June 2005 - Boost - lists.preview.boost.org

[Type Traits] AIX 5.1/vacpp6: is_enum fails to compile (Was: documentation on performing regression tests ?)
by Aleksey Gurtovoy 04 Jun '05

04 Jun '05

Vincent Jamart writes: >> > When I lauch the tests on AIX 5.1 (vacpp6) with: >> > python ./regression.py --runner=FFT-vacpp_6 --toolset=vacpp >> > >> > I then have these messages that I'm investigating the cause: [...] > # Building "process_jam_log" (/home/qa/cvsboost/boost/tools/build/jam_src/bin.aix/bjam "-sBOOST_BUILD_PATH=/home/qa/cvsboost:/home/qa/cvsboost/boost/tools/build/v1" "-sBOOST_ROOT=/home/qa/cvsboost/boost" "-sTOOLS=vacpp")... > "/home/qa/cvsboost/boost/boost/type_traits/is_enum.hpp", line 95.33: 1540-0063 (S) The text "<" is unexpected. > "/home/qa/cvsboost/boost/boost/type_traits/is_enum.hpp", line 147.41: 1540-0700 (I) The previous message was produced while processing "struct boost::detail::is_enum_helper<0>::type<const std::basic_string<char,std::char_traits<char>,std::allocator<char> > >". > "/home/qa/cvsboost/boost/boost/type_traits/is_enum.hpp", line 160.40: 1540-1269 (S) The template argument for the non-type template parameter of type "bool" must be an integral constant expression. John, do you have any ideas what's up here? -- Aleksey Gurtovoy MetaCommunications Engineering

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Boost regression notification
by Douglas Gregor 03 Jun '05

03 Jun '05

Boost regression test failures ------------------------------ Report time: 2005-06-03T22:18:21Z Purpose: You are receiving this report because one of the libraries you maintain has regression test failures that are not accounted for. Detailed report: http://engineering.meta-comm.com/boost-regression/CVS-HEAD/developer/issues… 795 failures in 17 libraries: date_time (23) filesystem (1) iostreams (28) iterator (1) multi_index (57) numeric/interval (7) parameter (4) program_options (21) python (2) random (2) range (1) regex (6) serialization (609) spirit (3) test (23) thread (4) wave (3) |date_time| testlocal_time: vc-8_0 testlocal_time_input_facet: vc-8_0 testtime_input_facet: vc-8_0 testtime_serialize: gcc-3.3.5-linux gcc-3_3-darwin mingw-3_4_2 vc-7_1 vc-8_0 testtime_serialize_std_config: gcc-3.3.5-linux gcc-3_3-darwin mingw-3_4_2 vc-7_1 vc-8_0 testtime_serialize_xml: gcc-3.3.5-linux gcc-3_3-darwin mingw-3_4_2 vc-7_1 vc-8_0 testtime_serialize_xml_std_config: gcc-3.3.5-linux gcc-3_3-darwin mingw-3_4_2 vc-7_1 vc-8_0 |filesystem| operations_test: cw-9_5-darwin |iostreams| bzip2_test: cw-9_4 cw-9_4 code_converter_test: gcc-2.95.3-stlport-4.5.3-linux finite_state_filter_test: cw-8_3 cw-9_5-darwin vc7 gzip_test: cw-9_4 cw-9_4 cw-9_5-darwin gcc-2.95.3-stlport-4.5.3-linux gcc-3.3.5-linux gcc-3.4.3-linux gcc-3_3-darwin gcc-4.0.0-linux intel-8.1-linux msvc mapped_file_test: cw-8_3 zlib_test: cw-9_4 cw-9_4 cw-9_5-darwin gcc-2.95.3-linux gcc-2.95.3-stlport-4.5.3-linux gcc-3.3.5-linux gcc-3.4.3-linux gcc-3_3-darwin gcc-4.0.0-linux intel-8.1-linux msvc |iterator| filter_iterator_test: borland-5_6_4 |multi_index| test_basic: msvc msvc-stlport vc7 test_capacity: msvc msvc-stlport vc7 test_comparison: msvc msvc-stlport vc7 test_composite_key: msvc msvc-stlport vc7 test_conv_iterators: msvc msvc-stlport vc7 test_copy_assignment: msvc msvc-stlport vc7 test_hash_ops: msvc msvc-stlport vc7 test_iterators: msvc msvc-stlport vc7 test_list_ops: msvc msvc-stlport vc7 test_modifiers: msvc msvc-stlport vc7 test_mpl_ops: msvc msvc-stlport vc7 test_observers: msvc msvc-stlport vc7 test_projection: msvc msvc-stlport vc7 test_range: msvc msvc-stlport vc7 test_safe_mode: msvc msvc-stlport vc7 test_set_ops: msvc msvc-stlport vc7 test_special_list_ops: msvc msvc-stlport vc7 test_special_set_ops: msvc msvc-stlport vc7 test_update: msvc msvc-stlport vc7 |numeric/interval| det: cw-9_5-darwin integer: cw-9_5-darwin mul: cw-9_5-darwin overflow: cw-9_5-darwin pi: cw-9_5-darwin pow: cw-9_5-darwin test_float: cw-9_5-darwin |parameter| basics: borland-5_6_4 macros: borland-5_6_4 sfinae: borland-5_6_4 vc-7_1 |program_options| cmdline_test: borland-5_6_4 vc7 cmdline_test_dll: borland-5_6_4 vc7 parsers_test: borland-5_6_4 intel-8.1-linux vc7 parsers_test_dll: borland-5_6_4 intel-8.1-linux vc7 positional_options_test: borland-5_6_4 positional_options_test_dll: borland-5_6_4 unicode_test: vc7 unicode_test_dll: cw-9_5-darwin gcc-3_3-darwin gcc-3_3-darwin vc7 variable_map_test: borland-5_6_4 vc7 variable_map_test_dll: borland-5_6_4 vc7 |python| numpy: gcc-3.3.5-linux vector_indexing_suite: msvc-stlport |random| random_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.5.3-linux |range| mfc: gcc-3.3.5-linux |regex| 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vc7 test_simple_class_text_archive_dll: cw-9_5-darwin msvc vc7 test_simple_class_text_warchive_dll: cw-9_5-darwin msvc vc7 test_simple_class_xml_archive_dll: cw-9_5-darwin msvc vc7 test_simple_class_xml_warchive_dll: cw-9_5-darwin msvc vc7 test_split_binary_archive_dll: msvc vc7 test_split_text_archive_dll: cw-9_5-darwin msvc vc7 test_split_text_warchive_dll: cw-9_5-darwin msvc vc7 test_split_xml_archive_dll: msvc vc7 test_split_xml_warchive_dll: cw-9_5-darwin msvc vc7 test_tracking_binary_archive_dll: msvc vc7 test_tracking_text_archive_dll: cw-9_5-darwin msvc vc7 test_tracking_text_warchive_dll: cw-9_5-darwin msvc vc7 test_tracking_xml_archive_dll: msvc vc7 test_tracking_xml_warchive_dll: cw-9_5-darwin msvc vc7 test_unregistered_binary_archive_dll: msvc vc7 test_unregistered_text_archive_dll: msvc vc7 test_unregistered_text_warchive_dll: msvc vc7 test_unregistered_xml_archive_dll: msvc vc7 test_unregistered_xml_warchive_dll: msvc vc7 test_variant_binary_archive_dll: msvc vc7 test_variant_text_archive_dll: cw-9_5-darwin msvc vc7 test_variant_text_warchive_dll: cw-9_5-darwin msvc vc7 test_variant_xml_archive_dll: cw-9_5-darwin msvc vc7 test_variant_xml_warchive_dll: cw-9_5-darwin msvc vc7 test_vector_binary_archive_dll: msvc vc7 test_vector_text_archive_dll: cw-9_5-darwin msvc vc7 test_vector_text_warchive_dll: cw-9_5-darwin msvc vc7 test_vector_xml_archive_dll: cw-9_5-darwin msvc vc7 test_vector_xml_warchive_dll: cw-9_5-darwin msvc vc7 test_void_cast_dll: vc7 |spirit| bug_fixes: cw-9_5-darwin bug_fixes_debug: cw-9_5-darwin owi_mt_tests: gcc-3_3-darwin |test| boost_check_equal_str: borland-5_6_4 errors_handling_test: cw-9_5-darwin vc-8_0 ifstream_line_iterator_test: gcc-3.4.3-linux gcc-4.0.0-linux mingw-3_4_2 test_fp_comparisons: borland-5_6_4 msvc msvc-stlport vc7 test_tools_test: cw-9_4 cw-9_4 cw-9_5-darwin token_iterator_test: borland-5_6_4 cw-8_3 cw-9_4 cw-9_4 gcc-2.95.3-linux gcc-2.95.3-stlport-4.5.3-linux gcc-4.0.0-linux vc7 wide_string: vc-7_1 vc-8_0 |thread| test_read_write_mutex: borland-5_6_4 test_thread_lib: cw-8_3 test_tss_lib: cw-9_4 cw-9_4 |wave| test_slex_lexer: cw-9_5-darwin testwave: cw-8_3 cw-9_5-darwin

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Keeping track of library maintainers
by Doug Gregor 03 Jun '05

03 Jun '05

It isn't always obvious who maintains a given library. The authors listed in the documentation have often come and gone, and now someone else handles it. So, I've started the file libs/maintainers.txt, which I hope we can keep up-to-date with the maintainers for each library. I've initialized the file with all of the libraries listed in the regression tests, and put in the maintainers that I believe are still active. Please update the list in CVS or reply with any changes that need to be made. Doug algorithm/minmax Herve Bronnimann <hbr -at- poly.edu> algorithm/string Pavol Droba <droba -at- topmail.sk> any array assign Thorsten Ottosen <nesotto -at- cs.auc.dk> bind Peter Dimov <pdimov -at- mmltd.net> concept_check config John Maddock <john -at- johnmaddock.co.uk> conversion crc date_time Jeff Garland <jeff -at- crystalclearsoftware.com> disjoint_sets dynamic_bitset filesystem Beman Dawes <bdawes -at- acm.org> format function Douglas Gregor <dgregor -at- cs.indiana.edu> functional functional/hash Daniel James <daniel -at- calamity.org.uk> graph Douglas Gregor <dgregor -at- cs.indiana.edu> integer io iostreams Jonathan Turkanis <technews -at- kangaroologic.com> iterator David Abrahams <dave -at- boost-consulting.com>, Thomas Witt <witt - at - acm.org> lambda Jaakko Jarvi <jarvi -at- cs.tamu.edu> logic Douglas Gregor <dgregor -at- cs.indiana.edu> math Hubert Holin <Hubert.Holin -at- meteo.fr> mpl Aleksey Gurtovoy <agurtovoy -at- meta-comm.com>, David Abrahams <dave -at- boost-consulting.com> multi_array Ronald Garcia <garcia -at- osl.iu.edu> multi_index Joaquin M Lopez Munoz <joaquin -at- tid.es> numeric/conversion Fernando Cacciola <fernando_cacciola -at- ciudad.com.ar> numeric/interval Sylvain Pion <Sylvain.Pion -at- sophia.inria.fr>, Herve Bronnimann <hbr -at- poly.edu>, Guillaume Melquiond <guillaume.melquiond -at- ens-lyon.fr> numeric/ublas optional Fernando Cacciola <fernando_cacciola -at- ciudad.com.ar> parameter David Abrahams <dave -at- boost-consulting.com>, Daniel Wallin <dalwan01 -at- student.umu.se> pool preprocessor program_options Vladimir Prus <ghost -at- cs.msu.su> property_map Douglas Gregor <dgregor -at- cs.indiana.edu> ptr_container Thorsten Ottosen <nesotto -at- cs.auc.dk> python David Abrahams <dave -at- boost-consulting.com> random range Thorsten Ottosen <nesotto -at- cs.auc.dk> rational regex John Maddock <john -at- johnmaddock.co.uk> serialization Robert Ramey <ramey -at- rrsd.com> signals Douglas Gregor <dgregor -at- cs.indiana.edu> smart_ptr Beman Dawes <bdawes -at- acm.org>, Peter Dimov <pdimov -at- mmltd.net> spirit Joel de Guzman <djowel -at- gmail.com> static_assert John Maddock <john -at- johnmaddock.co.uk> test Gennadiy Rozental <gennadiy.rozental -at- thomson.com> thread Michael Glassford <glassfordm -at- hotmail.com> timer Beman Dawes <bdawes -at- acm.org> tokenizer tuple Jaakko Jarvi <jarvi -at- cs.tamu.edu> type_traits John Maddock <john -at- johnmaddock.co.uk>, David Abrahams <dave -at- boost-consulting.com> utility variant wave Hartmut Kaiser <hartmut.kaiser -at- gmail.com>

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Customer Friendlier Boost Installation
by Paul A Bristow 03 Jun '05

03 Jun '05

Recently we had a flurry of discussion of why Boost is not more widely used. I have used some bits of Boost happily for years, but recently I felt I had to use it 'properly' so concluded it was time I used the bjam build system - something I had felt looked a bit clever. Indeed my suspicion was proved correct - I couldn't get it to work. The instructions are far too Unix/Make oriented for this mere Windows hacker; the Wiki Windows specific instructions are much better but suggest copying (duplicating) a lot of files to avoid an addition to the include directories, and don't apply to the most recent compilers. Victor Wagner gave some hints recently using environment variables, but not the full text. I don't doubt the usefulness of the bjam to the congescenti - only with this could the incredibly impressive build & test system allow all the cracks and chasms of compiler non-compliance and language imprecision to be papered over - Boost's great strength. But if we are to interest your average Windows IDE programmer, for whom MAKE is a blank or a distant nightmare, IMO we need some much better and simpler instructions, including lots of examples of input and output, and to be as well tested as the rest of Boost code. Like it or not, these are the potential customers and I spoken to many who are put off by the 'build barrier'. I suggest that we explicitly say that you can use all of Boost (except the ones that must have built libraries) by adding to the include list - and say exactly how in Windows IDE-ese. If you share my concern, would some someone like to prepare something? Or at least provide details of their way of doing it. I will be willing to help with checking/editing. Paul Paul A Bristow Prizet Farmhouse, Kendal, Cumbria UK LA8 8AB +44 1539 561830 +44 7714 330204 mailto: pbristow(a)hetp.u-net.com

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RE: [boost] Re: Typeof: Review result
by Powell, Gary 03 Jun '05

03 Jun '05

>Meanwhile I am very much puzzled with the inconsistency of rather high >download activity and relatively low amount of feedback the Typeof library >has received on the list. If somebody could offer a reasonable explanation >of this fact, it would help us a lot in our future work with boost. >Best regards, >Arkadiy I suspect its because while a "Typeof" library is very useful, its tedious code to understand. And that's coming from someone who wrote one, with help from Jaakko Jarvi.. (lambda) And I too had intended to at least take a look at this library with the future intent on dropping the internal version in lambda, as I'm sure Joel is too for spirit. However at this time in my life no amount of delay would have helped unless we are talking about 2008.. when I should again have a quieter life. However I will try and give it a once over knowing that any comments are well past the due date. IMO if there are 3 decent reviews then that is probably enough. Still though its a sad state of the world's affairs with a list in the low thousands of users we can't muster more than 3 people with enough time to look at something new and cool. Yours, -Gary-

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yield statement proposal
by Maksym Motornyy 03 Jun '05

03 Jun '05

Hi all, As of version 2.0 C# will have yield statement. It intended for simplifying iterator development. Yield suspends execution of iterator code and resumes it on next increment. Thus complex traversal iterators are much easier to write in natural loop-like form instead of unroll them. Consider following example (C#): public IEnumerator< int > GetEnumerator() { for ( int i = 1; i < 4; ++i ) for ( int j = 1; j < 4; ++i ) yield return i * j; } Such iterator will generate following sequence: 1 2 3 2 4 6 3 6 9. The same code in C++ (using my library) will look like: class simple_generator { public: YIELD_BEGIN_WITH_CTOR( simple_generator, int ) YIELD_FOR_0( i = 1, i < 4, ++i ) YIELD_FOR_1( j = 1, j < 4, ++j ) YIELD_RETURN( i * j ) YIELD_END_FOR_1 YIELD_END_FOR_0 YIELD_END private: int i; int j; }; int main( int, char ** ) { for ( simple_generator g; !g.at_end(); ++g ) cout << *g << " "; return 0; } Have a look at few more examples: Example 1: YIELD_BEGIN_WITH_CTOR( simple_generator, string ) YIELD_RETURN( "Hello," ) YIELD_RETURN( "world!" ) YIELD_END Will print "Hello, world!" in two iterations with the above main() function. Example 2: YIELD_BEGIN_WITH_CTOR( simple_generator, int ) YIELD_FOR( i = 0, i < 10, ++i ) YIELD_IF( i % 2 == 0 ) YIELD_CONTINUE YIELD_END_IF YIELD_RETURN( i ) YIELD_END_FOR YIELD_END Will print "1 3 5 7 9 ". If anyone interested in such thing? Sincerely yours, Maksym Motornyy.

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An interpreter: useful proposal?
by Daniel Gutson 03 Jun '05

03 Jun '05

Hi there, I'm developing an interpreter library support for a project, and I was wondering whether this could be of any help out there. Would it be useful? It provides some structured basic facilities, such as variables, l- and r-values, expressions, functions, subroutines, nested statements, but no object orientation yet. Please let me know whether it's worth the effort to share it here! (since there's still some work to be done :) ). Rgds, Daniel.

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[date_time] CW-9 failures.
by Rene Rivera 03 Jun '05

03 Jun '05

There are some failures for date_time with CW-9 (and similar errors in CW-8): CW-9.5 on Mac... http://tinyurl.com/bwhsw http://tinyurl.com/93nh4 CW-9.4 on Windows... http://tinyurl.com/75t78 http://tinyurl.com/br2b5 CW-8.3 on Windows... http://tinyurl.com/85nf5 http://tinyurl.com/9gfpn They have this as the reason: "[ J. Garland ] Some older compilers are confused by the template code here. These are new features to date-time in 1.33 and there is no plan to backport to these non-compliant compilers." Now I don't particularly think of CW-9 as an "older" compiler. So is that really the reason? Or is it just that it hasn't been investigated? -- -- Grafik - Don't Assume Anything -- Redshift Software, Inc. - http://redshift-software.com -- rrivera/acm.org - grafik/redshift-software.com -- 102708583/icq - grafikrobot/aim - Grafik/jabber.org

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RE: [boost] Re: yield statement proposal
by Marcin Tustin 03 Jun '05

03 Jun '05

> -----Original Message----- > From: Giovanni P. Deretta [mailto:gpderetta@gmail.com] > Sent: 03 June 2005 03:15 > To: boost(a)lists.boost.org > Subject: Re: [boost] Re: yield statement proposal > Speaking of more Boost centric stuff? There has been any > proposal of a coroutine library? I think it should definitely > be useful and not really that hard to implement (fibers on > windows and makecontext or the setjump/sigaltstack trick on > unices). Anyone interested? What about a continuation library? Then co-routines could simply be built on top of that, along with everything else that can be built on top of continuations.

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Template argument deduction question
by Vladimir Prus 03 Jun '05

03 Jun '05

Hello, the program_options library fails one tests on EDG compilers (Intel, Como), which a failure to deduce template arguments for a certain call. After reading the standard for some time, I failed to understand the reason. Below is the test program: char* cmdline3_[1] = {}; template<class charT> void func(const charT* const argv[]) {} int main() { // P is 'const charT* const argv[]'cmdline3_ // A is 'char* cmdline3_[]' // // According to 14.8.2.1/2 // If P is not reference type // -If A is an array type, the pointer type produced // by the array-to-pointer standard convertion (4.2) // is used in place of A for type deduction. // // So, A should become 'char**' // The following does not compile. func(cmdline3_); char** p = cmdline3_; // This does compile, even though the argument type used for // type deduction should be the same as in example above. func(p); } Anybody can explain what's going on? TIA, Volodya

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