Upgrade to boost version 1.71.0

Author: bstaletic

cpp/BoostParts/boost/config/auto_link.hpp

@@ -99,7 +99,8 @@ BOOST_LIB_VERSION:    The Boost version, in the form x_y, for Boost version x.y.
 #if defined(BOOST_MSVC) \
     || defined(__BORLANDC__) \
     || (defined(__MWERKS__) && defined(_WIN32) && (__MWERKS__ >= 0x3000)) \
-    || (defined(__ICL) && defined(_MSC_EXTENSIONS) && (_MSC_VER >= 1200))
+    || (defined(__ICL) && defined(_MSC_EXTENSIONS) && (_MSC_VER >= 1200)) \
+    || (defined(BOOST_CLANG) && defined(BOOST_WINDOWS) && defined(_MSC_VER) && (__clang_major__ >= 4))
 
 #ifndef BOOST_VERSION_HPP
 #  include <boost/version.hpp>
@@ -203,6 +204,11 @@ BOOST_LIB_VERSION:    The Boost version, in the form x_y, for Boost version x.y.
      // Metrowerks CodeWarrior 9.x
 #    define BOOST_LIB_TOOLSET "cw9"
 
+#  elif defined(BOOST_CLANG) && defined(BOOST_WINDOWS) && defined(_MSC_VER) && (__clang_major__ >= 4)
+
+     // Clang on Windows
+#    define BOOST_LIB_TOOLSET "clangw" BOOST_STRINGIZE(__clang_major__)
+
 #  endif
 #endif // BOOST_LIB_TOOLSET
 

cpp/BoostParts/boost/config/compiler/gcc.hpp

@@ -309,8 +309,8 @@
 #  define BOOST_FALLTHROUGH __attribute__((fallthrough))
 #endif
 
-#ifdef __MINGW32__
-// Currently (June 2017) thread_local is broken on mingw for all current compiler releases, see
+#if defined(__MINGW32__) && !defined(__MINGW64__)
+// Currently (March 2019) thread_local is broken on mingw for all current 32bit compiler releases, see
 // https://sourceforge.net/p/mingw-w64/bugs/527/
 // Not setting this causes program termination on thread exit.
 #define BOOST_NO_CXX11_THREAD_LOCAL
@@ -327,7 +327,7 @@
 
 //
 // __builtin_unreachable:
-#if BOOST_GCC_VERSION >= 40800
+#if BOOST_GCC_VERSION >= 40500
 #define BOOST_UNREACHABLE_RETURN(x) __builtin_unreachable();
 #endif
 

cpp/BoostParts/boost/config/compiler/visualc.hpp

@@ -43,6 +43,9 @@
 #  error "Compiler not supported or configured - please reconfigure"
 #endif
 
+// VS2005 (VC8) docs: __assume has been in Visual C++ for multiple releases
+#define BOOST_UNREACHABLE_RETURN(x) __assume(0);
+
 #if _MSC_FULL_VER < 180020827
 #  define BOOST_NO_FENV_H
 #endif
@@ -202,8 +205,9 @@
 #if (_MSC_VER < 1911) || (_MSVC_LANG < 201703)
 #  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
 #  define BOOST_NO_CXX17_IF_CONSTEXPR
-#  define BOOST_NO_CXX17_HDR_OPTIONAL
-#  define BOOST_NO_CXX17_HDR_STRING_VIEW
+// Let the defaults handle these now:
+//#  define BOOST_NO_CXX17_HDR_OPTIONAL
+//#  define BOOST_NO_CXX17_HDR_STRING_VIEW
 #endif
 
 // MSVC including version 14 has not yet completely
@@ -313,7 +317,7 @@
 #   endif
 # else
 #   if _MSC_VER < 1200
-      // Note: Versions up to 7.0 aren't supported.
+      // Note: Versions up to 10.0 aren't supported.
 #     define BOOST_COMPILER_VERSION 5.0
 #   elif _MSC_VER < 1300
 #     define BOOST_COMPILER_VERSION 6.0
@@ -335,6 +339,8 @@
 #     define BOOST_COMPILER_VERSION 14.0
 #   elif _MSC_VER < 1920
 #     define BOOST_COMPILER_VERSION 14.1
+#   elif _MSC_VER < 1930
+#     define BOOST_COMPILER_VERSION 14.2
 #   else
 #     define BOOST_COMPILER_VERSION _MSC_VER
 #   endif
@@ -346,8 +352,8 @@
 #include <boost/config/pragma_message.hpp>
 
 //
-// last known and checked version is 19.12.25830.2 (VC++ 2017.3):
-#if (_MSC_VER > 1912)
+// last known and checked version is 19.20.27508 (VC++ 2019 RC3):
+#if (_MSC_VER > 1920)
 #  if defined(BOOST_ASSERT_CONFIG)
 #     error "Boost.Config is older than your current compiler version."
 #  elif !defined(BOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE)

cpp/BoostParts/boost/config/detail/suffix.hpp

@@ -992,6 +992,23 @@ namespace std{ using ::type_info; }
 #ifndef BOOST_ATTRIBUTE_UNUSED
 #  define BOOST_ATTRIBUTE_UNUSED
 #endif
+//
+// [[nodiscard]]:
+//
+#ifdef __has_cpp_attribute
+#if __has_cpp_attribute(nodiscard)
+# define BOOST_ATTRIBUTE_NODISCARD [[nodiscard]]
+#endif
+#if __has_cpp_attribute(no_unique_address) && !(defined(__GNUC__) && (__cplusplus < 201100))
+# define BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS [[no_unique_address]]
+#endif
+#endif
+#ifndef BOOST_ATTRIBUTE_NODISCARD
+# define BOOST_ATTRIBUTE_NODISCARD
+#endif
+#ifndef BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS
+# define BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS
+#endif
 
 #define BOOST_STATIC_CONSTEXPR  static BOOST_CONSTEXPR_OR_CONST
 
@@ -1027,13 +1044,17 @@ namespace std{ using ::type_info; }
 #if !defined(__has_include)
 #  define BOOST_NO_CXX17_HDR_OPTIONAL
 #  define BOOST_NO_CXX17_HDR_STRING_VIEW
+#  define BOOST_NO_CXX17_HDR_VARIANT
 #else
 #if !__has_include(<optional>)
 #  define BOOST_NO_CXX17_HDR_OPTIONAL
 #endif
 #if !__has_include(<string_view>)
 #  define BOOST_NO_CXX17_HDR_STRING_VIEW
 #endif
+#if !__has_include(<variant>)
+#  define BOOST_NO_CXX17_HDR_VARIANT
+#endif
 #endif
 
 //