Merge pull request #492 from Lastique/feature/cxx17_auto_nontype_temp…

…late_params

Fix Boost.Filesystem usage, add `BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS`

checks/Jamfile.v2

@@ -1,6 +1,6 @@
 #
 # *** DO NOT EDIT THIS FILE BY HAND ***
-# This file was automatically generated on Fri Oct 13 19:09:38 2023
+# This file was automatically generated on Mon Jan 22 16:16:53 2024
 #  by libs/config/tools/generate.cpp
 # Copyright John Maddock.
 # Use, modification and distribution are subject to the 
@@ -119,6 +119,7 @@ obj cxx14_return_type_deduction : test_case.cpp : <define>TEST_BOOST_NO_CXX14_RE
 obj cxx14_std_exchange : test_case.cpp : <define>TEST_BOOST_NO_CXX14_STD_EXCHANGE ;
 obj cxx14_variable_templates : test_case.cpp : <define>TEST_BOOST_NO_CXX14_VARIABLE_TEMPLATES ;
 obj cxx17 : test_case.cpp : <define>TEST_BOOST_NO_CXX17 ;
+obj cxx17_auto_nontype_template_params : test_case.cpp : <define>TEST_BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS ;
 obj cxx17_deduction_guides : test_case.cpp : <define>TEST_BOOST_NO_CXX17_DEDUCTION_GUIDES ;
 obj cxx17_fold_expressions : test_case.cpp : <define>TEST_BOOST_NO_CXX17_FOLD_EXPRESSIONS ;
 obj cxx17_hdr_any : test_case.cpp : <define>TEST_BOOST_NO_CXX17_HDR_ANY ;

checks/test_case.cpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  This file was automatically generated on Mon Jan 22 16:16:53 2024
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 
@@ -551,6 +551,11 @@
 #     error "Defect macro BOOST_NO_CXX17 is defined."
 #  endif
 #endif
+#ifdef TEST_BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#  ifdef BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#     error "Defect macro BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS is defined."
+#  endif
+#endif
 #ifdef TEST_BOOST_NO_CXX17_DEDUCTION_GUIDES
 #  ifdef BOOST_NO_CXX17_DEDUCTION_GUIDES
 #     error "Defect macro BOOST_NO_CXX17_DEDUCTION_GUIDES is defined."

doc/macro_reference.qbk

@@ -1027,6 +1027,7 @@ that are not yet supported by a particular compiler or library.
 [[`BOOST_NO_CXX17_IF_CONSTEXPR`][The compiler does not support `if constexpr`.]]
 [[`BOOST_NO_CXX17_INLINE_VARIABLES`][The compiler does not support `inline` variables.]]
 [[`BOOST_NO_CXX17_DEDUCTION_GUIDES`][The compiler does not support class template argument deduction (CTAD) guides.]]
+[[`BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS`][The compiler does not support `auto` non-type template parameters.]]
 ]
 
 [endsect]

include/boost/config/assert_cxx03.hpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  This file was automatically generated on Mon Jan 22 16:16:53 2024
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

include/boost/config/assert_cxx11.hpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  This file was automatically generated on Mon Jan 22 16:16:53 2024
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

include/boost/config/assert_cxx14.hpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  This file was automatically generated on Mon Jan 22 16:16:53 2024
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

include/boost/config/assert_cxx17.hpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  This file was automatically generated on Mon Jan 22 16:16:53 2024
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 
@@ -12,6 +12,9 @@
 #include <boost/config.hpp>
 #include <boost/config/assert_cxx14.hpp>
 
+#ifdef BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS."
+#endif
 #ifdef BOOST_NO_CXX17_DEDUCTION_GUIDES
 #  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_DEDUCTION_GUIDES."
 #endif

include/boost/config/assert_cxx20.hpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  This file was automatically generated on Mon Jan 22 16:16:53 2024
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

include/boost/config/assert_cxx23.hpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  This file was automatically generated on Mon Jan 22 16:16:53 2024
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 

include/boost/config/compiler/borland.hpp

@@ -245,6 +245,9 @@
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 
 #if __BORLANDC__ >= 0x590
 #  define BOOST_HAS_TR1_HASH

include/boost/config/compiler/clang.hpp

@@ -321,6 +321,10 @@
 #  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
 #endif
 
+#if (__clang_major__ < 4) || (__cplusplus < 201406L) /* non-standard value that is greater than 201402, which is reported by clang 4.0.0 for C++1z */
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
+
 #if __cplusplus < 201103L
 #define BOOST_NO_CXX11_SFINAE_EXPR
 #endif

include/boost/config/compiler/codegear.hpp

@@ -316,6 +316,10 @@
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
 
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
+
 //
 // TR1 macros:
 //

include/boost/config/compiler/common_edg.hpp

@@ -171,10 +171,12 @@
 #if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
 #  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
 #endif
-
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 
 #ifdef c_plusplus
 // EDG has "long long" in non-strict mode

include/boost/config/compiler/digitalmars.hpp

@@ -130,6 +130,9 @@
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 
 #if (__DMC__ <= 0x840)
 #error "Compiler not supported or configured - please reconfigure"

include/boost/config/compiler/gcc.hpp

@@ -319,6 +319,9 @@
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if (__GNUC__ < 7) || (__cplusplus < 201703L)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 
 #if __GNUC__ >= 7
 #  define BOOST_FALLTHROUGH __attribute__((fallthrough))

include/boost/config/compiler/gcc_xml.hpp

@@ -108,7 +108,8 @@
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 
 #define BOOST_COMPILER "GCC-XML C++ version " __GCCXML__
-
-

include/boost/config/compiler/hp_acc.hpp

@@ -137,6 +137,10 @@
   #define BOOST_NO_CXX11_VARIADIC_MACROS
 #endif
 
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
+
 #endif
 
 //

include/boost/config/compiler/metrowerks.hpp

@@ -173,6 +173,9 @@
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 
 #define BOOST_COMPILER "Metrowerks CodeWarrior C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
 

include/boost/config/compiler/mpw.hpp

@@ -122,6 +122,9 @@
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 
 //
 // versions check:

include/boost/config/compiler/nvcc.hpp

@@ -57,5 +57,8 @@
 #  define BOOST_NO_CXX11_NOEXCEPT
 #endif
 
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
 #endif
 
+#endif

include/boost/config/compiler/pathscale.hpp

@@ -135,4 +135,7 @@
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 #endif

include/boost/config/compiler/sunpro_cc.hpp

@@ -194,6 +194,9 @@
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 
 // Turn on threading support for Solaris 12.
 // Ticket #11972

include/boost/config/compiler/vacpp.hpp

@@ -184,3 +184,6 @@
 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
 #endif
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif

include/boost/config/compiler/visualc.hpp

@@ -263,6 +263,9 @@
 #define BOOST_NO_CXX17_INLINE_VARIABLES
 #define BOOST_NO_CXX17_FOLD_EXPRESSIONS
 #endif
+#if (_MSC_VER < 1914) || (_MSVC_LANG < 201703)
+#define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
 
 //
 // Things that don't work in clr mode:

include/boost/config/compiler/xlcpp.hpp

@@ -265,6 +265,10 @@
 #  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
 #endif
 
+#if !defined(__cpp_nontype_template_parameter_auto) || (__cpp_nontype_template_parameter_auto < 201606)
+#  define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#endif
+
 #if !__has_feature(cxx_thread_local)
 #  define BOOST_NO_CXX11_THREAD_LOCAL
 #endif

include/boost/config/compiler/xlcpp_zos.hpp

@@ -157,6 +157,7 @@
 #define BOOST_NO_CXX17_INLINE_VARIABLES
 #define BOOST_NO_CXX17_FOLD_EXPRESSIONS
 #define BOOST_NO_CXX17_IF_CONSTEXPR
+#define BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
 
 // -------------------------------------
 

include/boost/config/detail/cxx_composite.hpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  This file was automatically generated on Mon Jan 22 16:16:53 2024
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 
@@ -164,6 +164,7 @@
 #endif
 
 #if defined(BOOST_NO_CXX14)\
+   || defined(BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS)\
    || defined(BOOST_NO_CXX17_DEDUCTION_GUIDES)\
    || defined(BOOST_NO_CXX17_FOLD_EXPRESSIONS)\
    || defined(BOOST_NO_CXX17_HDR_ANY)\

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 Fri Oct 13 19:09:38 2023
+# This file was automatically generated on Mon Jan 22 16:16:53 2024
 #  by libs/config/tools/generate.cpp
 # Copyright John Maddock.
 # Use, modification and distribution are subject to the 
@@ -346,6 +346,9 @@ test-suite "BOOST_NO_CXX14_VARIABLE_TEMPLATES" :
 test-suite "BOOST_NO_CXX17" : 
 [ run ../no_cxx17_pass.cpp ]
 [ compile-fail ../no_cxx17_fail.cpp ] ;
+test-suite "BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS" : 
+[ run ../no_cxx17_auto_nontype_template_params_pass.cpp ]
+[ compile-fail ../no_cxx17_auto_nontype_template_params_fail.cpp ] ;
 test-suite "BOOST_NO_CXX17_DEDUCTION_GUIDES" : 
 [ run ../no_cxx17_deduction_guides_pass.cpp ]
 [ compile-fail ../no_cxx17_deduction_guides_fail.cpp ] ;

test/boost_no_cxx17_auto_nontype_template_params.ipp

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2024 Andrey Semashev
+ *
+ * Distributed under Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+ // MACRO: BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+ // TITLE: C++17 auto non-type template parameters
+ // DESCRIPTION: C++17 auto non-type template parameters are not supported.
+
+namespace boost_no_cxx17_auto_nontype_template_params {
+
+template< auto Value >
+struct foo
+{
+    static auto get()
+    {
+        return Value;
+    }
+};
+
+const int ten = 10;
+
+int test()
+{
+    return foo< 10 >::get() - *foo< &ten >::get();
+}
+
+} // boost_no_cxx17_auto_nontype_template_params

test/config_info.cpp

@@ -1168,6 +1168,7 @@ void print_boost_macros()
    PRINT_MACRO(BOOST_NO_CXX14_STD_EXCHANGE);
    PRINT_MACRO(BOOST_NO_CXX14_VARIABLE_TEMPLATES);
    PRINT_MACRO(BOOST_NO_CXX17);
+   PRINT_MACRO(BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS);
    PRINT_MACRO(BOOST_NO_CXX17_DEDUCTION_GUIDES);
    PRINT_MACRO(BOOST_NO_CXX17_FOLD_EXPRESSIONS);
    PRINT_MACRO(BOOST_NO_CXX17_HDR_ANY);
@@ -1287,6 +1288,7 @@ void print_boost_macros()
 
 
 
+
    // END GENERATED BLOCK
 
    PRINT_MACRO(BOOST_CXX_VERSION);

test/config_test.cpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  This file was automatically generated on Mon Jan 22 16:16:53 2024
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-21.
 //  Use, modification and distribution are subject to the 
@@ -377,6 +377,11 @@ namespace boost_no_cxx14_variable_templates = empty_boost;
 #else
 namespace boost_no_cxx17 = empty_boost;
 #endif
+#ifndef BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS
+#include "boost_no_cxx17_auto_nontype_template_params.ipp"
+#else
+namespace boost_no_cxx17_auto_nontype_template_params = empty_boost;
+#endif
 #ifndef BOOST_NO_CXX17_DEDUCTION_GUIDES
 #include "boost_no_cxx17_deduction_guides.ipp"
 #else
@@ -1741,6 +1746,11 @@ int main( int, char *[] )
       std::cerr << "Failed test for BOOST_NO_CXX17 at: " << __FILE__ << ":" << __LINE__ << std::endl;
       ++error_count;
    }
+   if(0 != boost_no_cxx17_auto_nontype_template_params::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX17_AUTO_NONTYPE_TEMPLATE_PARAMS at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
    if(0 != boost_no_cxx17_deduction_guides::test())
    {
       std::cerr << "Failed test for BOOST_NO_CXX17_DEDUCTION_GUIDES at: " << __FILE__ << ":" << __LINE__ << std::endl;