[clangd] Update the include mappings for std symbols.

[hokein]

Summary

Use the latest offline version of cppreference.

[merge_guards_bot]

Unit tests: pass. 62202 tests passed, 0 failed and 815 were skipped.

clang-tidy: fail. clang-tidy found 15 errors and 0 warnings. 15 of them are added as review comments below (why?).

clang-format: pass.

Build artifacts: diff.json, clang-tidy.txt, clang-format.patch, CMakeCache.txt, console-log.txt, test-results.xml

Pre-merge checks is in beta. Report issue. Please join beta or enable it for your project.

[kadircet]

we seem to be missing some symbols now, like polymorphic_allocator random_shuffle gets etc. and there seems to be a functional change to the parser. Are they intentional, if so why?

[hokein]

refine the code to avoid confusion.

[hokein]

In D73451#1841510, @kadircet wrote:

we seem to be missing some symbols now, like polymorphic_allocator random_shuffle gets etc.

yeap, two majoir reasons:

• some symbols are deprecated/removed in new C++ standard, e.g. random_shuffle is removed in C++17
• missing information in cppreference page, e.g. there is no header section for polymorphic_allocator in the offline cppreference page :(

Regarding those deprecated symbols, we could handle them according to which C++ standard we are using, as we have enough information from cppreferences, but it needs some work, and is low priority.

and there seems to be a functional change to the parser. Are they intentional, if so why?

The change should be NFC, it just makes the parser more robust on invalid links, the new version of the cppreference have invalid links on the symbol index page.
updated the code to make it clearer.

[merge_guards_bot]

Unit tests: pass. 62202 tests passed, 0 failed and 815 were skipped.

clang-tidy: fail. clang-tidy found 15 errors and 0 warnings. 15 of them are added as review comments below (why?).

clang-format: pass.

Build artifacts: diff.json, clang-tidy.txt, clang-format.patch, CMakeCache.txt, console-log.txt, test-results.xml

Pre-merge checks is in beta. Report issue. Please join beta or enable it for your project.

[kadircet]

In D73451#1841595, @hokein wrote:

In D73451#1841510, @kadircet wrote:

we seem to be missing some symbols now, like polymorphic_allocator random_shuffle gets etc.

yeap, two majoir reasons:

• some symbols are deprecated/removed in new C++ standard, e.g. random_shuffle is removed in C++17
• missing information in cppreference page, e.g. there is no header section for polymorphic_allocator in the offline cppreference page :(

Regarding those deprecated symbols, we could handle them according to which C++ standard we are using, as we have enough information from cppreferences, but it needs some work, and is low priority.

Ah I see, it is sad that cppreference just deletes those from symbol index, instead of marking them as delete after c++XX, I am not sure when the symbols introduced by this patch are added(but it is likely that they are introduced with c++20), so I think losing existing symbols
has a worse effect than not having information regarding c++20 symbols. Because these are symbols that are likely to be used by current c++ developers and supported by clangd, and it will be a regression to drop those, whereas the newly introduced symbols are already
missing.

So maybe postpone this update until we implement parsing of zombie_names page as well, also please file a bug either way so that we don't lose track.

and there seems to be a functional change to the parser. Are they intentional, if so why?

The change should be NFC, it just makes the parser more robust on invalid links, the new version of the cppreference have invalid links on the symbol index page.
updated the code to make it clearer.

maybe separate that out into a different patch so that it stands out?

clang-tools-extra/clangd/CSymbolMap.inc

 //===-- gen_std.py generated file -------------------------------*- C++ -*-===//
 //
 // Used to build a lookup table (qualified names => include headers) for C
 // Standard Library symbols.
 //
 // Automatically generated file, DO NOT EDIT!
 //
-// Generated from cppreference offline HTML book (modified on 2018-10-28).
+// Generated from cppreference offline HTML book (modified on 2019-06-07).
 //===----------------------------------------------------------------------===//
 
 SYMBOL(ATOMIC_BOOL_LOCK_FREE, None, <stdatomic.h>)
 SYMBOL(ATOMIC_CHAR16_T_LOCK_FREE, None, <stdatomic.h>)
 SYMBOL(ATOMIC_CHAR32_T_LOCK_FREE, None, <stdatomic.h>)
 SYMBOL(ATOMIC_CHAR_LOCK_FREE, None, <stdatomic.h>)
 SYMBOL(ATOMIC_FLAG_INIT, None, <stdatomic.h>)
 SYMBOL(ATOMIC_INT_LOCK_FREE, None, <stdatomic.h>)
 SYMBOL(ATOMIC_LLONG_LOCK_FREE, None, <stdatomic.h>)
 SYMBOL(ATOMIC_LONG_LOGK_FREE, None, <stdatomic.h>)
 SYMBOL(ATOMIC_POINTER_LOCK_FREE, None, <stdatomic.h>)

 SYMBOL(UINT_LEAST64_MAX, None, <stdint.h>)
 SYMBOL(UINT_LEAST8_MAX, None, <stdint.h>)
 SYMBOL(UINT_MAX, None, <limits.h>)
 SYMBOL(ULLONG_MAX, None, <limits.h>)
 SYMBOL(ULONG_MAX, None, <limits.h>)
 SYMBOL(USHRT_MAX, None, <limits.h>)
 SYMBOL(WCHAR_MAX, None, <wchar.h>)
 SYMBOL(WCHAR_MIN, None, <wchar.h>)
-SYMBOL(WEOF, None, <wchar.h>)
 SYMBOL(WINT_MAX, None, <stdint.h>)
 SYMBOL(WINT_MIN, None, <stdint.h>)
 SYMBOL(_Complex_I, None, <complex.h>)
 SYMBOL(_IOFBF, None, <stdio.h>)
 SYMBOL(_IOLBF, None, <stdio.h>)
 SYMBOL(_IONBF, None, <stdio.h>)
 SYMBOL(_Imaginary_I, None, <complex.h>)
 SYMBOL(__alignas_is_defined, None, <stdalign.h>)

 SYMBOL(vswprintf, None, <wchar.h>)
 SYMBOL(vswprintf_s, None, <wchar.h>)
 SYMBOL(vswscanf, None, <wchar.h>)
 SYMBOL(vswscanf_s, None, <wchar.h>)
 SYMBOL(vwprintf, None, <wchar.h>)
 SYMBOL(vwprintf_s, None, <wchar.h>)
 SYMBOL(vwscanf, None, <wchar.h>)
 SYMBOL(vwscanf_s, None, <wchar.h>)
-SYMBOL(wchar_t, None, <wchar.h>)
 SYMBOL(wcrtomb, None, <wchar.h>)
 SYMBOL(wcrtomb_s, None, <wchar.h>)
 SYMBOL(wcscat, None, <wchar.h>)
 SYMBOL(wcscat_s, None, <wchar.h>)
 SYMBOL(wcschr, None, <wchar.h>)
 SYMBOL(wcscmp, None, <wchar.h>)
 SYMBOL(wcscoll, None, <wchar.h>)
 SYMBOL(wcscpy, None, <wchar.h>)

clang-tools-extra/clangd/StdSymbolMap.inc

 //===-- gen_std.py generated file -------------------------------*- C++ -*-===//
 //
 // Used to build a lookup table (qualified names => include headers) for CPP
 // Standard Library symbols.
 //
 // Automatically generated file, DO NOT EDIT!
 //
-// Generated from cppreference offline HTML book (modified on 2018-10-28).
+// Generated from cppreference offline HTML book (modified on 2019-06-07).
 //===----------------------------------------------------------------------===//
 
 SYMBOL(Assignable, std::, <concepts>)
 SYMBOL(Boolean, std::, <concepts>)
 SYMBOL(Common, std::, <concepts>)
 SYMBOL(CommonReference, std::, <concepts>)
 SYMBOL(Constructible, std::, <concepts>)
 SYMBOL(ConvertibleTo, std::, <concepts>)
 SYMBOL(CopyConstructible, std::, <concepts>)
 SYMBOL(Copyable, std::, <concepts>)
 SYMBOL(DefaultConstructible, std::, <concepts>)

 SYMBOL(StrictWeakOrder, std::, <concepts>)
 SYMBOL(Swappable, std::, <concepts>)
 SYMBOL(SwappableWith, std::, <concepts>)
 SYMBOL(UniformRandomBitGenerator, std::, <random>)
 SYMBOL(UnsignedIntegral, std::, <concepts>)
 SYMBOL(_Exit, std::, <cstdlib>)
 SYMBOL(accumulate, std::, <numeric>)
 SYMBOL(acos, std::, <cmath>)
+SYMBOL(acosf, std::, <cmath>)
 SYMBOL(acosh, std::, <cmath>)
+SYMBOL(acoshf, std::, <cmath>)
+SYMBOL(acoshl, std::, <cmath>)
+SYMBOL(acosl, std::, <cmath>)
 SYMBOL(add_const, std::, <type_traits>)
 SYMBOL(add_const_t, std::, <type_traits>)
 SYMBOL(add_cv, std::, <type_traits>)
 SYMBOL(add_cv_t, std::, <type_traits>)
 SYMBOL(add_lvalue_reference, std::, <type_traits>)
 SYMBOL(add_lvalue_reference_t, std::, <type_traits>)
 SYMBOL(add_pointer, std::, <type_traits>)
 SYMBOL(add_pointer_t, std::, <type_traits>)

 SYMBOL(aligned_storage, std::, <type_traits>)
 SYMBOL(aligned_storage_t, std::, <type_traits>)
 SYMBOL(aligned_union, std::, <type_traits>)
 SYMBOL(aligned_union_t, std::, <type_traits>)
 SYMBOL(alignment_of, std::, <type_traits>)
 SYMBOL(alignment_of_v, std::, <type_traits>)
 SYMBOL(all_of, std::, <algorithm>)
 SYMBOL(allocate_shared, std::, <memory>)
+SYMBOL(allocate_shared_default_init, std::, <memory>)
 SYMBOL(allocator, std::, <memory>)
 SYMBOL(allocator_arg, std::, <memory>)
 SYMBOL(allocator_arg_t, std::, <memory>)
 SYMBOL(allocator_traits, std::, <memory>)
 SYMBOL(any, std::, <any>)
 SYMBOL(any_of, std::, <algorithm>)
 SYMBOL(apply, std::, <tuple>)
 SYMBOL(arg, std::, <complex>)
 SYMBOL(array, std::, <array>)
 SYMBOL(as_const, std::, <utility>)
 SYMBOL(asctime, std::, <ctime>)
 SYMBOL(asin, std::, <cmath>)
+SYMBOL(asinf, std::, <cmath>)
 SYMBOL(asinh, std::, <cmath>)
+SYMBOL(asinhf, std::, <cmath>)
+SYMBOL(asinhl, std::, <cmath>)
+SYMBOL(asinl, std::, <cmath>)
+SYMBOL(assume_aligned, std::, <memory>)
 SYMBOL(async, std::, <future>)
 SYMBOL(at_quick_exit, std::, <cstdlib>)
 SYMBOL(atan, std::, <cmath>)
 SYMBOL(atan2, std::, <cmath>)
+SYMBOL(atan2f, std::, <cmath>)
+SYMBOL(atan2l, std::, <cmath>)
+SYMBOL(atanf, std::, <cmath>)
 SYMBOL(atanh, std::, <cmath>)
+SYMBOL(atanhf, std::, <cmath>)
+SYMBOL(atanhl, std::, <cmath>)
+SYMBOL(atanl, std::, <cmath>)
 SYMBOL(atexit, std::, <cstdlib>)
 SYMBOL(atof, std::, <cstdlib>)
 SYMBOL(atoi, std::, <cstdlib>)
 SYMBOL(atol, std::, <cstdlib>)
 SYMBOL(atoll, std::, <cstdlib>)
 SYMBOL(atomic_compare_exchange_strong, std::, <atomic>)
 SYMBOL(atomic_compare_exchange_strong_explicit, std::, <atomic>)
 SYMBOL(atomic_compare_exchange_weak, std::, <atomic>)

 SYMBOL(atomic_load, std::, <atomic>)
 SYMBOL(atomic_load_explicit, std::, <atomic>)
 SYMBOL(atomic_ref, std::, <atomic>)
 SYMBOL(atomic_signal_fence, std::, <atomic>)
 SYMBOL(atomic_store, std::, <atomic>)
 SYMBOL(atomic_store_explicit, std::, <atomic>)
 SYMBOL(atomic_thread_fence, std::, <atomic>)
 SYMBOL(atto, std::, <ratio>)
-SYMBOL(auto_ptr, std::, <memory>)
 SYMBOL(back_insert_iterator, std::, <iterator>)
 SYMBOL(back_inserter, std::, <iterator>)
 SYMBOL(bad_alloc, std::, <new>)
 SYMBOL(bad_any_cast, std::, <any>)
 SYMBOL(bad_array_new_length, std::, <new>)
 SYMBOL(bad_cast, std::, <typeinfo>)
 SYMBOL(bad_exception, std::, <exception>)
 SYMBOL(bad_function_call, std::, <functional>)

 SYMBOL(basic_stringbuf, std::, <sstream>)
 SYMBOL(basic_stringstream, std::, <sstream>)
 SYMBOL(basic_syncbuf, std::, <syncstream>)
 SYMBOL(begin, std::, <iterator>)
 SYMBOL(bernoulli_distribution, std::, <random>)
 SYMBOL(bidirectional_iterator_tag, std::, <iterator>)
 SYMBOL(binary_search, std::, <algorithm>)
 SYMBOL(bind, std::, <functional>)
+SYMBOL(bind_front, std::, <functional>)
 SYMBOL(binomial_distribution, std::, <random>)
 SYMBOL(bit_and, std::, <functional>)
 SYMBOL(bit_cast, std::, <bit>)
 SYMBOL(bit_not, std::, <functional>)
 SYMBOL(bit_or, std::, <functional>)
 SYMBOL(bit_xor, std::, <functional>)
 SYMBOL(bitset, std::, <bitset>)
 SYMBOL(bool_constant, std::, <type_traits>)
 SYMBOL(boolalpha, std::, <ios>)
 SYMBOL(boyer_moore_horspool_searcher, std::, <functional>)
 SYMBOL(boyer_moore_searcher, std::, <functional>)
 SYMBOL(bsearch, std::, <cstdlib>)
 SYMBOL(btowc, std::, <cwchar>)
 SYMBOL(byte, std::, <cstddef>)
 SYMBOL(c16rtomb, std::, <cuchar>)
 SYMBOL(c32rtomb, std::, <cuchar>)
+SYMBOL(c8rtomb, std::, <cuchar>)
 SYMBOL(call_once, std::, <mutex>)
 SYMBOL(calloc, std::, <cstdlib>)
 SYMBOL(cauchy_distribution, std::, <random>)
 SYMBOL(cbegin, std::, <iterator>)
 SYMBOL(cbrt, std::, <cmath>)
+SYMBOL(cbrtf, std::, <cmath>)
+SYMBOL(cbrtl, std::, <cmath>)
 SYMBOL(ceil, std::, <cmath>)
 SYMBOL(ceil2, std::, <bit>)
+SYMBOL(ceilf, std::, <cmath>)
+SYMBOL(ceill, std::, <cmath>)
 SYMBOL(cend, std::, <iterator>)
 SYMBOL(centi, std::, <ratio>)
 SYMBOL(cerr, std::, <iostream>)
 SYMBOL(char_traits, std::, <string>)
 SYMBOL(chars_format, std::, <charconv>)
 SYMBOL(chi_squared_distribution, std::, <random>)
 SYMBOL(cin, std::, <iostream>)
 SYMBOL(clamp, std::, <algorithm>)

 SYMBOL(condition_variable, std::, <condition_variable>)
 SYMBOL(condition_variable_any, std::, <condition_variable>)
 SYMBOL(conditional, std::, <type_traits>)
 SYMBOL(conditional_t, std::, <type_traits>)
 SYMBOL(conj, std::, <complex>)
 SYMBOL(conjunction, std::, <type_traits>)
 SYMBOL(conjunction_v, std::, <type_traits>)
 SYMBOL(const_pointer_cast, std::, <memory>)
+SYMBOL(contiguous_iterator_tag, std::, <iterator>)
 SYMBOL(contract_violation, std::, <contract>)
 SYMBOL(copy, std::, <algorithm>)
 SYMBOL(copy_backward, std::, <algorithm>)
 SYMBOL(copy_if, std::, <algorithm>)
 SYMBOL(copy_n, std::, <algorithm>)
 SYMBOL(copysign, std::, <cmath>)
+SYMBOL(copysignf, std::, <cmath>)
+SYMBOL(copysignl, std::, <cmath>)
 SYMBOL(cos, std::, <cmath>)
+SYMBOL(cosf, std::, <cmath>)
 SYMBOL(cosh, std::, <cmath>)
+SYMBOL(coshf, std::, <cmath>)
+SYMBOL(coshl, std::, <cmath>)
+SYMBOL(cosl, std::, <cmath>)
 SYMBOL(count, std::, <algorithm>)
 SYMBOL(count_if, std::, <algorithm>)
 SYMBOL(cout, std::, <iostream>)
 SYMBOL(crbegin, std::, <iterator>)
 SYMBOL(cref, std::, <functional>)
 SYMBOL(cregex_iterator, std::, <regex>)
 SYMBOL(cregex_token_iterator, std::, <regex>)
 SYMBOL(crend, std::, <iterator>)

 SYMBOL(enable_shared_from_this, std::, <memory>)
 SYMBOL(end, std::, <iterator>)
 SYMBOL(endian, std::, <type_traits>)
 SYMBOL(endl, std::, <ostream>)
 SYMBOL(ends, std::, <ostream>)
 SYMBOL(equal, std::, <algorithm>)
 SYMBOL(equal_range, std::, <algorithm>)
 SYMBOL(equal_to, std::, <functional>)
+SYMBOL(erase, std::, <vector>)
+SYMBOL(erase_if, std::, <vector>)
 SYMBOL(erf, std::, <cmath>)
 SYMBOL(erfc, std::, <cmath>)
+SYMBOL(erfcf, std::, <cmath>)
+SYMBOL(erfcl, std::, <cmath>)
+SYMBOL(erff, std::, <cmath>)
+SYMBOL(erfl, std::, <cmath>)
 SYMBOL(errc, std::, <system_error>)
 SYMBOL(error_category, std::, <system_error>)
 SYMBOL(error_code, std::, <system_error>)
 SYMBOL(error_condition, std::, <system_error>)
 SYMBOL(exa, std::, <ratio>)
 SYMBOL(exception, std::, <exception>)
 SYMBOL(exception_ptr, std::, <exception>)
 SYMBOL(exchange, std::, <utility>)
 SYMBOL(exclusive_scan, std::, <numeric>)
 SYMBOL(exit, std::, <cstdlib>)
 SYMBOL(exp, std::, <cmath>)
 SYMBOL(exp2, std::, <cmath>)
+SYMBOL(exp2f, std::, <cmath>)
+SYMBOL(exp2l, std::, <cmath>)
+SYMBOL(expf, std::, <cmath>)
+SYMBOL(expl, std::, <cmath>)
 SYMBOL(expm1, std::, <cmath>)
+SYMBOL(expm1f, std::, <cmath>)
+SYMBOL(expm1l, std::, <cmath>)
 SYMBOL(exponential_distribution, std::, <random>)
 SYMBOL(extent, std::, <type_traits>)
 SYMBOL(extent_v, std::, <type_traits>)
 SYMBOL(extreme_value_distribution, std::, <random>)
+SYMBOL(fabs, std::, <cmath>)
+SYMBOL(fabsf, std::, <cmath>)
+SYMBOL(fabsl, std::, <cmath>)
 SYMBOL(false_type, std::, <type_traits>)
 SYMBOL(fclose, std::, <cstdio>)
 SYMBOL(fdim, std::, <cmath>)
+SYMBOL(fdimf, std::, <cmath>)
+SYMBOL(fdiml, std::, <cmath>)
 SYMBOL(feclearexcept, std::, <cfenv>)
 SYMBOL(fegetenv, std::, <cfenv>)
 SYMBOL(fegetexceptflag, std::, <cfenv>)
 SYMBOL(fegetround, std::, <cfenv>)
 SYMBOL(feholdexcept, std::, <cfenv>)
 SYMBOL(femto, std::, <ratio>)
 SYMBOL(fenv_t, std::, <cfenv>)
 SYMBOL(feof, std::, <cstdio>)

 SYMBOL(find_if_not, std::, <algorithm>)
 SYMBOL(fisher_f_distribution, std::, <random>)
 SYMBOL(fixed, std::, <ios>)
 SYMBOL(float_denorm_style, std::, <limits>)
 SYMBOL(float_round_style, std::, <limits>)
 SYMBOL(float_t, std::, <cmath>)
 SYMBOL(floor, std::, <cmath>)
 SYMBOL(floor2, std::, <bit>)
+SYMBOL(floorf, std::, <cmath>)
+SYMBOL(floorl, std::, <cmath>)
 SYMBOL(flush, std::, <ostream>)
 SYMBOL(flush_emit, std::, <ostream>)
 SYMBOL(fma, std::, <cmath>)
+SYMBOL(fmaf, std::, <cmath>)
+SYMBOL(fmal, std::, <cmath>)
 SYMBOL(fmax, std::, <cmath>)
+SYMBOL(fmaxf, std::, <cmath>)
+SYMBOL(fmaxl, std::, <cmath>)
 SYMBOL(fmin, std::, <cmath>)
+SYMBOL(fminf, std::, <cmath>)
+SYMBOL(fminl, std::, <cmath>)
 SYMBOL(fmod, std::, <cmath>)
+SYMBOL(fmodf, std::, <cmath>)
+SYMBOL(fmodl, std::, <cmath>)
 SYMBOL(fopen, std::, <cstdio>)
 SYMBOL(for_each, std::, <algorithm>)
 SYMBOL(for_each_n, std::, <algorithm>)
 SYMBOL(forward, std::, <utility>)
 SYMBOL(forward_as_tuple, std::, <tuple>)
 SYMBOL(forward_iterator_tag, std::, <iterator>)
 SYMBOL(forward_list, std::, <forward_list>)
 SYMBOL(fpclassify, std::, <cmath>)
 SYMBOL(fpos, std::, <ios>)
 SYMBOL(fpos_t, std::, <cstdio>)
 SYMBOL(fprintf, std::, <cstdio>)
 SYMBOL(fputc, std::, <cstdio>)
 SYMBOL(fputs, std::, <cstdio>)
 SYMBOL(fputwc, std::, <cwchar>)
 SYMBOL(fputws, std::, <cwchar>)
 SYMBOL(fread, std::, <cstdio>)
 SYMBOL(free, std::, <cstdlib>)
 SYMBOL(freopen, std::, <cstdio>)
 SYMBOL(frexp, std::, <cmath>)
+SYMBOL(frexpf, std::, <cmath>)
+SYMBOL(frexpl, std::, <cmath>)
 SYMBOL(from_chars, std::, <charconv>)
 SYMBOL(front_insert_iterator, std::, <iterator>)
 SYMBOL(front_inserter, std::, <iterator>)
 SYMBOL(fscanf, std::, <cstdio>)
 SYMBOL(fseek, std::, <cstdio>)
 SYMBOL(fsetpos, std::, <cstdio>)
 SYMBOL(fstream, std::, <fstream>)
 SYMBOL(ftell, std::, <cstdio>)

 SYMBOL(get_money, std::, <iomanip>)
 SYMBOL(get_new_handler, std::, <new>)
 SYMBOL(get_pointer_safety, std::, <memory>)
 SYMBOL(get_terminate, std::, <exception>)
 SYMBOL(get_time, std::, <iomanip>)
 SYMBOL(getc, std::, <cstdio>)
 SYMBOL(getchar, std::, <cstdio>)
 SYMBOL(getenv, std::, <cstdlib>)
-SYMBOL(gets, std::, <cstdio>)
 SYMBOL(getwc, std::, <cwchar>)
 SYMBOL(getwchar, std::, <cwchar>)
 SYMBOL(giga, std::, <ratio>)
 SYMBOL(gmtime, std::, <ctime>)
 SYMBOL(greater, std::, <functional>)
 SYMBOL(greater_equal, std::, <functional>)
 SYMBOL(gslice, std::, <valarray>)
 SYMBOL(gslice_array, std::, <valarray>)
 SYMBOL(hardware_constructive_interference_size, std::, <new>)
 SYMBOL(hardware_destructive_interference_size, std::, <new>)
 SYMBOL(has_facet, std::, <locale>)
 SYMBOL(has_unique_object_representations, std::, <type_traits>)
 SYMBOL(has_unique_object_representations_v, std::, <type_traits>)
 SYMBOL(has_virtual_destructor, std::, <type_traits>)
 SYMBOL(has_virtual_destructor_v, std::, <type_traits>)
 SYMBOL(hash, std::, <functional>)
 SYMBOL(hecto, std::, <ratio>)
 SYMBOL(hex, std::, <ios>)
 SYMBOL(hexfloat, std::, <ios>)
 SYMBOL(holds_alternative, std::, <variant>)
 SYMBOL(hypot, std::, <cmath>)
+SYMBOL(hypotf, std::, <cmath>)
+SYMBOL(hypotl, std::, <cmath>)
 SYMBOL(identity, std::, <functional>)
 SYMBOL(ifstream, std::, <fstream>)
 SYMBOL(ignore, std::, <tuple>)
 SYMBOL(ilogb, std::, <cmath>)
+SYMBOL(ilogbf, std::, <cmath>)
+SYMBOL(ilogbl, std::, <cmath>)
 SYMBOL(imag, std::, <complex>)
 SYMBOL(imaxabs, std::, <cinttypes>)
 SYMBOL(imaxdiv, std::, <cinttypes>)
 SYMBOL(imaxdiv_t, std::, <cinttypes>)
 SYMBOL(in_place, std::, <utility>)
 SYMBOL(in_place_index, std::, <utility>)
 SYMBOL(in_place_index_t, std::, <utility>)
 SYMBOL(in_place_t, std::, <utility>)
 SYMBOL(in_place_type, std::, <utility>)
 SYMBOL(in_place_type_t, std::, <utility>)
 SYMBOL(includes, std::, <algorithm>)
 SYMBOL(inclusive_scan, std::, <numeric>)
+SYMBOL(incrementable_traits, std::, <iterator>)
 SYMBOL(independent_bits_engine, std::, <random>)
 SYMBOL(indirect_array, std::, <valarray>)
 SYMBOL(initializer_list, std::, <initializer_list>)
 SYMBOL(inner_product, std::, <numeric>)
 SYMBOL(inplace_merge, std::, <algorithm>)
 SYMBOL(input_iterator_tag, std::, <iterator>)
 SYMBOL(insert_iterator, std::, <iterator>)
 SYMBOL(inserter, std::, <iterator>)

 SYMBOL(is_array, std::, <type_traits>)
 SYMBOL(is_array_v, std::, <type_traits>)
 SYMBOL(is_assignable, std::, <type_traits>)
 SYMBOL(is_assignable_v, std::, <type_traits>)
 SYMBOL(is_base_of, std::, <type_traits>)
 SYMBOL(is_base_of_v, std::, <type_traits>)
 SYMBOL(is_bind_expression, std::, <functional>)
 SYMBOL(is_bind_expression_v, std::, <functional>)
+SYMBOL(is_bounded_array, std::, <type_traits>)
+SYMBOL(is_bounded_array_v, std::, <type_traits>)
 SYMBOL(is_class, std::, <type_traits>)
 SYMBOL(is_class_v, std::, <type_traits>)
 SYMBOL(is_compound, std::, <type_traits>)
 SYMBOL(is_compound_v, std::, <type_traits>)
 SYMBOL(is_const, std::, <type_traits>)
 SYMBOL(is_const_v, std::, <type_traits>)
+SYMBOL(is_constant_evaluated, std::, <type_traits>)
 SYMBOL(is_constructible, std::, <type_traits>)
 SYMBOL(is_constructible_v, std::, <type_traits>)
 SYMBOL(is_convertible, std::, <type_traits>)
 SYMBOL(is_convertible_v, std::, <type_traits>)
 SYMBOL(is_copy_assignable, std::, <type_traits>)
 SYMBOL(is_copy_assignable_v, std::, <type_traits>)
 SYMBOL(is_copy_constructible, std::, <type_traits>)
 SYMBOL(is_copy_constructible_v, std::, <type_traits>)

 SYMBOL(is_move_assignable_v, std::, <type_traits>)
 SYMBOL(is_move_constructible, std::, <type_traits>)
 SYMBOL(is_move_constructible_v, std::, <type_traits>)
 SYMBOL(is_neq, std::, <compare>)
 SYMBOL(is_nothrow_assignable, std::, <type_traits>)
 SYMBOL(is_nothrow_assignable_v, std::, <type_traits>)
 SYMBOL(is_nothrow_constructible, std::, <type_traits>)
 SYMBOL(is_nothrow_constructible_v, std::, <type_traits>)
+SYMBOL(is_nothrow_convertible, std::, <type_traits>)
+SYMBOL(is_nothrow_convertible_v, std::, <type_traits>)
 SYMBOL(is_nothrow_copy_assignable, std::, <type_traits>)
 SYMBOL(is_nothrow_copy_assignable_v, std::, <type_traits>)
 SYMBOL(is_nothrow_copy_constructible, std::, <type_traits>)
 SYMBOL(is_nothrow_copy_constructible_v, std::, <type_traits>)
 SYMBOL(is_nothrow_default_constructible, std::, <type_traits>)
 SYMBOL(is_nothrow_default_constructible_v, std::, <type_traits>)
 SYMBOL(is_nothrow_destructible, std::, <type_traits>)
 SYMBOL(is_nothrow_destructible_v, std::, <type_traits>)

 SYMBOL(is_trivially_default_constructible, std::, <type_traits>)
 SYMBOL(is_trivially_default_constructible_v, std::, <type_traits>)
 SYMBOL(is_trivially_destructible, std::, <type_traits>)
 SYMBOL(is_trivially_destructible_v, std::, <type_traits>)
 SYMBOL(is_trivially_move_assignable, std::, <type_traits>)
 SYMBOL(is_trivially_move_assignable_v, std::, <type_traits>)
 SYMBOL(is_trivially_move_constructible, std::, <type_traits>)
 SYMBOL(is_trivially_move_constructible_v, std::, <type_traits>)
+SYMBOL(is_unbounded_array, std::, <type_traits>)
+SYMBOL(is_unbounded_array_v, std::, <type_traits>)
 SYMBOL(is_union, std::, <type_traits>)
 SYMBOL(is_union_v, std::, <type_traits>)
 SYMBOL(is_unsigned, std::, <type_traits>)
 SYMBOL(is_unsigned_v, std::, <type_traits>)
 SYMBOL(is_void, std::, <type_traits>)
 SYMBOL(is_void_v, std::, <type_traits>)
 SYMBOL(is_volatile, std::, <type_traits>)
 SYMBOL(is_volatile_v, std::, <type_traits>)

 SYMBOL(ispow2, std::, <bit>)
 SYMBOL(isprint, std::, <cctype>)
 SYMBOL(ispunct, std::, <cctype>)
 SYMBOL(isspace, std::, <cctype>)
 SYMBOL(istream, std::, <istream>)
 SYMBOL(istream_iterator, std::, <iterator>)
 SYMBOL(istreambuf_iterator, std::, <iterator>)
 SYMBOL(istringstream, std::, <sstream>)
+SYMBOL(istrstream, std::, <strstream>)
 SYMBOL(isunordered, std::, <cmath>)
 SYMBOL(isupper, std::, <cctype>)
 SYMBOL(iswalnum, std::, <cwctype>)
 SYMBOL(iswalpha, std::, <cwctype>)
 SYMBOL(iswblank, std::, <cwctype>)
 SYMBOL(iswcntrl, std::, <cwctype>)
 SYMBOL(iswctype, std::, <cwctype>)
 SYMBOL(iswdigit, std::, <cwctype>)
 SYMBOL(iswgraph, std::, <cwctype>)
 SYMBOL(iswlower, std::, <cwctype>)
 SYMBOL(iswprint, std::, <cwctype>)
 SYMBOL(iswpunct, std::, <cwctype>)
 SYMBOL(iswspace, std::, <cwctype>)
 SYMBOL(iswupper, std::, <cwctype>)
 SYMBOL(iswxdigit, std::, <cwctype>)
 SYMBOL(isxdigit, std::, <cctype>)
+SYMBOL(iter_common_reference_t, std::, <iterator>)
+SYMBOL(iter_difference_t, std::, <iterator>)
+SYMBOL(iter_reference_t, std::, <iterator>)
+SYMBOL(iter_rvalue_reference_t, std::, <iterator>)
 SYMBOL(iter_swap, std::, <algorithm>)
+SYMBOL(iter_value_t, std::, <iterator>)
 SYMBOL(iterator, std::, <iterator>)
 SYMBOL(iterator_traits, std::, <iterator>)
 SYMBOL(jmp_buf, std::, <csetjmp>)
 SYMBOL(kill_dependency, std::, <atomic>)
 SYMBOL(kilo, std::, <ratio>)
 SYMBOL(knuth_b, std::, <random>)
 SYMBOL(labs, std::, <cstdlib>)
 SYMBOL(launch, std::, <future>)
 SYMBOL(launder, std::, <new>)
 SYMBOL(lcm, std::, <numeric>)
 SYMBOL(lconv, std::, <clocale>)
 SYMBOL(ldexp, std::, <cmath>)
+SYMBOL(ldexpf, std::, <cmath>)
+SYMBOL(ldexpl, std::, <cmath>)
 SYMBOL(ldiv, std::, <cstdlib>)
 SYMBOL(ldiv_t, std::, <cstdlib>)
 SYMBOL(left, std::, <ios>)
 SYMBOL(length_error, std::, <stdexcept>)
+SYMBOL(lerp, std::, <cmath>)
 SYMBOL(less, std::, <functional>)
 SYMBOL(less_equal, std::, <functional>)
 SYMBOL(lexicographical_compare, std::, <algorithm>)
 SYMBOL(lexicographical_compare_3way, std::, <algorithm>)
 SYMBOL(lgamma, std::, <cmath>)
+SYMBOL(lgammaf, std::, <cmath>)
+SYMBOL(lgammal, std::, <cmath>)
 SYMBOL(linear_congruential_engine, std::, <random>)
 SYMBOL(list, std::, <list>)
 SYMBOL(llabs, std::, <cstdlib>)
 SYMBOL(lldiv, std::, <cstdlib>)
 SYMBOL(lldiv_t, std::, <cstdlib>)
 SYMBOL(llrint, std::, <cmath>)
+SYMBOL(llrintf, std::, <cmath>)
+SYMBOL(llrintl, std::, <cmath>)
 SYMBOL(llround, std::, <cmath>)
+SYMBOL(llroundf, std::, <cmath>)
+SYMBOL(llroundl, std::, <cmath>)
 SYMBOL(locale, std::, <locale>)
 SYMBOL(localeconv, std::, <clocale>)
 SYMBOL(localtime, std::, <ctime>)
 SYMBOL(lock, std::, <mutex>)
 SYMBOL(lock_guard, std::, <mutex>)
 SYMBOL(log, std::, <cmath>)
 SYMBOL(log10, std::, <cmath>)
+SYMBOL(log10f, std::, <cmath>)
+SYMBOL(log10l, std::, <cmath>)
 SYMBOL(log1p, std::, <cmath>)
+SYMBOL(log1pf, std::, <cmath>)
+SYMBOL(log1pl, std::, <cmath>)
 SYMBOL(log2, std::, <cmath>)
+SYMBOL(log2f, std::, <cmath>)
+SYMBOL(log2l, std::, <cmath>)
 SYMBOL(log2p1, std::, <bit>)
 SYMBOL(logb, std::, <cmath>)
+SYMBOL(logbf, std::, <cmath>)
+SYMBOL(logbl, std::, <cmath>)
+SYMBOL(logf, std::, <cmath>)
 SYMBOL(logic_error, std::, <stdexcept>)
 SYMBOL(logical_and, std::, <functional>)
 SYMBOL(logical_not, std::, <functional>)
 SYMBOL(logical_or, std::, <functional>)
+SYMBOL(logl, std::, <cmath>)
 SYMBOL(lognormal_distribution, std::, <random>)
 SYMBOL(longjmp, std::, <csetjmp>)
 SYMBOL(lower_bound, std::, <algorithm>)
 SYMBOL(lrint, std::, <cmath>)
+SYMBOL(lrintf, std::, <cmath>)
+SYMBOL(lrintl, std::, <cmath>)
 SYMBOL(lround, std::, <cmath>)
+SYMBOL(lroundf, std::, <cmath>)
+SYMBOL(lroundl, std::, <cmath>)
 SYMBOL(make_exception_ptr, std::, <exception>)
 SYMBOL(make_from_tuple, std::, <tuple>)
 SYMBOL(make_heap, std::, <algorithm>)
 SYMBOL(make_move_iterator, std::, <iterator>)
+SYMBOL(make_obj_using_allocator, std::, <memory>)
 SYMBOL(make_optional, std::, <optional>)
 SYMBOL(make_pair, std::, <utility>)
 SYMBOL(make_reverse_iterator, std::, <iterator>)
 SYMBOL(make_shared, std::, <memory>)
+SYMBOL(make_shared_default_init, std::, <memory>)
 SYMBOL(make_signed, std::, <type_traits>)
 SYMBOL(make_signed_t, std::, <type_traits>)
 SYMBOL(make_tuple, std::, <tuple>)
 SYMBOL(make_unique, std::, <memory>)
+SYMBOL(make_unique_default_init, std::, <memory>)
 SYMBOL(make_unsigned, std::, <type_traits>)
 SYMBOL(make_unsigned_t, std::, <type_traits>)
 SYMBOL(malloc, std::, <cstdlib>)
 SYMBOL(map, std::, <map>)
 SYMBOL(mask_array, std::, <valarray>)
 SYMBOL(match_results, std::, <regex>)
 SYMBOL(max, std::, <algorithm>)
 SYMBOL(max_align_t, std::, <cstddef>)
 SYMBOL(max_element, std::, <algorithm>)
 SYMBOL(mblen, std::, <cstdlib>)
 SYMBOL(mbrlen, std::, <cwchar>)
 SYMBOL(mbrtoc16, std::, <cuchar>)
 SYMBOL(mbrtoc32, std::, <cuchar>)
+SYMBOL(mbrtoc8, std::, <cuchar>)
 SYMBOL(mbrtowc, std::, <cwchar>)
 SYMBOL(mbsinit, std::, <cwchar>)
 SYMBOL(mbsrtowcs, std::, <cwchar>)
 SYMBOL(mbstowcs, std::, <cstdlib>)
 SYMBOL(mbtowc, std::, <cstdlib>)
 SYMBOL(mega, std::, <ratio>)
 SYMBOL(mem_fn, std::, <functional>)
 SYMBOL(memchr, std::, <cstring>)

 SYMBOL(memory_order_seq_cst, std::, <atomic>)
 SYMBOL(memset, std::, <cstring>)
 SYMBOL(merge, std::, <algorithm>)
 SYMBOL(mersenne_twister_engine, std::, <random>)
 SYMBOL(messages, std::, <locale>)
 SYMBOL(messages_base, std::, <locale>)
 SYMBOL(messages_byname, std::, <locale>)
 SYMBOL(micro, std::, <ratio>)
+SYMBOL(midpoint, std::, <numeric>)
 SYMBOL(milli, std::, <ratio>)
 SYMBOL(min, std::, <algorithm>)
 SYMBOL(min_element, std::, <algorithm>)
 SYMBOL(minmax, std::, <algorithm>)
 SYMBOL(minmax_element, std::, <algorithm>)
 SYMBOL(minstd_rand, std::, <random>)
 SYMBOL(minstd_rand0, std::, <random>)
 SYMBOL(minus, std::, <functional>)
 SYMBOL(mismatch, std::, <algorithm>)
 SYMBOL(mktime, std::, <ctime>)
 SYMBOL(modf, std::, <cmath>)
+SYMBOL(modff, std::, <cmath>)
+SYMBOL(modfl, std::, <cmath>)
 SYMBOL(modulus, std::, <functional>)
 SYMBOL(money_base, std::, <locale>)
 SYMBOL(money_get, std::, <locale>)
 SYMBOL(money_put, std::, <locale>)
 SYMBOL(moneypunct, std::, <locale>)
 SYMBOL(moneypunct_byname, std::, <locale>)
 SYMBOL(monostate, std::, <variant>)
 SYMBOL(move_backward, std::, <algorithm>)
 SYMBOL(move_if_noexcept, std::, <utility>)
 SYMBOL(move_iterator, std::, <iterator>)
 SYMBOL(mt19937, std::, <random>)
 SYMBOL(mt19937_64, std::, <random>)
 SYMBOL(multimap, std::, <map>)
 SYMBOL(multiplies, std::, <functional>)
 SYMBOL(multiset, std::, <set>)
 SYMBOL(mutex, std::, <mutex>)
 SYMBOL(nan, std::, <cmath>)
 SYMBOL(nanf, std::, <cmath>)
 SYMBOL(nanl, std::, <cmath>)
 SYMBOL(nano, std::, <ratio>)
 SYMBOL(nearbyint, std::, <cmath>)
+SYMBOL(nearbyintf, std::, <cmath>)
+SYMBOL(nearbyintl, std::, <cmath>)
 SYMBOL(negate, std::, <functional>)
 SYMBOL(negation, std::, <type_traits>)
 SYMBOL(negation_v, std::, <type_traits>)
 SYMBOL(negative_binomial_distribution, std::, <random>)
 SYMBOL(nested_exception, std::, <exception>)
 SYMBOL(new_handler, std::, <new>)
 SYMBOL(next, std::, <iterator>)
 SYMBOL(next_permutation, std::, <algorithm>)
 SYMBOL(nextafter, std::, <cmath>)
+SYMBOL(nextafterf, std::, <cmath>)
+SYMBOL(nextafterl, std::, <cmath>)
 SYMBOL(nexttoward, std::, <cmath>)
+SYMBOL(nexttowardf, std::, <cmath>)
+SYMBOL(nexttowardl, std::, <cmath>)
 SYMBOL(no_emit_on_flush, std::, <ostream>)
 SYMBOL(noboolalpha, std::, <ios>)
 SYMBOL(none_of, std::, <algorithm>)
 SYMBOL(norm, std::, <complex>)
 SYMBOL(normal_distribution, std::, <random>)
 SYMBOL(noshowbase, std::, <ios>)
 SYMBOL(noshowpoint, std::, <ios>)
 SYMBOL(noshowpos, std::, <ios>)

 SYMBOL(oct, std::, <ios>)
 SYMBOL(ofstream, std::, <fstream>)
 SYMBOL(once_flag, std::, <mutex>)
 SYMBOL(optional, std::, <optional>)
 SYMBOL(ostream, std::, <ostream>)
 SYMBOL(ostream_iterator, std::, <iterator>)
 SYMBOL(ostreambuf_iterator, std::, <iterator>)
 SYMBOL(ostringstream, std::, <sstream>)
+SYMBOL(ostrstream, std::, <strstream>)
 SYMBOL(osyncstream, std::, <syncstream>)
 SYMBOL(out_of_range, std::, <stdexcept>)
 SYMBOL(output_iterator_tag, std::, <iterator>)
 SYMBOL(overflow_error, std::, <stdexcept>)
 SYMBOL(owner_less, std::, <memory>)
 SYMBOL(packaged_task, std::, <future>)
 SYMBOL(pair, std::, <utility>)
 SYMBOL(partial_order, std::, <compare>)

 SYMBOL(piecewise_constant_distribution, std::, <random>)
 SYMBOL(piecewise_construct_t, std::, <utility>)
 SYMBOL(piecewise_linear_distribution, std::, <random>)
 SYMBOL(plus, std::, <functional>)
 SYMBOL(pointer_safety, std::, <memory>)
 SYMBOL(pointer_traits, std::, <memory>)
 SYMBOL(poisson_distribution, std::, <random>)
 SYMBOL(polar, std::, <complex>)
-SYMBOL(polymorphic_allocator, std::, <memory_resource>)
 SYMBOL(pop_heap, std::, <algorithm>)
 SYMBOL(pow, std::, <cmath>)
+SYMBOL(powf, std::, <cmath>)
+SYMBOL(powl, std::, <cmath>)
 SYMBOL(prev, std::, <iterator>)
 SYMBOL(prev_permutation, std::, <algorithm>)
 SYMBOL(printf, std::, <cstdio>)
 SYMBOL(priority_queue, std::, <queue>)
 SYMBOL(proj, std::, <complex>)
 SYMBOL(promise, std::, <future>)
 SYMBOL(ptrdiff_t, std::, <cstddef>)
 SYMBOL(push_heap, std::, <algorithm>)
 SYMBOL(put_money, std::, <iomanip>)
 SYMBOL(put_time, std::, <iomanip>)
 SYMBOL(putc, std::, <cstdio>)
 SYMBOL(putchar, std::, <cstdio>)
 SYMBOL(puts, std::, <cstdio>)
 SYMBOL(putwc, std::, <cwchar>)
 SYMBOL(putwchar, std::, <cwchar>)
 SYMBOL(qsort, std::, <cstdlib>)
 SYMBOL(queue, std::, <queue>)
 SYMBOL(quick_exit, std::, <cstdlib>)
 SYMBOL(quoted, std::, <iomanip>)
 SYMBOL(raise, std::, <csignal>)
 SYMBOL(rand, std::, <cstdlib>)
 SYMBOL(random_access_iterator_tag, std::, <iterator>)
 SYMBOL(random_device, std::, <random>)
-SYMBOL(random_shuffle, std::, <algorithm>)
 SYMBOL(range_error, std::, <stdexcept>)
 SYMBOL(rank, std::, <type_traits>)
 SYMBOL(rank_v, std::, <type_traits>)
 SYMBOL(ranlux24, std::, <random>)
 SYMBOL(ranlux24_base, std::, <random>)
 SYMBOL(ranlux48, std::, <random>)
 SYMBOL(ranlux48_base, std::, <random>)
 SYMBOL(ratio, std::, <ratio>)

 SYMBOL(ratio_less_equal, std::, <ratio>)
 SYMBOL(ratio_less_equal_v, std::, <ratio>)
 SYMBOL(ratio_less_v, std::, <ratio>)
 SYMBOL(ratio_multiply, std::, <ratio>)
 SYMBOL(ratio_not_equal, std::, <ratio>)
 SYMBOL(ratio_not_equal_v, std::, <ratio>)
 SYMBOL(ratio_subtract, std::, <ratio>)
 SYMBOL(rbegin, std::, <iterator>)
+SYMBOL(readable_traits, std::, <iterator>)
 SYMBOL(real, std::, <complex>)
 SYMBOL(realloc, std::, <cstdlib>)
 SYMBOL(recursive_mutex, std::, <mutex>)
 SYMBOL(recursive_timed_mutex, std::, <mutex>)
 SYMBOL(reduce, std::, <numeric>)
 SYMBOL(ref, std::, <functional>)
 SYMBOL(reference_wrapper, std::, <functional>)
 SYMBOL(regex, std::, <regex>)
 SYMBOL(regex_error, std::, <regex>)
 SYMBOL(regex_iterator, std::, <regex>)
 SYMBOL(regex_match, std::, <regex>)
 SYMBOL(regex_replace, std::, <regex>)
 SYMBOL(regex_search, std::, <regex>)
 SYMBOL(regex_token_iterator, std::, <regex>)
 SYMBOL(regex_traits, std::, <regex>)
 SYMBOL(reinterpret_pointer_cast, std::, <memory>)
 SYMBOL(remainder, std::, <cmath>)
+SYMBOL(remainderf, std::, <cmath>)
+SYMBOL(remainderl, std::, <cmath>)
 SYMBOL(remove, std::, <cstdio>)
 SYMBOL(remove_all_extents, std::, <type_traits>)
 SYMBOL(remove_all_extents_t, std::, <type_traits>)
 SYMBOL(remove_const, std::, <type_traits>)
 SYMBOL(remove_const_t, std::, <type_traits>)
 SYMBOL(remove_copy, std::, <algorithm>)
 SYMBOL(remove_copy_if, std::, <algorithm>)
 SYMBOL(remove_cv, std::, <type_traits>)
 SYMBOL(remove_cv_t, std::, <type_traits>)
 SYMBOL(remove_cvref, std::, <type_traits>)
 SYMBOL(remove_cvref_t, std::, <type_traits>)
 SYMBOL(remove_extent, std::, <type_traits>)
 SYMBOL(remove_extent_t, std::, <type_traits>)
 SYMBOL(remove_pointer, std::, <type_traits>)
 SYMBOL(remove_pointer_t, std::, <type_traits>)
 SYMBOL(remove_reference, std::, <type_traits>)
 SYMBOL(remove_reference_t, std::, <type_traits>)
 SYMBOL(remove_volatile, std::, <type_traits>)
 SYMBOL(remove_volatile_t, std::, <type_traits>)
 SYMBOL(remquo, std::, <cmath>)
+SYMBOL(remquof, std::, <cmath>)
+SYMBOL(remquol, std::, <cmath>)
 SYMBOL(rename, std::, <cstdio>)
 SYMBOL(rend, std::, <iterator>)
 SYMBOL(replace, std::, <algorithm>)
 SYMBOL(replace_copy, std::, <algorithm>)
 SYMBOL(replace_copy_if, std::, <algorithm>)
 SYMBOL(replace_if, std::, <algorithm>)
 SYMBOL(resetiosflags, std::, <iomanip>)
-SYMBOL(result_of, std::, <type_traits>)
-SYMBOL(result_of_t, std::, <type_traits>)
 SYMBOL(rethrow_exception, std::, <exception>)
 SYMBOL(rethrow_if_nested, std::, <exception>)
 SYMBOL(reverse, std::, <algorithm>)
 SYMBOL(reverse_copy, std::, <algorithm>)
 SYMBOL(reverse_iterator, std::, <iterator>)
 SYMBOL(rewind, std::, <cstdio>)
 SYMBOL(right, std::, <ios>)
 SYMBOL(rint, std::, <cmath>)
+SYMBOL(rintf, std::, <cmath>)
+SYMBOL(rintl, std::, <cmath>)
 SYMBOL(rotate, std::, <algorithm>)
 SYMBOL(rotate_copy, std::, <algorithm>)
 SYMBOL(round, std::, <cmath>)
 SYMBOL(round_indeterminate, std::, <limits>)
 SYMBOL(round_to_nearest, std::, <limits>)
 SYMBOL(round_toward_infinity, std::, <limits>)
 SYMBOL(round_toward_neg_infinity, std::, <limits>)
 SYMBOL(round_toward_zero, std::, <limits>)
+SYMBOL(roundf, std::, <cmath>)
+SYMBOL(roundl, std::, <cmath>)
 SYMBOL(runtime_error, std::, <stdexcept>)
 SYMBOL(sample, std::, <algorithm>)
 SYMBOL(scalbln, std::, <cmath>)
+SYMBOL(scalblnf, std::, <cmath>)
+SYMBOL(scalblnl, std::, <cmath>)
 SYMBOL(scalbn, std::, <cmath>)
+SYMBOL(scalbnf, std::, <cmath>)
+SYMBOL(scalbnl, std::, <cmath>)
 SYMBOL(scanf, std::, <cstdio>)
 SYMBOL(scientific, std::, <ios>)
 SYMBOL(scoped_allocator_adaptor, std::, <scoped_allocator>)
 SYMBOL(search, std::, <algorithm>)
 SYMBOL(search_n, std::, <algorithm>)
 SYMBOL(seed_seq, std::, <random>)
 SYMBOL(set, std::, <set>)
 SYMBOL(set_difference, std::, <algorithm>)

 SYMBOL(showpoint, std::, <ios>)
 SYMBOL(showpos, std::, <ios>)
 SYMBOL(shuffle, std::, <algorithm>)
 SYMBOL(shuffle_order_engine, std::, <random>)
 SYMBOL(sig_atomic_t, std::, <csignal>)
 SYMBOL(signal, std::, <csignal>)
 SYMBOL(signbit, std::, <cmath>)
 SYMBOL(sin, std::, <cmath>)
+SYMBOL(sinf, std::, <cmath>)
 SYMBOL(sinh, std::, <cmath>)
+SYMBOL(sinhf, std::, <cmath>)
+SYMBOL(sinhl, std::, <cmath>)
+SYMBOL(sinl, std::, <cmath>)
 SYMBOL(size, std::, <iterator>)
 SYMBOL(skipws, std::, <ios>)
 SYMBOL(slice, std::, <valarray>)
 SYMBOL(slice_array, std::, <valarray>)
 SYMBOL(smatch, std::, <regex>)
 SYMBOL(snprintf, std::, <cstdio>)
 SYMBOL(sort, std::, <algorithm>)
 SYMBOL(sort_heap, std::, <algorithm>)
 SYMBOL(span, std::, <span>)
 SYMBOL(sprintf, std::, <cstdio>)
 SYMBOL(sqrt, std::, <cmath>)
+SYMBOL(sqrtf, std::, <cmath>)
+SYMBOL(sqrtl, std::, <cmath>)
 SYMBOL(srand, std::, <cstdlib>)
 SYMBOL(sregex_iterator, std::, <regex>)
 SYMBOL(sregex_token_iterator, std::, <regex>)
 SYMBOL(sscanf, std::, <cstdio>)
+SYMBOL(ssize, std::, <iterator>)
 SYMBOL(ssub_match, std::, <regex>)
 SYMBOL(stable_partition, std::, <algorithm>)
 SYMBOL(stable_sort, std::, <algorithm>)
 SYMBOL(stack, std::, <stack>)
 SYMBOL(static_pointer_cast, std::, <memory>)
 SYMBOL(strcat, std::, <cstring>)
 SYMBOL(strchr, std::, <cstring>)
 SYMBOL(strcmp, std::, <cstring>)

 SYMBOL(strong_equal, std::, <compare>)
 SYMBOL(strong_equality, std::, <compare>)
 SYMBOL(strong_order, std::, <compare>)
 SYMBOL(strong_ordering, std::, <compare>)
 SYMBOL(strpbrk, std::, <cstring>)
 SYMBOL(strrchr, std::, <cstring>)
 SYMBOL(strspn, std::, <cstring>)
 SYMBOL(strstr, std::, <cstring>)
+SYMBOL(strstream, std::, <strstream>)
+SYMBOL(strstreambuf, std::, <strstream>)
 SYMBOL(strtod, std::, <cstdlib>)
 SYMBOL(strtof, std::, <cstdlib>)
 SYMBOL(strtoimax, std::, <cinttypes>)
 SYMBOL(strtok, std::, <cstring>)
 SYMBOL(strtol, std::, <cstdlib>)
 SYMBOL(strtold, std::, <cstdlib>)
 SYMBOL(strtoll, std::, <cstdlib>)
 SYMBOL(strtoul, std::, <cstdlib>)
 SYMBOL(strtoull, std::, <cstdlib>)
 SYMBOL(strtoumax, std::, <cinttypes>)
 SYMBOL(strxfrm, std::, <cstring>)
 SYMBOL(student_t_distribution, std::, <random>)
 SYMBOL(sub_match, std::, <regex>)
 SYMBOL(subtract_with_carry_engine, std::, <random>)
 SYMBOL(swap_ranges, std::, <algorithm>)
 SYMBOL(swprintf, std::, <cwchar>)
 SYMBOL(swscanf, std::, <cwchar>)
 SYMBOL(syncbuf, std::, <syncstream>)
 SYMBOL(system, std::, <cstdlib>)
 SYMBOL(system_category, std::, <system_error>)
 SYMBOL(system_error, std::, <system_error>)
 SYMBOL(tan, std::, <cmath>)
+SYMBOL(tanf, std::, <cmath>)
 SYMBOL(tanh, std::, <cmath>)
+SYMBOL(tanhf, std::, <cmath>)
+SYMBOL(tanhl, std::, <cmath>)
+SYMBOL(tanl, std::, <cmath>)
 SYMBOL(tera, std::, <ratio>)
 SYMBOL(terminate, std::, <exception>)
 SYMBOL(terminate_handler, std::, <exception>)
 SYMBOL(tgamma, std::, <cmath>)
+SYMBOL(tgammaf, std::, <cmath>)
+SYMBOL(tgammal, std::, <cmath>)
 SYMBOL(thread, std::, <thread>)
 SYMBOL(throw_with_nested, std::, <exception>)
 SYMBOL(tie, std::, <tuple>)
 SYMBOL(time, std::, <ctime>)
 SYMBOL(time_base, std::, <locale>)
 SYMBOL(time_get, std::, <locale>)
 SYMBOL(time_get_byname, std::, <locale>)
 SYMBOL(time_put, std::, <locale>)

 SYMBOL(towlower, std::, <cwctype>)
 SYMBOL(towupper, std::, <cwctype>)
 SYMBOL(transform, std::, <algorithm>)
 SYMBOL(transform_exclusive_scan, std::, <numeric>)
 SYMBOL(transform_inclusive_scan, std::, <numeric>)
 SYMBOL(transform_reduce, std::, <numeric>)
 SYMBOL(true_type, std::, <type_traits>)
 SYMBOL(trunc, std::, <cmath>)
+SYMBOL(truncf, std::, <cmath>)
+SYMBOL(truncl, std::, <cmath>)
 SYMBOL(try_lock, std::, <mutex>)
 SYMBOL(try_to_lock, std::, <mutex>)
 SYMBOL(try_to_lock_t, std::, <mutex>)
 SYMBOL(tuple, std::, <tuple>)
 SYMBOL(tuple_cat, std::, <tuple>)
 SYMBOL(type_identity, std::, <type_traits>)
 SYMBOL(type_identity_t, std::, <type_traits>)
 SYMBOL(type_index, std::, <typeindex>)
 SYMBOL(type_info, std::, <typeinfo>)
 SYMBOL(u16streampos, std::, <ios>)
 SYMBOL(u16string, std::, <string>)
 SYMBOL(u16string_view, std::, <string_view>)
 SYMBOL(u32streampos, std::, <ios>)
 SYMBOL(u32string, std::, <string>)
 SYMBOL(u32string_view, std::, <string_view>)
+SYMBOL(u8streampos, std::, <ios>)
+SYMBOL(u8string, std::, <string>)
+SYMBOL(u8string_view, std::, <string_view>)
 SYMBOL(uint16_t, std::, <cstdint>)
 SYMBOL(uint32_t, std::, <cstdint>)
 SYMBOL(uint64_t, std::, <cstdint>)
 SYMBOL(uint8_t, std::, <cstdint>)
 SYMBOL(uint_fast16_t, std::, <cstdint>)
 SYMBOL(uint_fast32_t, std::, <cstdint>)
 SYMBOL(uint_fast64_t, std::, <cstdint>)
 SYMBOL(uint_fast8_t, std::, <cstdint>)
 SYMBOL(uint_least16_t, std::, <cstdint>)
 SYMBOL(uint_least32_t, std::, <cstdint>)
 SYMBOL(uint_least64_t, std::, <cstdint>)
 SYMBOL(uint_least8_t, std::, <cstdint>)
 SYMBOL(uintmax_t, std::, <cstdint>)
 SYMBOL(uintptr_t, std::, <cstdint>)
 SYMBOL(uncaught_exceptions, std::, <exception>)
 SYMBOL(undeclare_no_pointers, std::, <memory>)
 SYMBOL(undeclare_reachable, std::, <memory>)
 SYMBOL(underflow_error, std::, <stdexcept>)
 SYMBOL(underlying_type, std::, <type_traits>)
 SYMBOL(underlying_type_t, std::, <type_traits>)
 SYMBOL(ungetc, std::, <cstdio>)
 SYMBOL(ungetwc, std::, <cwchar>)
 SYMBOL(uniform_int_distribution, std::, <random>)
 SYMBOL(uniform_real_distribution, std::, <random>)
+SYMBOL(uninitialized_construct_using_allocator, std::, <memory>)
 SYMBOL(uninitialized_copy, std::, <memory>)
 SYMBOL(uninitialized_copy_n, std::, <memory>)
 SYMBOL(uninitialized_default_construct, std::, <memory>)
 SYMBOL(uninitialized_default_construct_n, std::, <memory>)
 SYMBOL(uninitialized_fill, std::, <memory>)
 SYMBOL(uninitialized_fill_n, std::, <memory>)
 SYMBOL(uninitialized_move, std::, <memory>)
 SYMBOL(uninitialized_move_n, std::, <memory>)
 SYMBOL(uninitialized_value_construct, std::, <memory>)
 SYMBOL(uninitialized_value_construct_n, std::, <memory>)
 SYMBOL(unique, std::, <algorithm>)
 SYMBOL(unique_copy, std::, <algorithm>)
 SYMBOL(unique_lock, std::, <mutex>)
 SYMBOL(unique_ptr, std::, <memory>)
 SYMBOL(unitbuf, std::, <ios>)
 SYMBOL(unordered_map, std::, <unordered_map>)
 SYMBOL(unordered_multimap, std::, <unordered_map>)
 SYMBOL(unordered_multiset, std::, <unordered_set>)
 SYMBOL(unordered_set, std::, <unordered_set>)
 SYMBOL(upper_bound, std::, <algorithm>)
 SYMBOL(uppercase, std::, <ios>)
 SYMBOL(use_facet, std::, <locale>)
 SYMBOL(uses_allocator, std::, <memory>)
+SYMBOL(uses_allocator_construction_args, std::, <memory>)
 SYMBOL(uses_allocator_v, std::, <memory>)
 SYMBOL(va_list, std::, <cstdarg>)
 SYMBOL(valarray, std::, <valarray>)
 SYMBOL(variant, std::, <variant>)
 SYMBOL(variant_alternative, std::, <variant>)
 SYMBOL(variant_alternative_t, std::, <variant>)
 SYMBOL(variant_npos, std::, <variant>)
 SYMBOL(variant_size, std::, <variant>)

 SYMBOL(list, std::pmr::, <list>)
 SYMBOL(map, std::pmr::, <map>)
 SYMBOL(memory_resource, std::pmr::, <memory_resource>)
 SYMBOL(monotonic_buffer_resource, std::pmr::, <memory_resource>)
 SYMBOL(multimap, std::pmr::, <map>)
 SYMBOL(multiset, std::pmr::, <set>)
 SYMBOL(new_delete_resource, std::pmr::, <memory_resource>)
 SYMBOL(null_memory_resource, std::pmr::, <memory_resource>)
-SYMBOL(polymorphic_allocator, std::pmr::, <memory_resource>)
 SYMBOL(pool_options, std::pmr::, <memory_resource>)
 SYMBOL(set, std::pmr::, <set>)
 SYMBOL(set_default_resource, std::pmr::, <memory_resource>)
 SYMBOL(string, std::pmr::, <string>)
 SYMBOL(synchronized_pool_resource, std::pmr::, <memory_resource>)
 SYMBOL(u16string, std::pmr::, <string>)
 SYMBOL(u32string, std::pmr::, <string>)
+SYMBOL(u8string, std::pmr::, <string>)
 SYMBOL(unordered_map, std::pmr::, <unordered_map>)
 SYMBOL(unordered_multimap, std::pmr::, <unordered_map>)
 SYMBOL(unordered_multiset, std::pmr::, <unordered_set>)
 SYMBOL(unordered_set, std::pmr::, <unordered_set>)
 SYMBOL(unsynchronized_pool_resource, std::pmr::, <memory_resource>)
 SYMBOL(vector, std::pmr::, <vector>)
 SYMBOL(wstring, std::pmr::, <string>)
 SYMBOL(ECMAScript, std::regex_constants::, <regex>)

clang-tools-extra/clangd/include-mapping/cppreference_parser.py

for symbol_href in soup.select("a[title]"):
     symbol_tt = symbol_href.find("tt")
     if symbol_tt:
       symbols.append((symbol_tt.text.rstrip("<>()"), # strip any trailing <>()
                       symbol_href["href"], variant))
   return symbols
 
 
 def _ReadSymbolPage(path, name):
+  if not os.path.isfile(path):
+    return []
   with open(path) as f:
     return _ParseSymbolPage(f.read(), name)
 
 
 def _GetSymbols(pool, root_dir, index_page_name, namespace):
   """Get all symbols listed in the index page. All symbols should be in the
   given namespace.