From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 112606 invoked by alias); 5 Dec 2019 16:19:47 -0000 Mailing-List: contact libc-stable-help@sourceware.org; run by ezmlm Precedence: bulk List-Post: List-Help: List-Subscribe: List-Archive: Sender: libc-stable-owner@sourceware.org Received: (qmail 112585 invoked by uid 89); 5 Dec 2019 16:19:46 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Checked: by ClamAV 0.100.3 on sourceware.org X-Virus-Found: No X-Spam-SWARE-Status: No, score=-18.6 required=5.0 tests=AWL,BAYES_00,GIT_PATCH_0,GIT_PATCH_1,GIT_PATCH_2,GIT_PATCH_3 autolearn=ham version=3.3.1 spammy=HTo:U*libc-stable X-Spam-Status: No, score=-18.6 required=5.0 tests=AWL,BAYES_00,GIT_PATCH_0,GIT_PATCH_1,GIT_PATCH_2,GIT_PATCH_3 autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on sourceware.org X-Spam-Level: X-HELO: us-smtp-1.mimecast.com Received: from us-smtp-delivery-1.mimecast.com (HELO us-smtp-1.mimecast.com) (207.211.31.120) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 05 Dec 2019 16:19:45 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1575562784; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=yc8bEw/VIoiZwncQgnXGS7g2m0ZJv2Cl+VxyazQ+hdk=; b=DtKenJZHPamY3wf6LVnAEneEA8u79SYYjh4ISLT5/vkxlCmnWt+lyAZftkxEk15XCzkZm9 Iys8TxkxyH5dedtC2n94epZ+fwv/dqHxQyWWueMmc/bufDIdLixewGIiVIP/ljaXaf+ULD 4SRRbBZYYsxzfj88AykDCFsnWymP8NA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-195-K49aRMqBMmm0VnxEdvcqcg-1; Thu, 05 Dec 2019 11:19:40 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D7756DC21 for ; Thu, 5 Dec 2019 16:19:38 +0000 (UTC) Received: from oldenburg2.str.redhat.com (dhcp-192-227.str.redhat.com [10.33.192.227]) by smtp.corp.redhat.com (Postfix) with ESMTPS id AE3766012A for ; Thu, 5 Dec 2019 16:19:38 +0000 (UTC) Received: by oldenburg2.str.redhat.com (Postfix, from userid 1000) id 20AE1B970F2F; Thu, 5 Dec 2019 17:19:37 +0100 (CET) Date: Tue, 01 Jan 2019 00:00:00 -0000 To: libc-stable@sourceware.org Subject: [2.28 COMMITTED] : Define __CORRECT_ISO_CPP_STRING_H_PROTO for Clang [BZ #25232] User-Agent: Heirloom mailx 12.5 7/5/10 MIME-Version: 1.0 Message-Id: <20191205161937.20AE1B970F2F@oldenburg2.str.redhat.com> From: Florian Weimer X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-MC-Unique: K49aRMqBMmm0VnxEdvcqcg-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2019-12/txt/msg00003.txt.bz2 From: Kamlesh Kumar Without the asm redirects, strchr et al. are not const-correct. libc++ has a wrapper header that works with and without __CORRECT_ISO_CPP_STRING_H_PROTO (using a Clang extension). But when Clang is used with libstdc++ or just C headers, the overloaded functions with the correct types are not declared. This change does not impact current GCC (with libstdc++ or libc++). (cherry picked from commit 953ceff17a4a15b10cfdd5edc3c8cae4884c8ec3) diff --git a/NEWS b/NEWS index d488f14ae5..ace1b86fdb 100644 --- a/NEWS +++ b/NEWS @@ -72,6 +72,7 @@ The following bugs are resolved with this release: [25203] libio: Disable vtable validation for pre-2.1 interposed handles [25204] Ignore LD_PREFER_MAP_32BIT_EXEC for SUID programs [25225] ld.so fails to link on x86 if GCC defaults to -fcf-protection + [25232] No const correctness for strchr et al. for Clang++ Security related changes: diff --git a/string/string.h b/string/string.h index 150cfd8b13..22cd0fa08f 100644 --- a/string/string.h +++ b/string/string.h @@ -33,7 +33,8 @@ __BEGIN_DECLS #include /* Tell the caller that we provide correct C++ prototypes. */ -#if defined __cplusplus && __GNUC_PREREQ (4, 4) +#if defined __cplusplus && (__GNUC_PREREQ (4, 4) \ + || __glibc_clang_prereq (3, 5)) # define __CORRECT_ISO_CPP_STRING_H_PROTO #endif