[Boost-commit] svn:boost r70974 - in branches/release: boost/exception boost/exception/detail libs/exception/build libs/exception/src libs/exception/test

Subject: [Boost-commit] svn:boost r70974 - in branches/release: boost/exception boost/exception/detail libs/exception/build libs/exception/src libs/exception/test
From: emil_at_[hidden]
Date: 2011-04-04 17:19:50

Author: emildotchevski
Date: 2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
New Revision: 70974
URL: http://svn.boost.org/trac/boost/changeset/70974

Log:
Committing changes merged from trunk, most notably optional non-intrusive exception_ptr support for MSVC.
Added:
   branches/release/boost/exception/detail/clone_current_exception.hpp   (contents, props changed)
   branches/release/libs/exception/build/
   branches/release/libs/exception/build/Jamfile.v2   (contents, props changed)
   branches/release/libs/exception/src/
   branches/release/libs/exception/src/clone_current_exception_msvc.cpp   (contents, props changed)
Text files modified: 
   branches/release/boost/exception/detail/exception_ptr.hpp       |   313 ++++++++++++++++++++++++--------------- 
   branches/release/boost/exception/detail/type_info.hpp           |     6                                         
   branches/release/boost/exception/diagnostic_information.hpp     |     2                                         
   branches/release/boost/exception/errinfo_nested_exception.hpp   |     5                                         
   branches/release/boost/exception/exception.hpp                  |    12 +                                       
   branches/release/libs/exception/test/Jamfile.v2                 |     9 +                                       
   branches/release/libs/exception/test/cloning_test.cpp           |    33 +++                                     
   branches/release/libs/exception/test/copy_exception_test.cpp    |    24 +++                                     
   branches/release/libs/exception/test/exception_ptr_test.cpp     |    32 +++                                     
   branches/release/libs/exception/test/unknown_exception_test.cpp |    19 ++                                      
   10 files changed, 321 insertions(+), 134 deletions(-)

Added: branches/release/boost/exception/detail/clone_current_exception.hpp
==============================================================================
--- (empty file)
+++ branches/release/boost/exception/detail/clone_current_exception.hpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -0,0 +1,44 @@
+//Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc.
+
+//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 UUID_81522C0EB56511DFAB613DB0DFD72085
+#define UUID_81522C0EB56511DFAB613DB0DFD72085
+
+#ifdef BOOST_NO_EXCEPTIONS
+#error This header requires exception handling to be enabled.
+#endif
+
+namespace
+boost
+    {
+    namespace
+    exception_detail
+        {
+        namespace
+        clone_current_exception_result
+            {
+            int const success=0;
+            int const bad_alloc=1;
+            int const bad_exception=2;
+            int const not_supported=3;
+            }
+
+        class clone_base;
+        int clone_current_exception_msvc_x86( clone_base const * & cloned );
+
+        inline
+        int
+        clone_current_exception( clone_base const * & cloned )
+            {
+#if defined(BOOST_ENABLE_NON_INTRUSIVE_EXCEPTION_PTR) && defined(_MSC_VER) && defined(_M_IX86) && !defined(_M_X64)
+            return clone_current_exception_msvc_x86(cloned);
+#else
+            return clone_current_exception_result::not_supported;
+#endif
+            }
+        }
+    }
+
+#endif

Modified: branches/release/boost/exception/detail/exception_ptr.hpp
==============================================================================
--- branches/release/boost/exception/detail/exception_ptr.hpp	(original)
+++ branches/release/boost/exception/detail/exception_ptr.hpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -20,6 +20,7 @@
 #include <boost/exception/info.hpp>
 #include <boost/exception/diagnostic_information.hpp>
 #include <boost/exception/detail/type_info.hpp>
+#include <boost/exception/detail/clone_current_exception.hpp>
 #include <boost/shared_ptr.hpp>
 #include <stdexcept>
 #include <new>
@@ -28,10 +29,42 @@
 namespace
 boost
     {
-    typedef shared_ptr<exception_detail::clone_base const> exception_ptr;
-
+    class exception_ptr;
+    BOOST_ATTRIBUTE_NORETURN void rethrow_exception( exception_ptr const & );
     exception_ptr current_exception();
 
+    class
+    exception_ptr
+        {
+        typedef boost::shared_ptr<exception_detail::clone_base const> impl;
+        impl ptr_;
+        friend void rethrow_exception( exception_ptr const & );
+        typedef exception_detail::clone_base const * (impl::*unspecified_bool_type)() const;
+        public:
+        exception_ptr()
+            {
+            }
+        explicit
+        exception_ptr( impl const & ptr ):
+            ptr_(ptr)
+            {
+            }
+        bool
+        operator==( exception_ptr const & other ) const
+            {
+            return ptr_==other.ptr_;
+            }
+        bool
+        operator!=( exception_ptr const & other ) const
+            {
+            return ptr_!=other.ptr_;
+            }
+        operator unspecified_bool_type() const
+            {
+            return ptr_?&impl::get:0;
+            }
+        };
+
     template <class T>
     inline
     exception_ptr
@@ -67,35 +100,49 @@
             boost::exception,
             std::bad_alloc
                 {
+                ~bad_alloc_() throw() { }
                 };
 
-        template <int Dummy>
+        struct
+        bad_exception_:
+            boost::exception,
+            std::bad_exception
+                {
+                ~bad_exception_() throw() { }
+                };
+
+        template <class Exception>
         exception_ptr
-        get_bad_alloc()
+        get_static_exception_object()
             {
-            bad_alloc_ ba;
-            exception_detail::clone_impl<bad_alloc_> c(ba);
+            Exception ba;
+            exception_detail::clone_impl<Exception> c(ba);
             c <<
                 throw_function(BOOST_CURRENT_FUNCTION) <<
                 throw_file(__FILE__) <<
                 throw_line(__LINE__);
-            static exception_ptr ep(new exception_detail::clone_impl<bad_alloc_>(c));
+            static exception_ptr ep(shared_ptr<exception_detail::clone_base const>(new exception_detail::clone_impl<Exception>(c)));
             return ep;
             }
 
-        template <int Dummy>
+        template <class Exception>
         struct
-        exception_ptr_bad_alloc
+        exception_ptr_static_exception_object
             {
             static exception_ptr const e;
             };
 
-        template <int Dummy>
+        template <class Exception>
         exception_ptr const
-        exception_ptr_bad_alloc<Dummy>::
-        e = get_bad_alloc<Dummy>();
+        exception_ptr_static_exception_object<Exception>::
+        e = get_static_exception_object<Exception>();
         }
 
+#if defined(__GNUC__)
+# if (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)
+#  pragma GCC visibility push (default)
+# endif
+#endif
     class
     unknown_exception:
         public boost::exception,
@@ -135,6 +182,11 @@
 #endif
             }
         };
+#if defined(__GNUC__)
+# if (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)
+#  pragma GCC visibility pop
+# endif
+#endif
 
     namespace
     exception_detail
@@ -244,101 +296,131 @@
         exception_ptr
         current_exception_impl()
             {
-            try
-                {
-                throw;
-                }
-            catch(
-            exception_detail::clone_base & e )
-                {
-                return exception_ptr(e.clone());
-                }
-            catch(
-            std::domain_error & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::invalid_argument & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::length_error & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::out_of_range & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::logic_error & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::range_error & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::overflow_error & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::underflow_error & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::ios_base::failure & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::runtime_error & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::bad_alloc & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
+            exception_detail::clone_base const * e=0;
+            switch(
+            exception_detail::clone_current_exception(e) )
+                {
+                case exception_detail::clone_current_exception_result::
+                success:
+                    {
+                    BOOST_ASSERT(e!=0);
+                    return exception_ptr(shared_ptr<exception_detail::clone_base const>(e));
+                    }
+                case exception_detail::clone_current_exception_result::
+                bad_alloc:
+                    {
+                    BOOST_ASSERT(!e);
+                    return exception_detail::exception_ptr_static_exception_object<bad_alloc_>::e;
+                    }
+                case exception_detail::clone_current_exception_result::
+                bad_exception:
+                    {
+                    BOOST_ASSERT(!e);
+                    return exception_detail::exception_ptr_static_exception_object<bad_exception_>::e;
+                    }
+                default:
+                    BOOST_ASSERT(0);
+                case exception_detail::clone_current_exception_result::
+                not_supported:
+                    {
+                    BOOST_ASSERT(!e);
+                    try
+                        {
+                        throw;
+                        }
+                    catch(
+                    exception_detail::clone_base & e )
+                        {
+                        return exception_ptr(shared_ptr<exception_detail::clone_base const>(e.clone()));
+                        }
+                    catch(
+                    std::domain_error & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::invalid_argument & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::length_error & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::out_of_range & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::logic_error & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::range_error & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::overflow_error & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::underflow_error & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::ios_base::failure & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::runtime_error & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::bad_alloc & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
 #ifndef BOOST_NO_TYPEID
-            catch(
-            std::bad_cast & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::bad_typeid & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
+                    catch(
+                    std::bad_cast & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::bad_typeid & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
 #endif
-            catch(
-            std::bad_exception & e )
-                {
-                return exception_detail::current_exception_std_exception(e);
-                }
-            catch(
-            std::exception & e )
-                {
-                return exception_detail::current_exception_unknown_std_exception(e);
-                }
-            catch(
-            boost::exception & e )
-                {
-                return exception_detail::current_exception_unknown_boost_exception(e);
-                }
-            catch(
-            ... )
-                {
-                return exception_detail::current_exception_unknown_exception();
+                    catch(
+                    std::bad_exception & e )
+                        {
+                        return exception_detail::current_exception_std_exception(e);
+                        }
+                    catch(
+                    std::exception & e )
+                        {
+                        return exception_detail::current_exception_unknown_std_exception(e);
+                        }
+                    catch(
+                    boost::exception & e )
+                        {
+                        return exception_detail::current_exception_unknown_boost_exception(e);
+                        }
+                    catch(
+                    ... )
+                        {
+                        return exception_detail::current_exception_unknown_exception();
+                        }
+                    }
                 }
             }
         }
@@ -348,7 +430,6 @@
     current_exception()
         {
         exception_ptr ret;
-        BOOST_ASSERT(!ret);
         try
             {
             ret=exception_detail::current_exception_impl();
@@ -356,36 +437,24 @@
         catch(
         std::bad_alloc & )
             {
-            ret=exception_detail::exception_ptr_bad_alloc<42>::e;
+            ret=exception_detail::exception_ptr_static_exception_object<exception_detail::bad_alloc_>::e;
             }
         catch(
         ... )
             {
-            try
-                {
-                ret=exception_detail::current_exception_std_exception(std::bad_exception());
-                }
-            catch(
-            std::bad_alloc & )
-                {
-                ret=exception_detail::exception_ptr_bad_alloc<42>::e;
-                }
-            catch(
-            ... )
-                {
-                BOOST_ASSERT(0);
-                }
+            ret=exception_detail::exception_ptr_static_exception_object<exception_detail::bad_exception_>::e;
             }
         BOOST_ASSERT(ret);
         return ret;
         }
 
+    BOOST_ATTRIBUTE_NORETURN
     inline
     void
     rethrow_exception( exception_ptr const & p )
         {
         BOOST_ASSERT(p);
-        p->rethrow();
+        p.ptr_->rethrow();
         }
 
     inline

Modified: branches/release/boost/exception/detail/type_info.hpp
==============================================================================
--- branches/release/boost/exception/detail/type_info.hpp	(original)
+++ branches/release/boost/exception/detail/type_info.hpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -53,11 +53,11 @@
         struct
         type_info_
             {
-            detail::sp_typeinfo const & type_;
+            detail::sp_typeinfo const * type_;
 
             explicit
             type_info_( detail::sp_typeinfo const & type ):
-                type_(type)
+                type_(&type)
                 {
                 }
 
@@ -65,7 +65,7 @@
             bool
             operator<( type_info_ const & a, type_info_ const & b )
                 {
-                return 0!=(a.type_.before(b.type_));
+                return 0!=(a.type_->before(*b.type_));
                 }
             };
         }

Modified: branches/release/boost/exception/diagnostic_information.hpp
==============================================================================
--- branches/release/boost/exception/diagnostic_information.hpp	(original)
+++ branches/release/boost/exception/diagnostic_information.hpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -137,7 +137,7 @@
                 }
 #ifndef BOOST_NO_RTTI
             tmp << std::string("Dynamic exception type: ") <<
-                units::detail::demangle((be?(BOOST_EXCEPTION_DYNAMIC_TYPEID(*be)):(BOOST_EXCEPTION_DYNAMIC_TYPEID(*se))).type_.name()) << '\n';
+                units::detail::demangle((be?(BOOST_EXCEPTION_DYNAMIC_TYPEID(*be)):(BOOST_EXCEPTION_DYNAMIC_TYPEID(*se))).type_->name()) << '\n';
 #endif
             if( with_what && se )
                 tmp << "std::exception::what: " << wh << '\n';

Modified: branches/release/boost/exception/errinfo_nested_exception.hpp
==============================================================================
--- branches/release/boost/exception/errinfo_nested_exception.hpp	(original)
+++ branches/release/boost/exception/errinfo_nested_exception.hpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -9,10 +9,9 @@
 namespace
 boost
     {
-    namespace exception_detail { class clone_base; };
+    namespace exception_detail { class clone_base; }
     template <class Tag,class T> class error_info;
-    template <class T> class shared_ptr;
-    typedef shared_ptr<exception_detail::clone_base const> exception_ptr;
+    class exception_ptr;
     typedef error_info<struct errinfo_nested_exception_,exception_ptr> errinfo_nested_exception;
     }
 

Modified: branches/release/boost/exception/exception.hpp
==============================================================================
--- branches/release/boost/exception/exception.hpp	(original)
+++ branches/release/boost/exception/exception.hpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -189,6 +189,11 @@
         E const & set_info( E const &, throw_line const & );
         }
 
+#if defined(__GNUC__)
+# if (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)
+#  pragma GCC visibility push (default)
+# endif
+#endif
     class
     exception
         {
@@ -250,6 +255,11 @@
         mutable char const * throw_file_;
         mutable int throw_line_;
         };
+#if defined(__GNUC__)
+# if (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)
+#  pragma GCC visibility pop
+# endif
+#endif
 
     inline
     exception::
@@ -334,7 +344,7 @@
         struct
         enable_error_info_return_type
             {
-            typedef typename enable_error_info_helper<T,sizeof(exception_detail::dispatch_boost_exception((T*)0))>::type type;
+            typedef typename enable_error_info_helper<T,sizeof(exception_detail::dispatch_boost_exception(static_cast<T *>(0)))>::type type;
             };
         }
 

Added: branches/release/libs/exception/build/Jamfile.v2
==============================================================================
--- (empty file)
+++ branches/release/libs/exception/build/Jamfile.v2	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -0,0 +1,11 @@
+# Boost Exception Library build Jamfile
+#
+# Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc.
+#
+# 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)
+
+alias boost_exception ;
+lib boost_exception : ../src/clone_current_exception_msvc.cpp : <toolset>msvc ;
+
+boost-install boost_exception ;

Added: branches/release/libs/exception/src/clone_current_exception_msvc.cpp
==============================================================================
--- (empty file)
+++ branches/release/libs/exception/src/clone_current_exception_msvc.cpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -0,0 +1,295 @@
+//Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc.
+
+//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)
+
+//This MSVC-specific cpp file implements non-intrusive cloning of exception objects.
+//Based on an exception_ptr implementation by Anthony Williams.
+
+#ifdef BOOST_NO_EXCEPTIONS
+#error This file requires exception handling to be enabled.
+#endif
+
+#if defined(_MSC_VER) && defined(_M_IX86) && !defined(_M_X64)
+
+#include <boost/exception/detail/clone_current_exception.hpp>
+#include <boost/exception/exception.hpp>
+#include <boost/shared_ptr.hpp>
+#ifndef BOOST_NO_RTTI
+#include <typeinfo>
+#endif
+#include <windows.h>
+#include <malloc.h>
+
+namespace
+    {
+    unsigned const exception_maximum_parameters=15;
+    unsigned const exception_noncontinuable=1;
+
+#if _MSC_VER==1310
+    int const exception_info_offset=0x74;
+#elif (_MSC_VER==1400 || _MSC_VER==1500)
+    int const exception_info_offset=0x80;
+#else
+    int const exception_info_offset=-1;
+#endif
+
+    struct
+    exception_record
+        {
+        unsigned long ExceptionCode;
+        unsigned long ExceptionFlags;
+        exception_record * ExceptionRecord;
+        void * ExceptionAddress;
+        unsigned long NumberParameters;
+        ULONG_PTR ExceptionInformation[exception_maximum_parameters];
+        };
+
+    struct
+    exception_pointers
+        {
+        exception_record * ExceptionRecord;
+        void * ContextRecord;
+        };
+
+    unsigned const cpp_exception_code=0xE06D7363;
+    unsigned const cpp_exception_magic_flag=0x19930520;
+    unsigned const cpp_exception_parameter_count=3;
+
+    struct
+    dummy_exception_type
+        {
+        };
+
+    typedef int(dummy_exception_type::*normal_copy_constructor_ptr)(void * src);
+    typedef int(dummy_exception_type::*copy_constructor_with_virtual_base_ptr)(void * src,void * dst);
+    typedef void (dummy_exception_type::*destructor_ptr)();
+
+    union
+    cpp_copy_constructor
+        {
+        normal_copy_constructor_ptr normal_copy_constructor;
+        copy_constructor_with_virtual_base_ptr copy_constructor_with_virtual_base;
+        };
+
+    enum
+    cpp_type_flags
+        {
+        class_is_simple_type=1,
+        class_has_virtual_base=4
+        };
+
+    struct
+    cpp_type_info
+        {
+        unsigned flags;
+#ifndef BOOST_NO_RTTI
+        void const * type_info;
+#else
+        std::type_info * type_info;
+#endif
+        int this_offset;
+        int vbase_descr;
+        int vbase_offset;
+        unsigned long size;
+        cpp_copy_constructor copy_constructor;
+        };
+
+    struct
+    cpp_type_info_table
+        {
+        unsigned count;
+        const cpp_type_info * info[1];
+        };
+
+    struct
+    cpp_exception_type
+        {
+        unsigned flags;
+        destructor_ptr destructor;
+        void(*custom_handler)();
+        cpp_type_info_table const * type_info_table;
+        };
+
+    struct
+    exception_object_deleter
+        {
+        cpp_exception_type const & et_;
+
+        exception_object_deleter( cpp_exception_type const & et ):
+            et_(et)
+            {
+            }
+
+        void
+        operator()( void * obj )
+            {
+            BOOST_ASSERT(obj!=0);
+            dummy_exception_type * dummy_exception_ptr=reinterpret_cast<dummy_exception_type *>(obj);
+            (dummy_exception_ptr->*(et_.destructor))();
+            free(obj);
+            }
+        };
+
+    cpp_type_info const &
+    get_cpp_type_info( cpp_exception_type const & et )
+        {
+        cpp_type_info const * ti = et.type_info_table->info[0];
+        BOOST_ASSERT(ti!=0);
+        return *ti;
+        }
+
+    void
+    copy_msvc_exception( void * dst, void * src, cpp_type_info const & ti )
+        {
+        if( !(ti.flags & class_is_simple_type) && ti.copy_constructor.normal_copy_constructor )
+            {
+            dummy_exception_type * dummy_exception_ptr = reinterpret_cast<dummy_exception_type *>(dst);
+            if( ti.flags & class_has_virtual_base )
+                (dummy_exception_ptr->*(ti.copy_constructor.copy_constructor_with_virtual_base))(src,dst);
+            else
+                (dummy_exception_ptr->*(ti.copy_constructor.normal_copy_constructor))(src);
+            }
+        else
+            memmove(dst,src,ti.size);
+        }
+
+    boost::shared_ptr<void>
+    clone_msvc_exception( void * src, cpp_exception_type const & et )
+        {
+        assert(src!=0);
+        cpp_type_info const & ti=get_cpp_type_info(et);
+        if( void * dst = malloc(ti.size) )
+            {
+            try
+                {
+                copy_msvc_exception(dst,src,ti);
+                }
+            catch(
+            ... )
+                {
+                free(dst);
+                throw;
+                }
+            return boost::shared_ptr<void>(dst,exception_object_deleter(et));
+            }
+        else
+            throw std::bad_alloc();
+        }
+
+    class
+    cloned_exception:
+        public boost::exception_detail::clone_base
+        {
+        cloned_exception( cloned_exception const & );
+        cloned_exception & operator=( cloned_exception const & );
+
+        cpp_exception_type const & et_;
+        boost::shared_ptr<void> exc_;
+
+        public:
+
+        cloned_exception( void * exc, cpp_exception_type const & et ):
+            et_(et),
+            exc_(clone_msvc_exception(exc,et_))
+            {
+            }
+
+        ~cloned_exception() throw()
+            {
+            }
+
+        boost::exception_detail::clone_base const *
+        clone() const
+            {
+            return new cloned_exception(exc_.get(),et_);
+            }
+
+        void
+        rethrow() const
+            {
+            cpp_type_info const & ti=get_cpp_type_info(et_);
+            void * dst = _alloca(ti.size);
+            copy_msvc_exception(dst,exc_.get(),ti);
+            ULONG_PTR args[cpp_exception_parameter_count];
+            args[0]=cpp_exception_magic_flag;
+            args[1]=reinterpret_cast<ULONG_PTR>(dst);
+            args[2]=reinterpret_cast<ULONG_PTR>(&et_);
+            RaiseException(cpp_exception_code,EXCEPTION_NONCONTINUABLE,cpp_exception_parameter_count,args);
+            }
+        };
+
+    bool
+    is_cpp_exception( EXCEPTION_RECORD const * record )
+        {
+        return record && 
+            (record->ExceptionCode==cpp_exception_code) &&
+            (record->NumberParameters==cpp_exception_parameter_count) &&
+            (record->ExceptionInformation[0]==cpp_exception_magic_flag);
+        }
+
+    unsigned long
+    exception_cloning_filter( int & result, boost::exception_detail::clone_base const * & ptr, void * info_ )
+        {
+        BOOST_ASSERT(exception_info_offset>=0);
+        BOOST_ASSERT(info_!=0);
+        EXCEPTION_POINTERS * info=reinterpret_cast<EXCEPTION_POINTERS *>(info_);
+        EXCEPTION_RECORD * record=info->ExceptionRecord;
+        if( is_cpp_exception(record) )
+            {
+            if( !record->ExceptionInformation[2] )
+                record = *reinterpret_cast<EXCEPTION_RECORD * *>(reinterpret_cast<char *>(_errno())+exception_info_offset);
+            if( is_cpp_exception(record) && record->ExceptionInformation[2] )
+                try
+                    {
+                    ptr = new cloned_exception(
+                            reinterpret_cast<void *>(record->ExceptionInformation[1]),
+                            *reinterpret_cast<cpp_exception_type const *>(record->ExceptionInformation[2]));
+                    result = boost::exception_detail::clone_current_exception_result::success;
+                    }
+                catch(
+                std::bad_alloc & )
+                    {
+                    result = boost::exception_detail::clone_current_exception_result::bad_alloc;
+                    }
+                catch(
+                ... )
+                    {
+                    result = boost::exception_detail::clone_current_exception_result::bad_exception;
+                    }
+            }
+        return EXCEPTION_EXECUTE_HANDLER;
+        }
+    }
+
+namespace
+boost
+    {
+    namespace
+    exception_detail
+        {
+        int
+        clone_current_exception_msvc_x86( clone_base const * & cloned )
+            {
+            BOOST_ASSERT(!cloned);
+            int result = clone_current_exception_result::not_supported;
+            if( exception_info_offset>=0 )
+                {
+                 clone_base const * ptr=0;
+                __try
+                    {
+                    throw;
+                    }
+                __except(exception_cloning_filter(result,ptr,GetExceptionInformation()))
+                    {
+                    }
+                if( result==clone_current_exception_result::success )
+                    cloned=ptr;
+                }
+            BOOST_ASSERT(result!=clone_current_exception_result::success || cloned);
+            return result;
+            }
+        }
+    }
+
+#endif

Modified: branches/release/libs/exception/test/Jamfile.v2
==============================================================================
--- branches/release/libs/exception/test/Jamfile.v2	(original)
+++ branches/release/libs/exception/test/Jamfile.v2	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -7,7 +7,13 @@
 
 import testing ;
 
-project : requirements <exception-handling>on ;
+project
+  : requirements
+      <link>static
+      <exception-handling>on
+      <source>/boost//exception
+      <define>BOOST_ENABLE_NON_INTRUSIVE_EXCEPTION_PTR
+      ;
 
 #to_string
 
@@ -37,6 +43,7 @@
 run no_exceptions_test.cpp : : : <exception-handling>off ;
 run errinfos_test.cpp ;
 run exception_ptr_test.cpp /boost//thread : : : <threading>multi ;
+
 compile-fail exception_fail.cpp ;
 compile-fail throw_exception_fail.cpp ;
 compile-fail error_info_const_fail.cpp ;

Modified: branches/release/libs/exception/test/cloning_test.cpp
==============================================================================
--- branches/release/libs/exception/test/cloning_test.cpp	(original)
+++ branches/release/libs/exception/test/cloning_test.cpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -146,6 +146,10 @@
 #endif
             }
         catch(
+        T & )
+            {
+            }
+        catch(
         ... )
             {
             BOOST_TEST(false);
@@ -176,7 +180,7 @@
         catch(
         T & x )
             {
-            BOOST_TEST(std::string("what")==x.what());
+            BOOST_TEST(std::string(x.what()).find("what")!=std::string::npos);
             boost::exception_ptr p = boost::current_exception();
             BOOST_TEST(!(p==boost::exception_ptr()));
             BOOST_TEST(p!=boost::exception_ptr());
@@ -189,7 +193,7 @@
             catch(
             T & x )
                 {
-                BOOST_TEST(std::string("what")==x.what());
+                BOOST_TEST(std::string(x.what()).find("what")!=std::string::npos);
                 }
             catch(
             ... )
@@ -216,6 +220,10 @@
 #endif
             }
         catch(
+        T & )
+            {
+            }
+        catch(
         ... )
             {
             BOOST_TEST(false);
@@ -385,6 +393,11 @@
             BOOST_TEST(false);
             }
         catch(
+        derives_std_exception & )
+            {
+            //Yay! Non-intrusive cloning supported!
+            }
+        catch(
         boost::unknown_exception & e )
             {
 #ifndef BOOST_NO_RTTI
@@ -434,6 +447,14 @@
             BOOST_TEST(false);
             }
         catch(
+        derives_std_boost_exception & x )
+            {
+            //Yay! Non-intrusive cloning supported!
+            BOOST_TEST(boost::get_error_info<my_info>(x));
+            if( int const * p=boost::get_error_info<my_info>(x) )
+                BOOST_TEST(*p==42);
+            }
+        catch(
         boost::unknown_exception & x )
             {
             BOOST_TEST(boost::get_error_info<my_info>(x));
@@ -495,6 +516,14 @@
             BOOST_TEST(false);
             }
         catch(
+        derives_boost_exception & x )
+            {
+            //Yay! Non-intrusive cloning supported!
+            BOOST_TEST(boost::get_error_info<my_info>(x));
+            if( int const * p=boost::get_error_info<my_info>(x) )
+                BOOST_TEST(*p==42);
+            }
+        catch(
         boost::unknown_exception & x )
             {
             BOOST_TEST(boost::get_error_info<my_info>(x));

Modified: branches/release/libs/exception/test/copy_exception_test.cpp
==============================================================================
--- branches/release/libs/exception/test/copy_exception_test.cpp	(original)
+++ branches/release/libs/exception/test/copy_exception_test.cpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -6,15 +6,37 @@
 #include <boost/exception_ptr.hpp>
 #include <boost/exception/get_error_info.hpp>
 #include <boost/thread.hpp>
+#include <boost/detail/atomic_count.hpp>
 #include <boost/detail/lightweight_test.hpp>
 
 typedef boost::error_info<struct tag_answer,int> answer;
 
+boost::detail::atomic_count exc_count(0);
+
 struct
 err:
     virtual boost::exception,
     virtual std::exception
     {
+    err()
+        {
+        ++exc_count;
+        }
+
+    err( err const & )
+        {
+        ++exc_count;
+        }
+
+    virtual
+    ~err() throw()
+        {
+        --exc_count;
+        }
+
+    private:
+
+    err & operator=( err const & );
     };
 
 class
@@ -116,7 +138,9 @@
 int
 main()
     {
+    BOOST_TEST(++exc_count==1);
     simple_test();
     thread_test();
+    BOOST_TEST(!--exc_count);
     return boost::report_errors();
     }

Modified: branches/release/libs/exception/test/exception_ptr_test.cpp
==============================================================================
--- branches/release/libs/exception/test/exception_ptr_test.cpp	(original)
+++ branches/release/libs/exception/test/exception_ptr_test.cpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -10,6 +10,7 @@
 #include <boost/function.hpp>
 #include <boost/bind.hpp>
 #include <boost/thread.hpp>
+#include <boost/detail/atomic_count.hpp>
 #include <boost/detail/lightweight_test.hpp>
 #include <iostream>
 
@@ -66,7 +67,34 @@
         rethrow_exception(t.err_);
     }
 
-struct exc: boost::exception, std::exception { };
+boost::detail::atomic_count exc_count(0);
+
+struct
+exc:
+    virtual boost::exception,
+    virtual std::exception
+    {
+    exc()
+        {
+        ++exc_count;
+        }
+
+    exc( exc const & )
+        {
+        ++exc_count;
+        }
+
+    virtual
+    ~exc() throw()
+        {
+        --exc_count;
+        }
+
+    private:
+
+    exc & operator=( exc const & );
+    };
+
 typedef boost::error_info<struct answer_,int> answer;
 
 void
@@ -93,6 +121,7 @@
 int
 main()
     {
+    BOOST_TEST(++exc_count==1);
     try
         {
         std::vector< boost::shared_ptr<thread_handle> > threads;
@@ -109,4 +138,5 @@
             boost::current_exception_diagnostic_information() << std::endl;
         return 42;
         }
+    BOOST_TEST(!--exc_count);
     }

Modified: branches/release/libs/exception/test/unknown_exception_test.cpp
==============================================================================
--- branches/release/libs/exception/test/unknown_exception_test.cpp	(original)
+++ branches/release/libs/exception/test/unknown_exception_test.cpp	2011-04-04 17:19:48 EDT (Mon, 04 Apr 2011)
@@ -62,6 +62,15 @@
                 BOOST_TEST(false);
             }
         catch(
+        boost::exception & x )
+            {
+            //Yay! Non-intrusive cloning supported!
+            if( int const * d=boost::get_error_info<test>(x) )
+                BOOST_TEST( 42==*d );
+            else
+                BOOST_TEST(false);
+            }
+        catch(
         ... )
             {
             BOOST_TEST(false);
@@ -101,6 +110,11 @@
             {
             }
         catch(
+        std::exception & )
+            {
+            //Yay! Non-intrusive cloning supported!
+            }
+        catch(
         ... )
             {
             BOOST_TEST(false);
@@ -114,6 +128,11 @@
             {
             }
         catch(
+        std::exception & )
+            {
+            //Yay! Non-intrusive cloning supported!
+            }
+        catch(
         ... )
             {
             BOOST_TEST(false);