{"id":2231881,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2231881/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/20260501134419.2872932-1-ncm@cantrip.org/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/1.1/projects/17/?format=json","name":"GNU Compiler Collection","link_name":"gcc","list_id":"gcc-patches.gcc.gnu.org","list_email":"gcc-patches@gcc.gnu.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<20260501134419.2872932-1-ncm@cantrip.org>","date":"2026-05-01T13:40:49","name":"gcc/doc: Clarify warning for variable unused","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"ce85c5a5bd2c8f2cd9fc1aab762aef239d164e48","submitter":{"id":90892,"url":"http://patchwork.ozlabs.org/api/1.1/people/90892/?format=json","name":"Nathan Myers","email":"ncm@cantrip.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/20260501134419.2872932-1-ncm@cantrip.org/mbox/","series":[{"id":502460,"url":"http://patchwork.ozlabs.org/api/1.1/series/502460/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=502460","date":"2026-05-01T13:40:49","name":"gcc/doc: Clarify warning for variable unused","version":1,"mbox":"http://patchwork.ozlabs.org/series/502460/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2231881/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2231881/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","gcc-patches@gcc.gnu.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","gcc-patches@gcc.gnu.org"],"Authentication-Results":["legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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a=rsa-sha256; d=sourceware.org; s=key; t=1777643067; cv=none;\n b=fs59il8y7LIaAVCfTuE/uSY0cXAi4LjIUeUJ07IAQFK2KKOvyI0jN+op3v17zUmZikCdIJpyiFufPp+rJQyGkDXtFUi89jIu/sywmkrksFx5xLJj2QL2XubcW5GOn/DI/keRWPmNpGtCv7ZCdFEvjZvfKlv9I+bcvO/bJmFSEZ8=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=sourceware.org; s=key;\n t=1777643067; c=relaxed/simple;\n bh=lnbxbCi6UB+tnPIfIZMVU7P+GkeCJnIFBeEWcTNfCnA=;\n h=From:To:Subject:Date:Message-ID:MIME-Version;\n b=bDrI9v2vcrffXYEopj1JBix0TTtzJsWY70Bf4CmPGcbmLJfi0g70CCcwnaCTiHnIhRUaKHJB76EI/fvlwhDvJ88YHwesztD0y/PuECnKtDEkz4twUvY2t+gtzOcpoUn8IaXOCJI4L8D82Bs7U87NLpVs97CKOldyTZkbBWEIX3g=","ARC-Authentication-Results":"i=1; server2.sourceware.org","X-MC-Unique":"cTw7K3T2MdirMT9GSXLbMg-1","X-Mimecast-MFC-AGG-ID":"cTw7K3T2MdirMT9GSXLbMg_1777643062","From":"Nathan Myers ","To":"gcc-patches@gcc.gnu.org,\n\tlibstdc++@gcc.gnu.org","Subject":"[PATCH] gcc/doc: Clarify warning for variable unused","Date":"Fri, 1 May 2026 09:40:49 -0400","Message-ID":"<20260501134419.2872932-1-ncm@cantrip.org>","MIME-Version":"1.0","X-Scanned-By":"MIMEDefang 3.4.1 on 10.30.177.111","X-Mimecast-Spam-Score":"0","X-Mimecast-MFC-PROC-ID":"SmXv2MOrl0XIxAEVNhbbT-TtnMagGZaoVh9vya4wQjk_1777643062","X-Mimecast-Originator":"cantrip.org","Content-Transfer-Encoding":"quoted-printable","content-type":"text/plain; charset=WINDOWS-1252; x-default=true","X-BeenThere":"gcc-patches@gcc.gnu.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Gcc-patches mailing list ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org"},"content":"[Guessing this should be in the 16.x branch too.]\n\nIn the www gcc-16/porting_to, two lines in comment text on\nthe example code for -Wunused-variable was changed from\n\"pre/postincrement used\" to \"pre/postincrement result used\".\nApproval there directs that the change should be propagated\nback to the texi source the example came from. This is that\npropagation.\n\ngcc/Changelog:\n\t* doc/invoke.texi: insert \"result\" in comment text\n---\n gcc/doc/invoke.texi | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)","diff":"diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi\nindex bebe20c5e0b..63e1a3bbc56 100644\n--- a/gcc/doc/invoke.texi\n+++ b/gcc/doc/invoke.texi\n@@ -8319,10 +8319,10 @@ void foo (void)\n int f = 0; // No warning, f used\n int g = f = 5;\n (void) g;\n- int h = 0; // No warning, preincrement used\n+ int h = 0; // No warning, preincrement result used\n int i = ++h;\n (void) i;\n- int j = 0; // No warning, postdecrement used\n+ int j = 0; // No warning, postdecrement result used\n int k = j--;\n (void) k;\n int l = 0; // No warning, l used\n","prefixes":[]}