[{"id":3676901,"web_url":"http://patchwork.ozlabs.org/comment/3676901/","msgid":"","list_archive_url":null,"date":"2026-04-13T19:50:12","subject":"Re: [PATCH] malloc: Remove unused aliases for malloc symbols","submitter":{"id":4387,"url":"http://patchwork.ozlabs.org/api/people/4387/","name":"H.J. Lu","email":"hjl.tools@gmail.com"},"content":"On Mon, Apr 13, 2026 at 8:59 PM Wilco Dijkstra wrote:\n>\n>\n> Malloc defines a lot of aliases which are unused not exported and not needed.\n>\n> Passes regress, OK for commit?\n>\n> ---\n>\n> diff --git a/malloc/malloc.c b/malloc/malloc.c\n> index cc4c09f67cd6ad1dac7787df222b5bbe77fb5828..40d314f0468fc9e6e077e5fe24dd755ccf331eed 100644\n> --- a/malloc/malloc.c\n> +++ b/malloc/malloc.c\n> @@ -5430,19 +5430,16 @@ __malloc_info (int options, FILE *fp)\n> #if IS_IN (libc)\n> weak_alias (__malloc_info, malloc_info)\n>\n> -strong_alias (__libc_calloc, __calloc) weak_alias (__libc_calloc, calloc)\n> -strong_alias (__libc_free, __free) strong_alias (__libc_free, free)\n> -strong_alias (__libc_malloc, __malloc) strong_alias (__libc_malloc, malloc)\n> -strong_alias (__libc_memalign, __memalign)\n> +weak_alias (__libc_calloc, calloc)\n> +strong_alias (__libc_free, free)\n> +strong_alias (__libc_malloc, malloc)\n> weak_alias (__libc_memalign, memalign)\n> -strong_alias (__libc_realloc, __realloc) strong_alias (__libc_realloc, realloc)\n> -strong_alias (__libc_valloc, __valloc) weak_alias (__libc_valloc, valloc)\n> -strong_alias (__libc_pvalloc, __pvalloc) weak_alias (__libc_pvalloc, pvalloc)\n> -strong_alias (__libc_mallinfo, __mallinfo)\n> +strong_alias (__libc_realloc, realloc)\n> +weak_alias (__libc_valloc, valloc)\n> +weak_alias (__libc_pvalloc, pvalloc)\n> weak_alias (__libc_mallinfo, mallinfo)\n> -strong_alias (__libc_mallinfo2, __mallinfo2)\n> weak_alias (__libc_mallinfo2, mallinfo2)\n> -strong_alias (__libc_mallopt, __mallopt) weak_alias (__libc_mallopt, mallopt)\n> +weak_alias (__libc_mallopt, mallopt)\n>\n> weak_alias (__malloc_stats, malloc_stats)\n> weak_alias (__malloc_usable_size, malloc_usable_size)\n>\n\nLGTM.\n\nReviewed-by: H.J. Lu \n\nThanks.","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","libc-alpha@sourceware.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","libc-alpha@sourceware.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=OycLr4kj;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org\n (client-ip=2620:52:6:3111::32; helo=vm01.sourceware.org;\n envelope-from=libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org;\n receiver=patchwork.ozlabs.org)","sourceware.org;\n\tdkim=pass (2048-bit key,\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=OycLr4kj","sourceware.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","sourceware.org; spf=pass smtp.mailfrom=gmail.com","server2.sourceware.org;\n arc=pass smtp.remote-ip=2607:f8b0:4864:20::634"],"Received":["from vm01.sourceware.org (vm01.sourceware.org\n [IPv6:2620:52:6:3111::32])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fvdM42Srpz1y2d\n\tfor ; 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Mon, 13 Apr 2026\n 12:50:48 -0700 (PDT)","MIME-Version":"1.0","References":"\n ","In-Reply-To":"\n ","From":"\"H.J. Lu\" ","Date":"Tue, 14 Apr 2026 03:50:12 +0800","X-Gm-Features":"AQROBzAfQL_2qZLlhXMZv3MC_pFW1VgJmIhaQ6CRDVg8KV6buquc-nh18TJHdTI","Message-ID":"\n ","Subject":"Re: [PATCH] malloc: Remove unused aliases for malloc symbols","To":"Wilco Dijkstra ","Cc":"glibc developers ","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable","X-BeenThere":"libc-alpha@sourceware.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Libc-alpha mailing list ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org"}},{"id":3676958,"web_url":"http://patchwork.ozlabs.org/comment/3676958/","msgid":"","list_archive_url":null,"date":"2026-04-13T23:03:14","subject":"Re: [PATCH] malloc: Remove unused aliases for malloc symbols","submitter":{"id":67598,"url":"http://patchwork.ozlabs.org/api/people/67598/","name":"Wilco Dijkstra","email":"Wilco.Dijkstra@arm.com"},"content":"Hi DJ,\n\n> I've heard some folks say that malloc should have an ifunc interface,\n> and I wonder if these may be needed then, but that's a then problem.\n\nIt's a \"now\" problem - Yury is looking at it!\n\nA real issue is that __libc_malloc now does need to be ifunc'd since it's exported\nunfortunately (no idea why that was done). It means we need to rename a lot\nto get that to work.\n\nAnother thing I need to think about is how to support no multiarch if that is\nstill required. We'd probably have to dispatch using a function pointer computed\nby the ifunc selector...\n\nCheers,\nWilco","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","libc-alpha@sourceware.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","libc-alpha@sourceware.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=arm.com header.i=@arm.com header.a=rsa-sha256\n header.s=selector1 header.b=ANM7iZ7H;\n\tdkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com\n header.a=rsa-sha256 header.s=selector1 header.b=ANM7iZ7H;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org\n (client-ip=2620:52:6:3111::32; helo=vm01.sourceware.org;\n envelope-from=libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org;\n receiver=patchwork.ozlabs.org)","sourceware.org;\n\tdkim=pass (1024-bit key,\n unprotected) header.d=arm.com header.i=@arm.com header.a=rsa-sha256\n header.s=selector1 header.b=ANM7iZ7H;\n\tdkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com\n header.a=rsa-sha256 header.s=selector1 header.b=ANM7iZ7H","sourceware.org;\n dmarc=pass (p=none dis=none) header.from=arm.com","sourceware.org; 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Ip=[4.158.2.129];\n Helo=[outbound-uk1.az.dlp.m.darktrace.com]","X-MS-Exchange-CrossTenant-AuthSource":"\n AM4PEPF00027A65.eurprd04.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Anonymous","X-MS-Exchange-CrossTenant-FromEntityHeader":"HybridOnPrem","X-BeenThere":"libc-alpha@sourceware.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Libc-alpha mailing list ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org"}},{"id":3677050,"web_url":"http://patchwork.ozlabs.org/comment/3677050/","msgid":"","list_archive_url":null,"date":"2026-04-14T07:39:01","subject":"Re: [PATCH] malloc: Remove unused aliases for malloc symbols","submitter":{"id":14312,"url":"http://patchwork.ozlabs.org/api/people/14312/","name":"Florian Weimer","email":"fweimer@redhat.com"},"content":"* Wilco Dijkstra:\n\n> Another thing I need to think about is how to support no multiarch if\n> that is still required. We'd probably have to dispatch using a\n> function pointer computed by the ifunc selector...\n\nNo-multiarch support should be relatively straightforward, given that we\nalso need to support targets without IFUNC support.\n\nThanks,\nFlorian","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","libc-alpha@sourceware.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","libc-alpha@sourceware.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=Hsq+JpSF;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org\n (client-ip=38.145.34.32; helo=vm01.sourceware.org;\n envelope-from=libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org;\n receiver=patchwork.ozlabs.org)","sourceware.org;\n\tdkim=pass (1024-bit key,\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=Hsq+JpSF","sourceware.org; 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