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GET /api/1.2/patches/833475/?format=api
{ "id": 833475, "url": "http://patchwork.ozlabs.org/api/1.2/patches/833475/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/39398177-ddf0-51de-78d1-7129062ab448@acm.org/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.2/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, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<39398177-ddf0-51de-78d1-7129062ab448@acm.org>", "list_archive_url": null, "date": "2017-11-02T18:24:21", "name": "[PR,c++/82710] false positive paren warning", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "0acf0694b18bb3701cf73b7949424e19f8b5b696", "submitter": { "id": 9970, "url": "http://patchwork.ozlabs.org/api/1.2/people/9970/?format=api", "name": "Nathan Sidwell", "email": "nathan@acm.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/39398177-ddf0-51de-78d1-7129062ab448@acm.org/mbox/", "series": [ { "id": 11561, "url": "http://patchwork.ozlabs.org/api/1.2/series/11561/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=11561", "date": "2017-11-02T18:24:21", "name": "[PR,c++/82710] false positive paren warning", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/11561/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/833475/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/833475/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<gcc-patches-return-465776-incoming=patchwork.ozlabs.org@gcc.gnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "mailing list gcc-patches@gcc.gnu.org" ], "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=gcc.gnu.org\n\t(client-ip=209.132.180.131; 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run by ezmlm", "Precedence": "bulk", "List-Id": "<gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<mailto:gcc-patches-unsubscribe-incoming=patchwork.ozlabs.org@gcc.gnu.org>", "List-Archive": "<http://gcc.gnu.org/ml/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-help@gcc.gnu.org>", "Sender": "gcc-patches-owner@gcc.gnu.org", "X-Virus-Found": "No", "X-Spam-SWARE-Status": "No, score=-10.6 required=5.0 tests=BAYES_00,\n\tFREEMAIL_FROM, GIT_PATCH_2, GIT_PATCH_3, KAM_ASCII_DIVIDERS,\n\tRCVD_IN_DNSWL_NONE, RCVD_IN_SORBS_SPAM,\n\tSPF_PASS autolearn=ham version=3.3.2 spammy=friend", "X-HELO": "mail-yw0-f171.google.com", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net;\n\ts=20161025;\n\th=x-gm-message-state:sender:to:from:subject:message-id:date\n\t:user-agent:mime-version:content-language;\n\tbh=AWIdmuESIIZCkPoLIYFRZS37HOXhG7GDKDdeeap54yE=;\n\tb=TN6BZrE6r8Iuyc94Yy6PtGhPJdC4DgyTxcE4ZqH5ibeh2VXcwDhc5AC7BI9ckupJ33\n\t/ECgRjFD1WMQIu3WyNaFbpJWPTtpa/CYcUu7Q/nLESVlUVn9ai6K4S/VybYnMRQhie8C\n\tiCragQaiB+Vl3Htn2PLT3NXw5rOLAKxku122Zvc6l4ekdzD3/MMDbHCN2jolmUKONQCL\n\tO0gKaIznJDqOboLiC1UAX0wZkAPnZrTOPUeE0nc4o4fI71W+qo2jCulGy713/tA/DHQm\n\tBe4cxdF7dZKBbMiSGxPxuBdwvfOKOP94zkjnAsbxg8D0vbHJNwLiNjQImvIDi+4Y8z+f\n\tsEWQ==", "X-Gm-Message-State": "AJaThX7V8SbD6AbuFGjR7S3QVdfEp9yHOMdBCMY0e+f0kL8nPTe7k4QJ\t8R4vPbNysWO+d+StQHaBXww=", "X-Google-Smtp-Source": "ABhQp+SC6g6B81iet9jmPEHDZxttdiumYGltVTkuSm0jxSxG1VYPVuLuzxrTKXguttBxRAgTwvYWpg==", "X-Received": "by 10.37.38.206 with SMTP id m197mr347495ybm.45.1509647063281;\n\tThu, 02 Nov 2017 11:24:23 -0700 (PDT)", "To": "GCC Patches <gcc-patches@gcc.gnu.org>", "From": "Nathan Sidwell <nathan@acm.org>", "Subject": "[PR c++/82710] false positive paren warning", "Message-ID": "<39398177-ddf0-51de-78d1-7129062ab448@acm.org>", "Date": "Thu, 2 Nov 2017 14:24:21 -0400", "User-Agent": "Mozilla/5.0 (X11; Linux x86_64;\n\trv:52.0) Gecko/20100101 Thunderbird/52.4.0", "MIME-Version": "1.0", "Content-Type": "multipart/mixed;\n\tboundary=\"------------29D8D53BCD0797298F29358B\"" }, "content": "This patch fixes pr82710, were we erroneously warn on something like:\n friend class_X (::other::name (...));\nthe parens are needed, otherwise the '::other' is taken to be a \nqualified lookup inside the class_X.\n\nUnfortunately, at the point we can check, we've lost information that \n'::' was used. So I back off when we see a qualified name there.\n\nnathan", "diff": "2017-11-02 Nathan Sidwell <nathan@acm.org>\n\n\tPR c++/82710\n\t* decl.c (grokdeclarator): Don't warn when parens protect a return\n\ttype from a qualified name.\n\n\tPR c++/82710\n\t* g++.dg/warn/pr82710.C: New.\n\nIndex: cp/decl.c\n===================================================================\n--- cp/decl.c\t(revision 254344)\n+++ cp/decl.c\t(working copy)\n@@ -10788,18 +10788,25 @@ grokdeclarator (const cp_declarator *dec\n \t\t\t\t\t attr_flags);\n \t}\n \n+ inner_declarator = declarator->declarator;\n+\n /* We don't want to warn in parmeter context because we don't\n \t yet know if the parse will succeed, and this might turn out\n \t to be a constructor call. */\n if (decl_context != PARM\n-\t && declarator->parenthesized != UNKNOWN_LOCATION)\n+\t && declarator->parenthesized != UNKNOWN_LOCATION\n+\t /* If the type is a class and the inner name used a global\n+\t namespace qualifier, we need the parens. Unfortunately\n+\t all we can tell is that a qualified name was used. */\n+\t && !(CLASS_TYPE_P (type)\n+\t && inner_declarator\n+\t && inner_declarator->kind == cdk_id\n+\t && inner_declarator->u.id.qualifying_scope))\n \twarning_at (declarator->parenthesized, OPT_Wparentheses,\n \t\t \"unnecessary parentheses in declaration of %qs\", name);\n if (declarator->kind == cdk_id || declarator->kind == cdk_decomp)\n \tbreak;\n \n- inner_declarator = declarator->declarator;\n-\n switch (declarator->kind)\n \t{\n \tcase cdk_array:\nIndex: testsuite/g++.dg/warn/pr82710.C\n===================================================================\n--- testsuite/g++.dg/warn/pr82710.C\t(revision 0)\n+++ testsuite/g++.dg/warn/pr82710.C\t(working copy)\n@@ -0,0 +1,32 @@\n+// { dg-additional-options -Wparentheses }\n+\n+// the MVP warning triggered on a friend decl. */\n+class X;\n+\n+namespace here \n+{\n+ // these friends\n+ X friendFunc1();\n+ X *friendFunc2 ();\n+ int friendFunc3 ();\n+}\n+\n+namespace nm\n+{\n+ namespace here \n+ {\n+ // Not these friends\n+ void friendFunc1 ();\n+ void friendFunc2 ();\n+ void friendFunc3 ();\n+ }\n+\n+ class TestClass\n+ {\n+ friend X (::here::friendFunc1 ()); // parens are needed\n+ friend X *(::here::friendFunc2 ()); // { dg-warning \"\" }\n+ friend X *::here::friendFunc2 ();\n+ friend int (::here::friendFunc3 ()); // { dg-warning \"\" }\n+ };\n+}\n+\n", "prefixes": [ "PR", "c++/82710" ] }