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Mon, 24 Jun 2024 18:09:45 -0400 X-MC-Unique: FwkOitPDOuq0PmvplxXe8w-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 24C8C195608C for ; Mon, 24 Jun 2024 22:09:44 +0000 (UTC) Received: from t14s.localdomain.com (unknown [10.22.16.8]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 08CD01956087; Mon, 24 Jun 2024 22:09:42 +0000 (UTC) From: David Malcolm To: gcc-patches@gcc.gnu.org Cc: David Malcolm Subject: [RFC/PATCH] diagnostics: UX: add doc URLs for attributes Date: Mon, 24 Jun 2024 18:09:40 -0400 Message-Id: <20240624220940.1353548-1-dmalcolm@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-10.4 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, RCVD_IN_SBL_CSS, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org In r14-5118-gc5db4d8ba5f3de I added a mechanism to automatically add documentation URLs to quoted strings in diagnostics. In r14-6920-g9e49746da303b8 I added a mechanism to generate URLs for mentions of command-line options in quoted strings in diagnostics. This patch does a similar thing for attributes. It adds a new Python 3 script to scrape the generated HTML looking for documentation of attributes, and uses this to (re)generate a new gcc/attr-urls.def file. Running "make regenerate-attr-urls" after rebuilding the HTML docs will regenerate gcc/attr-urls.def in the source directory. The patch uses this to optionally add doc URLs for attributes in any diagnostic emitted during the lifetime of a auto_urlify_attributes instance, and adds such instances everywhere that a diagnostic refers to a diagnostic within quotes (based on grepping the source tree for references to attributes in strings and in code). For example, given: $ ./xgcc -B. -S ../../src/gcc/testsuite/gcc.dg/attr-access-2.c ../../src/gcc/testsuite/gcc.dg/attr-access-2.c:14:16: warning: attribute ‘access(read_write, 2, 3)’ positional argument 2 conflicts with previous designation by argument 1 [-Wattributes] with this patch the quoted text `access(read_write, 2, 3)' automatically gains the URL for our docs for "access": https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-access-function-attribute in a sufficiently modern terminal. Two points I'm not sure about: - like r14-6920-g9e49746da303b8 this avoids the Makefile target depending on the generated HTML, since a missing URL is a minor problem, whereas requiring all users to build HTML docs seems more involved. Doing so also avoids Python 3 as a build requirement for everyone, but instead just for developers addding attributes. Like the options, we could add a CI test for this. Is this the right approach? - the patch currently gathers target-specific attributes, but doesn't select the appropriate one; it just picks the first one it sees. For example, the function attribute "interrupt" has 19 URLs within our docs: one common, and 18 target-specific ones. I'm not sure what the best approach here is; perhaps some kind of new target hook for identifying target-specific documentation? Thoughts? gcc/ChangeLog: * Makefile.in (ATTR_URLS_HTML_DEPS): New. (regenerate-attr-urls): New. (regenerate-attr-urls-unit-test): New. * attr-urls.def: New file. * attribs.cc: Include "gcc-urlifier.h". (decl_attributes): Use auto_urlify_attributes. * diagnostic.cc (diagnostic_context::override_urlifier): New. * diagnostic.h (diagnostic_context::override_urlifier): New decl. (diagnostic_context::get_urlifier): New accessor. * gcc-urlifier.cc: Include "diagnostic.h" and "attr-urls.def". (gcc_urlifier::make_doc): Convert to... (make_doc_url): ...this. (auto_override_urlifier::auto_override_urlifier): New. (auto_override_urlifier::~auto_override_urlifier): New. (struct attr_url_entry): New. (find_attr_url_entry): New. (attribute_urlifier::get_url_for_quoted_text): New. (attribute_urlifier::get_url_suffix_for_quoted_text): New. (selftest::gcc_urlifier_cc_tests): Split out body into... (selftest::test_gcc_urlifier): ...this, and also call... (selftest::test_attribute_urlifier): ...this new function. * gcc-urlifier.h: Include "pretty-print-urlifier.h" and "label-text.h". (class auto_override_urlifier): New. (class attribute_urlifier): New. (class auto_urlify_attributes): New. * gimple-ssa-warn-access.cc: Include "gcc-urlifier.h". (pass_waccess::execute): Use auto_urlify_attributes. * gimplify.cc: Include "gcc-urlifier.h". (expand_FALLTHROUGH): Use auto_urlify_attributes. * internal-fn.cc: Include "gcc-urlifier.h. (expand_FALLTHROUGH): Use auto_urlify_attributes. * ipa-pure-const.cc: Include "gcc-urlifier.h. (suggest_attribute): Use auto_urlify_attributes. * ipa-strub.cc: Include "gcc-urlifier.h. (can_strub_p): Use auto_urlify_attributes. * regenerate-attr-urls.py: New file. * tree-cfg.cc: Include "gcc-urlifier.h. (do_warn_unused_result): Use auto_urlify_attributes. * tree-ssa-uninit.cc: Include "gcc-urlifier.h. (maybe_warn_read_write_only): Use auto_urlify_attributes. (maybe_warn_pass_by_reference): Likewise. gcc/analyzer/ChangeLog: * region-model.cc: Include "gcc-urlifier.h". (reason_attr_access::emit): Use auto_urlify_attributes. * sm-taint.cc: Include "gcc-urlifier.h". (tainted_access_attrib_size::emit): Use auto_urlify_attributes. gcc/c-family/ChangeLog: * c-attribs.cc: Include "gcc-urlifier.h". (positional_argument): Use auto_urlify_attributes. * c-common.cc: Include "gcc-urlifier.h". (parse_optimize_options): Use auto_urlify_attributes with OPT_Wattributes. (attribute_fallthrough_p): Use auto_urlify_attributes. * c-warn.cc: Include "gcc-urlifier.h". (diagnose_mismatched_attributes): Use auto_urlify_attributes. gcc/c/ChangeLog: * c-decl.cc: Include "gcc-urlifier.h". (start_decl): Use auto_urlify_attributes with OPT_Wattributes. (start_function): Likewise. * c-parser.cc: Include "gcc-urlifier.h". (c_parser_statement_after_labels): Use auto_urlify_attributes with OPT_Wattributes. * c-typeck.cc: Include "gcc-urlifier.h". (maybe_warn_nodiscard): Use auto_urlify_attributes with OPT_Wunused_result. gcc/cp/ChangeLog: * cp-gimplify.cc: Include "gcc-urlifier.h". (process_stmt_hotness_attribute): Use auto_urlify_attributes with OPT_Wattributes. * cvt.cc: Include "gcc-urlifier.h". (maybe_warn_nodiscard): Use auto_urlify_attributes with OPT_Wunused_result. * decl.cc: Include "gcc-urlifier.h". (start_decl): Use auto_urlify_attributes. (start_preparsed_function): Likewise. Signed-off-by: David Malcolm --- gcc/Makefile.in | 12 ++ gcc/analyzer/region-model.cc | 2 + gcc/analyzer/sm-taint.cc | 2 + gcc/attr-urls.def | 372 ++++++++++++++++++++++++++++++++++ gcc/attribs.cc | 3 + gcc/c-family/c-attribs.cc | 3 + gcc/c-family/c-common.cc | 18 +- gcc/c-family/c-warn.cc | 2 + gcc/c/c-decl.cc | 17 +- gcc/c/c-parser.cc | 20 +- gcc/c/c-typeck.cc | 3 + gcc/cp/cp-gimplify.cc | 8 +- gcc/cp/cvt.cc | 4 + gcc/cp/decl.cc | 15 +- gcc/diagnostic.cc | 8 + gcc/diagnostic.h | 3 + gcc/gcc-urlifier.cc | 182 +++++++++++++++-- gcc/gcc-urlifier.h | 50 +++++ gcc/gimple-ssa-warn-access.cc | 3 + gcc/gimplify.cc | 3 + gcc/internal-fn.cc | 2 + gcc/ipa-pure-const.cc | 2 + gcc/ipa-strub.cc | 3 + gcc/regenerate-attr-urls.py | 209 +++++++++++++++++++ gcc/tree-cfg.cc | 3 + gcc/tree-ssa-uninit.cc | 3 + 26 files changed, 914 insertions(+), 38 deletions(-) create mode 100644 gcc/attr-urls.def create mode 100755 gcc/regenerate-attr-urls.py diff --git a/gcc/Makefile.in b/gcc/Makefile.in index 9eacb21bf543..f864539450f2 100644 --- a/gcc/Makefile.in +++ b/gcc/Makefile.in @@ -3655,6 +3655,18 @@ regenerate-opt-urls: $(srcdir)/regenerate-opt-urls.py $(OPT_URLS_HTML_DEPS) regenerate-opt-urls-unit-test: $(OPT_URLS_HTML_DEPS) $(srcdir)/regenerate-opt-urls.py $(build_htmldir) $(shell dirname $(srcdir)) --unit-test +# Regenerate attr-urls.def from the generated html. +.PHONY: regenerate-attr-urls +ATTR_URLS_HTML_DEPS = $(build_htmldir)/gcc/Concept-and-Symbol-Index.html + +regenerate-attr-urls: $(srcdir)/regenerate-attr-urls.py $(ATTR_URLS_HTML_DEPS) + $(srcdir)/regenerate-attr-urls.py $(build_htmldir) $(shell dirname $(srcdir)) + +# Run the unit tests for regenerate-attr-urls.py +.PHONY: regenerate-attr-urls-unit-test +regenerate-attr-urls-unit-test: $(ATTR_URLS_HTML_DEPS) + $(srcdir)/regenerate-attr-urls.py $(build_htmldir) $(shell dirname $(srcdir)) --unit-test + MANFILES = doc/gcov.1 doc/cpp.1 doc/gcc.1 doc/gfdl.7 doc/gpl.7 \ doc/fsf-funding.7 doc/gcov-tool.1 doc/gcov-dump.1 \ $(if $(filter yes,@enable_lto@),doc/lto-dump.1) diff --git a/gcc/analyzer/region-model.cc b/gcc/analyzer/region-model.cc index 4d6e16cf0f4d..72ad702219ea 100644 --- a/gcc/analyzer/region-model.cc +++ b/gcc/analyzer/region-model.cc @@ -82,6 +82,7 @@ along with GCC; see the file COPYING3. If not see #include "analyzer/record-layout.h" #include "diagnostic-format-sarif.h" #include "text-art/tree-widget.h" +#include "gcc-urlifier.h" #if ENABLE_ANALYZER @@ -2037,6 +2038,7 @@ public: void emit () const final override { + auto_urlify_attributes sentinel; inform (DECL_SOURCE_LOCATION (m_callee_fndecl), "parameter %i of %qD marked with attribute %qs", m_ptr_argno + 1, m_callee_fndecl, m_access_str); diff --git a/gcc/analyzer/sm-taint.cc b/gcc/analyzer/sm-taint.cc index 3bd050f96352..87fa3769156e 100644 --- a/gcc/analyzer/sm-taint.cc +++ b/gcc/analyzer/sm-taint.cc @@ -52,6 +52,7 @@ along with GCC; see the file COPYING3. If not see #include "analyzer/pending-diagnostic.h" #include "analyzer/constraint-manager.h" #include "diagnostic-format-sarif.h" +#include "gcc-urlifier.h" #if ENABLE_ANALYZER @@ -581,6 +582,7 @@ public: bool warned = tainted_size::emit (ctxt); if (warned) { + auto_urlify_attributes sentinel; inform (DECL_SOURCE_LOCATION (m_callee_fndecl), "parameter %i of %qD marked as a size via attribute %qs", m_size_argno + 1, m_callee_fndecl, m_access_str); diff --git a/gcc/attr-urls.def b/gcc/attr-urls.def new file mode 100644 index 000000000000..fcb2ee0719d0 --- /dev/null +++ b/gcc/attr-urls.def @@ -0,0 +1,372 @@ +/* Autogenerated by regenerate-attr-urls.py. */ + +const attr_url_entry enumerator_attrs[] = { + { "deprecated", "gcc/Enumerator-Attributes.html#index-deprecated-enumerator-attribute", "", 10}, + { "unavailable", "gcc/Enumerator-Attributes.html#index-unavailable-enumerator-attribute", "", 11}, +}; + +const attr_url_entry function_attrs[] = { + { "OS_main", "gcc/AVR-Function-Attributes.html#index-OS_005fmain-function-attribute_002c-AVR", "AVR", 7}, + { "OS_task", "gcc/AVR-Function-Attributes.html#index-OS_005ftask-function-attribute_002c-AVR", "AVR", 7}, + { "abi_tag", "gcc/C_002b_002b-Attributes.html#index-abi_005ftag-function-attribute", "", 7}, + { "access", "gcc/Common-Function-Attributes.html#index-access-function-attribute", "", 6}, + { "alias", "gcc/Common-Function-Attributes.html#index-alias-function-attribute", "", 5}, + { "aligned", "gcc/Common-Function-Attributes.html#index-aligned-function-attribute", "", 7}, + { "alloc_align", "gcc/Common-Function-Attributes.html#index-alloc_005falign-function-attribute", "", 11}, + { "alloc_size", "gcc/Common-Function-Attributes.html#index-alloc_005fsize-function-attribute", "", 10}, + { "always_inline", "gcc/Common-Function-Attributes.html#index-always_005finline-function-attribute", "", 13}, + { "amdgpu_hsa_kernel", "gcc/AMD-GCN-Function-Attributes.html#index-amdgpu_005fhsa_005fkernel-function-attribute_002c-AMD-GCN", "AMD GCN", 17}, + { "arch=", "gcc/AArch64-Function-Attributes.html#index-arch_003d-function-attribute_002c-AArch64", "AArch64", 5}, + { "arch=", "gcc/ARM-Function-Attributes.html#index-arch_003d-function-attribute_002c-ARM", "ARM", 5}, + { "arch=", "gcc/RISC-V-Function-Attributes.html#index-arch_003d-function-attribute_002c-RISC-V", "RISC-V", 5}, + { "artificial", "gcc/Common-Function-Attributes.html#index-artificial-function-attribute", "", 10}, + { "assume_aligned", "gcc/Common-Function-Attributes.html#index-assume_005faligned-function-attribute", "", 14}, + { "bank_switch", "gcc/M32C-Function-Attributes.html#index-bank_005fswitch-function-attribute_002c-M32C", "M32C", 11}, + { "branch-protection", "gcc/AArch64-Function-Attributes.html#index-branch-protection-function-attribute_002c-AArch64", "AArch64", 17}, + { "break_handler", "gcc/MicroBlaze-Function-Attributes.html#index-break_005fhandler-function-attribute_002c-MicroBlaze", "MicroBlaze", 13}, + { "brk_interrupt", "gcc/RL78-Function-Attributes.html#index-brk_005finterrupt-function-attribute_002c-RL78", "RL78", 13}, + { "callee_pop_aggregate_return", "gcc/x86-Function-Attributes.html#index-callee_005fpop_005faggregate_005freturn-function-attribute_002c-x86", "x86", 27}, + { "cdecl", "gcc/x86-Function-Attributes.html#index-cdecl-function-attribute_002c-x86-32", "x86-32", 5}, + { "cf_check", "gcc/x86-Function-Attributes.html#index-cf_005fcheck-function-attribute_002c-x86", "x86", 8}, + { "cmodel=", "gcc/AArch64-Function-Attributes.html#index-cmodel_003d-function-attribute_002c-AArch64", "AArch64", 7}, + { "code_readable", "gcc/MIPS-Function-Attributes.html#index-code_005freadable-function-attribute_002c-MIPS", "MIPS", 13}, + { "cold", "gcc/Common-Function-Attributes.html#index-cold-function-attribute", "", 4}, + { "const", "gcc/Common-Function-Attributes.html#index-const-function-attribute", "", 5}, + { "constructor", "gcc/Common-Function-Attributes.html#index-constructor-function-attribute", "", 11}, + { "copy", "gcc/Common-Function-Attributes.html#index-copy-function-attribute", "", 4}, + { "cpu=", "gcc/AArch64-Function-Attributes.html#index-cpu_003d-function-attribute_002c-AArch64", "AArch64", 4}, + { "cpu=", "gcc/RISC-V-Function-Attributes.html#index-cpu_003d-function-attribute_002c-RISC-V", "RISC-V", 4}, + { "critical", "gcc/MSP430-Function-Attributes.html#index-critical-function-attribute_002c-MSP430", "MSP430", 8}, + { "deprecated", "gcc/Common-Function-Attributes.html#index-deprecated-function-attribute", "", 10}, + { "destructor", "gcc/Common-Function-Attributes.html#index-destructor-function-attribute", "", 10}, + { "disinterrupt", "gcc/Epiphany-Function-Attributes.html#index-disinterrupt-function-attribute_002c-Epiphany", "Epiphany", 12}, + { "dllexport", "gcc/Microsoft-Windows-Function-Attributes.html#index-dllexport-function-attribute", "", 9}, + { "dllimport", "gcc/Microsoft-Windows-Function-Attributes.html#index-dllimport-function-attribute", "", 9}, + { "either", "gcc/MSP430-Function-Attributes.html#index-either-function-attribute_002c-MSP430", "MSP430", 6}, + { "error", "gcc/Common-Function-Attributes.html#index-error-function-attribute", "", 5}, + { "exception", "gcc/NDS32-Function-Attributes.html#index-exception-function-attribute", "", 9}, + { "exception_handler", "gcc/Blackfin-Function-Attributes.html#index-exception_005fhandler-function-attribute", "", 17}, + { "expected_throw", "gcc/Common-Function-Attributes.html#index-expected_005fthrow-function-attribute", "", 14}, + { "externally_visible", "gcc/Common-Function-Attributes.html#index-externally_005fvisible-function-attribute", "", 18}, + { "far", "gcc/MIPS-Function-Attributes.html#index-far-function-attribute_002c-MIPS", "MIPS", 3}, + { "fast_interrupt", "gcc/M32C-Function-Attributes.html#index-fast_005finterrupt-function-attribute_002c-M32C", "M32C", 14}, + { "fast_interrupt", "gcc/MicroBlaze-Function-Attributes.html#index-fast_005finterrupt-function-attribute_002c-MicroBlaze", "MicroBlaze", 14}, + { "fast_interrupt", "gcc/RX-Function-Attributes.html#index-fast_005finterrupt-function-attribute_002c-RX", "RX", 14}, + { "fastcall", "gcc/x86-Function-Attributes.html#index-fastcall-function-attribute_002c-x86-32", "x86-32", 8}, + { "fd_arg", "gcc/Common-Function-Attributes.html#index-fd_005farg-function-attribute", "", 6}, + { "fd_arg_read", "gcc/Common-Function-Attributes.html#index-fd_005farg_005fread-function-attribute", "", 11}, + { "fd_arg_write", "gcc/Common-Function-Attributes.html#index-fd_005farg_005fwrite-function-attribute", "", 12}, + { "fentry_name", "gcc/x86-Function-Attributes.html#index-fentry_005fname-function-attribute_002c-x86", "x86", 11}, + { "fentry_section", "gcc/x86-Function-Attributes.html#index-fentry_005fsection-function-attribute_002c-x86", "x86", 14}, + { "fix-cortex-a53-835769", "gcc/AArch64-Function-Attributes.html#index-fix-cortex-a53-835769-function-attribute_002c-AArch64", "AArch64", 21}, + { "flatten", "gcc/Common-Function-Attributes.html#index-flatten-function-attribute", "", 7}, + { "force_align_arg_pointer", "gcc/x86-Function-Attributes.html#index-force_005falign_005farg_005fpointer-function-attribute_002c-x86", "x86", 23}, + { "format", "gcc/Common-Function-Attributes.html#index-format-function-attribute", "", 6}, + { "format_arg", "gcc/Common-Function-Attributes.html#index-format_005farg-function-attribute", "", 10}, + { "forwarder_section", "gcc/Epiphany-Function-Attributes.html#index-forwarder_005fsection-function-attribute_002c-Epiphany", "Epiphany", 17}, + { "function_return", "gcc/x86-Function-Attributes.html#index-function_005freturn-function-attribute_002c-x86", "x86", 15}, + { "function_vector", 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"gcc/MIPS-Function-Attributes.html#index-use_005fhazard_005fbarrier_005freturn-function-attribute_002c-MIPS", "MIPS", 25}, + { "use_shadow_register_set", "gcc/MIPS-Function-Attributes.html#index-use_005fshadow_005fregister_005fset-function-attribute_002c-MIPS", "MIPS", 23}, + { "used", "gcc/Common-Function-Attributes.html#index-used-function-attribute", "", 4}, + { "vector", "gcc/RX-Function-Attributes.html#index-vector-function-attribute_002c-RX", "RX", 6}, + { "version_id", "gcc/IA-64-Function-Attributes.html#index-version_005fid-function-attribute_002c-IA-64", "IA-64", 10}, + { "visibility", "gcc/Common-Function-Attributes.html#index-visibility-function-attribute", "", 10}, + { "wakeup", "gcc/MSP430-Function-Attributes.html#index-wakeup-function-attribute_002c-MSP430", "MSP430", 6}, + { "warm", "gcc/NDS32-Function-Attributes.html#index-warm-function-attribute_002c-NDS32", "NDS32", 4}, + { "warn_unused_result", "gcc/Common-Function-Attributes.html#index-warn_005funused_005fresult-function-attribute", "", 18}, + { "warning", "gcc/Common-Function-Attributes.html#index-warning-function-attribute", "", 7}, + { "weak", "gcc/Common-Function-Attributes.html#index-weak-function-attribute", "", 4}, + { "weakref", "gcc/Common-Function-Attributes.html#index-weakref-function-attribute", "", 7}, + { "zero_call_used_regs", "gcc/Common-Function-Attributes.html#index-zero_005fcall_005fused_005fregs-function-attribute", "", 19}, +}; + +const attr_url_entry label_attrs[] = { + { "cold", "gcc/Label-Attributes.html#index-cold-label-attribute", "", 4}, + { "hot", "gcc/Label-Attributes.html#index-hot-label-attribute", "", 3}, + { "unused", "gcc/Label-Attributes.html#index-unused-label-attribute", "", 6}, +}; + +const attr_url_entry statement_attrs[] = { + { "assume", "gcc/Statement-Attributes.html#index-assume-statement-attribute", "", 6}, + { "fallthrough", "gcc/Statement-Attributes.html#index-fallthrough-statement-attribute", "", 11}, +}; + +const attr_url_entry type_attrs[] = { + { "abi_tag", "gcc/C_002b_002b-Attributes.html#index-abi_005ftag-type-attribute", "", 7}, + { "aligned", "gcc/Common-Type-Attributes.html#index-aligned-type-attribute", "", 7}, + { "alloc_size", "gcc/Common-Type-Attributes.html#index-alloc_005fsize-type-attribute", "", 10}, + { "altivec", "gcc/PowerPC-Type-Attributes.html#index-altivec-type-attribute_002c-PowerPC", "PowerPC", 7}, + { "cold", "gcc/C_002b_002b-Attributes.html#index-cold-type-attribute", "", 4}, + { "copy", "gcc/Common-Type-Attributes.html#index-copy-type-attribute", "", 4}, + { "deprecated", "gcc/Common-Type-Attributes.html#index-deprecated-type-attribute", "", 10}, + { "designated_init", "gcc/Common-Type-Attributes.html#index-designated_005finit-type-attribute", "", 15}, + { "gcc_struct", "gcc/PowerPC-Type-Attributes.html#index-gcc_005fstruct-type-attribute_002c-PowerPC", "PowerPC", 10}, + { "gcc_struct", "gcc/x86-Type-Attributes.html#index-gcc_005fstruct-type-attribute_002c-x86", "x86", 10}, + { "hardbool", "gcc/Common-Type-Attributes.html#index-hardbool-type-attribute", "", 8}, + { "hot", "gcc/C_002b_002b-Attributes.html#index-hot-type-attribute", "", 3}, + { "may_alias", "gcc/Common-Type-Attributes.html#index-may_005falias-type-attribute", "", 9}, + { "mode", "gcc/Common-Type-Attributes.html#index-mode-type-attribute", "", 4}, + { "ms_struct", "gcc/PowerPC-Type-Attributes.html#index-ms_005fstruct-type-attribute_002c-PowerPC", "PowerPC", 9}, + { "ms_struct", "gcc/x86-Type-Attributes.html#index-ms_005fstruct-type-attribute_002c-x86", "x86", 9}, + { "no_dangling", "gcc/C_002b_002b-Attributes.html#index-no_005fdangling-type-attribute", "", 11}, + { "notshared", "gcc/ARM-Type-Attributes.html#index-notshared-type-attribute_002c-ARM", "ARM", 9}, + { "objc_root_class", "gcc/Common-Type-Attributes.html#index-objc_005froot_005fclass-type-attribute", "", 15}, + { "packed", "gcc/Common-Type-Attributes.html#index-packed-type-attribute", "", 6}, + { "preserve_access_index", "gcc/BPF-Type-Attributes.html#index-preserve_005faccess_005findex-type-attribute_002c-BPF", "BPF", 21}, + { "scalar_storage_order", "gcc/Common-Type-Attributes.html#index-scalar_005fstorage_005forder-type-attribute", "", 20}, + { "strub", "gcc/Common-Type-Attributes.html#index-strub-type-attribute", "", 5}, + { "transparent_union", "gcc/Common-Type-Attributes.html#index-transparent_005funion-type-attribute", "", 17}, + { "unavailable", "gcc/Common-Type-Attributes.html#index-unavailable-type-attribute", "", 11}, + { "uncached", "gcc/ARC-Type-Attributes.html#index-uncached-type-attribute_002c-ARC", "ARC", 8}, + { "unused", "gcc/Common-Type-Attributes.html#index-unused-type-attribute", "", 6}, + { "vector_size", "gcc/Common-Type-Attributes.html#index-vector_005fsize-type-attribute", "", 11}, + { "visibility", "gcc/Common-Type-Attributes.html#index-visibility-type-attribute", "", 10}, + { "warn_if_not_aligned", "gcc/Common-Type-Attributes.html#index-warn_005fif_005fnot_005faligned-type-attribute", "", 19}, + { "warn_unused", "gcc/C_002b_002b-Attributes.html#index-warn_005funused-type-attribute", "", 11}, +}; + +const attr_url_entry variable_attrs[] = { + { "abi_tag", "gcc/C_002b_002b-Attributes.html#index-abi_005ftag-variable-attribute", "", 7}, + { "absdata", "gcc/AVR-Variable-Attributes.html#index-absdata-variable-attribute_002c-AVR", "AVR", 7}, + { "address", "gcc/AVR-Variable-Attributes.html#index-address-variable-attribute_002c-AVR", "AVR", 7}, + { "alias", "gcc/Common-Variable-Attributes.html#index-alias-variable-attribute", "", 5}, + { "aligned", "gcc/Common-Variable-Attributes.html#index-aligned-variable-attribute", "", 7}, + { "alloc_size", "gcc/Common-Variable-Attributes.html#index-alloc_005fsize-variable-attribute", "", 10}, + { "altivec", "gcc/PowerPC-Variable-Attributes.html#index-altivec-variable-attribute_002c-PowerPC", "PowerPC", 7}, + { "aux", "gcc/ARC-Variable-Attributes.html#index-aux-variable-attribute_002c-ARC", "ARC", 3}, + { "below100", "gcc/Xstormy16-Variable-Attributes.html#index-below100-variable-attribute_002c-Xstormy16", "Xstormy16", 8}, + { "cleanup", "gcc/Common-Variable-Attributes.html#index-cleanup-variable-attribute", "", 7}, + { "common", "gcc/Common-Variable-Attributes.html#index-common-variable-attribute", "", 6}, + { "copy", "gcc/Common-Variable-Attributes.html#index-copy-variable-attribute", "", 4}, + { "counted_by", "gcc/Common-Variable-Attributes.html#index-counted_005fby-variable-attribute", "", 10}, + { "deprecated", "gcc/Common-Variable-Attributes.html#index-deprecated-variable-attribute", "", 10}, + { "dllexport", "gcc/Microsoft-Windows-Variable-Attributes.html#index-dllexport-variable-attribute", "", 9}, + { "dllimport", "gcc/Microsoft-Windows-Variable-Attributes.html#index-dllimport-variable-attribute", "", 9}, + { "eightbit_data", "gcc/H8_002f300-Variable-Attributes.html#index-eightbit_005fdata-variable-attribute_002c-H8_002f300", "H8/300", 13}, + { "either", "gcc/MSP430-Variable-Attributes.html#index-either-variable-attribute_002c-MSP430", "MSP430", 6}, + { "gcc_struct", "gcc/PowerPC-Variable-Attributes.html#index-gcc_005fstruct-variable-attribute_002c-PowerPC", "PowerPC", 10}, + { "gcc_struct", "gcc/x86-Variable-Attributes.html#index-gcc_005fstruct-variable-attribute_002c-x86", "x86", 10}, + { "init_priority", "gcc/C_002b_002b-Attributes.html#index-init_005fpriority-variable-attribute", "", 13}, + { "io", "gcc/AVR-Variable-Attributes.html#index-io-variable-attribute_002c-AVR", "AVR", 2}, + { "io_low", "gcc/AVR-Variable-Attributes.html#index-io_005flow-variable-attribute_002c-AVR", "AVR", 6}, + { "l1_data", "gcc/Blackfin-Variable-Attributes.html#index-l1_005fdata-variable-attribute_002c-Blackfin", "Blackfin", 7}, + { "l1_data_A", "gcc/Blackfin-Variable-Attributes.html#index-l1_005fdata_005fA-variable-attribute_002c-Blackfin", "Blackfin", 9}, + { "l1_data_B", "gcc/Blackfin-Variable-Attributes.html#index-l1_005fdata_005fB-variable-attribute_002c-Blackfin", "Blackfin", 9}, + { "l2", "gcc/Blackfin-Variable-Attributes.html#index-l2-variable-attribute_002c-Blackfin", "Blackfin", 2}, + { "lower", "gcc/MSP430-Variable-Attributes.html#index-lower-variable-attribute_002c-MSP430", "MSP430", 5}, + { "mode", "gcc/Common-Variable-Attributes.html#index-mode-variable-attribute", "", 4}, + { "model", "gcc/IA-64-Variable-Attributes.html#index-model-variable-attribute_002c-IA-64", "IA-64", 5}, + { "model", "gcc/LoongArch-Variable-Attributes.html#index-model-variable-attribute_002c-LoongArch", "LoongArch", 5}, + { "model-name", "gcc/M32R_002fD-Variable-Attributes.html#index-model-name-variable-attribute_002c-M32R_002fD", "M32R/D", 10}, + { "ms_struct", "gcc/PowerPC-Variable-Attributes.html#index-ms_005fstruct-variable-attribute_002c-PowerPC", "PowerPC", 9}, + { "ms_struct", "gcc/x86-Variable-Attributes.html#index-ms_005fstruct-variable-attribute_002c-x86", "x86", 9}, + { "no_icf", "gcc/Common-Variable-Attributes.html#index-no_005ficf-variable-attribute", "", 6}, + { "nocommon", "gcc/Common-Variable-Attributes.html#index-nocommon-variable-attribute", "", 8}, + { "noinit", "gcc/Common-Variable-Attributes.html#index-noinit-variable-attribute", "", 6}, + { "nonstring", "gcc/Common-Variable-Attributes.html#index-nonstring-variable-attribute", "", 9}, + { "objc_nullability", "gcc/Common-Variable-Attributes.html#index-objc_005fnullability-variable-attribute", "", 16}, + { "packed", "gcc/Common-Variable-Attributes.html#index-packed-variable-attribute", "", 6}, + { "persistent", "gcc/Common-Variable-Attributes.html#index-persistent-variable-attribute", "", 10}, + { "progmem", "gcc/AVR-Variable-Attributes.html#index-progmem-variable-attribute_002c-AVR", "AVR", 7}, + { "retain", "gcc/Common-Variable-Attributes.html#index-retain-variable-attribute", "", 6}, + { "saddr", "gcc/RL78-Variable-Attributes.html#index-saddr-variable-attribute_002c-RL78", "RL78", 5}, + { "sda", "gcc/V850-Variable-Attributes.html#index-sda-variable-attribute_002c-V850", "V850", 3}, + { "section", "gcc/Common-Variable-Attributes.html#index-section-variable-attribute", "", 7}, + { "selectany", "gcc/Microsoft-Windows-Variable-Attributes.html#index-selectany-variable-attribute", "", 9}, + { "shared", "gcc/Microsoft-Windows-Variable-Attributes.html#index-shared-variable-attribute", "", 6}, + { "strict_flex_array", "gcc/Common-Variable-Attributes.html#index-strict_005fflex_005farray-variable-attribute", "", 17}, + { "tda", "gcc/V850-Variable-Attributes.html#index-tda-variable-attribute_002c-V850", "V850", 3}, + { "tiny_data", "gcc/H8_002f300-Variable-Attributes.html#index-tiny_005fdata-variable-attribute_002c-H8_002f300", "H8/300", 9}, + { "tls_model", "gcc/Common-Variable-Attributes.html#index-tls_005fmodel-variable-attribute", "", 9}, + { "unavailable", "gcc/Common-Variable-Attributes.html#index-unavailable-variable-attribute", "", 11}, + { "uninitialized", "gcc/Common-Variable-Attributes.html#index-uninitialized-variable-attribute", "", 13}, + { "unused", "gcc/Common-Variable-Attributes.html#index-unused-variable-attribute", "", 6}, + { "upper", "gcc/MSP430-Variable-Attributes.html#index-upper-variable-attribute_002c-MSP430", "MSP430", 5}, + { "used", "gcc/Common-Variable-Attributes.html#index-used-variable-attribute", "", 4}, + { "vector_size", "gcc/Common-Variable-Attributes.html#index-vector_005fsize-variable-attribute", "", 11}, + { "visibility", "gcc/Common-Variable-Attributes.html#index-visibility-variable-attribute", "", 10}, + { "warn_if_not_aligned", "gcc/Common-Variable-Attributes.html#index-warn_005fif_005fnot_005faligned-variable-attribute", "", 19}, + { "weak", "gcc/Common-Variable-Attributes.html#index-weak-variable-attribute", "", 4}, + { "zda", "gcc/V850-Variable-Attributes.html#index-zda-variable-attribute_002c-V850", "V850", 3}, +}; + +static const struct attr_url_table { + const attr_url_entry *m_table; + const size_t m_table_sz; +} attr_url_tables[] = { + { enumerator_attrs, ARRAY_SIZE (enumerator_attrs) }, + { function_attrs, ARRAY_SIZE (function_attrs) }, + { label_attrs, ARRAY_SIZE (label_attrs) }, + { statement_attrs, ARRAY_SIZE (statement_attrs) }, + { type_attrs, ARRAY_SIZE (type_attrs) }, + { variable_attrs, ARRAY_SIZE (variable_attrs) }, +}; diff --git a/gcc/attribs.cc b/gcc/attribs.cc index 3ab0b0fd87a4..5ef6884f4163 100644 --- a/gcc/attribs.cc +++ b/gcc/attribs.cc @@ -37,6 +37,7 @@ along with GCC; see the file COPYING3. If not see #include "pretty-print.h" #include "tree-pretty-print.h" #include "intl.h" +#include "gcc-urlifier.h" /* Table of the tables of attributes (common, language, format, machine) searched. */ @@ -630,6 +631,8 @@ decl_attributes (tree *node, tree attributes, int flags, if (!attributes_initialized) init_attributes (); + auto_urlify_attributes sentinel; + /* If this is a function and the user used #pragma GCC optimize, add the options to the attribute((optimize(...))) list. */ if (TREE_CODE (*node) == FUNCTION_DECL && current_optimize_pragma) diff --git a/gcc/c-family/c-attribs.cc b/gcc/c-family/c-attribs.cc index f9b229aba7fc..390eebfbd05f 100644 --- a/gcc/c-family/c-attribs.cc +++ b/gcc/c-family/c-attribs.cc @@ -48,6 +48,7 @@ along with GCC; see the file COPYING3. If not see #include "gimplify.h" #include "tree-pretty-print.h" #include "gcc-rich-location.h" +#include "gcc-urlifier.h" static tree handle_packed_attribute (tree *, tree, tree, int, bool *); static tree handle_nocommon_attribute (tree *, tree, tree, int, bool *); @@ -686,6 +687,8 @@ positional_argument (const_tree fn, const_tree atname, tree &pos, tree_code code, int argno /* = 0 */, int flags /* = posargflags () */) { + auto_urlify_attributes sentinel; + const_tree fndecl = TYPE_P (fn) ? NULL_TREE : fn; const_tree fntype = TYPE_P (fn) ? fn : TREE_TYPE (fn); if (pos && TREE_CODE (pos) != IDENTIFIER_NODE diff --git a/gcc/c-family/c-common.cc b/gcc/c-family/c-common.cc index 7d752acd430c..959982cf0194 100644 --- a/gcc/c-family/c-common.cc +++ b/gcc/c-family/c-common.cc @@ -53,6 +53,7 @@ along with GCC; see the file COPYING3. If not see #include "debug.h" #include "tree-vector-builder.h" #include "vec-perm-indices.h" +#include "gcc-urlifier.h" cpp_reader *parse_in; /* Declared in c-pragma.h. */ @@ -6022,8 +6023,11 @@ parse_optimize_options (tree args, bool attr_p) { ret = false; if (attr_p) - warning (OPT_Wattributes, - "bad option %qs to attribute %", p); + { + auto_urlify_attributes sentinel; + warning (OPT_Wattributes, + "bad option %qs to attribute %", p); + } else warning (OPT_Wpragmas, "bad option %qs to pragma %", p); @@ -6072,9 +6076,12 @@ parse_optimize_options (tree args, bool attr_p) { ret = false; if (attr_p) - warning (OPT_Wattributes, - "bad option %qs to attribute %", - decoded_options[i].orig_option_with_args_text); + { + auto_urlify_attributes sentinel; + warning (OPT_Wattributes, + "bad option %qs to attribute %", + decoded_options[i].orig_option_with_args_text); + } else warning (OPT_Wpragmas, "bad option %qs to pragma %", @@ -6122,6 +6129,7 @@ attribute_fallthrough_p (tree attr) tree t = lookup_attribute ("", "fallthrough", attr); if (t == NULL_TREE) return false; + auto_urlify_attributes sentinel; /* It is no longer true that "this attribute shall appear at most once in each attribute-list", but we still give a warning. */ if (lookup_attribute ("", "fallthrough", TREE_CHAIN (t))) diff --git a/gcc/c-family/c-warn.cc b/gcc/c-family/c-warn.cc index 5e4fb7f0f0a9..c40388bfb086 100644 --- a/gcc/c-family/c-warn.cc +++ b/gcc/c-family/c-warn.cc @@ -40,6 +40,7 @@ along with GCC; see the file COPYING3. If not see #include "stor-layout.h" #include "tree-pretty-print.h" #include "langhooks.h" +#include "gcc-urlifier.h" /* Print a warning if a constant expression had overflow in folding. Invoke this function on every expression that the language @@ -2668,6 +2669,7 @@ warn_duplicated_cond_add_or_warn (location_t loc, tree cond, vec **chain) bool diagnose_mismatched_attributes (tree olddecl, tree newdecl) { + auto_urlify_attributes sentinel; bool warned = false; tree a1 = lookup_attribute ("optimize", DECL_ATTRIBUTES (olddecl)); diff --git a/gcc/c/c-decl.cc b/gcc/c/c-decl.cc index 01326570e2b2..25c23786fca7 100644 --- a/gcc/c/c-decl.cc +++ b/gcc/c/c-decl.cc @@ -62,6 +62,7 @@ along with GCC; see the file COPYING3. If not see #include "omp-general.h" #include "omp-offload.h" /* For offload_vars. */ #include "c-parser.h" +#include "gcc-urlifier.h" #include "tree-pretty-print.h" @@ -5683,8 +5684,11 @@ start_decl (struct c_declarator *declarator, struct c_declspecs *declspecs, && DECL_DECLARED_INLINE_P (decl) && DECL_UNINLINABLE (decl) && lookup_attribute ("noinline", DECL_ATTRIBUTES (decl))) - warning (OPT_Wattributes, "inline function %q+D given attribute %qs", - decl, "noinline"); + { + auto_urlify_attributes sentinel; + warning (OPT_Wattributes, "inline function %q+D given attribute %qs", + decl, "noinline"); + } /* C99 6.7.4p3: An inline definition of a function with external linkage shall not contain a definition of a modifiable object @@ -10587,9 +10591,12 @@ start_function (struct c_declspecs *declspecs, struct c_declarator *declarator, if (DECL_DECLARED_INLINE_P (decl1) && DECL_UNINLINABLE (decl1) && lookup_attribute ("noinline", DECL_ATTRIBUTES (decl1))) - warning_at (loc, OPT_Wattributes, - "inline function %qD given attribute %qs", - decl1, "noinline"); + { + auto_urlify_attributes sentinel; + warning_at (loc, OPT_Wattributes, + "inline function %qD given attribute %qs", + decl1, "noinline"); + } /* Handle gnu_inline attribute. */ if (declspecs->inline_p diff --git a/gcc/c/c-parser.cc b/gcc/c/c-parser.cc index e83e9c683f75..8ed5cbe16bcf 100644 --- a/gcc/c/c-parser.cc +++ b/gcc/c/c-parser.cc @@ -74,6 +74,7 @@ along with GCC; see the file COPYING3. If not see #include "bitmap.h" #include "analyzer/analyzer-language.h" #include "toplev.h" +#include "gcc-urlifier.h" /* We need to walk over decls with incomplete struct/union/enum types after parsing the whole translation unit. @@ -7750,6 +7751,7 @@ c_parser_statement_after_labels (c_parser *parser, bool *if_p, attrs = handle_assume_attribute (loc, attrs, true); else { + auto_urlify_attributes sentinel; warning_at (loc, OPT_Wattributes, "% attribute not followed by %<;%>"); has_assume = false; @@ -7767,17 +7769,23 @@ c_parser_statement_after_labels (c_parser *parser, bool *if_p, c_parser_consume_token (parser); } else - warning_at (loc, OPT_Wattributes, - "% attribute not followed " - "by %<;%>"); + { + auto_urlify_attributes sentinel; + warning_at (loc, OPT_Wattributes, + "% attribute not followed " + "by %<;%>"); + } } else if (has_assume) /* Eat the ';'. */ c_parser_consume_token (parser); else if (attrs != NULL_TREE) - warning_at (loc, OPT_Wattributes, - "only attribute % or % can " - "be applied to a null statement"); + { + auto_urlify_attributes sentinel; + warning_at (loc, OPT_Wattributes, + "only attribute % or % can " + "be applied to a null statement"); + } break; } default: diff --git a/gcc/c/c-typeck.cc b/gcc/c/c-typeck.cc index ffcab7df4d3b..f1089308dba4 100644 --- a/gcc/c/c-typeck.cc +++ b/gcc/c/c-typeck.cc @@ -53,6 +53,7 @@ along with GCC; see the file COPYING3. If not see #include "attribs.h" #include "asan.h" #include "realmpfr.h" +#include "gcc-urlifier.h" /* Possible cases of implicit conversions. Used to select diagnostic messages and control folding initializers in convert_for_assignment. */ @@ -6092,6 +6093,7 @@ maybe_warn_nodiscard (location_t loc, tree expr) if (args) args = TREE_VALUE (args); auto_diagnostic_group d; + auto_urlify_attributes sentinel; int warned; if (args) warned = warning_at (loc, OPT_Wunused_result, @@ -6114,6 +6116,7 @@ maybe_warn_nodiscard (location_t loc, tree expr) if (args) args = TREE_VALUE (args); auto_diagnostic_group d; + auto_urlify_attributes sentinel; int warned; if (args) warned = warning_at (loc, OPT_Wunused_result, diff --git a/gcc/cp/cp-gimplify.cc b/gcc/cp/cp-gimplify.cc index e6629dea5fdc..4aadb1bebcf2 100644 --- a/gcc/cp/cp-gimplify.cc +++ b/gcc/cp/cp-gimplify.cc @@ -42,6 +42,7 @@ along with GCC; see the file COPYING3. If not see #include "cgraph.h" #include "omp-general.h" #include "opts.h" +#include "gcc-urlifier.h" /* Keep track of forward references to immediate-escalating functions in case they become consteval. This vector contains ADDR_EXPRs and @@ -3628,8 +3629,11 @@ process_stmt_hotness_attribute (tree std_attrs, location_t attrs_loc) SET_EXPR_LOCATION (pred, attrs_loc); add_stmt (pred); if (tree other = lookup_hotness_attribute (TREE_CHAIN (attr))) - warning (OPT_Wattributes, "ignoring attribute %qE after earlier %qE", - get_attribute_name (other), name); + { + auto_urlify_attributes sentinel; + warning (OPT_Wattributes, "ignoring attribute %qE after earlier %qE", + get_attribute_name (other), name); + } std_attrs = remove_hotness_attribute (std_attrs); } return std_attrs; diff --git a/gcc/cp/cvt.cc b/gcc/cp/cvt.cc index db086c017e89..05db602066a3 100644 --- a/gcc/cp/cvt.cc +++ b/gcc/cp/cvt.cc @@ -36,6 +36,7 @@ along with GCC; see the file COPYING3. If not see #include "stringpool.h" #include "attribs.h" #include "escaped_string.h" +#include "gcc-urlifier.h" static tree convert_to_pointer_force (tree, tree, tsubst_flags_t); static tree build_type_conversion (tree, tree); @@ -1091,6 +1092,7 @@ maybe_warn_nodiscard (tree expr, impl_conv_void implicit) "declared with attribute %%s")); const char *raw_msg = msg ? (const char *) msg : ""; auto_diagnostic_group d; + auto_urlify_attributes sentinel; if (warning_at (loc, OPT_Wunused_result, format, fn, raw_msg)) inform (DECL_SOURCE_LOCATION (fn), "declared here"); } @@ -1109,6 +1111,7 @@ maybe_warn_nodiscard (tree expr, impl_conv_void implicit) "declared with attribute %%s")); const char *raw_msg = msg ? (const char *) msg : ""; auto_diagnostic_group d; + auto_urlify_attributes sentinel; if (warning_at (loc, OPT_Wunused_result, format, rettype, raw_msg)) { if (fn) @@ -1123,6 +1126,7 @@ maybe_warn_nodiscard (tree expr, impl_conv_void implicit) { /* The TARGET_EXPR confuses do_warn_unused_result into thinking that the result is used, so handle that case here. */ + auto_urlify_attributes sentinel; if (fn) { auto_diagnostic_group d; diff --git a/gcc/cp/decl.cc b/gcc/cp/decl.cc index 03deb1493a43..f756d6df13ee 100644 --- a/gcc/cp/decl.cc +++ b/gcc/cp/decl.cc @@ -60,6 +60,7 @@ along with GCC; see the file COPYING3. If not see #include "omp-offload.h" /* For offload_vars. */ #include "opts.h" #include "langhooks-def.h" /* For lhd_simulate_record_decl */ +#include "gcc-urlifier.h" /* Possible cases of bad specifiers type used by bad_specifiers. */ enum bad_spec_place { @@ -5991,8 +5992,11 @@ start_decl (const cp_declarator *declarator, && DECL_DECLARED_INLINE_P (decl) && DECL_UNINLINABLE (decl) && lookup_attribute ("noinline", DECL_ATTRIBUTES (decl))) - warning_at (DECL_SOURCE_LOCATION (decl), 0, - "inline function %qD given attribute %qs", decl, "noinline"); + { + auto_urlify_attributes sentinel; + warning_at (DECL_SOURCE_LOCATION (decl), 0, + "inline function %qD given attribute %qs", decl, "noinline"); + } if (TYPE_P (context) && COMPLETE_TYPE_P (complete_type (context))) { @@ -17840,8 +17844,11 @@ start_preparsed_function (tree decl1, tree attrs, int flags) if (DECL_DECLARED_INLINE_P (decl1) && lookup_attribute ("noinline", attrs)) - warning_at (DECL_SOURCE_LOCATION (decl1), 0, - "inline function %qD given attribute %qs", decl1, "noinline"); + { + auto_urlify_attributes sentinel; + warning_at (DECL_SOURCE_LOCATION (decl1), 0, + "inline function %qD given attribute %qs", decl1, "noinline"); + } /* Handle gnu_inline attribute. */ if (GNU_INLINE_P (decl1)) diff --git a/gcc/diagnostic.cc b/gcc/diagnostic.cc index 8fc22466b928..d3fd21d57f25 100644 --- a/gcc/diagnostic.cc +++ b/gcc/diagnostic.cc @@ -443,6 +443,14 @@ diagnostic_context::set_urlifier (urlifier *urlifier) m_urlifier = urlifier; } +/* Set the urlifier without deleting the existing one. */ + +void +diagnostic_context::override_urlifier (urlifier *urlifier) +{ + m_urlifier = urlifier; +} + void diagnostic_context::create_edit_context () { diff --git a/gcc/diagnostic.h b/gcc/diagnostic.h index 4969f07836cc..6306f0874404 100644 --- a/gcc/diagnostic.h +++ b/gcc/diagnostic.h @@ -454,6 +454,7 @@ public: void set_text_art_charset (enum diagnostic_text_art_charset charset); void set_client_data_hooks (diagnostic_client_data_hooks *hooks); void set_urlifier (urlifier *); + void override_urlifier (urlifier *); void create_edit_context (); void set_warning_as_error_requested (bool val) { @@ -509,6 +510,8 @@ public: { return m_client_data_hooks; } + urlifier *get_urlifier () const { return m_urlifier; } + text_art::theme *get_diagram_theme () const { return m_diagrams.m_theme; } int converted_column (expanded_location s) const; diff --git a/gcc/gcc-urlifier.cc b/gcc/gcc-urlifier.cc index be6459e8d7c1..2b1504c092cd 100644 --- a/gcc/gcc-urlifier.cc +++ b/gcc/gcc-urlifier.cc @@ -26,10 +26,20 @@ along with GCC; see the file COPYING3. If not see #include "gcc-urlifier.h" #include "opts.h" #include "options.h" +#include "diagnostic.h" #include "selftest.h" namespace { +static char * +make_doc_url (const char *doc_url_suffix) +{ + if (!doc_url_suffix) + return nullptr; + + return concat (DOCUMENTATION_ROOT_URL, doc_url_suffix, nullptr); +} + /* Concrete subclass of urlifier for generating links into GCC's HTML documentation. */ @@ -49,9 +59,6 @@ public: private: label_text get_url_suffix_for_option (const char *p, size_t sz) const; - static char * - make_doc_url (const char *doc_url_suffix); - unsigned int m_lang_mask; }; @@ -202,15 +209,6 @@ gcc_urlifier::get_url_suffix_for_option (const char *p, size_t sz) const return get_option_url_suffix (opt, m_lang_mask); } -char * -gcc_urlifier::make_doc_url (const char *doc_url_suffix) -{ - if (!doc_url_suffix) - return nullptr; - - return concat (DOCUMENTATION_ROOT_URL, doc_url_suffix, nullptr); -} - } // anonymous namespace urlifier * @@ -219,16 +217,112 @@ make_gcc_urlifier (unsigned int lang_mask) return new gcc_urlifier (lang_mask); } +/* class auto_override_urlifier. */ + +auto_override_urlifier::auto_override_urlifier (urlifier *new_urlifier) +: m_old_urlifier (global_dc->get_urlifier ()) +{ + global_dc->override_urlifier (new_urlifier); +} + +auto_override_urlifier::~auto_override_urlifier () +{ + global_dc->override_urlifier (m_old_urlifier); +} + +/* class attribute_urlifier : public urlifier. */ + +struct attr_url_entry +{ + const char *m_name; + const char *m_url_suffix; + const char *m_extra; + size_t m_name_len; +}; + +#include "attr-urls.def" + +/* Search for STR, LEN in the given TABLE. */ + +static const attr_url_entry * +find_attr_url_entry (const char *str, + size_t str_len, + const attr_url_entry *table, + size_t table_sz) +{ + /* This is linear search, but TABLE_SZ ought not to be very large. */ + for (size_t i = 0; i < table_sz; i++) + if (str_len == table[i].m_name_len) + if (0 == strncmp (str, table[i].m_name, str_len)) + return &table[i]; + + return nullptr; +} + +/* Search for STR, LEN in all of the attribute tables, in order. */ + +static const attr_url_entry * +find_attr_url_entry (const char *str, + size_t str_len) +{ + for (size_t table_idx = 0; table_idx < ARRAY_SIZE (attr_url_tables); + table_idx++) + if (const attr_url_entry *entry + = find_attr_url_entry (str, str_len, + attr_url_tables[table_idx].m_table, + attr_url_tables[table_idx].m_table_sz)) + return entry; + + return nullptr; +} + +char * +attribute_urlifier::get_url_for_quoted_text (const char *p, + size_t sz) const +{ + label_text url_suffix = get_url_suffix_for_quoted_text (p, sz); + if (url_suffix.get ()) + return make_doc_url (url_suffix.get ()); + return nullptr; +} + +label_text +attribute_urlifier::get_url_suffix_for_quoted_text (const char *p, + size_t sz) const +{ + /* Skip any text after a non-identifier character, so that + e.g. given "access(read_write, 2, 3)" we only compare + against "access". */ + for (size_t i = 0; i < sz; i++) + if (!ISIDNUM (p[i])) + { + /* Truncate to p[0..i). */ + sz = i; + break; + } + + // TODO: how to handle target-specific variants? + + if (const attr_url_entry *entry = find_attr_url_entry (p, sz)) + return label_text::borrow (entry->m_url_suffix); + + return label_text (); +} + +label_text +attribute_urlifier::get_url_suffix_for_quoted_text (const char *p) const +{ + return get_url_suffix_for_quoted_text (p, strlen (p)); +} + #if CHECKING_P namespace selftest { /* Selftests. */ -/* Run all of the selftests within this file. */ - -void -gcc_urlifier_cc_tests () +static void +test_gcc_urlifier () { /* Check that doc_urls.quoted_text is sorted. */ for (size_t idx = 1; idx < ARRAY_SIZE (doc_urls); idx++) @@ -262,6 +356,62 @@ gcc_urlifier_cc_tests () "gcc/Optimize-Options.html#index-finline"); } +static void +test_attribute_urlifier () +{ + attribute_urlifier u; + + ASSERT_EQ (u.get_url_suffix_for_quoted_text ("").get (), nullptr); + ASSERT_EQ (u.get_url_suffix_for_quoted_text (")").get (), nullptr); + + /* Examples of function attributes. */ + ASSERT_STREQ (u.get_url_suffix_for_quoted_text ("alias").get (), + "gcc/Common-Function-Attributes.html" + "#index-alias-function-attribute"); + + ASSERT_STREQ (u.get_url_suffix_for_quoted_text + ("access(read_write, 2, 3)").get (), + "gcc/Common-Function-Attributes.html" + "#index-access-function-attribute"); + + /* Example of enumerator attribute. */ + ASSERT_STREQ (u.get_url_suffix_for_quoted_text ("deprecated").get (), + "gcc/Enumerator-Attributes.html" + "#index-deprecated-enumerator-attribute"); + + /* We don't yet have an example of a label attribute, since all + label attributes have a matching function attribute of the same + name, which is found first. */ + + /* Example of statement attribute. */ + ASSERT_STREQ (u.get_url_suffix_for_quoted_text ("assume").get (), + "gcc/Statement-Attributes.html" + "#index-assume-statement-attribute"); + + /* Examples of type attributes. */ + ASSERT_STREQ (u.get_url_suffix_for_quoted_text ("hardbool").get (), + "gcc/Common-Type-Attributes.html" + "#index-hardbool-type-attribute"); + ASSERT_STREQ (u.get_url_suffix_for_quoted_text + ("packed").get (), + "gcc/Common-Type-Attributes.html" + "#index-packed-type-attribute"); + + /* Example of variable attribute. */ + ASSERT_STREQ (u.get_url_suffix_for_quoted_text ("nonstring").get (), + "gcc/Common-Variable-Attributes.html" + "#index-nonstring-variable-attribute"); +} + +/* Run all of the selftests within this file. */ + +void +gcc_urlifier_cc_tests () +{ + test_gcc_urlifier (); + test_attribute_urlifier (); +} + } // namespace selftest #endif /* #if CHECKING_P */ diff --git a/gcc/gcc-urlifier.h b/gcc/gcc-urlifier.h index 660d4f8828e7..88cec6661a0c 100644 --- a/gcc/gcc-urlifier.h +++ b/gcc/gcc-urlifier.h @@ -21,6 +21,56 @@ along with GCC; see the file COPYING3. If not see #ifndef GCC_GCC_URLIFIER_H #define GCC_GCC_URLIFIER_H +#include "pretty-print-urlifier.h" +#include "label-text.h" + extern urlifier *make_gcc_urlifier (unsigned int lang_mask); +/* RAII class to temporarily override global_dc's urlifier + with another one (possibly nullptr). */ + +class auto_override_urlifier +{ +public: + auto_override_urlifier (urlifier *new_urlifier); + ~auto_override_urlifier (); + +protected: + urlifier * const m_old_urlifier; +}; + +/* Subclass of urlifier that attempts to add URLs to quoted strings + containing names of attributes. */ + +class attribute_urlifier : public urlifier +{ +public: + char * + get_url_for_quoted_text (const char *p, size_t sz) const final override; + + label_text + get_url_suffix_for_quoted_text (const char *p, size_t sz) const; + + /* We use ATTRIBUTE_UNUSED as this helper is called only from ASSERTs. */ + label_text + get_url_suffix_for_quoted_text (const char *p) const ATTRIBUTE_UNUSED; +}; + +/* RAII class: during the lifetime of instances, global_dc will attempt + to auto-generate documentation links for any attributes mentioned in + quotes in diagnostics . */ + +class auto_urlify_attributes +{ +public: + auto_urlify_attributes () + : m_override (&m_urlifier) + { + } + +private: + attribute_urlifier m_urlifier; + auto_override_urlifier m_override; +}; + #endif /* GCC_GCC_URLIFIER_H */ diff --git a/gcc/gimple-ssa-warn-access.cc b/gcc/gimple-ssa-warn-access.cc index 61f9f0f3d310..3aede7207d18 100644 --- a/gcc/gimple-ssa-warn-access.cc +++ b/gcc/gimple-ssa-warn-access.cc @@ -55,6 +55,7 @@ #include "demangle.h" #include "attr-fnspec.h" #include "pointer-query.h" +#include "gcc-urlifier.h" /* Return true if tree node X has an associated location. */ @@ -4750,6 +4751,8 @@ pass_waccess::check_call_dangling (gcall *call) unsigned pass_waccess::execute (function *fun) { + auto_urlify_attributes sentinel; + calculate_dominance_info (CDI_DOMINATORS); calculate_dominance_info (CDI_POST_DOMINATORS); diff --git a/gcc/gimplify.cc b/gcc/gimplify.cc index 622c51d5c3fa..2945f4f0ac8e 100644 --- a/gcc/gimplify.cc +++ b/gcc/gimplify.cc @@ -70,6 +70,7 @@ along with GCC; see the file COPYING3. If not see #include "omp-offload.h" #include "context.h" #include "tree-nested.h" +#include "gcc-urlifier.h" /* Identifier for a basic condition, mapping it to other basic conditions of its Boolean expression. Basic conditions given the same uid (in the same @@ -2905,6 +2906,8 @@ expand_FALLTHROUGH_r (gimple_stmt_iterator *gsi_p, bool *handled_ops_p, static void expand_FALLTHROUGH (gimple_seq *seq_p) { + auto_urlify_attributes sentinel; + struct walk_stmt_info wi; location_t loc[2]; memset (&wi, 0, sizeof (wi)); diff --git a/gcc/internal-fn.cc b/gcc/internal-fn.cc index 4948b48bde81..9285c0496b47 100644 --- a/gcc/internal-fn.cc +++ b/gcc/internal-fn.cc @@ -55,6 +55,7 @@ along with GCC; see the file COPYING3. If not see #include "fold-const-call.h" #include "tree-ssa-live.h" #include "tree-outof-ssa.h" +#include "gcc-urlifier.h" /* For lang_hooks.types.type_for_mode. */ #include "langhooks.h" @@ -839,6 +840,7 @@ expand_TSAN_FUNC_EXIT (internal_fn, gcall *) static void expand_FALLTHROUGH (internal_fn, gcall *call) { + auto_urlify_attributes sentinel; error_at (gimple_location (call), "invalid use of attribute %"); } diff --git a/gcc/ipa-pure-const.cc b/gcc/ipa-pure-const.cc index d285462b6cf1..b39c2cf15f59 100644 --- a/gcc/ipa-pure-const.cc +++ b/gcc/ipa-pure-const.cc @@ -65,6 +65,7 @@ along with GCC; see the file COPYING3. If not see #include "ipa-fnsummary.h" #include "symtab-thunks.h" #include "dbgcnt.h" +#include "gcc-urlifier.h" /* Lattice values for const and pure functions. Everything starts out being const, then may drop to pure and then neither depending on @@ -214,6 +215,7 @@ suggest_attribute (int option, tree decl, bool known_finite, if (warned_about->contains (decl)) return warned_about; warned_about->add (decl); + auto_urlify_attributes sentinel; warning_at (DECL_SOURCE_LOCATION (decl), option, known_finite diff --git a/gcc/ipa-strub.cc b/gcc/ipa-strub.cc index 8fa7bdf53002..f6e09cd50b6d 100644 --- a/gcc/ipa-strub.cc +++ b/gcc/ipa-strub.cc @@ -63,6 +63,7 @@ along with GCC; see the file COPYING3. If not see #include "symtab-thunks.h" #include "attr-fnspec.h" #include "target.h" +#include "gcc-urlifier.h" /* This file introduces two passes that, together, implement machine-independent stack scrubbing, strub for short. It arranges @@ -675,6 +676,8 @@ can_strub_p (cgraph_node *node, bool report = false) if (!report && (!result || strub_always_inline_p (node))) return result; + auto_urlify_attributes sentinel; + if (flag_split_stack) { result = false; diff --git a/gcc/regenerate-attr-urls.py b/gcc/regenerate-attr-urls.py new file mode 100755 index 000000000000..04a04b863507 --- /dev/null +++ b/gcc/regenerate-attr-urls.py @@ -0,0 +1,209 @@ +#!/usr/bin/env python3 + +# Copyright (C) 2023-2024 Free Software Foundation, Inc. +# +# Script to regenerate attr-urls.def from generated HTML. +# +# This file is part of GCC. +# +# GCC is free software; you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 3, or (at your option) any later +# version. +# +# GCC is distributed in the hope that it will be useful, but WITHOUT ANY +# WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +# for more details. +# +# You should have received a copy of the GNU General Public License +# along with GCC; see the file COPYING3. If not see +# . */ + +DESCRIPTION = """ +Parses the generated HTML (from "make html") to locate anchors +for attributes, and generates a gcc/attr-urls.def file in the source tree, +giving URLs for each attribute, where it can. + +Usage (from build/gcc subdirectory): + ../../src/gcc/regenerate-attr-urls.py HTML/gcc-15.0.0/ ../../src + +To run unit tests: + ../../src/gcc/regenerate-attr-urls.py HTML/gcc-15.0.0/ ../../src --unit-test +""" + +import argparse +import json +import os +from pathlib import Path +from pprint import pprint +import sys +import re +import unittest + +class Index: + def __init__(self): + self.entries = [] + self.entries_by_kind = {} + + def add_entry(self, url_suffix, name, kind, extra_text, verbose=False): + #if len(self.entries) > 5: + # return + self.entries.append( (url_suffix, name, kind, extra_text) ) + + if kind in self.entries_by_kind: + by_kind = self.entries_by_kind[kind] + else: + by_kind = [] + self.entries_by_kind[kind] = by_kind + by_kind.append( (name, url_suffix, extra_text) ) + + def parse_attribute_index(self, input_filename, verbose=False): + with open(input_filename) as f: + for line in f: + self.parse_html_line_attribute_index(line, verbose) + + def parse_html_line_attribute_index(self, line, verbose=False): + if verbose: + print(repr(line)) + + # Update for this in the GCC website's bin/preprocess process_html_file: + # | sed -e 's/_002d/-/g' -e 's/_002a/*/g' \ + line = line.replace('_002d', '-') + line = line.replace('_002a', '*') + + # e.g. access function attribute + # e.g. nocompression function attribute, MIPS + m = re.search(r']*>([\S]+) (\S+) attribute([^<]*)', line) + if not m: + return + if verbose: + print(m.groups()) + + url_suffix, name, kind, extra_text = m.groups() + + if extra_text.startswith(', '): + extra_text = extra_text[2:] + + # Reject anchors where the name contains a paren + # e.g. 'target("3dnowa")': + if '(' in name: + return + + self.add_entry(url_suffix, name, kind, extra_text) + + def generate_file(self, dstpath): + with open(dstpath, 'w') as outf: + self.write_file(outf) + + def write_file(self, outf): + outf.write("/* Autogenerated by regenerate-attr-urls.py. */\n\n") + + for kind in sorted(self.entries_by_kind.keys()): + by_kind = self.entries_by_kind[kind] + outf.write("const attr_url_entry %s_attrs[] = {\n" % kind) + for name, url_suffix, extra_text in sorted(self.entries_by_kind[kind]): + outf.write(' { "%s", "gcc/%s", "%s", %i},\n' + % (name, url_suffix, extra_text, len(name))) + outf.write("};\n\n") + + outf.write('static const struct attr_url_table {\n') + outf.write(' const attr_url_entry *m_table;\n') + outf.write(' const size_t m_table_sz;\n') + outf.write('} attr_url_tables[] = {\n') + for kind in sorted(self.entries_by_kind.keys()): + outf.write(" { %s_attrs, ARRAY_SIZE (%s_attrs) },\n" % (kind, kind)) + outf.write("};\n") + +INDEX_REL_PATH = 'gcc/Concept-and-Symbol-Index.html' + +class TestParsingIndex(unittest.TestCase): + def test_function_attribute(self): + index = Index() + index.parse_html_line_attribute_index('access function attribute') + self.assertEqual(index.entries, [('Common-Function-Attributes.html#index-access-function-attribute', + 'access', + 'function', + '')]) + + def test_function_attribute_with_target(self): + index = Index() + index.parse_html_line_attribute_index('nocompression function attribute, MIPS') + self.assertEqual(index.entries, [('MIPS-Function-Attributes.html#index-nocompression-function-attribute_002c-MIPS', + 'nocompression', + 'function', + 'MIPS')]) + + def test_reject_parens(self): + index = Index() + index.parse_html_line_attribute_index('target("3dnow") function attribute, x86') + self.assertEqual(len(index.entries), 0) + + def test_type_attribute(self): + index = Index() + index.parse_html_line_attribute_index('aligned type attribute') + self.assertEqual(index.entries, [('Common-Type-Attributes.html#index-aligned-type-attribute', + 'aligned', + 'type', + '')]) + + def test_enumerator_attribute(self): + index = Index() + index.parse_html_line_attribute_index('deprecated enumerator attribute') + self.assertEqual(index.entries, [('Enumerator-Attributes.html#index-deprecated-enumerator-attribute', + 'deprecated', + 'enumerator', + '')]) + def test_label_attribute(self): + index = Index() + index.parse_html_line_attribute_index('cold label attribute') + self.assertEqual(index.entries, [('Label-Attributes.html#index-cold-label-attribute', + 'cold', + 'label', + '')]) + + def test_statement_attribute(self): + index = Index() + index.parse_html_line_attribute_index('assume statement attribute') + self.assertEqual(index.entries, [('Statement-Attributes.html#index-assume-statement-attribute', + 'assume', + 'statement', + '')]) + + def test_variable_attribute(self): + index = Index() + index.parse_html_line_attribute_index('absdata variable attribute, AVR') + self.assertEqual(index.entries, [('AVR-Variable-Attributes.html#index-absdata-variable-attribute_002c-AVR', + 'absdata', + 'variable', + 'AVR')]) + + def test_parse_attribute_index(self): + index = Index() + index.parse_attribute_index(INPUT_HTML_PATH / INDEX_REL_PATH) + self.assertEqual(index.entries_by_kind['enumerator'][0], + ('deprecated', + 'Enumerator-Attributes.html#index-deprecated-enumerator-attribute', + '')) + self.assertEqual(index.entries_by_kind['label'][0], + ('cold', 'Label-Attributes.html#index-cold-label-attribute', '')) + +def main(args): + index = Index() + index.parse_attribute_index(args.base_html_dir / INDEX_REL_PATH) + dstpath = args.src_gcc_dir / 'gcc' / 'attr-urls.def' + index.generate_file(dstpath) + +if __name__ == '__main__': + parser = argparse.ArgumentParser(description=DESCRIPTION, + formatter_class=argparse.RawDescriptionHelpFormatter) + parser.add_argument('base_html_dir', type=Path) + parser.add_argument('src_gcc_dir', type=Path) + parser.add_argument('--unit-test', action='store_true') + args = parser.parse_args() + + if args.unit_test: + INPUT_HTML_PATH = args.base_html_dir + unittest.main(argv=[sys.argv[0], '-v']) + else: + main(args) diff --git a/gcc/tree-cfg.cc b/gcc/tree-cfg.cc index 7fb7b92966be..35cbe0dd30f7 100644 --- a/gcc/tree-cfg.cc +++ b/gcc/tree-cfg.cc @@ -65,6 +65,7 @@ along with GCC; see the file COPYING3. If not see #include "asan.h" #include "profile.h" #include "sreal.h" +#include "gcc-urlifier.h" /* This file contains functions for building the Control Flow Graph (CFG) for a function tree. */ @@ -9934,6 +9935,8 @@ do_warn_unused_result (gimple_seq seq) if (lookup_attribute ("warn_unused_result", TYPE_ATTRIBUTES (ftype))) { + auto_urlify_attributes sentinel; + location_t loc = gimple_location (g); if (fdecl) diff --git a/gcc/tree-ssa-uninit.cc b/gcc/tree-ssa-uninit.cc index 726684e472aa..8b00bab92630 100644 --- a/gcc/tree-ssa-uninit.cc +++ b/gcc/tree-ssa-uninit.cc @@ -42,6 +42,7 @@ along with GCC; see the file COPYING3. If not see #include "domwalk.h" #include "tree-ssa-sccvn.h" #include "cfganal.h" +#include "gcc-urlifier.h" /* This implements the pass that does predicate aware warning on uses of possibly uninitialized variables. The pass first collects the set of @@ -455,6 +456,7 @@ maybe_warn_read_write_only (tree fndecl, gimple *stmt, tree arg, tree ptr) const char* const access_str = TREE_STRING_POINTER (access->to_external_string ()); + auto_urlify_attributes sentinel; location_t parmloc = DECL_SOURCE_LOCATION (parm); inform (parmloc, "accessing argument %u of a function declared with " "attribute %<%s%>", @@ -876,6 +878,7 @@ maybe_warn_pass_by_reference (gcall *stmt, wlimits &wlims) const char* const access_str = TREE_STRING_POINTER (access->to_external_string ()); + auto_urlify_attributes sentinel; if (fndecl) { location_t loc = DECL_SOURCE_LOCATION (fndecl);