Merge pull request #459 from boostorg/feature/boost-no-cxx11-alignof

Add BOOST_NO_CXX11_ALIGNOF. Closes #427.

doc/macro_reference.qbk

@@ -656,6 +656,7 @@ that are not yet supported by a particular compiler or library.
 
 [[`BOOST_NO_CXX11_ADDRESSOF`][The standard library header <memory> has no working std::addressof.]]
 [[`BOOST_NO_CXX11_ALIGNAS`][The compiler does not support the `alignas` keyword.]]
+[[`BOOST_NO_CXX11_ALIGNOF`][The compiler does not support the `alignof` keyword.]]
 [[`BOOST_NO_CXX11_ALLOCATOR`][The standard library does not provide a C++11 version of `std::allocator` in <memory>.]]
 [[`BOOST_NO_CXX11_ATOMIC_SMART_PTR`][The standard library <memory> does not support atomic smart pointer operations.]]
 [[`BOOST_NO_CXX11_AUTO_DECLARATIONS`][The compiler does not support

include/boost/config/compiler/borland.hpp

@@ -194,6 +194,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/clang.hpp

@@ -240,6 +240,10 @@
 #  define BOOST_NO_CXX11_ALIGNAS
 #endif
 
+#if !__has_feature(cxx_alignof)
+#  define BOOST_NO_CXX11_ALIGNOF
+#endif
+
 #if !__has_feature(cxx_trailing_return)
 #  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #endif

include/boost/config/compiler/codegear.hpp

@@ -260,6 +260,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/common_edg.hpp

@@ -92,6 +92,7 @@
 #define BOOST_NO_CXX11_TEMPLATE_ALIASES
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/cray.hpp

@@ -375,6 +375,7 @@
 
 #if __cplusplus >= 201103L
 #undef  BOOST_NO_CXX11_ALIGNAS
+#undef  BOOST_NO_CXX11_ALIGNOF
 #undef  BOOST_NO_CXX11_DECLTYPE_N3276
 #define BOOST_NO_CXX11_HDR_ATOMIC
 #undef  BOOST_NO_CXX11_HDR_FUNCTIONAL

include/boost/config/compiler/digitalmars.hpp

@@ -79,6 +79,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/gcc.hpp

@@ -219,6 +219,7 @@
 #  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
 #  define BOOST_NO_CXX11_RAW_LITERALS
 #  define BOOST_NO_CXX11_UNICODE_LITERALS
+#  define BOOST_NO_CXX11_ALIGNOF
 #endif
 
 // C++0x features in 4.5.1 and later

include/boost/config/compiler/gcc_xml.hpp

@@ -57,6 +57,7 @@
 #  define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #  define BOOST_NO_CXX11_ALIGNAS
+#  define BOOST_NO_CXX11_ALIGNOF
 #  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #  define BOOST_NO_CXX11_INLINE_NAMESPACES
 #  define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/hp_acc.hpp

@@ -121,6 +121,7 @@
 #define BOOST_NO_CXX11_VARIADIC_TEMPLATES
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/intel.hpp

@@ -483,6 +483,7 @@ template<> struct assert_intrinsic_wchar_t<unsigned short> {};
 // BOOST_NO_CXX11_ALIGNAS
 #if (BOOST_INTEL_CXX_VERSION >= 1500) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40800)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 190021730))
 #  undef BOOST_NO_CXX11_ALIGNAS
+#  undef BOOST_NO_CXX11_ALIGNOF
 #endif
 
 // BOOST_NO_CXX11_TRAILING_RESULT_TYPES

include/boost/config/compiler/metrowerks.hpp

@@ -122,6 +122,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/mpw.hpp

@@ -71,6 +71,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/pathscale.hpp

@@ -84,6 +84,7 @@
 #  define BOOST_NO_CXX11_HDR_CHRONO
 #  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #  define BOOST_NO_CXX11_ALIGNAS
+#  define BOOST_NO_CXX11_ALIGNOF
 #  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #  define BOOST_NO_CXX11_INLINE_NAMESPACES
 #  define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/sunpro_cc.hpp

@@ -126,6 +126,7 @@
 #define BOOST_NO_CXX11_TEMPLATE_ALIASES
 #define BOOST_NO_CXX11_UNICODE_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_FINAL

include/boost/config/compiler/vacpp.hpp

@@ -133,6 +133,7 @@
 #  define BOOST_NO_CXX11_VARIADIC_MACROS
 #endif
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/visualc.hpp

@@ -183,6 +183,7 @@
 #  define BOOST_NO_CXX11_REF_QUALIFIERS
 #  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #  define BOOST_NO_CXX11_ALIGNAS
+#  define BOOST_NO_CXX11_ALIGNOF
 #  define BOOST_NO_CXX11_INLINE_NAMESPACES
 #  define BOOST_NO_CXX11_CHAR16_T
 #  define BOOST_NO_CXX11_CHAR32_T

include/boost/config/compiler/xlcpp.hpp

@@ -184,6 +184,10 @@
 #  define BOOST_NO_CXX11_ALIGNAS
 #endif
 
+#if !__has_feature(cxx_alignof)
+#  define BOOST_NO_CXX11_ALIGNOF
+#endif
+
 #if !__has_feature(cxx_trailing_return)
 #  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #endif

include/boost/config/compiler/xlcpp_zos.hpp

@@ -142,6 +142,7 @@
 #define BOOST_NO_CXX11_FINAL
 #define BOOST_NO_CXX11_OVERRIDE
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_UNRESTRICTED_UNION
 #define BOOST_NO_CXX14_VARIABLE_TEMPLATES
 #define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION

test/all/Jamfile.v2

@@ -193,6 +193,9 @@ test-suite "BOOST_NO_CXX11_ADDRESSOF" :
 test-suite "BOOST_NO_CXX11_ALIGNAS" : 
 [ run ../no_cxx11_alignas_pass.cpp ]
 [ compile-fail ../no_cxx11_alignas_fail.cpp ] ;
+test-suite "BOOST_NO_CXX11_ALIGNOF" : 
+[ run ../no_cxx11_alignof_pass.cpp ]
+[ compile-fail ../no_cxx11_alignof_fail.cpp ] ;
 test-suite "BOOST_NO_CXX11_ALLOCATOR" : 
 [ run ../no_cxx11_allocator_pass.cpp ]
 [ compile-fail ../no_cxx11_allocator_fail.cpp ] ;

test/boost_no_cxx11_alignof.ipp

@@ -0,0 +1,20 @@
+//  Copyright Peter Dimov 2022
+
+//  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_CXX11_ALIGNOF
+//  TITLE:         C++11 alignof keyword.
+//  DESCRIPTION:   The compiler does not support the C++11 alignof keyword.
+
+namespace boost_no_cxx11_alignof {
+
+int test()
+{
+    return alignof(int) == alignof(int(&)[2])? 0: 1;
+}
+
+}

test/config_info.cpp

@@ -1089,6 +1089,7 @@ void print_boost_macros()
    PRINT_MACRO(BOOST_NO_CXX11);
    PRINT_MACRO(BOOST_NO_CXX11_ADDRESSOF);
    PRINT_MACRO(BOOST_NO_CXX11_ALIGNAS);
+   PRINT_MACRO(BOOST_NO_CXX11_ALIGNOF);
    PRINT_MACRO(BOOST_NO_CXX11_ALLOCATOR);
    PRINT_MACRO(BOOST_NO_CXX11_ATOMIC_SMART_PTR);
    PRINT_MACRO(BOOST_NO_CXX11_AUTO_DECLARATIONS);

test/config_test.cpp

@@ -122,6 +122,11 @@ namespace boost_no_cxx11_addressof = empty_boost;
 #else
 namespace boost_no_cxx11_alignas = empty_boost;
 #endif
+#ifndef BOOST_NO_CXX11_ALIGNOF
+#include "boost_no_cxx11_alignof.ipp"
+#else
+namespace boost_no_cxx11_alignof = empty_boost;
+#endif
 #ifndef BOOST_NO_CXX11_ALLOCATOR
 #include "boost_no_cxx11_allocator.ipp"
 #else
@@ -1436,6 +1441,11 @@ int main( int, char *[] )
       std::cerr << "Failed test for BOOST_NO_CXX11_ALIGNAS at: " << __FILE__ << ":" << __LINE__ << std::endl;
       ++error_count;
    }
+   if(0 != boost_no_cxx11_alignof::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX11_ALIGNOF at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
    if(0 != boost_no_cxx11_allocator::test())
    {
       std::cerr << "Failed test for BOOST_NO_CXX11_ALLOCATOR at: " << __FILE__ << ":" << __LINE__ << std::endl;

test/no_cxx11_alignof_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Sun Apr 28 18:36:48 2013
+//  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_CXX11_ALIGNOF
+// This file should not compile, if it does then
+// BOOST_NO_CXX11_ALIGNOF should not be defined.
+// See file boost_no_cxx11_alignof.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_CXX11_ALIGNOF
+#include "boost_no_cxx11_alignof.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx11_alignof::test();
+}
+

test/no_cxx11_alignof_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Sun Apr 28 18:36:48 2013
+//  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_CXX11_ALIGNOF
+// This file should compile, if it does not then
+// BOOST_NO_CXX11_ALIGNOF should be defined.
+// See file boost_no_cxx11_alignof.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_CXX11_ALIGNOF
+#include "boost_no_cxx11_alignof.ipp"
+#else
+namespace boost_no_cxx11_alignof = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx11_alignof::test();
+}
+