Begin C++20 support.

test/all/Jamfile.v2

@@ -1,7 +1,7 @@
 #
 # Regression test Jamfile for boost configuration setup.
 # *** DO NOT EDIT THIS FILE BY HAND ***
-# This file was automatically generated on Sun Jul 26 20:34:45 2020
+# This file was automatically generated on Thu Mar  4 18:30:30 2021
 #  by libs/config/tools/generate.cpp
 # Copyright John Maddock.
 # Use, modification and distribution are subject to the 
@@ -376,6 +376,48 @@ test-suite "BOOST_NO_CXX17_STD_INVOKE" :
 test-suite "BOOST_NO_CXX17_STRUCTURED_BINDINGS" : 
 [ run ../no_cxx17_structured_bindings_pass.cpp ]
 [ compile-fail ../no_cxx17_structured_bindings_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_BARRIER" : 
+[ run ../no_cxx20_hdr_barrier_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_barrier_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_BIT" : 
+[ run ../no_cxx20_hdr_bit_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_bit_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_COMPARE" : 
+[ run ../no_cxx20_hdr_compare_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_compare_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_CONCEPTS" : 
+[ run ../no_cxx20_hdr_concepts_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_concepts_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_COROUTINE" : 
+[ run ../no_cxx20_hdr_coroutine_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_coroutine_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_FORMAT" : 
+[ run ../no_cxx20_hdr_format_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_format_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_LATCH" : 
+[ run ../no_cxx20_hdr_latch_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_latch_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_NUMBERS" : 
+[ run ../no_cxx20_hdr_numbers_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_numbers_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_RANGES" : 
+[ run ../no_cxx20_hdr_ranges_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_ranges_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_SEMAPHORE" : 
+[ run ../no_cxx20_hdr_semaphore_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_semaphore_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_SOURCE_LOCATION" : 
+[ run ../no_cxx20_hdr_source_location_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_source_location_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_SPAN" : 
+[ run ../no_cxx20_hdr_span_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_span_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_STOP_TOKEN" : 
+[ run ../no_cxx20_hdr_stop_token_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_stop_token_fail.cpp ] ;
+test-suite "BOOST_NO_CXX20_HDR_SYNCSTREAM" : 
+[ run ../no_cxx20_hdr_syncstream_pass.cpp ]
+[ compile-fail ../no_cxx20_hdr_syncstream_fail.cpp ] ;
 test-suite "BOOST_NO_CXX98_BINDERS" : 
 [ run ../no_cxx98_binders_pass.cpp ]
 [ compile-fail ../no_cxx98_binders_fail.cpp ] ;

test/boost_no_cxx11_hdr_type_traits.ipp

@@ -44,7 +44,10 @@ int test()
   using std::is_trivial;
   using std::is_trivially_copyable;
   using std::is_standard_layout;
+#if !((__cplusplus > 201703) || (defined(_MSVC_LANG) && (_MSVC_LANG > 201703)))
+  // deprecated in C++20 (including preview editions):
   using std::is_pod;
+#endif
 #if !((__cplusplus > 201700) || (defined(_MSVC_LANG) && (_MSVC_LANG > 201700)))
   // deprecated in C++ 17:
   using std::is_literal_type;

test/boost_no_cxx20_hdr_barrier.ipp

@@ -0,0 +1,24 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_BARRIER
+//  TITLE:         C++20 <barrier> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <barrier>
+
+#include <barrier>
+
+namespace boost_no_cxx20_hdr_barrier {
+
+   using std::barrier;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_bit.ipp

@@ -0,0 +1,35 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_BIT
+//  TITLE:         C++20 <bit> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <bit>
+
+#include <bit>
+
+namespace boost_no_cxx20_hdr_bit {
+
+	using std::bit_cast;
+	using std::has_single_bit;
+	using std::bit_ceil;
+	using std::bit_floor;
+	using std::bit_width;
+	using std::rotl;
+	using std::rotr;
+	using std::countl_zero;
+	using std::countl_one;
+	using std::countr_zero;
+	using std::countr_one;
+	using std::popcount;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_compare.ipp

@@ -0,0 +1,44 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_COMPARE
+//  TITLE:         C++20 <compare> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <compare>
+
+#include <compare>
+
+namespace boost_no_cxx20_hdr_compare {
+
+   using std::three_way_comparable;
+   using std::three_way_comparable_with;
+   using std::partial_ordering;
+   using std::weak_ordering;
+   using std::strong_ordering;
+   using std::common_comparison_category;
+   using std::compare_three_way_result;
+   using std::compare_three_way;
+   // Customization points aren't actual functions:
+   //using std::strong_order;
+   //using std::weak_order;
+   //using std::partial_order;
+   //using std::compare_strong_order_fallback;
+   //using std::compare_weak_order_fallback;
+   //using std::compare_partial_order_fallback;
+   using std::is_eq;
+   using std::is_neq;
+   using std::is_lt;
+   using std::is_lteq;
+   using std::is_gt;
+   using std::is_gteq;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_concepts.ipp

@@ -0,0 +1,55 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_CONCEPTS
+//  TITLE:         C++20 <concepts> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <concepts>
+
+#include <concepts>
+
+namespace boost_no_cxx20_hdr_concepts {
+
+   using std::same_as;
+   using std::derived_from;
+   using std::convertible_to;
+   using std::common_reference_with;
+   using std::common_with;
+   using std::integral;
+   using std::signed_integral;
+   using std::unsigned_integral;
+   using std::floating_point;
+   using std::assignable_from;
+   using std::swappable;
+   using std::swappable_with;
+   using std::destructible;
+   using std::constructible_from;
+   using std::default_initializable;
+   using std::move_constructible;
+   using std::copy_constructible;
+   using std::equality_comparable;
+   using std::equality_comparable_with;
+   using std::totally_ordered;
+   using std::totally_ordered_with;
+   using std::movable;
+   using std::copyable;
+   using std::semiregular;
+   using std::regular;
+   using std::invocable;
+   using std::regular_invocable;
+   using std::predicate;
+   using std::relation;
+   using std::equivalence_relation;
+   using std::strict_weak_order;
+   using std::swap;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_coroutine.ipp

@@ -0,0 +1,30 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_COROUTINE
+//  TITLE:         C++20 <coroutine> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <coroutine>
+
+#include <coroutine>
+
+namespace boost_no_cxx20_hdr_coroutine {
+
+   using std::coroutine_traits;
+   using std::coroutine_handle;
+   using std::noop_coroutine_promise;
+   using std::noop_coroutine_handle;
+   using std::noop_coroutine;
+   using std::suspend_never;
+   using std::suspend_always;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_format.ipp

@@ -0,0 +1,44 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_FORMAT
+//  TITLE:         C++20 <format> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <format>
+
+#include <format>
+
+namespace boost_no_cxx20_hdr_format {
+
+   using std::formatter;
+   using std::basic_format_parse_context;
+   using std::format_parse_context;
+   using std::wformat_parse_context;
+   using std::basic_format_context;
+   using std::format_context;
+   using std::wformat_context;
+   using std::basic_format_arg;
+   using std::basic_format_args;
+   using std::format_args;
+   using std::wformat_args;
+   using std::format_error;
+   using std::format;
+   using std::format_to;
+   using std::format_to_n;
+   using std::formatted_size;
+   using std::vformat;
+   using std::vformat_to;
+   using std::visit_format_arg;
+   using std::make_format_args;
+   using std::make_wformat_args;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_latch.ipp

@@ -0,0 +1,24 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_LATCH
+//  TITLE:         C++20 <latch> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <latch>
+
+#include <latch>
+
+namespace boost_no_cxx20_hdr_latch {
+
+   using std::latch;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_numbers.ipp

@@ -0,0 +1,36 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_NUMBERS
+//  TITLE:         C++20 <numbers> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <numbers>
+
+#include <numbers>
+
+namespace boost_no_cxx20_hdr_numbers {
+
+	using std::numbers::e_v;
+   using std::numbers::log2e_v;
+   using std::numbers::log10e_v;
+   using std::numbers::pi_v;
+   using std::numbers::inv_pi_v;
+   using std::numbers::inv_sqrtpi_v;
+   using std::numbers::ln2_v;
+   using std::numbers::ln10_v;
+   using std::numbers::sqrt2_v;
+   using std::numbers::sqrt3_v;
+   using std::numbers::inv_sqrt3_v;
+   using std::numbers::egamma_v;
+   using std::numbers::phi_v;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_ranges.ipp

@@ -0,0 +1,101 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_RANGES
+//  TITLE:         C++20 <ranges> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <ranges>
+
+#include <ranges>
+
+namespace boost_no_cxx20_hdr_ranges {
+
+	using std::ranges::range;
+	using std::ranges::borrowed_range;
+	using std::ranges::sized_range;
+	using std::ranges::view;
+	using std::ranges::input_range;
+	using std::ranges::output_range;
+	using std::ranges::forward_range;
+	using std::ranges::bidirectional_range;
+	using std::ranges::random_access_range;
+	using std::ranges::contiguous_range;
+	using std::ranges::common_range;
+	using std::ranges::viewable_range;
+
+	using std::ranges::iterator_t;
+	using std::ranges::sentinel_t;
+	using std::ranges::range_difference_t;
+	using std::ranges::range_size_t;
+	using std::ranges::range_value_t;
+	using std::ranges::range_reference_t;
+	using std::ranges::range_rvalue_reference_t;
+	using std::ranges::view_interface;
+	using std::ranges::subrange;
+	using std::ranges::dangling;
+	using std::ranges::borrowed_iterator_t;
+	using std::ranges::borrowed_subrange_t;
+	using std::ranges::empty_view;
+	using std::views::empty;
+	using std::ranges::single_view;
+	using std::views::single;
+	using std::ranges::iota_view;
+	using std::views::iota;
+	using std::ranges::basic_istream_view;
+	using std::ranges::istream_view;
+	using std::views::all_t;
+	using std::views::all;
+	using std::ranges::ref_view;
+	using std::ranges::filter_view;
+	using std::views::filter;
+	using std::ranges::transform_view;
+	using std::views::transform;
+	using std::ranges::take_view;
+	using std::views::take;
+	using std::ranges::take_while_view;
+	using std::views::take_while;
+	using std::ranges::drop_view;
+	using std::views::drop;
+	using std::ranges::drop_while_view;
+	using std::views::drop_while;
+	using std::ranges::join_view;
+	using std::views::join;
+	using std::ranges::split_view;
+	using std::views::split;
+	using std::views::counted;
+	using std::ranges::common_view;
+	using std::views::common;
+	using std::ranges::reverse_view;
+	using std::views::reverse;
+	using std::ranges::elements_view;
+	using std::views::elements;
+	using std::ranges::keys_view;
+	using std::views::keys;
+	using std::ranges::values_view;
+	using std::views::values;
+	using std::ranges::begin;
+	using std::ranges::end;
+	using std::ranges::cbegin;
+	using std::ranges::cend;
+	using std::ranges::rbegin;
+	using std::ranges::rend;
+	using std::ranges::crbegin;
+	using std::ranges::crend;
+	using std::ranges::size;
+	using std::ranges::ssize;
+	using std::ranges::empty;
+	using std::ranges::data;
+	using std::ranges::cdata;
+	using std::ranges::subrange_kind;
+
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_semaphore.ipp

@@ -0,0 +1,25 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_SEMAPHORE
+//  TITLE:         C++20 <semaphore> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <semaphore>
+
+#include <semaphore>
+
+namespace boost_no_cxx20_hdr_semaphore {
+
+   using std::counting_semaphore;
+   using std::binary_semaphore;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_source_location.ipp

@@ -0,0 +1,24 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_SOURCE_LOCATION
+//  TITLE:         C++20 <source_location> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <source_location>
+
+#include <source_location>
+
+namespace boost_no_cxx20_hdr_source_location {
+
+   using std::source_location;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_span.ipp

@@ -0,0 +1,27 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_SPAN
+//  TITLE:         C++20 <span> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <span>
+
+#include <span>
+
+namespace boost_no_cxx20_hdr_span {
+
+   using std::span;
+   using std::dynamic_extent;
+   using std::as_bytes;
+   using std::as_writable_bytes;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_stop_token.ipp

@@ -0,0 +1,28 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_STOP_TOKEN
+//  TITLE:         C++20 <stop_token> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <stop_token>
+
+#include <stop_token>
+
+namespace boost_no_cxx20_hdr_stop_token {
+
+   using std::stop_token;
+   using std::stop_source;
+   using std::stop_callback;
+   using std::nostopstate_t;
+   using std::nostopstate;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/boost_no_cxx20_hdr_syncstream.ipp

@@ -0,0 +1,29 @@
+//  (C) Copyright John Maddock 2021
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX20_HDR_SYNCSTREAM
+//  TITLE:         C++20 <syncstream> header is either not present or too broken to be used
+//  DESCRIPTION:   The compiler does not support the C++20 header <syncstream>
+
+#include <syncstream>
+
+namespace boost_no_cxx20_hdr_syncstream {
+
+   using std::basic_syncbuf;
+   using std::basic_osyncstream;
+   using std::syncbuf;
+   using std::wsyncbuf;
+   using std::osyncstream;
+   using std::wosyncstream;
+
+   int test()
+   {
+      return 0;
+   }
+
+}

test/config_info.cpp

@@ -1177,6 +1177,20 @@ void print_boost_macros()
    PRINT_MACRO(BOOST_NO_CXX17_STD_APPLY);
    PRINT_MACRO(BOOST_NO_CXX17_STD_INVOKE);
    PRINT_MACRO(BOOST_NO_CXX17_STRUCTURED_BINDINGS);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_BARRIER);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_BIT);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_COMPARE);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_CONCEPTS);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_COROUTINE);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_FORMAT);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_LATCH);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_NUMBERS);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_RANGES);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_SEMAPHORE);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_SOURCE_LOCATION);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_SPAN);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_STOP_TOKEN);
+   PRINT_MACRO(BOOST_NO_CXX20_HDR_SYNCSTREAM);
    PRINT_MACRO(BOOST_NO_CXX98_BINDERS);
    PRINT_MACRO(BOOST_NO_CXX98_FUNCTION_BASE);
    PRINT_MACRO(BOOST_NO_CXX98_RANDOM_SHUFFLE);
@@ -1243,6 +1257,7 @@ void print_boost_macros()
 
 
 
+
    // END GENERATED BLOCK
 
    PRINT_MACRO(BOOST_INTEL);

test/config_test.cpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sun Jul 26 20:34:45 2020
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-4.
 //  Use, modification and distribution are subject to the 
@@ -427,6 +427,76 @@ namespace boost_no_cxx17_std_invoke = empty_boost;
 #else
 namespace boost_no_cxx17_structured_bindings = empty_boost;
 #endif
+#ifndef BOOST_NO_CXX20_HDR_BARRIER
+#include "boost_no_cxx20_hdr_barrier.ipp"
+#else
+namespace boost_no_cxx20_hdr_barrier = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_BIT
+#include "boost_no_cxx20_hdr_bit.ipp"
+#else
+namespace boost_no_cxx20_hdr_bit = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_COMPARE
+#include "boost_no_cxx20_hdr_compare.ipp"
+#else
+namespace boost_no_cxx20_hdr_compare = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_CONCEPTS
+#include "boost_no_cxx20_hdr_concepts.ipp"
+#else
+namespace boost_no_cxx20_hdr_concepts = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_COROUTINE
+#include "boost_no_cxx20_hdr_coroutine.ipp"
+#else
+namespace boost_no_cxx20_hdr_coroutine = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_FORMAT
+#include "boost_no_cxx20_hdr_format.ipp"
+#else
+namespace boost_no_cxx20_hdr_format = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_LATCH
+#include "boost_no_cxx20_hdr_latch.ipp"
+#else
+namespace boost_no_cxx20_hdr_latch = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_NUMBERS
+#include "boost_no_cxx20_hdr_numbers.ipp"
+#else
+namespace boost_no_cxx20_hdr_numbers = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_RANGES
+#include "boost_no_cxx20_hdr_ranges.ipp"
+#else
+namespace boost_no_cxx20_hdr_ranges = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_SEMAPHORE
+#include "boost_no_cxx20_hdr_semaphore.ipp"
+#else
+namespace boost_no_cxx20_hdr_semaphore = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_SOURCE_LOCATION
+#include "boost_no_cxx20_hdr_source_location.ipp"
+#else
+namespace boost_no_cxx20_hdr_source_location = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_SPAN
+#include "boost_no_cxx20_hdr_span.ipp"
+#else
+namespace boost_no_cxx20_hdr_span = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_STOP_TOKEN
+#include "boost_no_cxx20_hdr_stop_token.ipp"
+#else
+namespace boost_no_cxx20_hdr_stop_token = empty_boost;
+#endif
+#ifndef BOOST_NO_CXX20_HDR_SYNCSTREAM
+#include "boost_no_cxx20_hdr_syncstream.ipp"
+#else
+namespace boost_no_cxx20_hdr_syncstream = empty_boost;
+#endif
 #ifndef BOOST_NO_CXX98_BINDERS
 #include "boost_no_cxx98_binders.ipp"
 #else
@@ -1641,6 +1711,76 @@ int main( int, char *[] )
       std::cerr << "Failed test for BOOST_NO_CXX17_STRUCTURED_BINDINGS at: " << __FILE__ << ":" << __LINE__ << std::endl;
       ++error_count;
    }
+   if(0 != boost_no_cxx20_hdr_barrier::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_BARRIER at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_bit::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_BIT at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_compare::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_COMPARE at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_concepts::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_CONCEPTS at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_coroutine::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_COROUTINE at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_format::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_FORMAT at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_latch::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_LATCH at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_numbers::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_NUMBERS at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_ranges::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_RANGES at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_semaphore::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_SEMAPHORE at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_source_location::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_SOURCE_LOCATION at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_span::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_SPAN at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_stop_token::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_STOP_TOKEN at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
+   if(0 != boost_no_cxx20_hdr_syncstream::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX20_HDR_SYNCSTREAM at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
    if(0 != boost_no_cxx98_binders::test())
    {
       std::cerr << "Failed test for BOOST_NO_CXX98_BINDERS at: " << __FILE__ << ":" << __LINE__ << std::endl;

test/no_cxx20_hdr_barrier_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:19 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_BARRIER
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_BARRIER should not be defined.
+// See file boost_no_cxx20_hdr_barrier.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_BARRIER
+#include "boost_no_cxx20_hdr_barrier.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_barrier::test();
+}
+

test/no_cxx20_hdr_barrier_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:19 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_BARRIER
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_BARRIER should be defined.
+// See file boost_no_cxx20_hdr_barrier.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_BARRIER
+#include "boost_no_cxx20_hdr_barrier.ipp"
+#else
+namespace boost_no_cxx20_hdr_barrier = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_barrier::test();
+}
+

test/no_cxx20_hdr_bit_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:19 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_BIT
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_BIT should not be defined.
+// See file boost_no_cxx20_hdr_bit.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_BIT
+#include "boost_no_cxx20_hdr_bit.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_bit::test();
+}
+

test/no_cxx20_hdr_bit_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:19 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_BIT
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_BIT should be defined.
+// See file boost_no_cxx20_hdr_bit.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_BIT
+#include "boost_no_cxx20_hdr_bit.ipp"
+#else
+namespace boost_no_cxx20_hdr_bit = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_bit::test();
+}
+

test/no_cxx20_hdr_compare_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:19 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_COMPARE
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_COMPARE should not be defined.
+// See file boost_no_cxx20_hdr_compare.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_COMPARE
+#include "boost_no_cxx20_hdr_compare.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_compare::test();
+}
+

test/no_cxx20_hdr_compare_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:19 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_COMPARE
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_COMPARE should be defined.
+// See file boost_no_cxx20_hdr_compare.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_COMPARE
+#include "boost_no_cxx20_hdr_compare.ipp"
+#else
+namespace boost_no_cxx20_hdr_compare = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_compare::test();
+}
+

test/no_cxx20_hdr_concepts_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:20 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_CONCEPTS
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_CONCEPTS should not be defined.
+// See file boost_no_cxx20_hdr_concepts.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_CONCEPTS
+#include "boost_no_cxx20_hdr_concepts.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_concepts::test();
+}
+

test/no_cxx20_hdr_concepts_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:20 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_CONCEPTS
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_CONCEPTS should be defined.
+// See file boost_no_cxx20_hdr_concepts.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_CONCEPTS
+#include "boost_no_cxx20_hdr_concepts.ipp"
+#else
+namespace boost_no_cxx20_hdr_concepts = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_concepts::test();
+}
+

test/no_cxx20_hdr_coroutine_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_COROUTINE
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_COROUTINE should not be defined.
+// See file boost_no_cxx20_hdr_coroutine.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_COROUTINE
+#include "boost_no_cxx20_hdr_coroutine.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_coroutine::test();
+}
+

test/no_cxx20_hdr_coroutine_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_COROUTINE
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_COROUTINE should be defined.
+// See file boost_no_cxx20_hdr_coroutine.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_COROUTINE
+#include "boost_no_cxx20_hdr_coroutine.ipp"
+#else
+namespace boost_no_cxx20_hdr_coroutine = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_coroutine::test();
+}
+

test/no_cxx20_hdr_format_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_FORMAT
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_FORMAT should not be defined.
+// See file boost_no_cxx20_hdr_format.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_FORMAT
+#include "boost_no_cxx20_hdr_format.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_format::test();
+}
+

test/no_cxx20_hdr_format_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_FORMAT
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_FORMAT should be defined.
+// See file boost_no_cxx20_hdr_format.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_FORMAT
+#include "boost_no_cxx20_hdr_format.ipp"
+#else
+namespace boost_no_cxx20_hdr_format = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_format::test();
+}
+

test/no_cxx20_hdr_latch_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_LATCH
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_LATCH should not be defined.
+// See file boost_no_cxx20_hdr_latch.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_LATCH
+#include "boost_no_cxx20_hdr_latch.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_latch::test();
+}
+

test/no_cxx20_hdr_latch_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_LATCH
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_LATCH should be defined.
+// See file boost_no_cxx20_hdr_latch.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_LATCH
+#include "boost_no_cxx20_hdr_latch.ipp"
+#else
+namespace boost_no_cxx20_hdr_latch = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_latch::test();
+}
+

test/no_cxx20_hdr_numbers_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_NUMBERS
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_NUMBERS should not be defined.
+// See file boost_no_cxx20_hdr_numbers.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_NUMBERS
+#include "boost_no_cxx20_hdr_numbers.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_numbers::test();
+}
+

test/no_cxx20_hdr_numbers_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_NUMBERS
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_NUMBERS should be defined.
+// See file boost_no_cxx20_hdr_numbers.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_NUMBERS
+#include "boost_no_cxx20_hdr_numbers.ipp"
+#else
+namespace boost_no_cxx20_hdr_numbers = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_numbers::test();
+}
+

test/no_cxx20_hdr_ranges_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_RANGES
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_RANGES should not be defined.
+// See file boost_no_cxx20_hdr_ranges.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_RANGES
+#include "boost_no_cxx20_hdr_ranges.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_ranges::test();
+}
+

test/no_cxx20_hdr_ranges_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_RANGES
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_RANGES should be defined.
+// See file boost_no_cxx20_hdr_ranges.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_RANGES
+#include "boost_no_cxx20_hdr_ranges.ipp"
+#else
+namespace boost_no_cxx20_hdr_ranges = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_ranges::test();
+}
+

test/no_cxx20_hdr_semaphore_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_SEMAPHORE
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_SEMAPHORE should not be defined.
+// See file boost_no_cxx20_hdr_semaphore.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_SEMAPHORE
+#include "boost_no_cxx20_hdr_semaphore.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_semaphore::test();
+}
+

test/no_cxx20_hdr_semaphore_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_SEMAPHORE
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_SEMAPHORE should be defined.
+// See file boost_no_cxx20_hdr_semaphore.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_SEMAPHORE
+#include "boost_no_cxx20_hdr_semaphore.ipp"
+#else
+namespace boost_no_cxx20_hdr_semaphore = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_semaphore::test();
+}
+

test/no_cxx20_hdr_source_location_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_SOURCE_LOCATION
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_SOURCE_LOCATION should not be defined.
+// See file boost_no_cxx20_hdr_source_location.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_SOURCE_LOCATION
+#include "boost_no_cxx20_hdr_source_location.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_source_location::test();
+}
+

test/no_cxx20_hdr_source_location_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_SOURCE_LOCATION
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_SOURCE_LOCATION should be defined.
+// See file boost_no_cxx20_hdr_source_location.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_SOURCE_LOCATION
+#include "boost_no_cxx20_hdr_source_location.ipp"
+#else
+namespace boost_no_cxx20_hdr_source_location = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_source_location::test();
+}
+

test/no_cxx20_hdr_span_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_SPAN
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_SPAN should not be defined.
+// See file boost_no_cxx20_hdr_span.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_SPAN
+#include "boost_no_cxx20_hdr_span.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_span::test();
+}
+

test/no_cxx20_hdr_span_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_SPAN
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_SPAN should be defined.
+// See file boost_no_cxx20_hdr_span.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_SPAN
+#include "boost_no_cxx20_hdr_span.ipp"
+#else
+namespace boost_no_cxx20_hdr_span = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_span::test();
+}
+

test/no_cxx20_hdr_stop_token_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_STOP_TOKEN
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_STOP_TOKEN should not be defined.
+// See file boost_no_cxx20_hdr_stop_token.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_STOP_TOKEN
+#include "boost_no_cxx20_hdr_stop_token.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_stop_token::test();
+}
+

test/no_cxx20_hdr_stop_token_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_STOP_TOKEN
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_STOP_TOKEN should be defined.
+// See file boost_no_cxx20_hdr_stop_token.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_STOP_TOKEN
+#include "boost_no_cxx20_hdr_stop_token.ipp"
+#else
+namespace boost_no_cxx20_hdr_stop_token = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_stop_token::test();
+}
+

test/no_cxx20_hdr_syncstream_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_SYNCSTREAM
+// This file should not compile, if it does then
+// BOOST_NO_CXX20_HDR_SYNCSTREAM should not be defined.
+// See file boost_no_cxx20_hdr_syncstream.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX20_HDR_SYNCSTREAM
+#include "boost_no_cxx20_hdr_syncstream.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_syncstream::test();
+}
+

test/no_cxx20_hdr_syncstream_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Thu Mar  4 18:30:30 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX20_HDR_SYNCSTREAM
+// This file should compile, if it does not then
+// BOOST_NO_CXX20_HDR_SYNCSTREAM should be defined.
+// See file boost_no_cxx20_hdr_syncstream.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX20_HDR_SYNCSTREAM
+#include "boost_no_cxx20_hdr_syncstream.ipp"
+#else
+namespace boost_no_cxx20_hdr_syncstream = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx20_hdr_syncstream::test();
+}
+