diff --git a/contrib/gcc_update b/contrib/gcc_update
index 2ee1bc13167..dd8b6d0b6bf 100755
--- a/contrib/gcc_update
+++ b/contrib/gcc_update
@@ -94,6 +94,7 @@ gcc/config/rs6000/rs6000-tables.opt: gcc/config/rs6000/rs6000-cpus.def gcc/confi
 gcc/config/rs6000/fusion.md: gcc/config/rs6000/genfusion.pl
 # And then, language-specific files
 gcc/cp/cfns.h: gcc/cp/cfns.gperf
+gcc/cp/std-name-hint.h: gcc/cp/std-name-hint.gperf
 # testsuite
 # Without this, _Pragma3.c can have a false negative.
 gcc/testsuite/gcc.dg/cpp/_Pragma3.c: gcc/testsuite/gcc.dg/cpp/mi1c.h
diff --git a/gcc/cp/Make-lang.in b/gcc/cp/Make-lang.in
index 23d98c897b5..38d8eeed1f0 100644
--- a/gcc/cp/Make-lang.in
+++ b/gcc/cp/Make-lang.in
@@ -153,6 +153,15 @@ endif
 	gperf -o -C -E -k '1-6,$$' -j1 -D -N 'libc_name_p' -L C++ \
 		$(srcdir)/cp/cfns.gperf --output-file $(srcdir)/cp/cfns.h
 
+# The same procedure for the std-name-hint.gperf file.
+ifeq ($(ENABLE_MAINTAINER_RULES), true)
+$(srcdir)/cp/std-name-hint.h: $(srcdir)/cp/std-name-hint.gperf
+else
+$(srcdir)/cp/std-name-hint.h:
+endif
+	gperf -o -C -E -k '1,2,7,11,$$' -D -N find -L C++ \
+		$(srcdir)/cp/std-name-hint.gperf --output-file $(srcdir)/cp/std-name-hint.h
+
 cc1plus.fda: ../stage1-gcc/cc1plus$(exeext) ../prev-gcc/$(PERF_DATA)
 	$(CREATE_GCOV) -binary ../stage1-gcc/cc1plus$(exeext) -gcov cc1plus.fda -profile ../prev-gcc/$(PERF_DATA) -gcov_version 1
 
diff --git a/gcc/cp/name-lookup.cc b/gcc/cp/name-lookup.cc
index ce622761a1a..f89a1dc4111 100644
--- a/gcc/cp/name-lookup.cc
+++ b/gcc/cp/name-lookup.cc
@@ -6691,20 +6691,14 @@ suggest_alternatives_in_other_namespaces (location_t location, tree name)
 }
 
 /* A well-known name within the C++ standard library, returned by
-   get_std_name_hint.  */
+   get_std_name_hint.
 
-struct std_name_hint
-{
-  /* A name within "std::".  */
-  const char *name;
+   The gperf-generated file contains the definition of the class
+   "std_name_hint_lookup" with a static member function which
+   returns the pointer to a structure "std_name_hint" which
+   is also defined in that file.  */
 
-  /* The header name defining it within the C++ Standard Library
-     (with '<' and '>').  */
-  const char *header;
-
-  /* The dialect of C++ in which this was added.  */
-  enum cxx_dialect min_dialect;
-};
+#include "std-name-hint.h"
 
 /* Subroutine of maybe_suggest_missing_header for handling unrecognized names
    for some of the most common names within "std::".
@@ -6713,218 +6707,7 @@ struct std_name_hint
 static const std_name_hint *
 get_std_name_hint (const char *name)
 {
-  static const std_name_hint hints[] = {
-    /* <any>.  */
-    {"any", "<any>", cxx17},
-    {"any_cast", "<any>", cxx17},
-    {"make_any", "<any>", cxx17},
-    /* <array>.  */
-    {"array", "<array>", cxx11},
-    {"to_array", "<array>", cxx20},
-    /* <atomic>.  */
-    {"atomic", "<atomic>", cxx11},
-    {"atomic_flag", "<atomic>", cxx11},
-    {"atomic_ref", "<atomic>", cxx20},
-    /* <bitset>.  */
-    {"bitset", "<bitset>", cxx11},
-    /* <compare> */
-    {"weak_equality", "<compare>", cxx20},
-    {"strong_equality", "<compare>", cxx20},
-    {"partial_ordering", "<compare>", cxx20},
-    {"weak_ordering", "<compare>", cxx20},
-    {"strong_ordering", "<compare>", cxx20},
-    /* <complex>.  */
-    {"complex", "<complex>", cxx98},
-    {"complex_literals", "<complex>", cxx14},
-    /* <condition_variable>. */
-    {"condition_variable", "<condition_variable>", cxx11},
-    {"condition_variable_any", "<condition_variable>", cxx11},
-    /* <cstddef>.  */
-    {"byte", "<cstddef>", cxx17},
-    /* <deque>.  */
-    {"deque", "<deque>", cxx98},
-    /* <forward_list>.  */
-    {"forward_list", "<forward_list>", cxx11},
-    /* <fstream>.  */
-    {"basic_filebuf", "<fstream>", cxx98},
-    {"basic_ifstream", "<fstream>", cxx98},
-    {"basic_ofstream", "<fstream>", cxx98},
-    {"basic_fstream", "<fstream>", cxx98},
-    {"fstream", "<fstream>", cxx98},
-    {"ifstream", "<fstream>", cxx98},
-    {"ofstream", "<fstream>", cxx98},
-    /* <functional>.  */
-    {"bind", "<functional>", cxx11},
-    {"bind_front", "<functional>", cxx20},
-    {"function", "<functional>", cxx11},
-    {"hash", "<functional>", cxx11},
-    {"invoke", "<functional>", cxx17},
-    {"mem_fn", "<functional>", cxx11},
-    {"not_fn", "<functional>", cxx17},
-    {"reference_wrapper", "<functional>", cxx11},
-    {"unwrap_reference", "<functional>", cxx20},
-    {"unwrap_reference_t", "<functional>", cxx20},
-    {"unwrap_ref_decay", "<functional>", cxx20},
-    {"unwrap_ref_decay_t", "<functional>", cxx20},
-    /* <future>. */
-    {"async", "<future>", cxx11},
-    {"future", "<future>", cxx11},
-    {"packaged_task", "<future>", cxx11},
-    {"promise", "<future>", cxx11},
-    /* <iostream>.  */
-    {"cin", "<iostream>", cxx98},
-    {"cout", "<iostream>", cxx98},
-    {"cerr", "<iostream>", cxx98},
-    {"clog", "<iostream>", cxx98},
-    {"wcin", "<iostream>", cxx98},
-    {"wcout", "<iostream>", cxx98},
-    {"wclog", "<iostream>", cxx98},
-    /* <istream>.  */
-    {"istream", "<istream>", cxx98},
-    /* <iterator>.  */
-    {"advance", "<iterator>", cxx98},
-    {"back_inserter", "<iterator>", cxx98},
-    {"begin", "<iterator>", cxx11},
-    {"distance", "<iterator>", cxx98},
-    {"end", "<iterator>", cxx11},
-    {"front_inserter", "<iterator>", cxx98},
-    {"inserter", "<iterator>", cxx98},
-    {"istream_iterator", "<iterator>", cxx98},
-    {"istreambuf_iterator", "<iterator>", cxx98},
-    {"iterator_traits", "<iterator>", cxx98},
-    {"move_iterator", "<iterator>", cxx11},
-    {"next", "<iterator>", cxx11},
-    {"ostream_iterator", "<iterator>", cxx98},
-    {"ostreambuf_iterator", "<iterator>", cxx98},
-    {"prev", "<iterator>", cxx11},
-    {"reverse_iterator", "<iterator>", cxx98},
-    /* <ostream>.  */
-    {"ostream", "<ostream>", cxx98},
-    /* <list>.  */
-    {"list", "<list>", cxx98},
-    /* <map>.  */
-    {"map", "<map>", cxx98},
-    {"multimap", "<map>", cxx98},
-    /* <memory>.  */
-    {"allocate_shared", "<memory>", cxx11},
-    {"allocator", "<memory>", cxx98},
-    {"allocator_traits", "<memory>", cxx11},
-    {"make_shared", "<memory>", cxx11},
-    {"make_unique", "<memory>", cxx14},
-    {"shared_ptr", "<memory>", cxx11},
-    {"unique_ptr", "<memory>", cxx11},
-    {"weak_ptr", "<memory>", cxx11},
-    /* <memory_resource>.  */
-    {"pmr", "<memory_resource>", cxx17},
-    /* <mutex>.  */
-    {"mutex", "<mutex>", cxx11},
-    {"timed_mutex", "<mutex>", cxx11},
-    {"recursive_mutex", "<mutex>", cxx11},
-    {"recursive_timed_mutex", "<mutex>", cxx11},
-    {"once_flag", "<mutex>", cxx11},
-    {"call_once,", "<mutex>", cxx11},
-    {"lock", "<mutex>", cxx11},
-    {"scoped_lock", "<mutex>", cxx17},
-    {"try_lock", "<mutex>", cxx11},
-    {"lock_guard", "<mutex>", cxx11},
-    {"unique_lock", "<mutex>", cxx11},
-    /* <optional>. */
-    {"optional", "<optional>", cxx17},
-    {"make_optional", "<optional>", cxx17},
-    /* <ostream>.  */
-    {"ostream", "<ostream>", cxx98},
-    {"wostream", "<ostream>", cxx98},
-    {"ends", "<ostream>", cxx98},
-    {"flush", "<ostream>", cxx98},
-    {"endl", "<ostream>", cxx98},
-    /* <queue>.  */
-    {"queue", "<queue>", cxx98},
-    {"priority_queue", "<queue>", cxx98},
-    /* <set>.  */
-    {"set", "<set>", cxx98},
-    {"multiset", "<set>", cxx98},
-    /* <shared_mutex>.  */
-    {"shared_lock", "<shared_mutex>", cxx14},
-    {"shared_mutex", "<shared_mutex>", cxx17},
-    {"shared_timed_mutex", "<shared_mutex>", cxx14},
-    /* <source_location>.  */
-    {"source_location", "<source_location>", cxx20},
-    /* <sstream>.  */
-    {"basic_stringbuf", "<sstream>", cxx98},
-    {"basic_istringstream", "<sstream>", cxx98},
-    {"basic_ostringstream", "<sstream>", cxx98},
-    {"basic_stringstream", "<sstream>", cxx98},
-    {"istringstream", "<sstream>", cxx98},
-    {"ostringstream", "<sstream>", cxx98},
-    {"stringstream", "<sstream>", cxx98},
-    /* <stack>.  */
-    {"stack", "<stack>", cxx98},
-    /* <string>.  */
-    {"basic_string", "<string>", cxx98},
-    {"string", "<string>", cxx98},
-    {"wstring", "<string>", cxx98},
-    {"u8string", "<string>", cxx20},
-    {"u16string", "<string>", cxx11},
-    {"u32string", "<string>", cxx11},
-    /* <string_view>.  */
-    {"basic_string_view", "<string_view>", cxx17},
-    {"string_view", "<string_view>", cxx17},
-    /* <thread>.  */
-    {"thread", "<thread>", cxx11},
-    {"this_thread", "<thread>", cxx11},
-    /* <tuple>.  */
-    {"apply", "<tuple>", cxx17},
-    {"forward_as_tuple", "<tuple>", cxx11},
-    {"make_from_tuple", "<tuple>", cxx17},
-    {"make_tuple", "<tuple>", cxx11},
-    {"tie", "<tuple>", cxx11},
-    {"tuple", "<tuple>", cxx11},
-    {"tuple_cat", "<tuple>", cxx11},
-    {"tuple_element", "<tuple>", cxx11},
-    {"tuple_element_t", "<tuple>", cxx14},
-    {"tuple_size", "<tuple>", cxx11},
-    {"tuple_size_v", "<tuple>", cxx17},
-    /* <type_traits>.  */
-    {"enable_if", "<type_traits>", cxx11},
-    {"enable_if_t", "<type_traits>", cxx14},
-    {"invoke_result", "<type_traits>", cxx17},
-    {"invoke_result_t", "<type_traits>", cxx17},
-    {"remove_cvref", "<type_traits>", cxx20},
-    {"remove_cvref_t", "<type_traits>", cxx20},
-    {"type_identity", "<type_traits>", cxx20},
-    {"type_identity_t", "<type_traits>", cxx20},
-    {"void_t", "<type_traits>", cxx17},
-    {"conjunction", "<type_traits>", cxx17},
-    {"conjunction_v", "<type_traits>", cxx17},
-    {"disjunction", "<type_traits>", cxx17},
-    {"disjunction_v", "<type_traits>", cxx17},
-    {"negation", "<type_traits>", cxx17},
-    {"negation_v", "<type_traits>", cxx17},
-    /* <unordered_map>.  */
-    {"unordered_map", "<unordered_map>", cxx11},
-    {"unordered_multimap", "<unordered_map>", cxx11},
-    /* <unordered_set>.  */
-    {"unordered_set", "<unordered_set>", cxx11},
-    {"unordered_multiset", "<unordered_set>", cxx11},
-    /* <utility>.  */
-    {"declval", "<utility>", cxx11},
-    {"forward", "<utility>", cxx11},
-    {"make_pair", "<utility>", cxx98},
-    {"move", "<utility>", cxx11},
-    {"pair", "<utility>", cxx98},
-    /* <variant>.  */
-    {"variant", "<variant>", cxx17},
-    {"visit", "<variant>", cxx17},
-    /* <vector>.  */
-    {"vector", "<vector>", cxx98},
-  };
-  const size_t num_hints = ARRAY_SIZE (hints);
-  for (size_t i = 0; i < num_hints; i++)
-    {
-      if (strcmp (name, hints[i].name) == 0)
-	return &hints[i];
-    }
-  return NULL;
+  return std_name_hint_lookup::find(name, strlen(name));
 }
 
 /* Describe DIALECT.  */
diff --git a/gcc/cp/std-name-hint.gperf b/gcc/cp/std-name-hint.gperf
new file mode 100644
index 00000000000..976b90c3391
--- /dev/null
+++ b/gcc/cp/std-name-hint.gperf
@@ -0,0 +1,287 @@
+%language=C++
+%define class-name std_name_hint_lookup
+%struct-type
+%{
+/* Copyright (C) 2022 Free Software Foundation, Inc.
+
+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
+<http://www.gnu.org/licenses/>.  */
+%}
+struct std_name_hint
+{
+  /* A name within "std::".  */
+  const char *name;
+
+  /* The header name defining it within the C++ Standard Library
+     (with '<' and '>').  */
+  const char* header;
+
+  /* The dialect of C++ in which this was added.  */
+  enum cxx_dialect min_dialect;
+};
+%%
+# The standard-defined types, functions, and options in the std:: namespace
+# as defined in the C++ language specification.  The result is used in the
+# get_std_name_hint functions.
+#   throws an exception.
+#
+# <any>
+any, "<any>", cxx17
+any_cast, "<any>", cxx17
+make_any, "<any>", cxx17
+# <array>
+array, "<array>", cxx11
+to_array, "<array>", cxx20
+# <atomic>
+atomic, "<atomic>", cxx11
+atomic_flag, "<atomic>", cxx11
+atomic_ref, "<atomic>", cxx20
+# <bitset>
+bitset, "<bitset>", cxx11
+# <compare>
+weak_equality, "<compare>", cxx20
+strong_equality, "<compare>", cxx20
+partial_ordering, "<compare>", cxx20
+weak_ordering, "<compare>", cxx20
+strong_ordering, "<compare>", cxx20
+# <complex>
+complex, "<complex>", cxx98
+complex_literals, "<complex>", cxx14
+# <condition_variable>. */
+condition_variable, "<condition_variable>", cxx11
+condition_variable_any, "<condition_variable>", cxx11
+# <cstddef>
+byte, "<cstddef>", cxx17
+# <deque>
+deque, "<deque>", cxx98
+# <forward_list>
+forward_list, "<forward_list>", cxx11
+# <fstream>
+basic_filebuf, "<fstream>", cxx98
+basic_ifstream, "<fstream>", cxx98
+basic_ofstream, "<fstream>", cxx98
+basic_fstream, "<fstream>", cxx98
+fstream, "<fstream>", cxx98
+ifstream, "<fstream>", cxx98
+ofstream, "<fstream>", cxx98
+# <functional>
+bind, "<functional>", cxx11
+bind_front, "<functional>", cxx20
+function, "<functional>", cxx11
+hash, "<functional>", cxx11
+invoke, "<functional>", cxx17
+mem_fn, "<functional>", cxx11
+not_fn, "<functional>", cxx17
+reference_wrapper, "<functional>", cxx11
+unwrap_reference, "<functional>", cxx20
+unwrap_reference_t, "<functional>", cxx20
+unwrap_ref_decay, "<functional>", cxx20
+unwrap_ref_decay_t, "<functional>", cxx20
+# <future>. */
+async, "<future>", cxx11
+future, "<future>", cxx11
+packaged_task, "<future>", cxx11
+promise, "<future>", cxx11
+# <iomanip>
+resetiosflags, "<iomanip>", cxx98
+setiosflags, "<iomanip>", cxx98
+setbase, "<iomanip>", cxx98
+setfill, "<iomanip>", cxx98
+setprecision, "<iomanip>", cxx98
+setw, "<iomanip>", cxx98
+get_money, "<iomanip>", cxx11
+put_money, "<iomanip>", cxx11
+get_time, "<iomanip>", cxx11
+put_time, "<iomanip>", cxx11
+quoted, "<iomanip>", cxx14
+# <ios>
+boolalpha, "<ios>", cxx98
+noboolalpha, "<ios>", cxx98
+showbase, "<ios>", cxx98
+noshowbase, "<ios>", cxx98
+showpoint, "<ios>", cxx98
+noshowpoint, "<ios>", cxx98
+showpos, "<ios>", cxx98
+noshowpos, "<ios>", cxx98
+skipws, "<ios>", cxx98
+noskipws, "<ios>", cxx98
+uppercase, "<ios>", cxx98
+nouppercase, "<ios>", cxx98
+unitbuf, "<ios>", cxx98
+nounitbuf, "<ios>", cxx98
+internal, "<ios>", cxx98
+left, "<ios>", cxx98
+right, "<ios>", cxx98
+dec, "<ios>", cxx98
+hex, "<ios>", cxx98
+oct, "<ios>", cxx98
+fixed, "<ios>", cxx98
+scientific, "<ios>", cxx98
+hexfloat, "<ios>", cxx11
+defaultfloat, "<ios>", cxx11
+# <iostream>
+cin, "<iostream>", cxx98
+cout, "<iostream>", cxx98
+cerr, "<iostream>", cxx98
+clog, "<iostream>", cxx98
+wcin, "<iostream>", cxx98
+wcout, "<iostream>", cxx98
+wclog, "<iostream>", cxx98
+# <istream>
+istream, "<istream>", cxx98
+ws, "<istream>", cxx98
+# <iterator>
+advance, "<iterator>", cxx98
+back_inserter, "<iterator>", cxx98
+begin, "<iterator>", cxx11
+distance, "<iterator>", cxx98
+end, "<iterator>", cxx11
+front_inserter, "<iterator>", cxx98
+inserter, "<iterator>", cxx98
+istream_iterator, "<iterator>", cxx98
+istreambuf_iterator, "<iterator>", cxx98
+iterator_traits, "<iterator>", cxx98
+move_iterator, "<iterator>", cxx11
+next, "<iterator>", cxx11
+ostream_iterator, "<iterator>", cxx98
+ostreambuf_iterator, "<iterator>", cxx98
+prev, "<iterator>", cxx11
+reverse_iterator, "<iterator>", cxx98
+# <ostream>
+ostream, "<ostream>", cxx98
+ends, "<ostream>", cxx98
+flush, "<ostream>", cxx98
+endl, "<ostream>", cxx98
+emit_on_flush, "<ostream>", cxx20
+noemit_on_flush, "<ostream>", cxx20
+flush_emit, "<ostream>", cxx20
+# <list>
+list, "<list>", cxx98
+# <map>
+map, "<map>", cxx98
+multimap, "<map>", cxx98
+# <memory>
+allocate_shared, "<memory>", cxx11
+allocator, "<memory>", cxx98
+allocator_traits, "<memory>", cxx11
+make_shared, "<memory>", cxx11
+make_unique, "<memory>", cxx14
+shared_ptr, "<memory>", cxx11
+unique_ptr, "<memory>", cxx11
+weak_ptr, "<memory>", cxx11
+# <memory_resource>
+pmr, "<memory_resource>", cxx17
+# <mutex>
+mutex, "<mutex>", cxx11
+timed_mutex, "<mutex>", cxx11
+recursive_mutex, "<mutex>", cxx11
+recursive_timed_mutex, "<mutex>", cxx11
+once_flag, "<mutex>", cxx11
+call_once, "<mutex>", cxx11
+lock, "<mutex>", cxx11
+scoped_lock, "<mutex>", cxx17
+try_lock, "<mutex>", cxx11
+lock_guard, "<mutex>", cxx11
+unique_lock, "<mutex>", cxx11
+# <optional>. */
+optional, "<optional>", cxx17
+make_optional, "<optional>", cxx17
+# <ostream>
+ostream, "<ostream>", cxx98
+wostream, "<ostream>", cxx98
+ends, "<ostream>", cxx98
+flush, "<ostream>", cxx98
+endl, "<ostream>", cxx98
+# <queue>
+queue, "<queue>", cxx98
+priority_queue, "<queue>", cxx98
+# <set>
+set, "<set>", cxx98
+multiset, "<set>", cxx98
+# <shared_mutex>
+shared_lock, "<shared_mutex>", cxx14
+shared_mutex, "<shared_mutex>", cxx17
+shared_timed_mutex, "<shared_mutex>", cxx14
+# <source_location>
+source_location, "<source_location>", cxx20
+# <sstream>
+basic_stringbuf, "<sstream>", cxx98
+basic_istringstream, "<sstream>", cxx98
+basic_ostringstream, "<sstream>", cxx98
+basic_stringstream, "<sstream>", cxx98
+istringstream, "<sstream>", cxx98
+ostringstream, "<sstream>", cxx98
+stringstream, "<sstream>", cxx98
+# <stack>
+stack, "<stack>", cxx98
+# <string>
+basic_string, "<string>", cxx98
+string, "<string>", cxx98
+wstring, "<string>", cxx98
+u8string, "<string>", cxx20
+u16string, "<string>", cxx11
+u32string, "<string>", cxx11
+# <string_view>
+basic_string_view, "<string_view>", cxx17
+string_view, "<string_view>", cxx17
+# <thread>
+thread, "<thread>", cxx11
+this_thread, "<thread>", cxx11
+# <tuple>
+apply, "<tuple>", cxx17
+forward_as_tuple, "<tuple>", cxx11
+make_from_tuple, "<tuple>", cxx17
+make_tuple, "<tuple>", cxx11
+tie, "<tuple>", cxx11
+tuple, "<tuple>", cxx11
+tuple_cat, "<tuple>", cxx11
+tuple_element, "<tuple>", cxx11
+tuple_element_t, "<tuple>", cxx14
+tuple_size, "<tuple>", cxx11
+tuple_size_v, "<tuple>", cxx17
+# <type_traits>
+enable_if, "<type_traits>", cxx11
+enable_if_t, "<type_traits>", cxx14
+invoke_result, "<type_traits>", cxx17
+invoke_result_t, "<type_traits>", cxx17
+remove_cvref, "<type_traits>", cxx20
+remove_cvref_t, "<type_traits>", cxx20
+type_identity, "<type_traits>", cxx20
+type_identity_t, "<type_traits>", cxx20
+void_t, "<type_traits>", cxx17
+conjunction, "<type_traits>", cxx17
+conjunction_v, "<type_traits>", cxx17
+disjunction, "<type_traits>", cxx17
+disjunction_v, "<type_traits>", cxx17
+negation, "<type_traits>", cxx17
+negation_v, "<type_traits>", cxx17
+# <unordered_map>
+unordered_map, "<unordered_map>", cxx11
+unordered_multimap, "<unordered_map>", cxx11
+# <unordered_set>
+unordered_set, "<unordered_set>", cxx11
+unordered_multiset, "<unordered_set>", cxx11
+# <utility>
+declval, "<utility>", cxx11
+forward, "<utility>", cxx11
+make_pair, "<utility>", cxx98
+move, "<utility>", cxx11
+pair, "<utility>", cxx98
+# <variant>
+variant, "<variant>", cxx17
+visit, "<variant>", cxx17
+# <vector>
+vector, "<vector>", cxx98
diff --git a/gcc/cp/std-name-hint.h b/gcc/cp/std-name-hint.h
new file mode 100644
index 00000000000..c48eac30f90
--- /dev/null
+++ b/gcc/cp/std-name-hint.h
@@ -0,0 +1,675 @@
+/* C++ code produced by gperf version 3.1 */
+/* Command-line: gperf -o -C -E -D -N find -L C++ --output-file std-name-hint.h -k'1,2,7,11,$' std-name-hint.gperf  */
+
+#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+      && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+      && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+      && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+      && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+      && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+      && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+      && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+      && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+      && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+      && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+      && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+      && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+      && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+      && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+      && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+      && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+      && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+      && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+      && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+      && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+      && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+      && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
+/* The character set is not based on ISO-646.  */
+#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gperf@gnu.org>."
+#endif
+
+#line 4 "std-name-hint.gperf"
+
+/* Copyright (C) 2022 Free Software Foundation, Inc.
+
+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
+<http://www.gnu.org/licenses/>.  */
+#line 23 "std-name-hint.gperf"
+struct std_name_hint
+{
+  /* A name within "std::".  */
+  const char *name;
+
+  /* The header name defining it within the C++ Standard Library
+     (with '<' and '>').  */
+  const char* header;
+
+  /* The dialect of C++ in which this was added.  */
+  enum cxx_dialect min_dialect;
+};
+/* maximum key range = 626, duplicates = 4 */
+
+class std_name_hint_lookup
+{
+private:
+  static inline unsigned int hash (const char *str, size_t len);
+public:
+  static const struct std_name_hint *find (const char *str, size_t len);
+};
+
+inline unsigned int
+std_name_hint_lookup::hash (const char *str, size_t len)
+{
+  static const unsigned short asso_values[] =
+    {
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635,   5,
+      635,   0, 635, 635, 635, 635,  25, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635,  45, 635,  25,  70, 165,
+       20,   0,  35, 225, 190,  95, 635, 120, 183,  10,
+        5,  25, 165,   5,   5,  10,   0,  55,   4, 143,
+      115, 229, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635, 635, 635, 635, 635,
+      635, 635, 635, 635, 635, 635
+    };
+  unsigned int hval = len;
+
+  switch (hval)
+    {
+      default:
+        hval += asso_values[static_cast<unsigned char>(str[10])];
+      /*FALLTHROUGH*/
+      case 10:
+      case 9:
+      case 8:
+      case 7:
+        hval += asso_values[static_cast<unsigned char>(str[6])];
+      /*FALLTHROUGH*/
+      case 6:
+      case 5:
+      case 4:
+      case 3:
+      case 2:
+        hval += asso_values[static_cast<unsigned char>(str[1])];
+      /*FALLTHROUGH*/
+      case 1:
+        hval += asso_values[static_cast<unsigned char>(str[0])];
+        break;
+    }
+  return hval + asso_values[static_cast<unsigned char>(str[len - 1])];
+}
+
+const struct std_name_hint *
+std_name_hint_lookup::find (const char *str, size_t len)
+{
+  enum
+    {
+      TOTAL_KEYWORDS = 205,
+      MIN_WORD_LENGTH = 2,
+      MAX_WORD_LENGTH = 22,
+      MIN_HASH_VALUE = 9,
+      MAX_HASH_VALUE = 634
+    };
+
+  static const struct std_name_hint wordlist[] =
+    {
+#line 158 "std-name-hint.gperf"
+      {"next", "<iterator>", cxx11},
+#line 212 "std-name-hint.gperf"
+      {"set", "<set>", cxx98},
+#line 287 "std-name-hint.gperf"
+      {"vector", "<vector>", cxx98},
+#line 101 "std-name-hint.gperf"
+      {"setbase", "<iomanip>", cxx98},
+#line 165 "std-name-hint.gperf"
+      {"ends", "<ostream>", cxx98},
+#line 205 "std-name-hint.gperf"
+      {"ends", "<ostream>", cxx98},
+#line 86 "std-name-hint.gperf"
+      {"mem_fn", "<functional>", cxx11},
+#line 69 "std-name-hint.gperf"
+      {"deque", "<deque>", cxx98},
+#line 162 "std-name-hint.gperf"
+      {"reverse_iterator", "<iterator>", cxx98},
+#line 151 "std-name-hint.gperf"
+      {"end", "<iterator>", cxx11},
+#line 264 "std-name-hint.gperf"
+      {"void_t", "<type_traits>", cxx17},
+#line 284 "std-name-hint.gperf"
+      {"variant", "<variant>", cxx17},
+#line 281 "std-name-hint.gperf"
+      {"move", "<utility>", cxx11},
+#line 87 "std-name-hint.gperf"
+      {"not_fn", "<functional>", cxx17},
+#line 269 "std-name-hint.gperf"
+      {"negation", "<type_traits>", cxx17},
+#line 270 "std-name-hint.gperf"
+      {"negation_v", "<type_traits>", cxx17},
+#line 122 "std-name-hint.gperf"
+      {"nouppercase", "<ios>", cxx98},
+#line 43 "std-name-hint.gperf"
+      {"any_cast", "<any>", cxx17},
+#line 181 "std-name-hint.gperf"
+      {"make_unique", "<memory>", cxx14},
+#line 147 "std-name-hint.gperf"
+      {"advance", "<iterator>", cxx98},
+#line 157 "std-name-hint.gperf"
+      {"move_iterator", "<iterator>", cxx11},
+#line 246 "std-name-hint.gperf"
+      {"make_from_tuple", "<tuple>", cxx17},
+#line 134 "std-name-hint.gperf"
+      {"defaultfloat", "<ios>", cxx11},
+#line 249 "std-name-hint.gperf"
+      {"tuple", "<tuple>", cxx11},
+#line 257 "std-name-hint.gperf"
+      {"enable_if_t", "<type_traits>", cxx14},
+#line 164 "std-name-hint.gperf"
+      {"ostream", "<ostream>", cxx98},
+#line 203 "std-name-hint.gperf"
+      {"ostream", "<ostream>", cxx98},
+#line 261 "std-name-hint.gperf"
+      {"remove_cvref_t", "<type_traits>", cxx20},
+#line 209 "std-name-hint.gperf"
+      {"queue", "<queue>", cxx98},
+#line 159 "std-name-hint.gperf"
+      {"ostream_iterator", "<iterator>", cxx98},
+#line 227 "std-name-hint.gperf"
+      {"stringstream", "<sstream>", cxx98},
+#line 251 "std-name-hint.gperf"
+      {"tuple_element", "<tuple>", cxx11},
+#line 252 "std-name-hint.gperf"
+      {"tuple_element_t", "<tuple>", cxx14},
+#line 77 "std-name-hint.gperf"
+      {"fstream", "<fstream>", cxx98},
+#line 213 "std-name-hint.gperf"
+      {"multiset", "<set>", cxx98},
+#line 280 "std-name-hint.gperf"
+      {"make_pair", "<utility>", cxx98},
+#line 253 "std-name-hint.gperf"
+      {"tuple_size", "<tuple>", cxx11},
+#line 100 "std-name-hint.gperf"
+      {"setiosflags", "<iomanip>", cxx98},
+#line 99 "std-name-hint.gperf"
+      {"resetiosflags", "<iomanip>", cxx98},
+#line 149 "std-name-hint.gperf"
+      {"begin", "<iterator>", cxx11},
+#line 109 "std-name-hint.gperf"
+      {"quoted", "<iomanip>", cxx14},
+#line 275 "std-name-hint.gperf"
+      {"unordered_set", "<unordered_set>", cxx11},
+#line 276 "std-name-hint.gperf"
+      {"unordered_multiset", "<unordered_set>", cxx11},
+#line 256 "std-name-hint.gperf"
+      {"enable_if", "<type_traits>", cxx11},
+#line 95 "std-name-hint.gperf"
+      {"future", "<future>", cxx11},
+#line 260 "std-name-hint.gperf"
+      {"remove_cvref", "<type_traits>", cxx20},
+#line 248 "std-name-hint.gperf"
+      {"tie", "<tuple>", cxx11},
+#line 247 "std-name-hint.gperf"
+      {"make_tuple", "<tuple>", cxx11},
+#line 71 "std-name-hint.gperf"
+      {"forward_list", "<forward_list>", cxx11},
+#line 79 "std-name-hint.gperf"
+      {"ofstream", "<fstream>", cxx98},
+#line 285 "std-name-hint.gperf"
+      {"visit", "<variant>", cxx17},
+#line 127 "std-name-hint.gperf"
+      {"right", "<ios>", cxx98},
+#line 85 "std-name-hint.gperf"
+      {"invoke", "<functional>", cxx17},
+#line 279 "std-name-hint.gperf"
+      {"forward", "<utility>", cxx11},
+#line 114 "std-name-hint.gperf"
+      {"noshowbase", "<ios>", cxx98},
+#line 153 "std-name-hint.gperf"
+      {"inserter", "<iterator>", cxx98},
+#line 160 "std-name-hint.gperf"
+      {"ostreambuf_iterator", "<iterator>", cxx98},
+#line 51 "std-name-hint.gperf"
+      {"atomic_ref", "<atomic>", cxx20},
+#line 112 "std-name-hint.gperf"
+      {"noboolalpha", "<ios>", cxx98},
+#line 148 "std-name-hint.gperf"
+      {"back_inserter", "<iterator>", cxx98},
+#line 183 "std-name-hint.gperf"
+      {"unique_ptr", "<memory>", cxx11},
+#line 89 "std-name-hint.gperf"
+      {"unwrap_reference", "<functional>", cxx20},
+#line 90 "std-name-hint.gperf"
+      {"unwrap_reference_t", "<functional>", cxx20},
+#line 219 "std-name-hint.gperf"
+      {"source_location", "<source_location>", cxx20},
+#line 254 "std-name-hint.gperf"
+      {"tuple_size_v", "<tuple>", cxx17},
+#line 83 "std-name-hint.gperf"
+      {"function", "<functional>", cxx11},
+#line 144 "std-name-hint.gperf"
+      {"istream", "<istream>", cxx98},
+#line 229 "std-name-hint.gperf"
+      {"stack", "<stack>", cxx98},
+#line 154 "std-name-hint.gperf"
+      {"istream_iterator", "<iterator>", cxx98},
+#line 123 "std-name-hint.gperf"
+      {"unitbuf", "<ios>", cxx98},
+#line 224 "std-name-hint.gperf"
+      {"basic_stringstream", "<sstream>", cxx98},
+#line 245 "std-name-hint.gperf"
+      {"forward_as_tuple", "<tuple>", cxx11},
+#line 124 "std-name-hint.gperf"
+      {"nounitbuf", "<ios>", cxx98},
+#line 119 "std-name-hint.gperf"
+      {"skipws", "<ios>", cxx98},
+#line 75 "std-name-hint.gperf"
+      {"basic_ofstream", "<fstream>", cxx98},
+#line 156 "std-name-hint.gperf"
+      {"iterator_traits", "<iterator>", cxx98},
+#line 76 "std-name-hint.gperf"
+      {"basic_fstream", "<fstream>", cxx98},
+#line 131 "std-name-hint.gperf"
+      {"fixed", "<ios>", cxx98},
+#line 184 "std-name-hint.gperf"
+      {"weak_ptr", "<memory>", cxx11},
+#line 104 "std-name-hint.gperf"
+      {"setw", "<iomanip>", cxx98},
+#line 152 "std-name-hint.gperf"
+      {"front_inserter", "<iterator>", cxx98},
+#line 221 "std-name-hint.gperf"
+      {"basic_stringbuf", "<sstream>", cxx98},
+#line 145 "std-name-hint.gperf"
+      {"ws", "<istream>", cxx98},
+#line 92 "std-name-hint.gperf"
+      {"unwrap_ref_decay_t", "<functional>", cxx20},
+#line 53 "std-name-hint.gperf"
+      {"bitset", "<bitset>", cxx11},
+#line 78 "std-name-hint.gperf"
+      {"ifstream", "<fstream>", cxx98},
+#line 138 "std-name-hint.gperf"
+      {"cerr", "<iostream>", cxx98},
+#line 88 "std-name-hint.gperf"
+      {"reference_wrapper", "<functional>", cxx11},
+#line 97 "std-name-hint.gperf"
+      {"promise", "<future>", cxx11},
+#line 161 "std-name-hint.gperf"
+      {"prev", "<iterator>", cxx11},
+#line 82 "std-name-hint.gperf"
+      {"bind_front", "<functional>", cxx20},
+#line 186 "std-name-hint.gperf"
+      {"pmr", "<memory_resource>", cxx17},
+#line 155 "std-name-hint.gperf"
+      {"istreambuf_iterator", "<iterator>", cxx98},
+#line 188 "std-name-hint.gperf"
+      {"mutex", "<mutex>", cxx11},
+#line 126 "std-name-hint.gperf"
+      {"left", "<ios>", cxx98},
+#line 128 "std-name-hint.gperf"
+      {"dec", "<ios>", cxx98},
+#line 81 "std-name-hint.gperf"
+      {"bind", "<functional>", cxx11},
+#line 120 "std-name-hint.gperf"
+      {"noskipws", "<ios>", cxx98},
+#line 167 "std-name-hint.gperf"
+      {"endl", "<ostream>", cxx98},
+#line 207 "std-name-hint.gperf"
+      {"endl", "<ostream>", cxx98},
+#line 130 "std-name-hint.gperf"
+      {"oct", "<ios>", cxx98},
+#line 137 "std-name-hint.gperf"
+      {"cout", "<iostream>", cxx98},
+#line 49 "std-name-hint.gperf"
+      {"atomic", "<atomic>", cxx11},
+#line 282 "std-name-hint.gperf"
+      {"pair", "<utility>", cxx98},
+#line 174 "std-name-hint.gperf"
+      {"map", "<map>", cxx98},
+#line 193 "std-name-hint.gperf"
+      {"call_once", "<mutex>", cxx11},
+#line 94 "std-name-hint.gperf"
+      {"async", "<future>", cxx11},
+#line 116 "std-name-hint.gperf"
+      {"noshowpoint", "<ios>", cxx98},
+#line 204 "std-name-hint.gperf"
+      {"wostream", "<ostream>", cxx98},
+#line 258 "std-name-hint.gperf"
+      {"invoke_result", "<type_traits>", cxx17},
+#line 118 "std-name-hint.gperf"
+      {"noshowpos", "<ios>", cxx98},
+#line 259 "std-name-hint.gperf"
+      {"invoke_result_t", "<type_traits>", cxx17},
+#line 241 "std-name-hint.gperf"
+      {"thread", "<thread>", cxx11},
+#line 103 "std-name-hint.gperf"
+      {"setprecision", "<iomanip>", cxx98},
+#line 113 "std-name-hint.gperf"
+      {"showbase", "<ios>", cxx98},
+#line 74 "std-name-hint.gperf"
+      {"basic_ifstream", "<fstream>", cxx98},
+#line 178 "std-name-hint.gperf"
+      {"allocator", "<memory>", cxx98},
+#line 133 "std-name-hint.gperf"
+      {"hexfloat", "<ios>", cxx11},
+#line 117 "std-name-hint.gperf"
+      {"showpos", "<ios>", cxx98},
+#line 170 "std-name-hint.gperf"
+      {"flush_emit", "<ostream>", cxx20},
+#line 250 "std-name-hint.gperf"
+      {"tuple_cat", "<tuple>", cxx11},
+#line 179 "std-name-hint.gperf"
+      {"allocator_traits", "<memory>", cxx11},
+#line 191 "std-name-hint.gperf"
+      {"recursive_timed_mutex", "<mutex>", cxx11},
+#line 108 "std-name-hint.gperf"
+      {"put_time", "<iomanip>", cxx11},
+#line 210 "std-name-hint.gperf"
+      {"priority_queue", "<queue>", cxx98},
+#line 190 "std-name-hint.gperf"
+      {"recursive_mutex", "<mutex>", cxx11},
+#line 232 "std-name-hint.gperf"
+      {"string", "<string>", cxx98},
+#line 107 "std-name-hint.gperf"
+      {"get_time", "<iomanip>", cxx11},
+#line 223 "std-name-hint.gperf"
+      {"basic_ostringstream", "<sstream>", cxx98},
+#line 73 "std-name-hint.gperf"
+      {"basic_filebuf", "<fstream>", cxx98},
+#line 272 "std-name-hint.gperf"
+      {"unordered_map", "<unordered_map>", cxx11},
+#line 121 "std-name-hint.gperf"
+      {"uppercase", "<ios>", cxx98},
+#line 273 "std-name-hint.gperf"
+      {"unordered_multimap", "<unordered_map>", cxx11},
+#line 182 "std-name-hint.gperf"
+      {"shared_ptr", "<memory>", cxx11},
+#line 42 "std-name-hint.gperf"
+      {"any", "<any>", cxx17},
+#line 175 "std-name-hint.gperf"
+      {"multimap", "<map>", cxx98},
+#line 46 "std-name-hint.gperf"
+      {"array", "<array>", cxx11},
+#line 136 "std-name-hint.gperf"
+      {"cin", "<iostream>", cxx98},
+#line 238 "std-name-hint.gperf"
+      {"basic_string_view", "<string_view>", cxx17},
+#line 168 "std-name-hint.gperf"
+      {"emit_on_flush", "<ostream>", cxx20},
+#line 180 "std-name-hint.gperf"
+      {"make_shared", "<memory>", cxx11},
+#line 44 "std-name-hint.gperf"
+      {"make_any", "<any>", cxx17},
+#line 172 "std-name-hint.gperf"
+      {"list", "<list>", cxx98},
+#line 226 "std-name-hint.gperf"
+      {"ostringstream", "<sstream>", cxx98},
+#line 47 "std-name-hint.gperf"
+      {"to_array", "<array>", cxx20},
+#line 150 "std-name-hint.gperf"
+      {"distance", "<iterator>", cxx98},
+#line 197 "std-name-hint.gperf"
+      {"lock_guard", "<mutex>", cxx11},
+#line 111 "std-name-hint.gperf"
+      {"boolalpha", "<ios>", cxx98},
+#line 59 "std-name-hint.gperf"
+      {"strong_ordering", "<compare>", cxx20},
+#line 196 "std-name-hint.gperf"
+      {"try_lock", "<mutex>", cxx11},
+#line 267 "std-name-hint.gperf"
+      {"disjunction", "<type_traits>", cxx17},
+#line 268 "std-name-hint.gperf"
+      {"disjunction_v", "<type_traits>", cxx17},
+#line 67 "std-name-hint.gperf"
+      {"byte", "<cstddef>", cxx17},
+#line 115 "std-name-hint.gperf"
+      {"showpoint", "<ios>", cxx98},
+#line 64 "std-name-hint.gperf"
+      {"condition_variable", "<condition_variable>", cxx11},
+#line 129 "std-name-hint.gperf"
+      {"hex", "<ios>", cxx98},
+#line 141 "std-name-hint.gperf"
+      {"wcout", "<iostream>", cxx98},
+#line 222 "std-name-hint.gperf"
+      {"basic_istringstream", "<sstream>", cxx98},
+#line 169 "std-name-hint.gperf"
+      {"noemit_on_flush", "<ostream>", cxx20},
+#line 125 "std-name-hint.gperf"
+      {"internal", "<ios>", cxx98},
+#line 140 "std-name-hint.gperf"
+      {"wcin", "<iostream>", cxx98},
+#line 234 "std-name-hint.gperf"
+      {"u8string", "<string>", cxx20},
+#line 56 "std-name-hint.gperf"
+      {"strong_equality", "<compare>", cxx20},
+#line 62 "std-name-hint.gperf"
+      {"complex_literals", "<complex>", cxx14},
+#line 194 "std-name-hint.gperf"
+      {"lock", "<mutex>", cxx11},
+#line 189 "std-name-hint.gperf"
+      {"timed_mutex", "<mutex>", cxx11},
+#line 231 "std-name-hint.gperf"
+      {"basic_string", "<string>", cxx98},
+#line 96 "std-name-hint.gperf"
+      {"packaged_task", "<future>", cxx11},
+#line 239 "std-name-hint.gperf"
+      {"string_view", "<string_view>", cxx17},
+#line 225 "std-name-hint.gperf"
+      {"istringstream", "<sstream>", cxx98},
+#line 198 "std-name-hint.gperf"
+      {"unique_lock", "<mutex>", cxx11},
+#line 263 "std-name-hint.gperf"
+      {"type_identity_t", "<type_traits>", cxx20},
+#line 216 "std-name-hint.gperf"
+      {"shared_mutex", "<shared_mutex>", cxx17},
+#line 265 "std-name-hint.gperf"
+      {"conjunction", "<type_traits>", cxx17},
+#line 266 "std-name-hint.gperf"
+      {"conjunction_v", "<type_traits>", cxx17},
+#line 217 "std-name-hint.gperf"
+      {"shared_timed_mutex", "<shared_mutex>", cxx14},
+#line 102 "std-name-hint.gperf"
+      {"setfill", "<iomanip>", cxx98},
+#line 236 "std-name-hint.gperf"
+      {"u32string", "<string>", cxx11},
+#line 235 "std-name-hint.gperf"
+      {"u16string", "<string>", cxx11},
+#line 278 "std-name-hint.gperf"
+      {"declval", "<utility>", cxx11},
+#line 91 "std-name-hint.gperf"
+      {"unwrap_ref_decay", "<functional>", cxx20},
+#line 201 "std-name-hint.gperf"
+      {"make_optional", "<optional>", cxx17},
+#line 200 "std-name-hint.gperf"
+      {"optional", "<optional>", cxx17},
+#line 84 "std-name-hint.gperf"
+      {"hash", "<functional>", cxx11},
+#line 166 "std-name-hint.gperf"
+      {"flush", "<ostream>", cxx98},
+#line 206 "std-name-hint.gperf"
+      {"flush", "<ostream>", cxx98},
+#line 244 "std-name-hint.gperf"
+      {"apply", "<tuple>", cxx17},
+#line 61 "std-name-hint.gperf"
+      {"complex", "<complex>", cxx98},
+#line 242 "std-name-hint.gperf"
+      {"this_thread", "<thread>", cxx11},
+#line 177 "std-name-hint.gperf"
+      {"allocate_shared", "<memory>", cxx11},
+#line 132 "std-name-hint.gperf"
+      {"scientific", "<ios>", cxx98},
+#line 192 "std-name-hint.gperf"
+      {"once_flag", "<mutex>", cxx11},
+#line 106 "std-name-hint.gperf"
+      {"put_money", "<iomanip>", cxx11},
+#line 105 "std-name-hint.gperf"
+      {"get_money", "<iomanip>", cxx11},
+#line 195 "std-name-hint.gperf"
+      {"scoped_lock", "<mutex>", cxx17},
+#line 58 "std-name-hint.gperf"
+      {"weak_ordering", "<compare>", cxx20},
+#line 55 "std-name-hint.gperf"
+      {"weak_equality", "<compare>", cxx20},
+#line 215 "std-name-hint.gperf"
+      {"shared_lock", "<shared_mutex>", cxx14},
+#line 50 "std-name-hint.gperf"
+      {"atomic_flag", "<atomic>", cxx11},
+#line 142 "std-name-hint.gperf"
+      {"wclog", "<iostream>", cxx98},
+#line 65 "std-name-hint.gperf"
+      {"condition_variable_any", "<condition_variable>", cxx11},
+#line 139 "std-name-hint.gperf"
+      {"clog", "<iostream>", cxx98},
+#line 262 "std-name-hint.gperf"
+      {"type_identity", "<type_traits>", cxx20},
+#line 233 "std-name-hint.gperf"
+      {"wstring", "<string>", cxx98},
+#line 57 "std-name-hint.gperf"
+      {"partial_ordering", "<compare>", cxx20}
+    };
+
+  static const short lookup[] =
+    {
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,    0,   -1,   -1,   -1,    1,   -1,    2,
+        -1,    3,   -1, -228,   -1,    6, -201,   -2,
+        -1,    7,    8,   -1,    9,   -1,   -1,   -1,
+        -1,   -1,   -1,   10,   11,   -1,   -1,   12,
+        -1,   13,   -1,   14,   15,   -1,   16,   -1,
+        17,   -1,   -1,   18,   19,   20,   -1,   21,
+        -1,   22,   -1,   -1,   23,   24, -287,   -1,
+        27,   28,   29,   30,   31,   -1,   32,   -1,
+        33,   34,   35,   36,   37,   -1,   38,   -1,
+        39, -180,   -2,   -1,   -1,   -1,   40,   -1,
+        41,   -1,   -1,   -1,   -1,   42,   43,   -1,
+        44,   45,   46,   -1,   47,   -1,   48,   49,
+        50,   51,   52,   53,   -1,   -1,   54,   -1,
+        -1,   55,   56,   57,   58,   -1,   59,   -1,
+        60,   61,   -1,   62,   -1,   63,   64,   -1,
+        65,   -1,   -1,   -1,   66,   -1,   -1,   67,
+        68,   69,   70,   -1,   -1,   71,   -1,   -1,
+        72,   -1,   73,   -1,   -1,   74,   75,   -1,
+        -1,   76,   -1,   77,   78,   79,   -1,   80,
+        81,   -1,   -1,   -1,   -1,   82,   -1,   -1,
+        83,   -1,   -1,   84,   -1,   85,   86,   87,
+        -1,   88,   89,   -1,   90,   -1,   -1,   91,
+        92,   93,   -1,   94,   95,   96,   -1,   97,
+      -403,  100,  101,   -1,  102, -107,   -2,  103,
+        -1,   -1,   -1,  104,  105,  106,  107,   -1,
+        -1,   -1,   -1,  108,   -1,  109,  110,  111,
+       112,  113,  114,  115,   -1,   -1,  116,  117,
+        -1,   -1,   -1,  118,  119,  120,   -1,   -1,
+        -1,   -1,  121,   -1,  122,   -1,  123,  124,
+       125,  126,   -1,  127,  128,   -1,   -1,   -1,
+       129,   -1,   -1,   -1,   -1,  130,  131,   -1,
+        -1,   -1,  132,   -1,  133,   -1,  134,  135,
+       136,   -1,   -1,   -1,  137,   -1,  138,   -1,
+        -1,  139,   -1,   -1,  140,  141,   -1,   -1,
+        -1,   -1,  142,  143,   -1,   -1,   -1,  144,
+       145,   -1,   -1,   -1,   -1,  146,  147,  148,
+        -1,   -1,  149,   -1,   -1,  150,  151,  152,
+       153,   -1,   -1,  154,  155,   -1,   -1,   -1,
+        -1,  156,  157,  158,  159,  160,  161,   -1,
+        -1,   -1,   -1,   -1,  162,   -1,   -1,   -1,
+        -1,   -1,   -1,  163,  164,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,  165,  166,  167,   -1,   -1,   -1,
+       168,  169,   -1,   -1,  170,   -1,   -1,  171,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,  172,   -1,   -1,   -1,
+       173,  174,  175,   -1,   -1,   -1,   -1,  176,
+       177,   -1,   -1,   -1,   -1,  178,   -1,   -1,
+        -1,  179,   -1,  180,   -1,   -1,   -1,   -1,
+        -1,  181,   -1,   -1,   -1,   -1,  182,   -1,
+        -1,  183,   -1,   -1,   -1, -620,  -21,   -2,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+       186,   -1,   -1,  187,   -1,   -1,   -1,  188,
+        -1,  189,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,  190,   -1,  191,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,  192,
+        -1,   -1,   -1,   -1,  193,   -1,   -1,  194,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,  195,   -1,   -1,   -1,  196,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+       197,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,  198,   -1,   -1,   -1,   -1,
+        -1,   -1,  199,   -1,  200,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,  201,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,  202,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,  203,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+        -1,   -1,  204
+    };
+
+  if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
+    {
+      unsigned int key = hash (str, len);
+
+      if (key <= MAX_HASH_VALUE)
+        {
+          int index = lookup[key];
+
+          if (index >= 0)
+            {
+              const char *s = wordlist[index].name;
+
+              if (*str == *s && !strcmp (str + 1, s + 1))
+                return &wordlist[index];
+            }
+          else if (index < -TOTAL_KEYWORDS)
+            {
+              int offset = - 1 - TOTAL_KEYWORDS - index;
+              const struct std_name_hint *wordptr = &wordlist[TOTAL_KEYWORDS + lookup[offset]];
+              const struct std_name_hint *wordendptr = wordptr + -lookup[offset + 1];
+
+              while (wordptr < wordendptr)
+                {
+                  const char *s = wordptr->name;
+
+                  if (*str == *s && !strcmp (str + 1, s + 1))
+                    return wordptr;
+                  wordptr++;
+                }
+            }
+        }
+    }
+  return 0;
+}