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GET /api/1.1/patches/2223672/?format=api
{ "id": 2223672, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2223672/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260415235200.1576761-1-polacek@redhat.com/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.1/projects/17/?format=api", "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": "<20260415235200.1576761-1-polacek@redhat.com>", "date": "2026-04-15T23:52:00", "name": "c++/reflection: null reflection in inform_tree_category", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "b58f7461971f7496c46ac19ca4b1d441d5d1c795", "submitter": { "id": 14370, "url": "http://patchwork.ozlabs.org/api/1.1/people/14370/?format=api", "name": "Marek Polacek", "email": "polacek@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20260415235200.1576761-1-polacek@redhat.com/mbox/", "series": [ { "id": 500055, "url": "http://patchwork.ozlabs.org/api/1.1/series/500055/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=500055", "date": "2026-04-15T23:52:00", "name": "c++/reflection: null reflection in inform_tree_category", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500055/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2223672/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223672/checks/", "tags": {}, "headers": { "Return-Path": "<gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org>", "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\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=gKhhlUjD;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::32; 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server2.sourceware.org", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1776297128;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding;\n bh=bjXr+AzgR1BLa4WC4xw5MrMURB5ZJmLM8GmDm00eKAo=;\n b=gKhhlUjD97Qhe2EsSwn/1P2UV76ccs4ReqSuWOulaebXbmAt6PUTD81/8UudSl2CjWgVbL\n Q5ooes91mRviqTvXJUqNY7q3A5XKefkUZDU3nBhJUBN2MEDCjYi9iCvfQlgfVvUKgMSkhQ\n 3XmJneAsHZCLA9oL7div01akQUAVYAg=", "X-MC-Unique": "vvNOn--nOS65Ru81IcjRdQ-1", "X-Mimecast-MFC-AGG-ID": "vvNOn--nOS65Ru81IcjRdQ_1776297126", "From": "Marek Polacek <polacek@redhat.com>", "To": "Jason Merrill <jason@redhat.com>,\n\tGCC Patches <gcc-patches@gcc.gnu.org>", "Subject": "[PATCH] c++/reflection: null reflection in inform_tree_category", "Date": "Wed, 15 Apr 2026 19:52:00 -0400", "Message-ID": "<20260415235200.1576761-1-polacek@redhat.com>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 3.4.1 on 10.30.177.93", "X-Mimecast-Spam-Score": "0", "X-Mimecast-MFC-PROC-ID": "kLwhUnwvhcTNFu9b0iq6Lv2h8xT3atAqUMzflPBkUf4_1776297126", "X-Mimecast-Originator": "redhat.com", "Content-Transfer-Encoding": "8bit", "content-type": "text/plain; charset=\"US-ASCII\"; x-default=true", "X-BeenThere": "gcc-patches@gcc.gnu.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Gcc-patches mailing list <gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<https://gcc.gnu.org/mailman/options/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe>", "List-Archive": "<https://gcc.gnu.org/pipermail/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-request@gcc.gnu.org?subject=help>", "List-Subscribe": "<https://gcc.gnu.org/mailman/listinfo/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe>", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "Tested reflect/* on x86_64-pc-linux-gnu, ok for trunk?\n\n-- >8 --\nHere we are printing:\n\n note: but ''lang_type' not supported by dump_expr<expression error>' is a type\n\nbecause we represent a null reflection with unknown_type_node. Let's\nnot print anything in that case; unknown_type_node can also be\n<unresolved overloaded function type>.\n\ngcc/cp/ChangeLog:\n\n\t* error.cc (inform_tree_category): Don't print unknown_type_node.\n\ngcc/testsuite/ChangeLog:\n\n\t* g++.dg/reflect/null6.C: New test.\n---\n gcc/cp/error.cc | 2 +-\n gcc/testsuite/g++.dg/reflect/null6.C | 8 ++++++++\n 2 files changed, 9 insertions(+), 1 deletion(-)\n create mode 100644 gcc/testsuite/g++.dg/reflect/null6.C\n\n\nbase-commit: 77d4080e1e5f9d467816e2e2e878edbfbb7ee1c1", "diff": "diff --git a/gcc/cp/error.cc b/gcc/cp/error.cc\nindex b3e66924e31..f0097bf6808 100644\n--- a/gcc/cp/error.cc\n+++ b/gcc/cp/error.cc\n@@ -3988,7 +3988,7 @@ inform_tree_category (tree t)\n if (TREE_CODE (t) == TYPE_DECL)\n t = TREE_TYPE (t);\n \n- if (TYPE_P (t))\n+ if (TYPE_P (t) && t != unknown_type_node)\n inform (loc, \"but %qE is a type\", t);\n else if (EXPR_P (t))\n inform (loc, \"but %qE is an expression\", t);\ndiff --git a/gcc/testsuite/g++.dg/reflect/null6.C b/gcc/testsuite/g++.dg/reflect/null6.C\nnew file mode 100644\nindex 00000000000..55bf15ef959\n--- /dev/null\n+++ b/gcc/testsuite/g++.dg/reflect/null6.C\n@@ -0,0 +1,8 @@\n+// { dg-do compile { target c++26 } }\n+// { dg-additional-options \"-freflection\" }\n+\n+using info = decltype(^^::);\n+constexpr auto null = info{};\n+constexpr auto q = [:null:]; // { dg-error \"expected a reflection of an expression\" }\n+// { dg-message \"add .typename.\" \"\" { target *-*-* } .-1 }\n+// { dg-bogus \"is a type\" \"\" { target *-*-* } .-2 }\n", "prefixes": [] }