boostorg · jzmaddock · Jul 12, 2026 · Jul 11, 2026 · Jul 11, 2026 · Jul 11, 2026
diff --git a/checks/Jamfile.v2 b/checks/Jamfile.v2
@@ -1,6 +1,6 @@
 #
 # *** DO NOT EDIT THIS FILE BY HAND ***
-# This file was automatically generated on Sat Jul 11 11:23:56 2026
+# This file was automatically generated on Sat Jul 11 16:20:44 2026
 #  by libs/config/tools/generate.cpp
 # Copyright John Maddock.
 # Use, modification and distribution are subject to the 
@@ -162,6 +162,15 @@ obj cxx23_hdr_print : test_case.cpp /boost/config//boost_config : <define>TEST_B
 obj cxx23_hdr_spanstream : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX23_HDR_SPANSTREAM ;
 obj cxx23_hdr_stacktrace : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX23_HDR_STACKTRACE ;
 obj cxx23_hdr_stdfloat : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX23_HDR_STDFLOAT ;
+obj cxx26_hdr_contracts : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX26_HDR_CONTRACTS ;
+obj cxx26_hdr_debugging : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX26_HDR_DEBUGGING ;
+obj cxx26_hdr_hazard_pointer : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX26_HDR_HAZARD_POINTER ;
+obj cxx26_hdr_hive : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX26_HDR_HIVE ;
+obj cxx26_hdr_inplace_vector : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX26_HDR_INPLACE_VECTOR ;
+obj cxx26_hdr_linalg : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX26_HDR_LINALG ;
+obj cxx26_hdr_rcu : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX26_HDR_RCU ;
+obj cxx26_hdr_simd : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX26_HDR_SIMD ;
+obj cxx26_hdr_text_encoding : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX26_HDR_TEXT_ENCODING ;
 obj cxx98_binders : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX98_BINDERS ;
 obj cxx98_function_base : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX98_FUNCTION_BASE ;
 obj cxx98_random_shuffle : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX98_RANDOM_SHUFFLE ;
@@ -248,8 +257,44 @@ obj cxx11_variadic_macros : test_case.cpp /boost/config//boost_config : <define>
 obj cxx11_variadic_templates : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_CXX11_VARIADIC_TEMPLATES ;
 obj void_returns : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_VOID_RETURNS ;
 obj intrinsic_wchar_t : test_case.cpp /boost/config//boost_config : <define>TEST_BOOST_NO_INTRINSIC_WCHAR_T ;
+obj cpp_constexpr_26 : std/cpp_constexpr_26.cpp ;
+alias cpp_constexpr : cpp_constexpr_26 ;
+obj cpp_constexpr_exceptions_26 : std/cpp_constexpr_exceptions_26.cpp ;
+alias cpp_constexpr_exceptions : cpp_constexpr_exceptions_26 ;
+obj cpp_constexpr_virtual_inheritance_26 : std/cpp_constexpr_virtual_inheritance_26.cpp ;
+alias cpp_constexpr_virtual_inheritance : cpp_constexpr_virtual_inheritance_26 ;
+obj cpp_contracts_26 : std/cpp_contracts_26.cpp ;
+alias cpp_contracts : cpp_contracts_26 ;
+obj cpp_deleted_function_26 : std/cpp_deleted_function_26.cpp ;
+alias cpp_deleted_function : cpp_deleted_function_26 ;
+obj cpp_expansion_statements_26 : std/cpp_expansion_statements_26.cpp ;
+alias cpp_expansion_statements : cpp_expansion_statements_26 ;
+obj cpp_fold_expressions_26 : std/cpp_fold_expressions_26.cpp ;
+alias cpp_fold_expressions : cpp_fold_expressions_26 ;
+obj cpp_impl_reflection_26 : std/cpp_impl_reflection_26.cpp ;
+alias cpp_impl_reflection : cpp_impl_reflection_26 ;
+obj cpp_pack_indexing_26 : std/cpp_pack_indexing_26.cpp ;
+alias cpp_pack_indexing : cpp_pack_indexing_26 ;
+obj cpp_placeholder_variables_26 : std/cpp_placeholder_variables_26.cpp ;
+alias cpp_placeholder_variables : cpp_placeholder_variables_26 ;
+obj cpp_pp_embed_26 : std/cpp_pp_embed_26.cpp ;
+alias cpp_pp_embed : cpp_pp_embed_26 ;
+obj cpp_static_assert_26 : std/cpp_static_assert_26.cpp ;
+alias cpp_static_assert : cpp_static_assert_26 ;
+obj cpp_structured_bindings_26 : std/cpp_structured_bindings_26.cpp ;
+alias cpp_structured_bindings : cpp_structured_bindings_26 ;
+obj cpp_trivial_union_26 : std/cpp_trivial_union_26.cpp ;
+alias cpp_trivial_union : cpp_trivial_union_26 ;
+obj cpp_variadic_friend_26 : std/cpp_variadic_friend_26.cpp ;
+alias cpp_variadic_friend : cpp_variadic_friend_26 ;
+obj cpp_auto_cast_23 : std/cpp_auto_cast_23.cpp ;
+alias cpp_auto_cast : cpp_auto_cast_23 ;
+obj cpp_char8_t_23 : std/cpp_char8_t_23.cpp ;
+alias cpp_char8_t : cpp_char8_t_23 ;
 obj cpp_consteval_23 : std/cpp_consteval_23.cpp ;
 alias cpp_consteval : cpp_consteval_23 ;
+obj cpp_constexpr_23 : std/cpp_constexpr_23.cpp ;
+alias cpp_constexpr : cpp_constexpr_23 ;
 obj cpp_explicit_this_parameter_23 : std/cpp_explicit_this_parameter_23.cpp ;
 alias cpp_explicit_this_parameter : cpp_explicit_this_parameter_23 ;
 obj cpp_if_consteval_23 : std/cpp_if_consteval_23.cpp ;

diff --git a/checks/std/cpp_aggregate_bases_17.cpp b/checks/std/cpp_aggregate_bases_17.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_aggregate_nsdmi_14.cpp b/checks/std/cpp_aggregate_nsdmi_14.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_alias_templates_11.cpp b/checks/std/cpp_alias_templates_11.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_aligned_new_17.cpp b/checks/std/cpp_aligned_new_17.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_attributes_11.cpp b/checks/std/cpp_attributes_11.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_auto_cast_23.cpp b/checks/std/cpp_auto_cast_23.cpp
@@ -0,0 +1,30 @@
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  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 $Id$
+//
+
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
+#ifndef __cpp_auto_cast
+#error "Macro << __cpp_auto_cast is not set"
+#endif
+
+#if __cpp_auto_cast < 202110
+#error "Macro __cpp_auto_cast had too low a value"
+#endif
+
+int main( int, char *[] )
+{
+   return 0;
+}
+
diff --git a/checks/std/cpp_binary_literals_14.cpp b/checks/std/cpp_binary_literals_14.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_capture_star_this_17.cpp b/checks/std/cpp_capture_star_this_17.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_char8_t_20.cpp b/checks/std/cpp_char8_t_20.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_char8_t_23.cpp b/checks/std/cpp_char8_t_23.cpp
@@ -0,0 +1,30 @@
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  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 $Id$
+//
+
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
+#ifndef __cpp_char8_t
+#error "Macro << __cpp_char8_t is not set"
+#endif
+
+#if __cpp_char8_t < 202207
+#error "Macro __cpp_char8_t had too low a value"
+#endif
+
+int main( int, char *[] )
+{
+   return 0;
+}
+
diff --git a/checks/std/cpp_concepts_20.cpp b/checks/std/cpp_concepts_20.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_conditional_explicit_20.cpp b/checks/std/cpp_conditional_explicit_20.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_consteval_23.cpp b/checks/std/cpp_consteval_23.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_constexpr_11.cpp b/checks/std/cpp_constexpr_11.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_constexpr_14.cpp b/checks/std/cpp_constexpr_14.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_constexpr_17.cpp b/checks/std/cpp_constexpr_17.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_constexpr_23.cpp b/checks/std/cpp_constexpr_23.cpp
@@ -0,0 +1,30 @@
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  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 $Id$
+//
+
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
+#ifndef __cpp_constexpr
+#error "Macro << __cpp_constexpr is not set"
+#endif
+
+#if __cpp_constexpr < 202211
+#error "Macro __cpp_constexpr had too low a value"
+#endif
+
+int main( int, char *[] )
+{
+   return 0;
+}
+
diff --git a/checks/std/cpp_constexpr_26.cpp b/checks/std/cpp_constexpr_26.cpp
@@ -0,0 +1,30 @@
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  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 $Id$
+//
+
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
+#ifndef __cpp_constexpr
+#error "Macro << __cpp_constexpr is not set"
+#endif
+
+#if __cpp_constexpr < 202406
+#error "Macro __cpp_constexpr had too low a value"
+#endif
+
+int main( int, char *[] )
+{
+   return 0;
+}
+
diff --git a/checks/std/cpp_constexpr_exceptions_26.cpp b/checks/std/cpp_constexpr_exceptions_26.cpp
@@ -0,0 +1,30 @@
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  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 $Id$
+//
+
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
+#ifndef __cpp_constexpr_exceptions
+#error "Macro << __cpp_constexpr_exceptions is not set"
+#endif
+
+#if __cpp_constexpr_exceptions < 202411
+#error "Macro __cpp_constexpr_exceptions had too low a value"
+#endif
+
+int main( int, char *[] )
+{
+   return 0;
+}
+
diff --git a/checks/std/cpp_constexpr_virtual_inheritance_26.cpp b/checks/std/cpp_constexpr_virtual_inheritance_26.cpp
@@ -0,0 +1,30 @@
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  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 $Id$
+//
+
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
+#ifndef __cpp_constexpr_virtual_inheritance
+#error "Macro << __cpp_constexpr_virtual_inheritance is not set"
+#endif
+
+#if __cpp_constexpr_virtual_inheritance < 202506
+#error "Macro __cpp_constexpr_virtual_inheritance had too low a value"
+#endif
+
+int main( int, char *[] )
+{
+   return 0;
+}
+
diff --git a/checks/std/cpp_contracts_26.cpp b/checks/std/cpp_contracts_26.cpp
@@ -0,0 +1,30 @@
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  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 $Id$
+//
+
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
+#ifndef __cpp_contracts
+#error "Macro << __cpp_contracts is not set"
+#endif
+
+#if __cpp_contracts < 202606
+#error "Macro __cpp_contracts had too low a value"
+#endif
+
+int main( int, char *[] )
+{
+   return 0;
+}
+
diff --git a/checks/std/cpp_decltype_11.cpp b/checks/std/cpp_decltype_11.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_decltype_auto_14.cpp b/checks/std/cpp_decltype_auto_14.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_deduction_guides_17.cpp b/checks/std/cpp_deduction_guides_17.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

diff --git a/checks/std/cpp_delegating_constructors_11.cpp b/checks/std/cpp_delegating_constructors_11.cpp
@@ -1,4 +1,4 @@
-//  This file was automatically generated on Sat Jul 11 11:23:56 2026
+//  This file was automatically generated on Sat Jul 11 16:20:44 2026
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the