; Tue, 30 Nov 2021 17:56:38 -0500 X-MC-Unique: zZzUT0YOMUihzXbcoGZodg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C5CBC801B10 for ; Tue, 30 Nov 2021 22:56:37 +0000 (UTC) Received: from t14s.localdomain.com (ovpn-112-37.phx2.redhat.com [10.3.112.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id 900CA2619D; Tue, 30 Nov 2021 22:56:35 +0000 (UTC) To: gcc-patches@gcc.gnu.org Subject: [committed] analyzer: verify that -Wanalyzer-too-complex can be disabled via pragmas [PR100524] Date: Tue, 30 Nov 2021 17:56:33 -0500 Message-Id: <20211130225633.3183551-1-dmalcolm@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-13.3 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) 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: David Malcolm via Gcc-patches From: David Malcolm Reply-To: David Malcolm Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" Successfully regrtested on x86_64-pc-linux-gnu. Pushed to trunk as r12-5640-g03ea0ca1189a39e095188b0425c66446cc84a0a5. gcc/testsuite/ChangeLog: PR analyzer/100524 * gcc.dg/analyzer/pragma-2.c: New test. Signed-off-by: David Malcolm --- gcc/testsuite/gcc.dg/analyzer/pragma-2.c | 57 ++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/analyzer/pragma-2.c diff --git a/gcc/testsuite/gcc.dg/analyzer/pragma-2.c b/gcc/testsuite/gcc.dg/analyzer/pragma-2.c new file mode 100644 index 00000000000..58fcaab11df --- /dev/null +++ b/gcc/testsuite/gcc.dg/analyzer/pragma-2.c @@ -0,0 +1,57 @@ +/* Verify that we can disable -Wanalyzer-too-complex via pragmas. */ +/* { dg-additional-options "-Wanalyzer-too-complex -Werror=analyzer-too-complex -fno-analyzer-state-merge -g" } */ + +#include + +extern int get (void); + +/* In theory each of p0...p4 can be in various malloc states, + independently, so the total combined number of states + at any program point within the loop is NUM_VARS * NUM_STATES. */ + +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wanalyzer-too-complex" + +void test (void) +{ + void *p0 = NULL, *p1 = NULL, *p2 = NULL, *p3 = NULL, *p4 = NULL; + void **pp = NULL; + while (get ()) + { + switch (get ()) + { + default: + case 0: + pp = &p0; + break; + case 1: + pp = &p1; + break; + case 2: + pp = &p2; + break; + case 3: + pp = &p3; + break; + case 4: + pp = &p4; + break; + } + + switch (get ()) + { + default: + case 0: + *pp = malloc (16); /* { dg-warning "leak" } */ + break; + case 1: + free (*pp); + break; + case 2: + /* no-op. */ + break; + } + } +} + +#pragma GCC diagnostic pop