From patchwork Wed Nov 30 17:18:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Pan2 via Gcc-patches" X-Patchwork-Id: 61270 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 5E8DD38532CC for ; Wed, 30 Nov 2022 17:18:51 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 5E8DD38532CC DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1669828731; bh=Rb4qXFBhHKQQhQ7cnRaAKwOPOs8aJ8e3nwCO7Ul/lko=; h=To:CC:Subject:Date:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From:Reply-To:From; b=mDvOA2jR5v3uwyEqHjqFHFv2h239ZjtB0Q98YafgsxWNC9ZiQaEnOwbpSIjSWPyL8 YL7HD3BQgT54Md7lKXCDu+cJAUJL1q+tw0temUuVInOeTcRkTDPtm8BWeSHx1YG0yf Lf5KXv3ydf3h/jODz53F66co+2IShLP7tOd7vaUY= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by sourceware.org (Postfix) with ESMTPS id A68C03858D37 for ; Wed, 30 Nov 2022 17:18:23 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org A68C03858D37 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2AUCgSZC021060 for ; Wed, 30 Nov 2022 09:18:23 -0800 Received: from dc5-exch02.marvell.com ([199.233.59.182]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3m3k6wgpev-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Wed, 30 Nov 2022 09:18:23 -0800 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Wed, 30 Nov 2022 09:18:20 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 30 Nov 2022 09:18:20 -0800 Received: from linux.wrightpinski.org.com (unknown [10.69.242.198]) by maili.marvell.com (Postfix) with ESMTP id 9A3C93F7051; Wed, 30 Nov 2022 09:18:20 -0800 (PST) To: CC: Andrew Pinski Subject: [PATCH 1/2] Fix C/107926: Wrong error message when initializing char array Date: Wed, 30 Nov 2022 09:18:14 -0800 Message-ID: <1669828695-18532-1-git-send-email-apinski@marvell.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 X-Proofpoint-GUID: CZZ2J-vkAOp0Y-FG0r8kZKQsltmGQ9Ly X-Proofpoint-ORIG-GUID: CZZ2J-vkAOp0Y-FG0r8kZKQsltmGQ9Ly X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-11-30_04,2022-11-30_02,2022-06-22_01 X-Spam-Status: No, score=-14.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_NONE, 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: apinski--- via Gcc-patches From: "Li, Pan2 via Gcc-patches" Reply-To: apinski@marvell.com Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" From: Andrew Pinski The problem here is the code which handles {"a"} is supposed to handle the case where the is something after the string but it only handles the case where there is another string so we go down the other path and error out saying "excess elements in struct initializer" even though this was a character array. To fix this, we need to move the ckeck if the initializer is a string after the check for array and initializer. OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions. Thanks, Adnrew Pinski gcc/c/ChangeLog: PR c/107926 * c-typeck.cc (process_init_element): Move the ceck for string cst until after the error message. gcc/testsuite/ChangeLog: PR c/107926 * gcc.dg/init-excess-3.c: New test. --- gcc/c/c-typeck.cc | 15 ++++++++++----- gcc/testsuite/gcc.dg/init-excess-3.c | 15 +++++++++++++++ 2 files changed, 25 insertions(+), 5 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/init-excess-3.c diff --git a/gcc/c/c-typeck.cc b/gcc/c/c-typeck.cc index e06f052..0fc382c 100644 --- a/gcc/c/c-typeck.cc +++ b/gcc/c/c-typeck.cc @@ -10623,17 +10623,22 @@ process_init_element (location_t loc, struct c_expr value, bool implicit, /* Handle superfluous braces around string cst as in char x[] = {"foo"}; */ - if (string_flag - && constructor_type + if (constructor_type && !was_designated && TREE_CODE (constructor_type) == ARRAY_TYPE && INTEGRAL_TYPE_P (TREE_TYPE (constructor_type)) && integer_zerop (constructor_unfilled_index)) { if (constructor_stack->replacement_value.value) - error_init (loc, "excess elements in % array initializer"); - constructor_stack->replacement_value = value; - return; + { + error_init (loc, "excess elements in % array initializer"); + return; + } + else if (string_flag) + { + constructor_stack->replacement_value = value; + return; + } } if (constructor_stack->replacement_value.value != NULL_TREE) diff --git a/gcc/testsuite/gcc.dg/init-excess-3.c b/gcc/testsuite/gcc.dg/init-excess-3.c new file mode 100644 index 0000000..7741261 --- /dev/null +++ b/gcc/testsuite/gcc.dg/init-excess-3.c @@ -0,0 +1,15 @@ +/* Test for various cases of excess initializers for char arrays, + bug 107926. */ +/* { dg-do compile } */ +/* { dg-options "" } */ + + +char s0[] = {"abc",1}; /* { dg-error "array initializer|near init" } */ +char s1[] = {"abc","a"}; /* { dg-error "array initializer|near init" } */ +char s2[] = {1,"abc"}; /* { dg-error "array initializer|near init|computable at load time" } */ +/* { dg-warning "integer from pointer without a cast" "" { target *-*-* } .-1 } */ + +char s3[5] = {"abc",1}; /* { dg-error "array initializer|near init" } */ +char s4[5] = {"abc","a"}; /* { dg-error "array initializer|near init" } */ +char s5[5] = {1,"abc"}; /* { dg-error "array initializer|near init|computable at load time" } */ +/* { dg-warning "integer from pointer without a cast" "" { target *-*-* } .-1 } */