From patchwork Mon Sep 20 17:06:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Polacek X-Patchwork-Id: 45205 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 74A7D3858D3C for ; Mon, 20 Sep 2021 17:08:18 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 74A7D3858D3C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1632157698; bh=j7ZTiCxWc6CLX3ObQ5eoVRza+GatEnKBfXMi+PDl6Dw=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=nYD1ZGERjqXFRl+gDZZnmX00X2cp24ROrRHu/22+q+vX8CVrCNorLgoNMnXYg0dSp wc4I6qUEeqBqzplKFqiawkTUuBA1EAZgB8wrGOLH3Vw/aO49J7K/+WSMpS/4zuHwe2 lsoodi50DV3Ca3Gg87AvIEsy/kFMVXWOkhCfmLcw= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTP id 6113E3858C3A for ; Mon, 20 Sep 2021 17:07:10 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 6113E3858C3A Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-536-4_6MM2s5MmyE00bOdEUIQA-1; Mon, 20 Sep 2021 13:07:08 -0400 X-MC-Unique: 4_6MM2s5MmyE00bOdEUIQA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id EBA77100C611 for ; Mon, 20 Sep 2021 17:07:07 +0000 (UTC) Received: from pdp-11.redhat.com (unknown [10.22.34.126]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9E26B6D98B for ; Mon, 20 Sep 2021 17:07:07 +0000 (UTC) To: GCC Patches Subject: [PATCH] attribs: Implement -Wno-attributes=vendor::attr [PR101940] Date: Mon, 20 Sep 2021 13:06:58 -0400 Message-Id: <20210920170658.28014-1-polacek@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-14.9 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Marek Polacek via Gcc-patches From: Marek Polacek Reply-To: Marek Polacek Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" It is desirable for -Wattributes to warn about e.g. [[deprecate]] void g(); // typo, should warn However, -Wattributes also warns about vendor-specific attributes (that's because lookup_scoped_attribute_spec -> find_attribute_namespace finds nothing), which, with -Werror, causes grief. We don't want the -Wattributes warning for [[company::attr]] void f(); GCC warns because it doesn't know the "company" namespace; it only knows the "gnu" and "omp" namespaces. We could entirely disable warning about attributes in unknown scopes but then the compiler would also miss typos like [[company::attrx]] void f(); or [[gmu::warn_used_result]] int write(); so that is not a viable solution. A workaround is to use a #pragma: #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wattributes" [[company::attr]] void f() {} #pragma GCC diagnostic pop but that's a mouthful and awkward to use and could also hide typos. In fact, any macro-based solution doesn't seem like a way forward. This patch implements -Wno-attributes=, which takes these arguments: company::attr company:: clang The last one is a special option to ignore clang-only attributes; in this patch it is accepted but currently has no effect. This option should go well with using @file: the user could have a file containing -Wno-attributes=vendor::attr1,vendor::attr2 and then invoke gcc with '@attrs' or similar. I've also added a new pragma which has the same effect: The pragma along with the new option should help with various static analysis tools. Bootstrapped/regtested on x86_64-pc-linux-gnu, ok for trunk? PR c++/101940 gcc/ChangeLog: * attribs.c (struct scoped_attributes): Add a bool member. (lookup_scoped_attribute_spec): Forward declare. (register_scoped_attributes): New bool parameter, defaulted to false. Use it. (handle_ignored_attributes_option): New function. (free_attr_data): New function. (init_attributes): Call handle_ignored_attributes_option. (attr_namespace_ignored_p): New function. (decl_attributes): Check attr_namespace_ignored_p before warning. * attribs.h (free_attr_data): Declare. (register_scoped_attributes): Adjust declaration. (handle_ignored_attributes_option): Declare. * common.opt (Wattributes=): New option with a variable. * doc/extend.texi: Document #pragma GCC diagnostic ignored_attributes. * doc/invoke.texi: Document -Wno-attributes=. * opts.c (common_handle_option) : Handle. * plugin.h (register_scoped_attributes): Adjust declaration. gcc/c-family/ChangeLog: * c-pragma.c (handle_pragma_diagnostic): Handle #pragma GCC diagnostic ignored_attributes. gcc/c/ChangeLog: * c-decl.c (c_parse_final_cleanups): Call free_attr_data. gcc/cp/ChangeLog: * decl2.c (c_parse_final_cleanups): Call free_attr_data. gcc/testsuite/ChangeLog: * c-c++-common/Wno-attributes-1.c: New test. * c-c++-common/Wno-attributes-2.c: New test. --- gcc/attribs.c | 122 +++++++++++++++++- gcc/attribs.h | 5 +- gcc/c-family/c-pragma.c | 22 +++- gcc/c/c-decl.c | 2 + gcc/common.opt | 9 +- gcc/cp/decl2.c | 2 + gcc/doc/extend.texi | 19 +++ gcc/doc/invoke.texi | 18 +++ gcc/opts.c | 14 ++ gcc/plugin.h | 4 +- gcc/testsuite/c-c++-common/Wno-attributes-1.c | 40 ++++++ gcc/testsuite/c-c++-common/Wno-attributes-2.c | 41 ++++++ 12 files changed, 289 insertions(+), 9 deletions(-) create mode 100644 gcc/testsuite/c-c++-common/Wno-attributes-1.c create mode 100644 gcc/testsuite/c-c++-common/Wno-attributes-2.c base-commit: 1949d7540a0322993bcae2f8893e2dbd29209040 diff --git a/gcc/attribs.c b/gcc/attribs.c index 83fafc98b7d..c85f3aedc4d 100644 --- a/gcc/attribs.c +++ b/gcc/attribs.c @@ -87,6 +87,8 @@ struct scoped_attributes const char *ns; vec attributes; hash_table *attribute_hash; + /* True if we should not warn about unknown attributes in this NS. */ + bool ignored_p; }; /* The table of scope attributes. */ @@ -95,6 +97,8 @@ static vec attributes_table; static scoped_attributes* find_attribute_namespace (const char*); static void register_scoped_attribute (const struct attribute_spec *, scoped_attributes *); +static const struct attribute_spec *lookup_scoped_attribute_spec (const_tree, + const_tree); static bool attributes_initialized = false; @@ -121,12 +125,14 @@ extract_attribute_substring (struct substring *str) /* Insert an array of attributes ATTRIBUTES into a namespace. This array must be NULL terminated. NS is the name of attribute - namespace. The function returns the namespace into which the - attributes have been registered. */ + namespace. IGNORED_P is true iff all unknown attributes in this + namespace should be ignored for the purposes of -Wattributes. The + function returns the namespace into which the attributes have been + registered. */ scoped_attributes * register_scoped_attributes (const struct attribute_spec *attributes, - const char *ns) + const char *ns, bool ignored_p /*=false*/) { scoped_attributes *result = NULL; @@ -144,9 +150,12 @@ register_scoped_attributes (const struct attribute_spec *attributes, memset (&sa, 0, sizeof (sa)); sa.ns = ns; sa.attributes.create (64); + sa.ignored_p = ignored_p; result = attributes_table.safe_push (sa); result->attribute_hash = new hash_table (200); } + else + result->ignored_p |= ignored_p; /* Really add the attributes to their namespace now. */ for (unsigned i = 0; attributes[i].name != NULL; ++i) @@ -224,6 +233,94 @@ check_attribute_tables (void) attribute_tables[j][l].name)); } +/* Used to stash pointers to allocated memory so that we can free them at + the end of parsing of all TUs. */ +static vec ignored_attributes_table; + +/* Parse arguments ARGS of -Wno-attributes=. + Currently we accept: + vendor::attr + vendor:: + and as a special case: + clang + This functions also registers the parsed attributes so that we don't + warn that we don't recognize them. */ + +void +handle_ignored_attributes_option (vec *v) +{ + if (v == nullptr) + return; + + for (auto opt : v) + { + if (strcmp (opt, "clang") == 0) + { + // TODO + continue; + } + char *q = strstr (opt, "::"); + /* We don't accept '::attr'. */ + if (q == nullptr || q == opt) + { + error ("wrong argument to ignored attributes"); + inform (input_location, "valid format is %, %, " + "or %"); + continue; + } + /* Cut off the vendor part. */ + *q = '\0'; + const char *vendor = opt; + char *attr = q + 2; + /* Verify that they look valid. */ + auto valid_p = [](const char *s) { + for (; *s != '\0'; ++s) + if (!ISALNUM (*s) && *s != '_') + return false; + return true; + }; + if (!valid_p (vendor) || !valid_p (attr)) + { + error ("wrong argument to ignored attributes"); + continue; + } + /* Turn "__attr__" into "attr" so that we have a canonical form of + attribute names. */ + const size_t l = strlen (attr); + if (l > 4 && attr[0] == '_' && attr[1] == '_' + && attr[l - 1] == '_' && attr[l - 2] == '_') + { + attr[l - 2] = '\0'; + attr += 2; + } + /* If we've already seen this vendor::attr, ignore it. Attempting to + register it twice would lead to a crash. */ + if (lookup_scoped_attribute_spec (get_identifier (vendor), + get_identifier (attr))) + continue; + /* In the "vendor::" case, we should ignore *any* attribute coming + from this attribute namespace. */ + const bool ignored_ns = attr[0] == '\0'; + /* Create a table with extra attributes which we will register. + We can't free it here, so squirrel away the pointers. */ + attribute_spec *table = new attribute_spec[2]; + ignored_attributes_table.safe_push (table); + table[0] = { ignored_ns ? nullptr : attr, 0, 0, false, false, + false, false, nullptr, nullptr }; + table[1] = { nullptr, 0, 0, false, false, false, false, nullptr, nullptr }; + register_scoped_attributes (table, vendor, ignored_ns); + } +} + +/* Free data we might have allocated when adding extra attributes. */ + +void +free_attr_data () +{ + for (auto x : ignored_attributes_table) + delete[] x; +} + /* Initialize attribute tables, and make some sanity checks if checking is enabled. */ @@ -252,6 +349,9 @@ init_attributes (void) /* Put all the GNU attributes into the "gnu" namespace. */ register_scoped_attributes (attribute_tables[i], "gnu"); + vec *ignored = (vec *) flag_ignored_attributes; + handle_ignored_attributes_option (ignored); + invoke_plugin_callbacks (PLUGIN_ATTRIBUTES, NULL); attributes_initialized = true; } @@ -456,6 +556,19 @@ diag_attr_exclusions (tree last_decl, tree node, tree attrname, return found; } +/* Return true iff we should not complain about unknown attributes + coming from the attribute namespace NS. This is the case for + the -Wno-attributes=ns:: command-line option. */ + +static bool +attr_namespace_ignored_p (tree ns) +{ + if (ns == NULL_TREE) + return false; + scoped_attributes *r = find_attribute_namespace (IDENTIFIER_POINTER (ns)); + return r && r->ignored_p; +} + /* Process the attributes listed in ATTRIBUTES and install them in *NODE, which is either a DECL (including a TYPE_DECL) or a TYPE. If a DECL, it should be modified in place; if a TYPE, a copy should be created @@ -556,7 +669,8 @@ decl_attributes (tree *node, tree attributes, int flags, if (spec == NULL) { - if (!(flags & (int) ATTR_FLAG_BUILT_IN)) + if (!(flags & (int) ATTR_FLAG_BUILT_IN) + && !attr_namespace_ignored_p (ns)) { if (ns == NULL_TREE || !cxx11_attr_p) warning (OPT_Wattributes, "%qE attribute directive ignored", diff --git a/gcc/attribs.h b/gcc/attribs.h index 138c509bce1..96a527f67a9 100644 --- a/gcc/attribs.h +++ b/gcc/attribs.h @@ -21,6 +21,7 @@ along with GCC; see the file COPYING3. If not see #define GCC_ATTRIBS_H extern const struct attribute_spec *lookup_attribute_spec (const_tree); +extern void free_attr_data (); extern void init_attributes (void); /* Process the attributes listed in ATTRIBUTES and install them in *NODE, @@ -40,12 +41,14 @@ extern void apply_tm_attr (tree, tree); extern tree make_attribute (const char *, const char *, tree); extern struct scoped_attributes* register_scoped_attributes (const struct attribute_spec *, - const char *); + const char *, + bool = false); extern char *sorted_attr_string (tree); extern bool common_function_versions (tree, tree); extern tree make_dispatcher_decl (const tree); extern bool is_function_default_version (const tree); +extern void handle_ignored_attributes_option (vec *); /* Return a type like TTYPE except that its TYPE_ATTRIBUTES is ATTRIBUTE. diff --git a/gcc/c-family/c-pragma.c b/gcc/c-family/c-pragma.c index a9be8df0384..3f7b8380d93 100644 --- a/gcc/c-family/c-pragma.c +++ b/gcc/c-family/c-pragma.c @@ -764,7 +764,7 @@ handle_pragma_diagnostic(cpp_reader *ARG_UNUSED(dummy)) if (token != CPP_NAME) { warning_at (loc, OPT_Wpragmas, - "missing [error|warning|ignored|push|pop]" + "missing [error|warning|ignored|push|pop|ignored_attributes]" " after %<#pragma GCC diagnostic%>"); return; } @@ -787,10 +787,28 @@ handle_pragma_diagnostic(cpp_reader *ARG_UNUSED(dummy)) diagnostic_pop_diagnostics (global_dc, input_location); return; } + else if (strcmp (kind_string, "ignored_attributes") == 0) + { + token = pragma_lex (&x, &loc); + if (token != CPP_STRING) + { + warning_at (loc, OPT_Wpragmas, + "missing attribute name after %<#pragma GCC diagnostic " + "ignored_attributes%>"); + return; + } + char *args = xstrdup (TREE_STRING_POINTER (x)); + auto_vec v; + for (char *p = strtok (args, ","); p; p = strtok (NULL, ",")) + v.safe_push (p); + handle_ignored_attributes_option (&v); + /* ??? We can't free (args); here. */ + return; + } else { warning_at (loc, OPT_Wpragmas, - "expected [error|warning|ignored|push|pop]" + "expected [error|warning|ignored|push|pop|ignored_attributes]" " after %<#pragma GCC diagnostic%>"); return; } diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c index 771efa3eadf..345c8f9d620 100644 --- a/gcc/c/c-decl.c +++ b/gcc/c/c-decl.c @@ -12295,6 +12295,8 @@ c_parse_final_cleanups (void) c_write_global_declarations_1 (BLOCK_VARS (DECL_INITIAL (t))); c_write_global_declarations_1 (BLOCK_VARS (ext_block)); + free_attr_data (); + if (!in_lto_p) free_attr_access_data (); diff --git a/gcc/common.opt b/gcc/common.opt index b921f5e3b25..0da1d714819 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -80,7 +80,7 @@ int flag_gen_aux_info = 0 Variable int flag_shlib -; These two are really VEC(char_p,heap) *. +; These three are really VEC(char_p,heap) *. Variable void *flag_instrument_functions_exclude_functions @@ -88,6 +88,9 @@ void *flag_instrument_functions_exclude_functions Variable void *flag_instrument_functions_exclude_files +Variable +void *flag_ignored_attributes + ; Generic structs (e.g. templates not explicitly specialized) ; may not have a compilation unit associated with them, and so ; may need to be treated differently from ordinary structs. @@ -546,6 +549,10 @@ Wattributes Common Var(warn_attributes) Init(1) Warning Warn about inappropriate attribute usage. +Wattributes= +Common Joined +Do not warn about specified attributes. + Wattribute-alias Common Alias(Wattribute_alias=, 1, 0) Warning Warn about type safety and similar errors and mismatches in declarations with alias attributes. diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c index a79a70ba9c2..58388c51dab 100644 --- a/gcc/cp/decl2.c +++ b/gcc/cp/decl2.c @@ -5305,6 +5305,8 @@ c_parse_final_cleanups (void) cp_tree_c_finish_parsing (); clear_consteval_vfns (consteval_vtables); + free_attr_data (); + /* The entire file is now complete. If requested, dump everything to a file. */ dump_tu (); diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 9501a60f20e..48eaf16d209 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -23745,6 +23745,25 @@ restored. foo(d); /* depends on command-line options */ @end smallexample +@item #pragma GCC diagnostic ignored_attributes + +Similarly to @option{-Wno-attributes=}, this pragma allows users to suppress +warnings about unknown scoped attributes (in C++11 and C2X). For example, +@code{#pragma GCC diagnostic ignored_attributes "vendor::attr"} disables +warning about the following declaration: + +@smallexample +[[vendor::attr]] void f(); +@end smallexample + +whereas @code{#pragma GCC diagnostic ignored_attributes "vendor::"} prevents +warning about both of these declarations: + +@smallexample +[[vendor::safe]] void f(); +[[vendor::unsafe]] void f2(); +@end smallexample + @end table GCC also offers a simple mechanism for printing messages during diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 4acb94181d2..7c7241cdb88 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -8621,6 +8621,24 @@ unrecognized attributes, function attributes applied to variables, etc. This does not stop errors for incorrect use of supported attributes. +Additionally, using @option{-Wno-attributes=}, it is possible to suppress +warnings about unknown scoped attributes (in C++11 and C2X). For example, +@option{-Wno-attributes=vendor::attr} disables warning about the following +declaration: + +@smallexample +[[vendor::attr]] void f(); +@end smallexample + +It is also possible to disable warning about all attributes in a namespace +using @option{-Wno-attributes=vendor::} which prevents warning about both +of these declarations: + +@smallexample +[[vendor::safe]] void f(); +[[vendor::unsafe]] void f2(); +@end smallexample + @item -Wno-builtin-declaration-mismatch @opindex Wno-builtin-declaration-mismatch @opindex Wbuiltin-declaration-mismatch diff --git a/gcc/opts.c b/gcc/opts.c index 1d2d22d7a3f..45db0de3f2e 100644 --- a/gcc/opts.c +++ b/gcc/opts.c @@ -2546,6 +2546,20 @@ common_handle_option (struct gcc_options *opts, /* Currently handled in a prescan. */ break; + case OPT_Wattributes_: + if (lang_mask == CL_DRIVER) + break; + + if (value) + { + warning_at (loc, 0, "arguments ignored for %<-Wattributes=%>; use " + "%<-Wno-attributes=%> instead"); + break; + } + + add_comma_separated_to_vector (&opts->x_flag_ignored_attributes, arg); + break; + case OPT_Werror: dc->warning_as_error_requested = value; break; diff --git a/gcc/plugin.h b/gcc/plugin.h index 1640e253ca5..5556763d1bf 100644 --- a/gcc/plugin.h +++ b/gcc/plugin.h @@ -197,7 +197,9 @@ invoke_plugin_callbacks (int event ATTRIBUTE_UNUSED, /* In attribs.c. */ extern void register_attribute (const struct attribute_spec *attr); +/* The default argument for the third parameter is given in attribs.h. */ extern struct scoped_attributes* register_scoped_attributes (const struct attribute_spec *, - const char *); + const char *, + bool); #endif /* PLUGIN_H */ diff --git a/gcc/testsuite/c-c++-common/Wno-attributes-1.c b/gcc/testsuite/c-c++-common/Wno-attributes-1.c new file mode 100644 index 00000000000..e28f1fbab17 --- /dev/null +++ b/gcc/testsuite/c-c++-common/Wno-attributes-1.c @@ -0,0 +1,40 @@ +/* PR c++/101940 */ +/* { dg-do compile } */ +/* { dg-additional-options "-std=c++11" { target c++ } } */ +/* { dg-additional-options "-Wno-attributes=company::,yoyodyne::attr" } */ +/* { dg-additional-options "-Wno-attributes=c1::attr,c1::attr,c1::__attr__" } */ +/* { dg-additional-options "-Wno-attributes=clang" } */ +/* { dg-additional-options "-Wno-attributes=c2::,c2::attr" } */ +/* { dg-additional-options "-Wno-attributes=c3::attr,c3::" } */ +/* { dg-additional-options "-Wno-attributes=x::," } */ +/* { dg-additional-options "-Wno-attributes=yoyodyne::attr_new" } */ +/* { dg-additional-options "-Wno-attributes=c4::__attr__" } */ + +[[company::attr]] void f1(); +[[company::attr2]] void f2(); + +[[yoyodyne::attr]] void f3(); +[[yoyodyne::__attr__]] void f3__(); +[[yoyodyne::attrx]] void f4(); /* { dg-warning "ignored" } */ +[[yoyodyne::__attrx__]] void f4__(); /* { dg-warning "ignored" } */ + +[[c1::attr]] void f5(); + +[[c2::attr]] void f6(); +[[c2::attrx]] void f7(); +[[c2::__attr__]] void f6__(); +[[c2::__attrx__]] void f7__(); + +[[c3::attr]] void f8(); +[[c3::attrx]] void f9(); + +[[x::x]] void f10(); + +[[yoyodyne::attr_new]] void f11(); +[[yoyodyne::__attr_new__]] void f11__(); +[[yoyodyne::attr_mew]] void f12(); /* { dg-warning "ignored" } */ +[[yoyodyne::__attr_mew__]] void f12__(); /* { dg-warning "ignored" } */ + +[[c4::attr]] void f13(); +[[c4::__attr__]] void f13__(); +[[c4::attrx]] void f14(); /* { dg-warning "ignored" } */ diff --git a/gcc/testsuite/c-c++-common/Wno-attributes-2.c b/gcc/testsuite/c-c++-common/Wno-attributes-2.c new file mode 100644 index 00000000000..1b08e972aed --- /dev/null +++ b/gcc/testsuite/c-c++-common/Wno-attributes-2.c @@ -0,0 +1,41 @@ +/* PR c++/101940 */ +/* { dg-do compile } */ +/* { dg-additional-options "-std=c++11" { target c++ } } */ + +#pragma GCC diagnostic ignored_attributes "company::,yoyodyne::attr" +#pragma GCC diagnostic ignored_attributes "c1::attr,c1::attr,c1::__attr__" +#pragma GCC diagnostic ignored_attributes "clang" +#pragma GCC diagnostic ignored_attributes "c2::,c2::attr" +#pragma GCC diagnostic ignored_attributes "c3::attr,c3::" +#pragma GCC diagnostic ignored_attributes "x::," +#pragma GCC diagnostic ignored_attributes "yoyodyne::attr_new" +#pragma GCC diagnostic ignored_attributes "c4::__attr__" + +[[company::attr]] void f1(); +[[company::attr2]] void f2(); + +[[yoyodyne::attr]] void f3(); +[[yoyodyne::__attr__]] void f3__(); +[[yoyodyne::attrx]] void f4(); /* { dg-warning "ignored" } */ +[[yoyodyne::__attrx__]] void f4__(); /* { dg-warning "ignored" } */ + +[[c1::attr]] void f5(); + +[[c2::attr]] void f6(); +[[c2::attrx]] void f7(); +[[c2::__attr__]] void f6__(); +[[c2::__attrx__]] void f7__(); + +[[c3::attr]] void f8(); +[[c3::attrx]] void f9(); + +[[x::x]] void f10(); + +[[yoyodyne::attr_new]] void f11(); +[[yoyodyne::__attr_new__]] void f11__(); +[[yoyodyne::attr_mew]] void f12(); /* { dg-warning "ignored" } */ +[[yoyodyne::__attr_mew__]] void f12__(); /* { dg-warning "ignored" } */ + +[[c4::attr]] void f13(); +[[c4::__attr__]] void f13__(); +[[c4::attrx]] void f14(); /* { dg-warning "ignored" } */