diff -rupN boost_1_43_0/boost/system/error_code.hpp boost_vms_1_43_0/boost/system/error_code.hpp
--- boost_1_43_0/boost/system/error_code.hpp	2009-11-13 16:37:32.000000000 +0200
+++ boost_vms_1_43_0/boost/system/error_code.hpp	2010-07-08 18:04:00.000000000 +0300
@@ -463,8 +463,13 @@ namespace boost
 
     inline std::size_t hash_value( const error_code & ec )
     {
+      #if defined(__VMS) && __INITIAL_POINTER_SIZE == 64
+      return static_cast<std::size_t>(ec.value())
+        + reinterpret_cast<long long int>(&ec.category());
+      #else
       return static_cast<std::size_t>(ec.value())
         + reinterpret_cast<std::size_t>(&ec.category());
+      #endif
     }
 
     //  make_* functions for errc::errc_t  -----------------------------//
diff -rupN boost_1_43_0/boost/system/system_error.hpp boost_vms_1_43_0/boost/system/system_error.hpp
--- boost_1_43_0/boost/system/system_error.hpp	2008-07-11 04:25:09.000000000 +0300
+++ boost_vms_1_43_0/boost/system/system_error.hpp	2010-07-08 18:04:00.000000000 +0300
@@ -61,7 +61,13 @@ namespace boost
       {
         try
         {
-          m_what = this->std::runtime_error::what();
+          #ifdef __VMS
+	  // Workaround for standard library bug, it may return NULL pointer
+	  char const *tmp = this->std::runtime_error::what();
+	  m_what = tmp ? tmp : "";
+	  #else
+	  m_what = this->std::runtime_error::what();
+          #endif
           if ( m_error_code )
           {
             if ( !m_what.empty() ) m_what += ": ";
diff -rupN boost_1_43_0/libs/system/src/error_code.cpp boost_vms_1_43_0/libs/system/src/error_code.cpp
--- boost_1_43_0/libs/system/src/error_code.cpp	2010-07-11 11:27:16.000000000 +0300
+++ boost_vms_1_43_0/libs/system/src/error_code.cpp	2010-07-11 11:27:31.000000000 +0300
@@ -189,7 +189,9 @@ namespace
     case EILSEQ: return make_error_condition( illegal_byte_sequence );
     case EINPROGRESS: return make_error_condition( operation_in_progress );
     case EINTR: return make_error_condition( interrupted );
+    #ifndef __VMS
     case EINVAL: return make_error_condition( invalid_argument );
+    #endif
     case EIO: return make_error_condition( io_error );
     case EISCONN: return make_error_condition( already_connected );
     case EISDIR: return make_error_condition( is_a_directory );