[{"id":3679867,"web_url":"http://patchwork.ozlabs.org/comment/3679867/","msgid":"","list_archive_url":null,"date":"2026-04-21T12:52:33","subject":"Re: [PATCH] s390: Remove Wno-CFLAGS for rtld.c/dl-load.c/dl-reloc.c","submitter":{"id":14312,"url":"http://patchwork.ozlabs.org/api/people/14312/","name":"Florian Weimer","email":"fweimer@redhat.com"},"content":"* Stefan Liebler:\n\n> While review of s390-32 removal, Adhemerval asked if those CFLAGS are still\n> necessary:\n> https://inbox.sourceware.org/libc-alpha/20260409085102.3475867-1-stli@linux.ibm.com/T/#me5120906445f3941031e29c3a093f1699eae77b4\n>\n> According to the git-history, the first s390-Makefile was introduced back in\n> 2000-08-02 with those CFLAGS. The same are also included now and past in\n> i386-Makefile. But I haven't found a reason why those were added in the past\n> and if it was really necessary on s390. I assume it was with old GCCs most\n> likely due to inclusion of dl-machine.h.\n>\n> This patch removes those CFLAGS. If needed, we have to circumvent the issues\n> again. At least I've used current GCCs 12.5, 13.4, 14.3, 15.2 and gcc-head\n> to successfully build current glibc on s390-64 with -O2, -O3 and -Os without\n> such warnings.\n> ---\n> sysdeps/s390/Makefile | 4 ----\n> 1 file changed, 4 deletions(-)\n>\n> diff --git a/sysdeps/s390/Makefile b/sysdeps/s390/Makefile\n> index 29d11dfdab..85446ca0b3 100644\n> --- a/sysdeps/s390/Makefile\n> +++ b/sysdeps/s390/Makefile\n> @@ -47,10 +47,6 @@ $(modpfx)gconv-modules-s390.conf: ../sysdeps/s390/gconv-modules-s390.conf \\\n> endif\n> \n> ifeq ($(subdir),elf)\n> -CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused\n> -CFLAGS-dl-load.c += -Wno-unused\n> -CFLAGS-dl-reloc.c += -Wno-unused\n> -\n> $(objpfx)tst-glibc-hwcaps: \\\n> $(objpfx)libmarkermod2-1.so \\\n> $(objpfx)libmarkermod3-1.so \\\n\nLooks okay, thanks.\n\nReviewed-by: Florian Weimer \n\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=XP2LCDPj;\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; 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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1776775962;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n in-reply-to:in-reply-to:references:references;\n bh=JDYvPN432TsvaYb+UAlZWSK5Ba/+0vtbLpu2OGmzI20=;\n b=XP2LCDPjWtDOPRCwT5PPZqC7HT4HjvtRS/7Abe01t2luCvsyD7Xtdcw7NE/kKV/MoaWPbh\n hw5K+DVfZG7pNKDhdogbpLCa2HbWrfjMyZz9D0wHt6wbMKwd0voDx2umB3BnVcuK0EZiho\n x2jCd6BAg3ZcT12hxuOl3P2x6S4pBAQ=","X-MC-Unique":"-Ce8hC6yPd-PN1-Ta5H7yw-1","X-Mimecast-MFC-AGG-ID":"-Ce8hC6yPd-PN1-Ta5H7yw_1776775957","From":"Florian Weimer ","To":"Stefan Liebler ","Cc":"libc-alpha@sourceware.org, Adhemerval Zanella Netto\n ","Subject":"Re: [PATCH] s390: Remove Wno-CFLAGS for rtld.c/dl-load.c/dl-reloc.c","In-Reply-To":"<20260421125015.3313313-1-stli@linux.ibm.com> (Stefan Liebler's\n message of \"Tue, 21 Apr 2026 14:50:15 +0200\")","References":"<20260421125015.3313313-1-stli@linux.ibm.com>","Date":"Tue, 21 Apr 2026 14:52:33 +0200","Message-ID":"","User-Agent":"Gnus/5.13 (Gnus v5.13)","MIME-Version":"1.0","X-Scanned-By":"MIMEDefang 3.0 on 10.30.177.12","X-Mimecast-Spam-Score":"0","X-Mimecast-MFC-PROC-ID":"39iswtwyDq8UwqD2G4rqy6if6RKpyeaJFevBYkBzTLU_1776775957","X-Mimecast-Originator":"redhat.com","Content-Type":"text/plain","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":3679871,"web_url":"http://patchwork.ozlabs.org/comment/3679871/","msgid":"<000effcd-6486-4bea-af4e-7d3c4f02b2d3@linux.ibm.com>","list_archive_url":null,"date":"2026-04-21T12:55:51","subject":"Re: [PATCH] s390: Remove Wno-CFLAGS for rtld.c/dl-load.c/dl-reloc.c","submitter":{"id":74280,"url":"http://patchwork.ozlabs.org/api/people/74280/","name":"Stefan Liebler","email":"stli@linux.ibm.com"},"content":"On 4/21/26 14:52, Florian Weimer wrote:\n> * Stefan Liebler:\n> \n>> While review of s390-32 removal, Adhemerval asked if those CFLAGS are still\n>> necessary:\n>> https://inbox.sourceware.org/libc-alpha/20260409085102.3475867-1-stli@linux.ibm.com/T/#me5120906445f3941031e29c3a093f1699eae77b4\n>>\n>> According to the git-history, the first s390-Makefile was introduced back in\n>> 2000-08-02 with those CFLAGS. The same are also included now and past in\n>> i386-Makefile. But I haven't found a reason why those were added in the past\n>> and if it was really necessary on s390. I assume it was with old GCCs most\n>> likely due to inclusion of dl-machine.h.\n>>\n>> This patch removes those CFLAGS. If needed, we have to circumvent the issues\n>> again. At least I've used current GCCs 12.5, 13.4, 14.3, 15.2 and gcc-head\n>> to successfully build current glibc on s390-64 with -O2, -O3 and -Os without\n>> such warnings.\n>> ---\n>> sysdeps/s390/Makefile | 4 ----\n>> 1 file changed, 4 deletions(-)\n>>\n>> diff --git a/sysdeps/s390/Makefile b/sysdeps/s390/Makefile\n>> index 29d11dfdab..85446ca0b3 100644\n>> --- a/sysdeps/s390/Makefile\n>> +++ b/sysdeps/s390/Makefile\n>> @@ -47,10 +47,6 @@ $(modpfx)gconv-modules-s390.conf: ../sysdeps/s390/gconv-modules-s390.conf \\\n>> endif\n>> \n>> ifeq ($(subdir),elf)\n>> -CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused\n>> -CFLAGS-dl-load.c += -Wno-unused\n>> -CFLAGS-dl-reloc.c += -Wno-unused\n>> -\n>> $(objpfx)tst-glibc-hwcaps: \\\n>> $(objpfx)libmarkermod2-1.so \\\n>> $(objpfx)libmarkermod3-1.so \\\n> \n> Looks okay, thanks.\n> \n> Reviewed-by: Florian Weimer \n> \n> Florian\n> \nCommitted.\nThanks,\nStefan","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=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=hPUtiBhV;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org\n (client-ip=38.145.34.32; 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