-// Copyright David Abrahams 2002. Permission to copy, use,
-// modify, sell and distribute this software is granted provided this
-// copyright notice appears in all copies. This software is provided
-// "as is" without express or implied warranty, and with no claim as
-// to its suitability for any purpose.
+// Copyright David Abrahams 2002.
+// Distributed under 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)
#ifndef WORKAROUND_DWA2002126_HPP
# define WORKAROUND_DWA2002126_HPP
//
// Usage:
//
-// #if BOOST_WORKAROUND(BOOST_MSVC, <= 1200)
+// #if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+// // workaround for eVC4 and VC6
// ... // workaround code here
// #endif
//
// first argument must be undefined or expand to a numeric
// value. The above expands to:
//
-// (BOOST_MSVC) != 0 && (BOOST_MSVC) <= 1200
+// (BOOST_MSVC) != 0 && (BOOST_MSVC) < 1300
//
-// When used for workarounds on the latest known version of a
-// compiler, the following convention should be observed:
+// When used for workarounds that apply to the latest known version
+// and all earlier versions of a compiler, the following convention
+// should be observed:
//
// #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1301))
//
// The version number in this case corresponds to the last version in
-// which the workaround was known to have been required. It only has
-// value as a comment unless BOOST_DETECT_OUTDATED_WORKAROUNDS is
-// defined, in which case a compiler warning or error will be issued
-// when the compiler version exceeds the argument to BOOST_TESTED_AT
+// which the workaround was known to have been required. When
+// BOOST_DETECT_OUTDATED_WORKAROUNDS is not the defined, the macro
+// BOOST_TESTED_AT(x) expands to "!= 0", which effectively activates
+// the workaround for any version of the compiler. When
+// BOOST_DETECT_OUTDATED_WORKAROUNDS is defined, a compiler warning or
+// error will be issued if the compiler version exceeds the argument
+// to BOOST_TESTED_AT(). This can be used to locate workarounds which
+// may be obsoleted by newer versions.
# ifndef BOOST_STRICT_CONFIG
+#include <boost/config.hpp>
+
+#ifndef __BORLANDC__
+#define __BORLANDC___WORKAROUND_GUARD 1
+#else
+#define __BORLANDC___WORKAROUND_GUARD 0
+#endif
+#ifndef __CODEGEARC__
+#define __CODEGEARC___WORKAROUND_GUARD 1
+#else
+#define __CODEGEARC___WORKAROUND_GUARD 0
+#endif
+#ifndef _MSC_VER
+#define _MSC_VER_WORKAROUND_GUARD 1
+#else
+#define _MSC_VER_WORKAROUND_GUARD 0
+#endif
+#ifndef _MSC_FULL_VER
+#define _MSC_FULL_VER_WORKAROUND_GUARD 1
+#else
+#define _MSC_FULL_VER_WORKAROUND_GUARD 0
+#endif
+#ifndef BOOST_MSVC
+#define BOOST_MSVC_WORKAROUND_GUARD 1
+#else
+#define BOOST_MSVC_WORKAROUND_GUARD 0
+#endif
+#ifndef __GNUC__
+#define __GNUC___WORKAROUND_GUARD 1
+#else
+#define __GNUC___WORKAROUND_GUARD 0
+#endif
+#ifndef __GNUC_MINOR__
+#define __GNUC_MINOR___WORKAROUND_GUARD 1
+#else
+#define __GNUC_MINOR___WORKAROUND_GUARD 0
+#endif
+#ifndef __GNUC_PATCHLEVEL__
+#define __GNUC_PATCHLEVEL___WORKAROUND_GUARD 1
+#else
+#define __GNUC_PATCHLEVEL___WORKAROUND_GUARD 0
+#endif
+#ifndef __IBMCPP__
+#define __IBMCPP___WORKAROUND_GUARD 1
+#else
+#define __IBMCPP___WORKAROUND_GUARD 0
+#endif
+#ifndef __SUNPRO_CC
+#define __SUNPRO_CC_WORKAROUND_GUARD 1
+#else
+#define __SUNPRO_CC_WORKAROUND_GUARD 0
+#endif
+#ifndef __DECCXX_VER
+#define __DECCXX_VER_WORKAROUND_GUARD 1
+#else
+#define __DECCXX_VER_WORKAROUND_GUARD 0
+#endif
+#ifndef __MWERKS__
+#define __MWERKS___WORKAROUND_GUARD 1
+#else
+#define __MWERKS___WORKAROUND_GUARD 0
+#endif
+#ifndef __EDG__
+#define __EDG___WORKAROUND_GUARD 1
+#else
+#define __EDG___WORKAROUND_GUARD 0
+#endif
+#ifndef __EDG_VERSION__
+#define __EDG_VERSION___WORKAROUND_GUARD 1
+#else
+#define __EDG_VERSION___WORKAROUND_GUARD 0
+#endif
+#ifndef __HP_aCC
+#define __HP_aCC_WORKAROUND_GUARD 1
+#else
+#define __HP_aCC_WORKAROUND_GUARD 0
+#endif
+#ifndef __hpxstd98
+#define __hpxstd98_WORKAROUND_GUARD 1
+#else
+#define __hpxstd98_WORKAROUND_GUARD 0
+#endif
+#ifndef _CRAYC
+#define _CRAYC_WORKAROUND_GUARD 1
+#else
+#define _CRAYC_WORKAROUND_GUARD 0
+#endif
+#ifndef __DMC__
+#define __DMC___WORKAROUND_GUARD 1
+#else
+#define __DMC___WORKAROUND_GUARD 0
+#endif
+#ifndef MPW_CPLUS
+#define MPW_CPLUS_WORKAROUND_GUARD 1
+#else
+#define MPW_CPLUS_WORKAROUND_GUARD 0
+#endif
+#ifndef __COMO__
+#define __COMO___WORKAROUND_GUARD 1
+#else
+#define __COMO___WORKAROUND_GUARD 0
+#endif
+#ifndef __COMO_VERSION__
+#define __COMO_VERSION___WORKAROUND_GUARD 1
+#else
+#define __COMO_VERSION___WORKAROUND_GUARD 0
+#endif
+#ifndef __INTEL_COMPILER
+#define __INTEL_COMPILER_WORKAROUND_GUARD 1
+#else
+#define __INTEL_COMPILER_WORKAROUND_GUARD 0
+#endif
+#ifndef __ICL
+#define __ICL_WORKAROUND_GUARD 1
+#else
+#define __ICL_WORKAROUND_GUARD 0
+#endif
+#ifndef _COMPILER_VERSION
+#define _COMPILER_VERSION_WORKAROUND_GUARD 1
+#else
+#define _COMPILER_VERSION_WORKAROUND_GUARD 0
+#endif
+
+#ifndef _RWSTD_VER
+#define _RWSTD_VER_WORKAROUND_GUARD 1
+#else
+#define _RWSTD_VER_WORKAROUND_GUARD 0
+#endif
+#ifndef BOOST_RWSTD_VER
+#define BOOST_RWSTD_VER_WORKAROUND_GUARD 1
+#else
+#define BOOST_RWSTD_VER_WORKAROUND_GUARD 0
+#endif
+#ifndef __GLIBCPP__
+#define __GLIBCPP___WORKAROUND_GUARD 1
+#else
+#define __GLIBCPP___WORKAROUND_GUARD 0
+#endif
+#ifndef _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC
+#define _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC_WORKAROUND_GUARD 1
+#else
+#define _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC_WORKAROUND_GUARD 0
+#endif
+#ifndef __SGI_STL_PORT
+#define __SGI_STL_PORT_WORKAROUND_GUARD 1
+#else
+#define __SGI_STL_PORT_WORKAROUND_GUARD 0
+#endif
+#ifndef _STLPORT_VERSION
+#define _STLPORT_VERSION_WORKAROUND_GUARD 1
+#else
+#define _STLPORT_VERSION_WORKAROUND_GUARD 0
+#endif
+#ifndef __LIBCOMO_VERSION__
+#define __LIBCOMO_VERSION___WORKAROUND_GUARD 1
+#else
+#define __LIBCOMO_VERSION___WORKAROUND_GUARD 0
+#endif
+#ifndef _CPPLIB_VER
+#define _CPPLIB_VER_WORKAROUND_GUARD 1
+#else
+#define _CPPLIB_VER_WORKAROUND_GUARD 0
+#endif
+
+#ifndef BOOST_INTEL_CXX_VERSION
+#define BOOST_INTEL_CXX_VERSION_WORKAROUND_GUARD 1
+#else
+#define BOOST_INTEL_CXX_VERSION_WORKAROUND_GUARD 0
+#endif
+#ifndef BOOST_INTEL_WIN
+#define BOOST_INTEL_WIN_WORKAROUND_GUARD 1
+#else
+#define BOOST_INTEL_WIN_WORKAROUND_GUARD 0
+#endif
+#ifndef BOOST_DINKUMWARE_STDLIB
+#define BOOST_DINKUMWARE_STDLIB_WORKAROUND_GUARD 1
+#else
+#define BOOST_DINKUMWARE_STDLIB_WORKAROUND_GUARD 0
+#endif
+#ifndef BOOST_INTEL
+#define BOOST_INTEL_WORKAROUND_GUARD 1
+#else
+#define BOOST_INTEL_WORKAROUND_GUARD 0
+#endif
+// Always define to zero, if it's used it'll be defined my MPL:
+#define BOOST_MPL_CFG_GCC_WORKAROUND_GUARD 0
+
# define BOOST_WORKAROUND(symbol, test) \
- ((symbol != 0) && (1 % (( (symbol test) ) + 1)))
+ ((symbol ## _WORKAROUND_GUARD + 0 == 0) && \
+ (symbol != 0) && (1 % (( (symbol test) ) + 1)))
// ^ ^ ^ ^
// The extra level of parenthesis nesting above, along with the
// BOOST_OPEN_PAREN indirection below, is required to satisfy the
// broken preprocessor in MWCW 8.3 and earlier.
//
// The basic mechanism works as follows:
-// (symbol test) + 1 => 2 if the test passes, 1 otherwise
-// 1 % ((symbol test) + 1) => 1 if the test passes, 0 otherwise
+// (symbol test) + 1 => if (symbol test) then 2 else 1
+// 1 % ((symbol test) + 1) => if (symbol test) then 1 else 0
//
// The complication with % is for cooperation with BOOST_TESTED_AT().
// When "test" is BOOST_TESTED_AT(x) and
// BOOST_DETECT_OUTDATED_WORKAROUNDS is #defined,
//
-// symbol test => 1 if symbol <= x, -1 otherwise
-// (symbol test) + 1 => 2 if symbol <= x, 0 otherwise
-// 1 % ((symbol test) + 1) => 1 if symbol <= x, zero divide otherwise
+// symbol test => if (symbol <= x) then 1 else -1
+// (symbol test) + 1 => if (symbol <= x) then 2 else 0
+// 1 % ((symbol test) + 1) => if (symbol <= x) then 1 else divide-by-zero
//
# ifdef BOOST_DETECT_OUTDATED_WORKAROUNDS
# define BOOST_OPEN_PAREN (
# define BOOST_TESTED_AT(value) > value) ?(-1): BOOST_OPEN_PAREN 1
# else
-# define BOOST_TESTED_AT(value) != 0
+# define BOOST_TESTED_AT(value) != ((value)-(value))
# endif
# else