Add BOOST_NO_CXX17_FOLD_EXPRESSIONS detection

checks/Jamfile.v2

@@ -1,6 +1,6 @@
 #
 # *** DO NOT EDIT THIS FILE BY HAND ***
-# This file was automatically generated on Mon May 29 10:00:26 2017
+# This file was automatically generated on Mon May 29 10:27:35 2017
 #  by libs/config/tools/generate.cpp
 # Copyright John Maddock.
 # Use, modification and distribution are subject to the 
@@ -109,6 +109,7 @@ obj cxx14_aggregate_nsdmi : test_case.cpp : <define>TEST_BOOST_NO_CXX14_AGGREGAT
 obj cxx14_return_type_deduction : test_case.cpp : <define>TEST_BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION ;
 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_fold_expressions : test_case.cpp : <define>TEST_BOOST_NO_CXX17_FOLD_EXPRESSIONS ;
 obj cxx17_inline_variables : test_case.cpp : <define>TEST_BOOST_NO_CXX17_INLINE_VARIABLES ;
 obj cxx17_std_apply : test_case.cpp : <define>TEST_BOOST_NO_CXX17_STD_APPLY ;
 obj cxx17_std_invoke : test_case.cpp : <define>TEST_BOOST_NO_CXX17_STD_INVOKE ;

checks/test_case.cpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Mon May 29 10:00:26 2017
+//  This file was automatically generated on Mon May 29 10:27:35 2017
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-4.
 //  Use, modification and distribution are subject to the 
@@ -501,6 +501,11 @@
 #     error "Defect macro BOOST_NO_CXX14_VARIABLE_TEMPLATES is defined."
 #  endif
 #endif
+#ifdef TEST_BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#  ifdef BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#     error "Defect macro BOOST_NO_CXX17_FOLD_EXPRESSIONS is defined."
+#  endif
+#endif
 #ifdef TEST_BOOST_NO_CXX17_INLINE_VARIABLES
 #  ifdef BOOST_NO_CXX17_INLINE_VARIABLES
 #     error "Defect macro BOOST_NO_CXX17_INLINE_VARIABLES is defined."

include/boost/config/compiler/borland.hpp

@@ -235,6 +235,9 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 
 #if __BORLANDC__ >= 0x590
 #  define BOOST_HAS_TR1_HASH

include/boost/config/compiler/clang.hpp

@@ -293,6 +293,7 @@
 // Clang 3.9+ in c++1z
 #if !__has_cpp_attribute(fallthrough) || __cplusplus < 201406L
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
 #endif
 
 #if __cplusplus < 201103L

include/boost/config/compiler/codegear.hpp

@@ -163,6 +163,10 @@
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
 
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+
 //
 // TR1 macros:
 //

include/boost/config/compiler/common_edg.hpp

@@ -145,6 +145,9 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 
 #ifdef c_plusplus
 // EDG has "long long" in non-strict mode

include/boost/config/compiler/digitalmars.hpp

@@ -121,6 +121,9 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 
 #if (__DMC__ <= 0x840)
 #error "Compiler not supported or configured - please reconfigure"

include/boost/config/compiler/gcc.hpp

@@ -295,6 +295,9 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 
 //
 // Unused attribute:

include/boost/config/compiler/gcc_xml.hpp

@@ -99,6 +99,9 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 
 #define BOOST_COMPILER "GCC-XML C++ version " __GCCXML__
 

include/boost/config/compiler/metrowerks.hpp

@@ -164,6 +164,9 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 
 #define BOOST_COMPILER "Metrowerks CodeWarrior C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
 

include/boost/config/compiler/mpw.hpp

@@ -113,6 +113,9 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 
 //
 // versions check:

include/boost/config/compiler/pathscale.hpp

@@ -126,4 +126,7 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 #endif

include/boost/config/compiler/pgi.hpp

@@ -159,6 +159,9 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 //
 // version check:
 // probably nothing to do here?

include/boost/config/compiler/sunpro_cc.hpp

@@ -179,6 +179,9 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
 
 // Turn on threading support for Solaris 12.
 // Ticket #11972

include/boost/config/compiler/vacpp.hpp

@@ -170,3 +170,6 @@
 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
 #endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif

include/boost/config/compiler/visualc.hpp

@@ -221,6 +221,7 @@
 // C++ 17:
 #define BOOST_NO_CXX17_STRUCTURED_BINDINGS
 #define BOOST_NO_CXX17_INLINE_VARIABLES
+#define BOOST_NO_CXX17_FOLD_EXPRESSIONS
 
 //
 // Things that don't work in clr mode:

include/boost/config/compiler/xlcpp.hpp

@@ -249,6 +249,7 @@
 // Clang 3.9+ in c++1z
 #if !__has_cpp_attribute(fallthrough) || __cplusplus < 201406L
 #  define BOOST_NO_CXX17_INLINE_VARIABLES
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
 #endif
 
 #if !__has_feature(cxx_thread_local)

include/boost/config/compiler/xlcpp_zos.hpp

@@ -152,6 +152,7 @@
 #define BOOST_NO_CXX14_BINARY_LITERALS
 #define BOOST_NO_CXX17_STRUCTURED_BINDINGS
 #define BOOST_NO_CXX17_INLINE_VARIABLES
+#define BOOST_NO_CXX17_FOLD_EXPRESSIONS
 
 // -------------------------------------
 

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 Mon May 29 10:00:26 2017
+# This file was automatically generated on Mon May 29 10:27:35 2017
 #  by libs/config/tools/generate.cpp
 # Copyright John Maddock.
 # Use, modification and distribution are subject to the 
@@ -316,6 +316,9 @@ test-suite "BOOST_NO_CXX14_STD_EXCHANGE" :
 test-suite "BOOST_NO_CXX14_VARIABLE_TEMPLATES" : 
 [ run ../no_cxx14_var_templ_pass.cpp ]
 [ compile-fail ../no_cxx14_var_templ_fail.cpp ] ;
+test-suite "BOOST_NO_CXX17_FOLD_EXPRESSIONS" : 
+[ run ../no_cxx17_fold_expressions_pass.cpp ]
+[ compile-fail ../no_cxx17_fold_expressions_fail.cpp ] ;
 test-suite "BOOST_NO_CXX17_INLINE_VARIABLES" : 
 [ run ../no_cxx17_inline_variables_pass.cpp ]
 [ compile-fail ../no_cxx17_inline_variables_fail.cpp ] ;

test/boost_no_cxx17_fold_expressions.ipp

@@ -0,0 +1,27 @@
+/*
+Copyright 2017 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+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_FOLD_EXPRESSIONS
+// TITLE: C++17 fold expressions
+// DESCRIPTION: C++17 fold expressions are not supported.
+
+namespace boost_no_cxx17_fold_expressions {
+
+template<class... Args>
+auto sum(Args&&... args)
+{
+    return (args + ... + 0);
+}
+
+int test()
+{
+    return sum(1, -1, 1, 1, -1, -1);
+}
+
+} /* boost_no_cxx17_fold_expressions */

test/config_info.cpp

@@ -1067,6 +1067,7 @@ void print_boost_macros()
    PRINT_MACRO(BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION);
    PRINT_MACRO(BOOST_NO_CXX14_STD_EXCHANGE);
    PRINT_MACRO(BOOST_NO_CXX14_VARIABLE_TEMPLATES);
+   PRINT_MACRO(BOOST_NO_CXX17_FOLD_EXPRESSIONS);
    PRINT_MACRO(BOOST_NO_CXX17_INLINE_VARIABLES);
    PRINT_MACRO(BOOST_NO_CXX17_STD_APPLY);
    PRINT_MACRO(BOOST_NO_CXX17_STD_INVOKE);
@@ -1160,6 +1161,7 @@ void print_boost_macros()
 
 
 
+
 
 
    // END GENERATED BLOCK

test/config_test.cpp

@@ -1,4 +1,4 @@
-//  This file was automatically generated on Mon May 29 10:00:26 2017
+//  This file was automatically generated on Mon May 29 10:27:35 2017
 //  by libs/config/tools/generate.cpp
 //  Copyright John Maddock 2002-4.
 //  Use, modification and distribution are subject to the 
@@ -332,6 +332,11 @@ namespace boost_no_cxx14_std_exchange = empty_boost;
 #else
 namespace boost_no_cxx14_variable_templates = empty_boost;
 #endif
+#ifndef BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#include "boost_no_cxx17_fold_expressions.ipp"
+#else
+namespace boost_no_cxx17_fold_expressions = empty_boost;
+#endif
 #ifndef BOOST_NO_CXX17_INLINE_VARIABLES
 #include "boost_no_cxx17_inline_variables.ipp"
 #else
@@ -1461,6 +1466,11 @@ int main( int, char *[] )
       std::cerr << "Failed test for BOOST_NO_CXX14_VARIABLE_TEMPLATES at: " << __FILE__ << ":" << __LINE__ << std::endl;
       ++error_count;
    }
+   if(0 != boost_no_cxx17_fold_expressions::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX17_FOLD_EXPRESSIONS at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
    if(0 != boost_no_cxx17_inline_variables::test())
    {
       std::cerr << "Failed test for BOOST_NO_CXX17_INLINE_VARIABLES at: " << __FILE__ << ":" << __LINE__ << std::endl;

test/no_cxx17_fold_expressions_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Mon May 29 10:27:35 2017
+//  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_CXX17_FOLD_EXPRESSIONS
+// This file should not compile, if it does then
+// BOOST_NO_CXX17_FOLD_EXPRESSIONS should not be defined.
+// See file boost_no_cxx17_fold_expressions.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_CXX17_FOLD_EXPRESSIONS
+#include "boost_no_cxx17_fold_expressions.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx17_fold_expressions::test();
+}
+

test/no_cxx17_fold_expressions_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Mon May 29 10:27:35 2017
+//  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_CXX17_FOLD_EXPRESSIONS
+// This file should compile, if it does not then
+// BOOST_NO_CXX17_FOLD_EXPRESSIONS should be defined.
+// See file boost_no_cxx17_fold_expressions.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_CXX17_FOLD_EXPRESSIONS
+#include "boost_no_cxx17_fold_expressions.ipp"
+#else
+namespace boost_no_cxx17_fold_expressions = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx17_fold_expressions::test();
+}
+