January 2006 - Boost - lists.boost.org

Databases - SOCI 2.0
by Maciej Sobczak 16 Jan '06

16 Jan '06

Hi, I would like to resurrect the discussion about database support in Boost by posting here the following announcement: <announcement> I'm pleased to announce that the new release of the SOCI library is available for download. The homepage of the project is: http://soci.sourceforge.net/ The SOCI library is a database-access library that tries to mimic the syntax known from Embedded SQL, but staying within the standard C++. The target audience of the SOCI library are those developers, who need an efficient, but also straightforward and easy to use interface. This new release brings the following enhancements: 1. More extensive support for object-relational mapping. 2. A plug-in architecture for backends, which allows to target various database engines by simply linking with the chosen backend. Currently, the following database engines are supported (through their respective "native" interface): * Oracle * PostgreSQL </announcement> We have prepared a small rationale FAQ that can be of interest to you: <http://soci.sourceforge.net/doc/rationale.html>. We would like to put this library under consideration for inclusion into Boost, but before we will bother you with formal submission or anything like this, it should be acknowledged that SOCI, at the moment, does not support Microsoft servers. We would like to therefore invite those of you who have some expertise with ODBC or ADO to help us writing relevant backend. Contributions targetting other database engines are also welcome, of course. Regards, -- Maciej Sobczak : http://www.msobczak.com/ Programming : http://www.msobczak.com/prog/

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Boost regression notification (2006-01-15 [HEAD])
by Douglas Gregor 16 Jan '06

16 Jan '06

Boost Regression test failures Report time: 2006-01-15T13:56:09Z This report lists all regression test failures on release platforms. Detailed report: http://engineering.meta-comm.com/boost-regression/CVS-HEAD/developer/issues… 501 failures in 20 libraries xpressive (24) date_time (6) multi_array (2) python (59) graph (5) random (1) numeric/interval (4) signals (30) tr1 (3) concept_check (21) typeof (8) rational (4) filesystem (33) test (16) program_options (7) serialization (206) wave (3) parameter (12) spirit (35) iostreams (22) |xpressive| c_traits: cw-9_5-darwin misc1: cw-9_5-darwin regress: cw-9_5-darwin test1: cw-9_5-darwin test10: cw-9_5-darwin test10u: cw-9_5-darwin test1u: cw-9_5-darwin test2: cw-9_5-darwin test2u: cw-9_5-darwin test3: cw-9_5-darwin test3u: cw-9_5-darwin test4: cw-9_5-darwin test4u: cw-9_5-darwin test5: cw-9_5-darwin test5u: cw-9_5-darwin test6: cw-9_5-darwin test6u: cw-9_5-darwin test7: cw-9_5-darwin test7u: cw-9_5-darwin test8: cw-9_5-darwin test8u: cw-9_5-darwin test9: cw-9_5-darwin test9u: cw-9_5-darwin test_non_char: cw-9_5-darwin |date_time| testgreg_serialize_dll: cw-9_4 intel-win32-8_1 intel-win32-9_0 vc-7_1 vc-7_1 vc-7_1 |multi_array| access: gcc-3.3.6-linux gcc-3.4.4-linux |python| andreas_beyer: vc-7_1 args: vc-7_1 auto_ptr: vc-7_1 back_reference: vc-7_1 ben_scott1: vc-7_1 bienstman1: vc-7_1 bienstman2: vc-7_1 bienstman3: vc-7_1 builtin_converters: vc-7_1 callbacks: vc-7_1 const_argument: vc-7_1 crossmod_exception: vc-7_1 data_members: vc-7_1 defaults: vc-7_1 dict: vc-7_1 docstring: cw-9_4 vc-7_1 enum: vc-7_1 exception_translator: vc-7_1 extract: vc-7_1 implicit: vc-7_1 injected: vc-7_1 iterator: vc-7_1 keywords: vc-7_1 list: vc-7_1 long: vc-7_1 map_indexing_suite: vc-7_1 minimal: vc-7_1 multi_arg_constructor: vc-7_1 nested: vc-7_1 numpy: gcc-4_0-darwin vc-7_1 object: vc-7_1 opaque: vc-7_1 operators: vc-7_1 pearu1: vc-7_1 pickle1: vc-7_1 pickle2: vc-7_1 pickle3: vc-7_1 pickle4: vc-7_1 pointer_vector: vc-7_1 polymorphism: vc-7_1 polymorphism2: vc-7_1 polymorphism2_auto_ptr: vc-7_1 properties: vc-7_1 raw_ctor: vc-7_1 return_arg: vc-7_1 shared_ptr: vc-7_1 slice: gcc-4_0-darwin vc-7_1 staticmethod: vc-7_1 stl_iterator: vc-7_1 str: vc-7_1 test_pointer_adoption: vc-7_1 try: vc-7_1 tuple: vc-7_1 vector_indexing_suite: vc-7_1 virtual_functions: vc-7_1 wrapper_held_type: vc-7_1 |graph| csr_graph_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux graphviz_test: vc-7_1 vc-7_1 vc-7_1 |random| random_test: intel-9.0-linux |numeric/interval| det: tru64cxx71-006 integer: tru64cxx71-006 mul: tru64cxx71-006 overflow: tru64cxx71-006 |signals| dead_slot_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.2.3-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3.4.5-linux gcc-3_3-darwin gcc-3_4_3-sunos gcc-4.0.2-linux gcc-4_0-darwin mingw-3_4_2 mingw-3_4_2 vc-7_1 vc-7_1 vc-7_1 trackable_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.2.3-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3.4.5-linux gcc-3_3-darwin gcc-3_4_3-sunos gcc-4.0.2-linux gcc-4_0-darwin mingw-3_4_2 mingw-3_4_2 vc-7_1 vc-7_1 vc-7_1 |tr1| test_exception: gcc-2.95.3-stlport-4.6.2-linux test_new: gcc-2.95.3-stlport-4.6.2-linux test_stdexcept: gcc-2.95.3-stlport-4.6.2-linux |concept_check| stl_concept_covering: cw-9_4 cw-9_5-darwin gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.2.3-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3.4.5-linux gcc-3_3-darwin gcc-3_4_3-sunos gcc-4.0.2-linux gcc-4_0-darwin intel-9.0-linux intel-win32-8_1 intel-win32-9_0 mingw-3_4_2 mingw-3_4_2 tru64cxx71-006 vc-7_1 vc-7_1 vc-7_1 |typeof| function_ptr_from_tpl_emulation: vc-7_1 vc-7_1 vc-7_1 function_ptr_from_tpl_native: vc-7_1 vc-7_1 vc-7_1 lvalue_emulation: gcc-4.0.2-linux lvalue_native: gcc-4.0.2-linux |rational| rational_test: gcc-2.95.3-stlport-4.6.2-linux vc-7_1 vc-7_1 vc-7_1 |filesystem| convenience_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux fstream_test: gcc-2.95.3-stlport-4.6.2-linux gcc-3.2.3-linux large_file_support_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux mbcopy: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.2.3-linux mingw-3_4_2 mingw-3_4_2 mbpath: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux mingw-3_4_2 mingw-3_4_2 operations_test: cw-9_5-darwin gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux operations_test_dll: cw-9_5-darwin gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux path_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux path_test_dll: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux simple_ls: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux wide_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.2.3-linux mingw-3_4_2 mingw-3_4_2 tru64cxx71-006 |test| test_fp_comparisons: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux test_tools_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.2.3-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3.4.5-linux gcc-3_3-darwin gcc-3_4_3-sunos gcc-4.0.2-linux gcc-4_0-darwin intel-9.0-linux mingw-3_4_2 mingw-3_4_2 tru64cxx71-006 |program_options| cmdline_test_dll: cw-9_4 options_description_test_dll: cw-9_4 parsers_test_dll: cw-9_4 positional_options_test_dll: cw-9_4 unicode_test_dll: cw-9_4 variable_map_test_dll: cw-9_4 winmain_dll: cw-9_4 |serialization| test_array_binary_archive_dll: cw-9_4 test_array_text_archive_dll: cw-9_4 test_array_text_warchive_dll: cw-9_4 test_array_xml_archive_dll: cw-9_4 test_array_xml_warchive_dll: cw-9_4 test_binary_binary_archive_dll: cw-9_4 test_binary_text_archive_dll: cw-9_4 test_binary_text_warchive_dll: cw-9_4 test_binary_xml_archive_dll: cw-9_4 test_binary_xml_warchive_dll: cw-9_4 test_class_info_load_binary_archive_dll: cw-9_4 test_class_info_load_text_archive_dll: cw-9_4 test_class_info_load_text_warchive_dll: cw-9_4 test_class_info_load_xml_archive_dll: cw-9_4 test_class_info_load_xml_warchive_dll: cw-9_4 test_class_info_save_binary_archive_dll: cw-9_4 test_class_info_save_text_archive_dll: cw-9_4 test_class_info_save_text_warchive_dll: cw-9_4 test_class_info_save_xml_archive_dll: cw-9_4 test_class_info_save_xml_warchive_dll: cw-9_4 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cw-9_4 test_list_ptrs_text_warchive_dll: cw-9_4 test_list_ptrs_xml_archive_dll: cw-9_4 test_list_ptrs_xml_warchive_dll: cw-9_4 test_list_text_archive_dll: cw-9_4 test_list_text_warchive_dll: cw-9_4 test_list_xml_archive_dll: cw-9_4 test_list_xml_warchive_dll: cw-9_4 test_map_binary_archive_dll: cw-9_4 test_map_text_archive_dll: cw-9_4 test_map_text_warchive_dll: cw-9_4 test_map_xml_archive_dll: cw-9_4 test_map_xml_warchive_dll: cw-9_4 test_multiple_ptrs_binary_archive_dll: cw-9_4 test_multiple_ptrs_text_archive_dll: cw-9_4 test_multiple_ptrs_text_warchive_dll: cw-9_4 test_multiple_ptrs_xml_archive_dll: cw-9_4 test_multiple_ptrs_xml_warchive_dll: cw-9_4 test_non_default_ctor_binary_archive_dll: cw-9_4 test_non_default_ctor_text_archive_dll: cw-9_4 test_non_default_ctor_text_warchive_dll: cw-9_4 test_non_default_ctor_xml_archive_dll: cw-9_4 test_non_default_ctor_xml_warchive_dll: cw-9_4 test_non_intrusive_binary_archive_dll: cw-9_4 test_non_intrusive_text_archive_dll: cw-9_4 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test_simple_class_xml_archive_dll: cw-9_4 test_simple_class_xml_warchive_dll: cw-9_4 test_split_binary_archive_dll: cw-9_4 test_split_text_archive_dll: cw-9_4 test_split_text_warchive_dll: cw-9_4 test_split_xml_archive_dll: cw-9_4 test_split_xml_warchive_dll: cw-9_4 test_tracking_binary_archive_dll: cw-9_4 test_tracking_text_archive_dll: cw-9_4 test_tracking_text_warchive_dll: cw-9_4 test_tracking_xml_archive_dll: cw-9_4 test_tracking_xml_warchive_dll: cw-9_4 test_variant_binary_archive_dll: cw-9_4 test_variant_text_archive_dll: cw-9_4 test_variant_text_warchive_dll: cw-9_4 test_variant_xml_archive_dll: cw-9_4 test_variant_xml_warchive_dll: cw-9_4 test_vector_binary_archive_dll: cw-9_4 test_vector_text_archive_dll: cw-9_4 test_vector_text_warchive_dll: cw-9_4 test_vector_xml_archive_dll: cw-9_4 test_vector_xml_warchive_dll: cw-9_4 test_void_cast_dll: cw-9_4 |wave| testwave: cw-9_5-darwin testwave_dll: cw-9_4 cw-9_5-darwin |parameter| basics: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux efficiency: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux macros: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux sfinae: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux tutorial: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux unnamed: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux |spirit| multi_pass_compile_tests: intel-win32-8_1 scanner_value_type_tests: cw-9_4 cw-9_5-darwin gcc-3.2.3-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3.4.5-linux gcc-3_3-darwin gcc-3_4_3-sunos gcc-4.0.2-linux gcc-4_0-darwin intel-9.0-linux intel-win32-8_1 intel-win32-9_0 tru64cxx71-006 vc-7_1 vc-7_1 vc-7_1 scanner_value_type_tests_debug: cw-9_4 cw-9_5-darwin gcc-3.2.3-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3.4.5-linux gcc-3_3-darwin gcc-3_4_3-sunos gcc-4.0.2-linux gcc-4_0-darwin intel-9.0-linux intel-win32-8_1 intel-win32-9_0 tru64cxx71-006 vc-7_1 vc-7_1 vc-7_1 |iostreams| auto_close_test: tru64cxx71-006 code_converter_test: tru64cxx71-006 component_access_test: tru64cxx71-006 compose_test: tru64cxx71-006 copy_test: tru64cxx71-006 counter_test: tru64cxx71-006 example_test: tru64cxx71-006 filtering_stream_test: tru64cxx71-006 finite_state_filter_test: tru64cxx71-006 flush_test: tru64cxx71-006 invert_test: tru64cxx71-006 line_filter_test: tru64cxx71-006 newline_test: tru64cxx71-006 pipeline_test: tru64cxx71-006 regex_filter_test: tru64cxx71-006 restrict_test: tru64cxx71-006 seekable_file_test: tru64cxx71-006 seekable_filter_test: tru64cxx71-006 stdio_filter_test: tru64cxx71-006 symmetric_filter_test: tru64cxx71-006 tee_test: tru64cxx71-006 wide_stream_test: tru64cxx71-006

2 1

[filesystem 1.34] bug - basic_path::append()
by David Whetstone 15 Jan '06

15 Jan '06

While investigating basic_path::append (please see my previous posts), I found something a bit suspect. template<class String, class Traits> template <class InputIterator> basic_path<String, Traits> & basic_path<String, Traits>::append( InputIterator first, InputIterator last ) { if ( detail::is_separator<path_type>( *first ) && detail::is_separator<path_type>( *(first+1) ) && *(first+2) == colon<path_type>::value ) first += 3; What if first == last? Worse, what if 'last' is the typical past-the-end (dereferencing undefined) value? Consider the following test-cases: -------------- path_test.cpp.patch -------------------- *** path_test.cpp.orig Fri Jan 13 20:39:08 2006 --- path_test.cpp Fri Jan 13 20:26:19 2006 *************** *** 12,17 **** --- 12,18 ---- #include <iostream> #include <sstream> #include <string> + #include <vector> #include <cstring> #include <cassert> *************** *** 251,256 **** --- 252,269 ---- PATH_CHECK( p5, bf ); p5.append( bf, bf + sizeof(bf) ); PATH_CHECK( p5, "bar/foo/bar/foo" ); + + std::string s1( "//:somestring" ); + std::vector<char> v1( s1.begin(), s1.end() ); + v1.resize( 0 ); + + p5.assign( v1.begin(), v1.end() ); + std::string s2( v1.begin(), v1.end() ); + PATH_CHECK( p5, s2 ); + + p5.assign( s1.begin(), s1.begin() + 1 ); + PATH_CHECK( p5, "/" ); + # endif BOOST_CHECK( p1 != p4 ); ------------- end path_test.cpp.patch -----------------

2 2

Boost and the SunStudio 11 compiler on Solaris 10 - initial build results
by Timo Geusch 15 Jan '06

15 Jan '06

Good morning, I hope that I'm not duplicating anybody's effort here - if I am, please get in touch so we can coordinate said effort. Anyway, to the subject at hand. About a year ago I posted a few results of my subsequently aborted attempt of getting Boost to work with the SunStudio 8/5.5 SUN compiler. Just about the only library I managed to get to work was the smart_ptr library. This still stands - I'm getting the impression that that particular compiler ran into even more hiccups with later versions of Boost. I've finally managed to get myself a decent spec SUN workstation and thanks to SUN now providing SunStudio 11 for the cost of a download, the latest compiler as well. Just got the whole shebang installed and attempted to compile boost without any configuration apart from adding the compiler to my path. The result looks pretty good so far - there are still a couple of compilation issues (most seem to be centred around type_traits/is_enum.hpp) and several link failures. I'll be looking into these hopefully over the next couple of weeks. So far, the overall results look a lot better compared to Studio 8 - after a build of the 'state' target with the basic sunpro tool set and absolutely no changes to the existing 1.33.1 configuration, bjam reports the following: ...failed updating 360 targets... ...skipped 192 targets... ...updated 877 targets... IME that's a massive improvement over results I got previously. Once I got to look into the problems above I should be able to set up a regular regression test and provide the results but I'm probably getting a tad ahead of myself... Regards, Timo

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"Small buffer optimization" for boost::function?
by Alex Besogonov 15 Jan '06

15 Jan '06

Good <time-of-day>! Why not use 'small buffer optimization' for boost::function? Most of allocations are 8-16 bytes - an optimal size for SBO. This optimization will make boost::function _much_ faster - in one of our project boost::function is responsible for 15% of the whole processor time. PS: it will also be nice if something like http://www.codeproject.com/cpp/FastDelegate.asp will be included in Boost (and possibly in TR2). PS: Happy New Year! -- With respect, Alex Besogonov (cyberax(a)elewise.com)

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GCC warning
by Preston A. Elder 15 Jan '06

15 Jan '06

Don't know if anyone cares, however I DO get this warning on gcc 3.4.4: /usr/include/boost/format/format_class.hpp: In constructor `boost::basic_format<Ch, Tr, Alloc>::basic_format(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::locale&) [with Ch = char, Tr = std::char_traits<char>, Alloc = std::allocator<char>]': ../include/magick.h:58: instantiated from here /usr/include/boost/format/format_class.hpp:137: warning: `boost::basic_format<char, std::char_traits<char>, std::allocator<char> >::loc_' will be initialized after /usr/include/boost/format/format_class.hpp:135: warning: `unsigned char boost::basic_format<char, std::char_traits<char>, std::allocator<char> >::exceptions_' /usr/include/boost/format/format_implementation.hpp:49: warning: when initialized here Basically an order of initialization warning. I run with: -W -Wall -Wextra -Wpointer-arith -Wcast-align -Winvalid-pch -Wold-style-cast -Woverloaded-virtual -Wsign-promo Yeah, I want to know about everything that the compiler is correcting FOR me instead of being correct. -- PreZ :) Death is life's way of telling you you've been fired. -- R. Geis

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[serialization] VC7.1 STL facet deletion bug when overloading operators new/delete
by Felipe Magno de Almeida 15 Jan '06

15 Jan '06

Hello! I'm having an assertion failure when working with xml_oarchive. The problem is that in xdebug library header, _NEW_CRT is defined as another operator new. All standard facets are created using _NEW_CRT. But my application overload operators new/delete/new[]/delete[], So when _DELETE_CRT is called to delete the facet created in basic_text_oprimitive.ipp : 90 The code is: archive_locale.reset( add_facet( std::locale::classic(), new codecvt_null<BOOST_DEDUCED_TYPENAME OStream::char_type> ) It raises an assertion failure, since it wasnt used the same operator for creating and deleting the object. This assertion only occurs when _DEBUG is defined. The workaround I used was to replace new for _NEW_CRT, but it will certainly only work for my STL. This "different operator new" is only used for facets in the VC7.1 STL. The boost I'm using is the one in cvs (downloaded yesterday). Thanks in advance, -- Felipe Magno de Almeida

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[MPL.Math] Updated version now available
by Cromwell Enage 15 Jan '06

15 Jan '06

Issues addressed: * All metafunctions that can be instantiated in user code have been registered with Boost.Typeof (see typeof.cpp for a test case). Registration of each metafunction occurs at the end of the header file in which the metafunction is declared, as per the "don't pay for what you don't use" policy. * The BOOST_MPL_AUX_TYPEOF_REGISTER_TYPE_C macro, defined in <boost/mpl/aux_/typeof/register_type_c.hpp>, enables one to register metafunctions that have the following form: template < typename ValueType , ValueType N1 , ValueType N2 , ... > struct metafunction { ... }; This macro is currently used to register rational_c, mixed_number_c, and complex_number_c; it is hoped that vector_c, list_c, range_c, and integral_c will also be registered by it. (The _C suffix indicates that the macro is to be used to register types ending in _c.) * I also suspect that the recent problem with double_::aux::get_value() is one of endianness. Unfortunately I don't know which combination of macros will detect Solaris. Therefore, BOOST_MPL_CFG_IS_LITTLE_ENDIAN, defined in <boost/mpl/aux_/config/endian.hpp>, is currently set to zero. (Double-check me if I named it correctly.) * In case no one has noticed--and judging from the contents of pqs3_0_0.zip, this seems to be the case--there is now a math::inverse metafunction, so you don't need to roll your own reciprocal<>. Cromwell D. Enage __________________________________________ Yahoo! DSL Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com

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Multiple build errors of boost 1.33.1 on Linux
by Daniel Jahre 15 Jan '06

15 Jan '06

Hello, I tried to compile boost with gcc 3.4.x and 4.0.2 on Linux. With the latter I finally managed to build boost but let's come to this later. I tried gcc 3.4.2 and 3.4.4 both producing the following errors: `.L17959' referenced in section `.rodata' of bin/boost/libs/regex/build/libboost_regex.so/gcc/release/shared-linkable-true/ instances.o: defined in discarded section `.gnu.linkonce.t._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iterator IPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE15match_startmarkEv' of bin/boost/libs/regex/ build/libboost_regex.so/gcc/release/shared-linkable-true/instances.o ... see the complete logfile at http://lospalmos.net/boost-logs/boost-gcc-3.4.4.log This happens with different versions of binutils. With gcc4 these linker errors vanished, but I figured out that there are hardcoded depencies on libicu even when the build system claims that it has switched ICU off. So the log says: Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (and if you don't know what ICU is then you probably don't need it). but later I found that errors on 8 targets: /usr/lib/gcc/i586-unknown-linux-gnu/4.0.2/../../../../i586-unknown-linux-gnu/bin/ld: cannot find -licui18n collect2: ld returned 1 exit status see the complete log at http://lospalmos.net/boost-logs/boost-gcc-4.0.2.log I "fixed" this by installing ICU but still consider it a bug. Cheers, Daniel who is currently working on the boost package for ROCK Linux

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[typeof] various issues
by Tobias Schwinger 15 Jan '06

15 Jan '06

1.)[ With MSVC8 I have to explicitly #define BOOST_TYPEOF_COMPLIANT in order to enable the type 'void' to be registered. A bug? 2.) Shouldn't there be a forwarding header in the boost directory so the user can #include <boost/typeof.hpp> instead of #include <boost/typeof/typeof.hpp> ? 3.) There are numerous tab-characters in the source (not that I care much, but while we're at it)... Regards, Tobias

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