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GET /api/1.1/patches/2224714/?format=api
{ "id": 2224714, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2224714/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260417211459.445911-1-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": "<20260417211459.445911-1-polacek@redhat.com>", "date": "2026-04-17T21:14:59", "name": "c++/reflection: dependent type considered consteval-only [PR124855]", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "685d53fc17ca1dfa3a7eaa6761123ed81a7fd788", "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/20260417211459.445911-1-polacek@redhat.com/mbox/", "series": [ { "id": 500404, "url": "http://patchwork.ozlabs.org/api/1.1/series/500404/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=500404", "date": "2026-04-17T21:14:59", "name": "c++/reflection: dependent type considered consteval-only [PR124855]", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500404/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2224714/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2224714/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=QsfP4RIC;\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=1776460508;\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=/Kovd0PjpPRMRKjoAeCW2NdGX8246NSF+oolkWASo0A=;\n b=QsfP4RICLmu0D3jv7GOLLVSGP7eiROqxdqPliI4LeiGLzLF7YS39GMoXQd4VA/VMt25F+p\n 6alML513gzSZiDNTAIea+WYB6P7T00A009LB7p7SXgWZkfv8suExqajVg639ULsYXSEZZY\n y2axriLU9YYTcCpXuwL3wapOM6M3T54=", "X-MC-Unique": "X35DaWj8NNKu9rqC_rfCSw-1", "X-Mimecast-MFC-AGG-ID": "X35DaWj8NNKu9rqC_rfCSw_1776460505", "From": "Marek Polacek <polacek@redhat.com>", "To": "GCC Patches <gcc-patches@gcc.gnu.org>, Jason Merrill <jason@redhat.com>,\n Jakub Jelinek <jakub@redhat.com>", "Subject": "[PATCH] c++/reflection: dependent type considered consteval-only\n [PR124855]", "Date": "Fri, 17 Apr 2026 17:14:59 -0400", "Message-ID": "<20260417211459.445911-1-polacek@redhat.com>", "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": "1q1HCOxVATBlREr5JCUCmeKMkp_i_MAkebrZ9DBOV44_1776460505", "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": "Bootstrapped/regtested on x86_64-pc-linux-gnu, ok for trunk?\n\n-- >8 --\nHere we emit the \"function of consteval-only type must be declared\n'consteval'\" error for f, even though its type will become\nchar f(int) after substitution, which is not consteval-only. We\nprobably shouldn't consider dependent type consteval-only.\n\n\tPR c++/124855\n\ngcc/cp/ChangeLog:\n\n\t* reflect.cc (consteval_only_p): Return false if the type is\n\tdependent.\n\ngcc/testsuite/ChangeLog:\n\n\t* g++.dg/reflect/type11.C: New test.\n---\n gcc/cp/reflect.cc | 4 ++++\n gcc/testsuite/g++.dg/reflect/type11.C | 10 ++++++++++\n 2 files changed, 14 insertions(+)\n create mode 100644 gcc/testsuite/g++.dg/reflect/type11.C\n\n\nbase-commit: dd723b26663c76440ae44e83f0c699240c75b81e", "diff": "diff --git a/gcc/cp/reflect.cc b/gcc/cp/reflect.cc\nindex 97b6e76c652..167123b3f2d 100644\n--- a/gcc/cp/reflect.cc\n+++ b/gcc/cp/reflect.cc\n@@ -8630,6 +8630,10 @@ consteval_only_p (tree t)\n which could be consteval-only, depending on T. */\n t = complete_type (t);\n \n+ /* For dependent types we can't be sure if this type is consteval-only. */\n+ if (dependent_type_p (t))\n+ return false;\n+\n /* Classes with std::meta::info members are also consteval-only. */\n hash_set<tree> visited;\n return !!cp_walk_tree (&t, consteval_only_type_r, &visited, &visited);\ndiff --git a/gcc/testsuite/g++.dg/reflect/type11.C b/gcc/testsuite/g++.dg/reflect/type11.C\nnew file mode 100644\nindex 00000000000..11024ff4606\n--- /dev/null\n+++ b/gcc/testsuite/g++.dg/reflect/type11.C\n@@ -0,0 +1,10 @@\n+// PR c++/124855\n+// { dg-do compile { target c++26 } }\n+// { dg-additional-options \"-freflection\" }\n+\n+using mi = decltype(^^::);\n+\n+template<class T>\n+auto f(T) -> [: ^^T == ^^int ? ^^char : mi{} :];\n+\n+static_assert(sizeof(f(0)) == 1);\n", "prefixes": [] }