August 2007 - Boost - lists.preview.boost.org

bad include guards
by Steven Watanabe 26 Jan '17

26 Jan '17

AMDG The following pairs of files have identical include guards ./boost/concept_check/general.hpp ./boost/concept/detail/msvc.hpp ./boost/concept_check/msvc.hpp ./boost/concept/detail/msvc.hpp ./boost/filesystem/cerrno.hpp ./boost/cerrno.hpp ./boost/interprocess/containers/tree.hpp ./boost/interprocess/containers/detail/tree.hpp ./boost/mpl/min_max.hpp ./boost/mpl/max.hpp ./boost/mpl/vector/aux_/front.hpp ./boost/mpl/list/aux_/front.hpp ./boost/multi_index/identity_fwd.hpp ./boost/multi_index/identity.hpp ./boost/python/pointee.hpp ./boost/python/detail/pointee.hpp ./boost/spirit/phoenix/closures.hpp ./boost/lambda/closures.hpp ./boost/xpressive/proto/v1_/proto_typeof.hpp ./boost/xpressive/proto/proto_typeof.hpp ./libs/config/test/boost_no_dep_nested_class.ipp ./libs/config/test/boost_has_vc6_mem_templ.ipp ./libs/config/test/boost_no_mem_templates.ipp ./libs/config/test/boost_has_vc6_mem_templ.ipp ./libs/config/test/boost_no_std_allocator.ipp ./libs/config/test/boost_has_vc6_mem_templ.ipp ./libs/conversion/test.hpp ./libs/any/test.hpp ./libs/interprocess/example/print_container.hpp ./libs/interprocess/example/printcontainer.hpp ./libs/interprocess/test/expand_bwd_test_template.hpp ./libs/interprocess/test/allocation_test_template.hpp ./libs/interprocess/test/printcontainer.hpp ./libs/interprocess/example/printcontainer.hpp ./libs/interprocess/test/print_container.hpp ./libs/interprocess/example/printcontainer.hpp ./libs/iostreams/test/detail/utf8_codecvt_facet.hpp ./boost/detail/utf8_codecvt_facet.hpp ./libs/regex/test/regress/test_regex_search.hpp ./libs/regex/test/regress/test_partial_match.hpp ./libs/serialization/test/C.hpp ./libs/serialization/test/A.hpp ./libs/xpressive/perf/regex_comparison.hpp ./libs/regex/performance/regex_comparison.hpp ./tools/inspect/time_string.hpp ./tools/common/time_string.hpp In Christ, Steven Watanabe

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Proposed addition to the iterator library for iterating over all tuples.
by Alex Mendes da Costa 19 Jun '09

19 Jun '09

Hi folks: I quite often have to write code to do the following: Given N sequences, generate all the N-tuples s.t. the i'th element in each tuple is drawn from the i'th sequence. For example, if sequence S1 is { 1, 2, 3 } and sequence S2 is { 10, 20 }, I need to generate these tuples: (1, 10), (2, 10), (1, 20), (2, 20). I think this problem could be solved elegantly with a iterator similar to zip_iterator. I have some questions: (1) Is there already a way to do this in boost? (2) If not, would this be a worthwhile addition to the iterator library? (3) If so, could I contribute code for this, or must the existing library owners write it? (4) If so, how would I go about getting my code added? Most of the docs seem to be about submitting entire libraries, rather than extensions to existing libraries. Thanks, Alex

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[IOStreams] Opinion on test case needed
by Frank Birbacher 06 Jan '08

06 Jan '08

Hi! I had problems using iostreams::stream<file_descriptor> with Windows and MSVC 8 Express. The file_descriptor had a bug and failed seeking. But the error had gone unnoticed. Because of this I wrote a test case for this in hope to discover an error in IOStreams (source: see below). I did not discover one. Instead the test runs fine on linux/gcc 4.1.2 but fails on Windows/MSVC8Express (test run: see below). I based the test on "Standard C++ IOStreams and Locales" (Langer&Kreft), Section 1.3 "The Stream State". And I found the IOStreams library is just using std::iostream for handling the errors. So is MSVC buggy in this regard? Or am I missing something? Source of test case in Trac SVN Browser: http://svn.boost.org/trac/boost/browser/sandbox-branches/birbacher/fix_iost… Result of test case on platform Windows/MSVC 8 Express: > ...using <p..\..\..\bin.v2\libs\iostreams\test\error_test.test\msvc-8.0express\debug>error_test.exe... > testing.capture-output ..\..\..\bin.v2\libs\iostreams\test\error_test.test\msvc-8.0express\debug\error_test.run > ====== BEGIN OUTPUT ====== > Running 12 test cases... > error_test.cpp(81): error in "wrap_nothrow <&test_seekg>": exception thrown by function(stream) > error_test.cpp(66): error in "wrap_nothrow <&test_seekg>": stream still good > error_test.cpp(68): error in "wrap_nothrow <&test_seekg>": stream did not set badbit > error_test.cpp(69): error in "wrap_nothrow <&test_seekg>": stream did not fail > error_test.cpp(71): error in "wrap_nothrow <&test_seekg>": stream does not report failure by operator ! > error_test.cpp(73): error in "wrap_nothrow <&test_seekg>": stream does not report failure by operator void* > error_test.cpp(66): error in "wrap_throw <&test_seekg>": stream still good > error_test.cpp(68): error in "wrap_throw <&test_seekg>": stream did not set badbit > error_test.cpp(69): error in "wrap_throw <&test_seekg>": stream did not fail > error_test.cpp(71): error in "wrap_throw <&test_seekg>": stream does not report failure by operator ! > error_test.cpp(73): error in "wrap_throw <&test_seekg>": stream does not report failure by operator void* > unknown location(0): fatal error in "wrap_throw_delayed<&test_seekg>": std::runtime_error: bad seek > error_test.cpp(73): last checkpoint > error_test.cpp(81): error in "wrap_nothrow <&test_seekp>": exception thrown by function(stream) > error_test.cpp(66): error in "wrap_nothrow <&test_seekp>": stream still good > error_test.cpp(68): error in "wrap_nothrow <&test_seekp>": stream did not set badbit > error_test.cpp(69): error in "wrap_nothrow <&test_seekp>": stream did not fail > error_test.cpp(71): error in "wrap_nothrow <&test_seekp>": stream does not report failure by operator ! > error_test.cpp(73): error in "wrap_nothrow <&test_seekp>": stream does not report failure by operator void* > error_test.cpp(66): error in "wrap_throw <&test_seekp>": stream still good > error_test.cpp(68): error in "wrap_throw <&test_seekp>": stream did not set badbit > error_test.cpp(69): error in "wrap_throw <&test_seekp>": stream did not fail > error_test.cpp(71): error in "wrap_throw <&test_seekp>": stream does not report failure by operator ! > error_test.cpp(73): error in "wrap_throw <&test_seekp>": stream does not report failure by operator void* > unknown location(0): fatal error in "wrap_throw_delayed<&test_seekp>": std::runtime_error: bad seek > error_test.cpp(73): last checkpoint > > *** 24 failures detected in test suite "Master Test Suite" > > EXIT STATUS: 201 > ====== END OUTPUT ====== Any opinions on this? Any suggestions on what to do about it? Frank

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[fusion] list/detail/at_impl.hpp, Suggest recrusive elem_at_c instead of recursive apply
by Larry Evans 24 Oct '07

24 Oct '07

In boost/fusion/.../list/detail/at_impl.hpp the apply is recursive; however, the only reason for the recursion is to "find the right element type". The other reason for apply is the same as that of the apply in.../vector/detail/at_impl.hpp. "find the right element type" in vector's at_impl is done with mpl::at. The similarity between list and vector at_impl would be more apparent if: template <typename Sequence, int N> struct elem_at_c { typedef typename mpl::eval_if< mpl::bool_<N == 0> , mpl::identity<typename Sequence::car_type> , elem_at_c<typename Sequence::cdr_type, N-1> >::type type; }; were used to find the right element type. Then the frist part of list::at_impl::apply would be: template <typename Sequence, typename N> struct apply { typedef elem_at_c<Sequence, N::value> element; typedef typename mpl::eval_if< is_const<Sequence> , detail::cref_result<element> , detail::ref_result<element> >::type type; which is very similar to the counterpart in vector: template <typename Sequence, typename N> struct apply { typedef mpl::at<typename Sequence::types, N> element; typedef typename mpl::eval_if< is_const<Sequence> , detail::cref_result<element> , detail::ref_result<element> >::type type;

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[soc] Boost.extension/reflection project advances
by Mariano Gabriel Consoni 16 Oct '07

16 Oct '07

Hi Community...! As some of you may know, I'm working on a SoC project called "Boost.extensions and reflection". This mail is just to keep you informed about the project advances. At this time, we have very good news. The library is now near completion, and we expect submitting it for revision in the next days. We've been worked the last two weeks in the following tasks: - Code style: continued improving the code style according Boost guidelines. - Build: improved the Jamfiles to work well in more platforms. - Boost::function: migrated some code to (optionally) use boost::function. - Benchmarks: made new benchmarks to test the new integrations. - Performance analysis: documented the results of the benchmarks. - Preprocessor: replaced a lot of boiler-plate code with (optional) boost::preprocessor macros. - Dependencies flags: documented the optional dependencies and how to enable them. As I have finished all the tasks planned in my proposal (and a lot more :) ) I will advance to Reflection part and Jeremy (Pack, original author) will finish some remaining tasks of Extension. Bye! -- Mariano

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[ANN] Xpressive 2.0 pre
by Eric Niebler 12 Oct '07

12 Oct '07

It's a poorly kept secret that I've been adding new features to Xpressive on CVS HEAD for a while now. So here are the features already implemented (documentation forthcoming) for Xpressive 2.0: << Semantic Actions >> Specify code to execute when parts of a regex match, a-la Spirit's semantic actions. Eg.: if you want to parse a string of name/value pairs into a std::map, you might: std::map<std::string, int> result; std::string str("aaa=>1 bbb=>23 ccc=>456"); // Like "(\\w+)=>(\\d+)": sregex pair = ( (s1= +_w) >> "=>" >> (s2= +_d) ) [ ref(result)[s1] = as<int>(s2) ]; sregex rx = pair >> *(+_s >> pair); if(regex_match(str, rx)) { assert(result["aaa"] == 1); assert(result["bbb"] == 23); assert(result["ccc"] == 456); } The actions are placed on a queue and executed in order only when the regex match succeeds. << Custom Assertions >> Use the check() function to create a boolean predicate that can participate in the match. Here's a regex that recognizes two integers only if the first is less than the second: sregex rx = ( (s1= +_d) >> ' ' >> (s2= +_d) ) [ check( as<int>(s1) < as<int>(s2) ) ]; Unlike actions, predicates execute immediately. You can also define the predicate out-of-line as a function object. << Dynamic Regex Grammars with Named Regexes >> Using regex_compiler, you can map a name to a regex object, and then refer to that regex from another by name. In this way, you can build grammars from regexes at runtime. sregex_compiler comp; sregex rx = comp.compile("^bar(?$RE)baz$"); comp.compile("(?$RE=)\\d+ \\d+"); There's an alternate syntax for associating a name with a regex that you can use to nest a static regex in a dynamic one. Eg., the last line above could be: comp["RE"] = +_d >> ' ' >> +_d; With these changes, you can now nest static and dynamic regexes within each other freely, giving you lots of flexibility to build grammars and modify them on the fly. << Named Captures >> For dynamic regular expressions, you can create a named capture with (?P<name> ...). You can refer back to the named capture with (?P=name). In substitution strings (for use with regex_replace()), you can refer back to a named capture with \\g<name> when using the format_perl or format_all flags. And more .... I'd like to give props to Dave Jenkins who has been doing m4d things with this stuff already, and who has given me a laundry list of other features he'd like. The new features are only available in CVS HEAD, for now. Feedback is welcome. -- Eric Niebler Boost Consulting www.boost-consulting.com

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Boost threadsafe singleton?
by Robert Ramey 21 Sep '07

21 Sep '07

I'm review the serialization library with the eye of making it threadsafe. I think that very useful in this effort would be lightweight threadsafe singleton. There are tons of cyberbits spilled on this topic - but much to my suprise and disappointment, no boost library for this purpose. Someone please tell me its here but that I just haven't found it. Robert Ramey

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Variable Preprocess Metaprogramming?
by Atry 20 Sep '07

20 Sep '07

As we known, there is a preprocess metaprogramming library in boost, but it is not flexible enough. we are unable to define an custom preprocess loop(something like #for or #while ?), and we are also unable to use recursion. I have an idea to do that, C/C++ allows recursion of #include, so we can put the codes we want to evaluate repeatedly to a head, and include itself depends on a preprocess condition. But if we wrote code below, we would meet a error of macro redefinition. /**** foo.hpp ****/ #if FOO < 10 // do something with I # define FOO FOO + 1 # include "foo.hpp" #endif /**** foo.hpp ****/ /**** bar.hpp ****/ #define FOO 0 #include "foo.hpp" /**** bar.hpp ****/ The problem is that an macro must not depends on itself. Thus, to change a preprocess variant, I use a bit of #if to transfer value of a macro to some temporary macro. see my code below: /**** begin_set_value.hpp ****/ #if (BOOST_VPP_VALUE & (1 << 0)) == 0 #define BOOST_VPP_TEMPORARY_BIT_0 0 #else #define BOOST_VPP_TEMPORARY_BIT_0 1 #endif #if (BOOST_VPP_VALUE & (1 << 1)) == 0 #define BOOST_VPP_TEMPORARY_BIT_1 0 #else #define BOOST_VPP_TEMPORARY_BIT_1 1 #endif /* ... */ #if (BOOST_VPP_VALUE & (1 << 30)) == 0 #define BOOST_VPP_TEMPORARY_BIT_30 0 #else #define BOOST_VPP_TEMPORARY_BIT_30 1 #endif #if (BOOST_VPP_VALUE & (1 << 31)) == 0 #define BOOST_VPP_TEMPORARY_BIT_31 0 #else #define BOOST_VPP_TEMPORARY_BIT_31 1 #endif #undef BOOST_VPP_VALUE #define BOOST_VPP_VALUE \ (BOOST_VPP_TEMPORARY_BIT_0 << 0 ) \ + (BOOST_VPP_TEMPORARY_BIT_1 << 1 ) \ + (BOOST_VPP_TEMPORARY_BIT_2 << 2 ) \ + (BOOST_VPP_TEMPORARY_BIT_3 << 3 ) \ /* ... */ \ + (BOOST_VPP_TEMPORARY_BIT_29 << 29 ) \ + (BOOST_VPP_TEMPORARY_BIT_30 << 30 ) \ + (BOOST_VPP_TEMPORARY_BIT_31 << 31 ) \ /*BOOST_VPP_VALUE*/ /**** begin_set_value.hpp ****/ Now, the BOOST_VPP_VALUE is depends on some of BOOST_VPP_TEMPORARY_BIT_n, and can be used to change the former macro: #define FOO 0 #define BOOST_VPP_VALUE FOO #include "begin_set_value.hpp" #undef FOO #define FOO (BOOST_VPP_VALUE + 1) But, FOO depends on BOOST_VPP_TEMPORARY_BIT_ns, and can not be change again, the solution is that A must a variant depends on some other BIT_n definition instead of directly depends on BOOST_VPP_VALUE. Actually, I implements an variant stack to allocate and release these variant. I think the concept of variable preprocess is useful, if Boost.Typeof or Boost.Bind use that, these code they need would be less than copying same codes. I have upload a sample on vault, file name is variable_preprocess.zip. http://boost-consulting.com/vault/index.php?&direction=0&order=&directory=P… http://boost-consulting.com/vault/index.php?action=downloadfile&filename=va… All code is validated by wave, thank you for your attention.

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Threadsafe singleton - questions
by Robert Ramey 19 Sep '07

19 Sep '07

I'm going through the documentation and now have some questions. I would hope that the documentation could be expanded to include answers to these questions. a) reference is made to a "lease" which sounds like a mutex to me. But its not obvious to me how this should be used. How does the compare with the pattern that I am more familiar with class s : singlton mutex m_mutex ... my_function(...){ scoped_lock(m_mutex); ... } OK - I've looked again and I think its clear to me how this is to be used. We need a tutorial here !!!! b) reference is made to boost::restricted which I couldn't find anywhere. Robert Ramey

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[SVN Configuration] Request an additional MIME type to support Scalable Vector Graphics (SVG)
by Peter Foley 17 Sep '07

17 Sep '07

To upload Scalable Vector Graphics (SVG) images to the Sandbox do I simply update my local subversion configuration (as mentioned here http://tinyurl.com/2zqoqm) to include the MIME details for SVG files or will something need to be updated on the server as well? As mentioned at http://tinyurl.com/2dteq2 RFC 3023 (http://www.ietf.org/rfc/rfc3023.txt) has this to say about the SVG MIME type: ---------- RFC info on SVG ------------- 8.19 Image/svg+xml Content-type: image/svg+xml <?xml version="1.0" ?> Scalable Vector Graphics (SVG) documents are XML documents whose content describes graphical information, as defined by [SVG]. As a format based on XML, SVG documents SHOULD use the '+xml' suffix convention in their MIME content-type identifier. However, no content type has yet been registered for SVG and so this media type should not be used until such registration has been completed. ---------- END RFC info on SVG ------------- Should I simply update my local configuration file to include the line: *.svg = svn:eol-style=native; svn:mime-type=image/svg+xml Any advice would be greatly appreciated. Thanks, Peter.

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Development and Release Practices
by Beman Dawes 14 Sep '07

14 Sep '07

A draft "Development and Release Practices" document is up on the Wiki: http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl?Development_… Comments welcomed! The proposed process refinements are meant to complement the parallel ongoing efforts to improve our tools, but don't depend on any tool improvements. Thus we can get started as soon as we reach sufficient consensus. That said, I think tools are very important, and hope we can rapidly make improvements in both process and tools. --Beman

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Release Tools Analysis Part I: Build systems
by David Abrahams 13 Sep '07

13 Sep '07

This is part 1 of my analysis of our prospects for improving the Boost release process by improving the tools. I'll post something based on this to the wiki after y'all give me an earful about what I got wrong or overlooked. Build System ============ I'm only considering BBv2 and cmake here, because we currently use the former and Doug and Troy have been putting lots of effort into the latter, and Kitware has volunteered to support it for us. Cmake has lots of advantages over BBv2 for developers (e.g. instant build startup time, use favorite development environment) and packagers (e.g. one-line installer target declaration), but these factors are more important for day-to-day development than they are for testing. Instant build startup time would improve test turnaround time, of course, but build startup does not dominate our testing time yet. BBv2 also has overall speed/memory-consumption problems. These might be addressable using the Boehm GC, but the last attempt resulted in crashes (more investigation needed). BBv2 has a few advantages over Cmake for testing. 1. BBv2 can build with multiple toolsets and/or variants in one invocation. That, however, is trivially overcome by using a wrapper script over cmake. 2. BBv2 serializes the output of simultaneous tests, which makes it possible to run tests in parallel with -jN. This is really important for test turnaround time. Even uniprocessors benefit from a low N (like 2) IME, due to disk/cpu tradeoffs. The IBM testers are currently using -j16 to great effect on their big iron. However, output serialization is only important because both Boost's process_jam_log and ctest/dart currently use a parse-the-build-log strategy to assemble the test results. This approach is hopelessly fragile in my opinion. Instead, each build step in a test should generate an additional target that contains the fragment of XML pertaining to that test, and the complete result should be an XML file that is the catenation of all the fragments. Rene is working on that feature for BBv2. I don't expect it would take more than a couple of days to add this feature to either build system, so the advantage of serialization may be easily neutralized. 3. Platform/compiler-independent build specification. This one seems pretty important on the face of it. If library authors' tests won't run on platforms to which they don't have direct access, we'll need to find people to port and maintain test specifications for the other platforms. On the other hand, very few tests are doing anything fancy when it comes to build configuration. To understand the real impact of this BBv2 feature, someone would have to objectively analyze the cmake build specifications Doug and Troy have been working on for complexity and portability. If either of those guys can be objective, it would be fastest if they'd do the analysis. 4. Cmake's built-in programming language is even more horrible, IMO, than bjam's. I bet you get used to it, like anything else, but it does present a barrier to entry. On the other hand, it's my impression that most programming jobs can be done more simply and directly under Cmake because it lacks BBv2's multiple-toolset/variant builds, and so has no need for virtual targets. Neither systems can trace #include dependencies through macros (e.g. #include SOME_MACRO(xyz)), which occasionally leads to inaccurate results from incremental testing. This is an important problem that should be fixed. Based on the above points, I'd say either build system has the potential to work for Boost's testing needs and neither one is substantially closer to being ideal for us (for testing). Since our systems use BBv2 now, it makes sense to concentrate effort there. However, if cmake were to suddenly acquire the XML fragment generation and the analysis of point 3 above showed that portable build specification is easily accomplished in cmake or not very important to our testing needs, I'd probably be vote the other way. -- Dave Abrahams Boost Consulting http://www.boost-consulting.com The Astoria Seminar ==> http://www.astoriaseminar.com

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[date_time, asio, range] Unused argument warning fixes
by Caleb Epstein 12 Sep '07

12 Sep '07

Attached is a patch against the SVN trunk that fixes several unused argument warnings from gcc. With one exception the changes are just commenting out the argument name in the function definition. but there is a more ugly fix in <asio/detail/strand_service.hpp> that is only required when building with NDEBUG defined (e.g. when assert is a noop). Can the owners of the code take a look and either commit the appropriate fixes or give me the go-ahead to do it myself. I don't want to step on any toes. -- Caleb Epstein

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asio forcing the use of handlers?
by Roland Schwarz 11 Sep '07

11 Sep '07

I am just about to find out how I could make use of the asio library, and am wondering if async io also can be done without using handler functions. I recognize that it is possible to use it in a blocked manner as follows: assuming we have an open socket: sock read(sock, buf); ... use the buffer contents ... Now I am wondering if I could also accomplish something like: cp = async_read(sock, buf); ... do something useful ... cp.wait(); .. use the buffer contents ... Thank you, Roland aka speedsnail

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[proto] Calculator Arity Transform and function varargs
by Felipe Magno de Almeida 08 Sep '07

08 Sep '07

Hi, I can't make it out how to do the arity transformation for proto::functions varargs too. Could anybody shed some light? Thanks and best regards, -- Felipe Magno de Almeida

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[test] BOOST_CHECK_NOT_EQUAL wanted
by Kevin Sopp 08 Sep '07

08 Sep '07

Hello, I found this old thread http://lists.boost.org/boost-users/2006/06/20028.php where it said bring up the issue again after 1.34 is released. I intuitively expected a BOOST_CHECK_NOT_EQUAL to exist and typed it in, but it wasn't there! So, here's one more person requesting macros for all comparison operators for the test tools. regards, Kevin Sopp

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Updated Development and Release Practices for 1.35.0
by Beman Dawes 07 Sep '07

07 Sep '07

The Development and Release Practices trac wiki page has been updated. See http://svn.boost.org/trac/boost/wiki/ImprovingPractices The most important changes were refinements of the repository organization and addition of more specific procedures for merging from the trunk to the next release. The merging is described in terms of TortoiseSVN. It would be helpful if someone familiar with command line svn provided an equivalent set of instructions for command line users. I'm trying to restrict the process to things we can do right away, so we can get started on 1.35.0. Comments appreciated. --Beman

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1.34 boost::filesystem::size() issues on OSX PPC (works on OSX Intel though)
by John Zorko 07 Sep '07

07 Sep '07

Hello, all ... When I use v1.34s boost::filesystem::size() implementation on Mac OSX (10.4.10, Intel and PPC), I get different results. It appears to be a byte-ordering issue (since on little-endian machines (I tested on Windows and OSX Intel) it returns the correct result, while on big- endian machines (I tested on OSX PPC) it does not). While this is easy enough to code around, I don't recall reading anything about byte-ordering issues in the boost::filesystem portability guide, so i'm wondering if this is intentional? Regards, John Falling You - exploring the beauty of voice and sound http://www.fallingyou.com

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Can SVN Check for too long and CamelCase file names?
by Paul A Bristow 06 Sep '07

06 Sep '07

I have recently had my wrist slapped by John Maddock, not once, but twice :-(( My offences were committing both Too long filenames, and CamelCaseFileNames. Are either of these crimes that could be prevented by SVN pre-commit rules? Paul PS I have submiited a Trac ticket for Quickbook documentaiton update http://svn.boost.org/trac/boost/ticket/1221 --- Paul A Bristow Prizet Farmhouse, Kendal, Cumbria UK LA8 8AB +44 1539561830 & SMS, Mobile +44 7714 330204 & SMS pbristow(a)hetp.u-net.com

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[thread] RFC standard proposed mutex, read-write mutex, condition
by Howard Hinnant 06 Sep '07

06 Sep '07

Here is a link to a reference implementation and a FAQ for mutexes, locks and condition variables I am currently anticipating proposing for C++ standardization (or subsequent TR). http://home.twcny.rr.com/hinnant/cpp_extensions/concurrency_rationale.html I am posting this link here because this work draws heavily on the boost experience, and I believe feedback from boost users would be valuable. The documentation is scant, chiefly consisting of a "FAQ" which largely centers around questions regarding design decisions that differ from the boost threads package. I'm looking for both agreement and disagreement (and why) on these design decisions from users of the boost threading package. One big difference between this threading package and the boost threading package is the ability to use C++0X language features such as rvalue reference and variadic templates. The rvalue reference is used to make lock types movable but non-copyable. This comes in especially handy with the "upgrade" mutex/locks (see faq). Variadic templates are used for generic locking algorithms which can take an arbitrary number of locks. This code is compiled using Doug Gregor's conceptgcc. So far, only mutexes (including read/write mutexes), locks and conditions are addressed. Yes, C++0X will have a std::thread. It isn't covered in the link above. Any further questions you may supply, I may add to the FAQ (unless there are objections). Anyone is welcome to "boostize" any and all of this code. The reference implementation is intended to be freely shared. However it is currently only addressing POSIX systems. No problems are anticipated in porting to Windows, largely due to the existing boost thread libraries (for which I am extremely grateful to all of those who have worked in this area). Thank you for your time and comments. -Howard

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[graph] SoC update
by Andrew Sutton 05 Sep '07

05 Sep '07

To those interested, // sorrt Alas summer is over. and the students have returned to clog the hallowed (and somewhat narrow) halls of my building... No more quiet days in my lab hacking out Boost.Graph code and documentation. On the brighter side, I have finished - at least to the satisfaction of mentor Jeremy Siek and myself - the goals that I had originally planned for my Summer of Code project. The end results are: - Two new graph classes (undirected and directed) which are intended to make the library more approachable for new developers - A suite of graph measures including degree and closeness centrality, mean geodesic distance, eccentricity, and clustering coefficients. - An algorithm for visiting all cycles in a directed graph (Tiernan's from 1970ish). It works for undirected graphs too, but reports cycles twice (one for each direction). - An algorithm for visiting all the cliques a graph (Bron&Kerbosch). Works for both directed and undirected. - Derived graph measures radius and diameter (from eccentricity) and girth and circumference (from Tiernan), and clique number (from Bron&Kerbosch). - An exterior_property class that helps hides some of the weirdness with exterior properties. - A constant-valued property map - useful for naturally unweighted graphs. - A noop-writing property map - useful when you have to provide an argument, but just don't care about the output. There are also a couple of other informal introductions that need to be polished, documented and tested. These include: - Graph cores - Implemented by David Gleich (@Stanford University) - Deterministic graph generators - capable of creating or inducing specific types of graphs over a vertex set (e.g., star graph, wheel graph, prism graph, etc). There are several other specific types that could be added to this, but I haven't had the time just yet. There are also some introductions in this package that can - or probably should be - backported to existing code. Specifically, issues dealing with vertex and edge indices and how they are mapped into exterior properties. There are also a couple of changes to the current codebase that can be immediately applied. Specifically, this includes new and updated concept checking classes and a completely new archetype system for concept coverage testing. I've also written quickbook docs for much of the new code - and have been slowly folding the older docs in - it's a long process. Also, if you aren't on a Linux box, you can't build the new docs since I'm using Makefiles, graphviz and latex to generate images. So, the up-to- date stuff is here: http://warhol.sdml.cs.kent.edu/~asutton/boost/libs/graph/doc/html/ Most of the "good" docs are toward the bottom of the ToC. I have more to say on the topic, but I will split it into a second email since this is pretty long. Andrew Sutton asutton(a)cs.kent.edu

6 14

SVN update issue
by Vladimir Prus 05 Sep '07

05 Sep '07

Hi, in SVN trunk checkout I'm getting this: ghost@wind:~/Work/Boost/boost-svn/tools/boostbook$ svn up -r38168 svn: REPORT request failed on '/svn/boost/!svn/vcc/default' svn: Target path does not exist I *think* this is caused by renamed of trunk to devel and back to trunk that I observe in "svn log". However, I'm not sure what's the right way to do what I want. Any ideas? - Volodya

3 4

SVN performance issues
by Vladimir Prus 04 Sep '07

04 Sep '07

I have just run this: svn diff http://svn.boost.org/svn/boost/branches/RC_1_34_0/boost/tools/build/v2 http://svn.boost.org/svn/boost/trunk/tools/build/v2 > RC_HEAD.diff and it took about 13 mins. On another machine (with another network), it took 15 mins. I've asked for confirmation on IRC, and two people are at 11 and 13 mins as a write this (and still running). Is there some network or setup issue with SVN server? Maybe the apache connection limit is set too low? - Volodya

8 12

Clang: Open-source C/C++ front end under development
by Doug Gregor 03 Sep '07

03 Sep '07

Hello fellow Boosters, The need for an extensible, complete open-source C++ parser has been discussed on Boost over the years. There are myriad projects that parse approximations to C++ suitable for specific tasks (e.g., documentation generation), but there has never been a community project meant to handle all of C++ or serve as a common platform for new C++ tools. That is going to change, and I hope Boost will be involved. Apple has begun development of "Clang", which aims to be a high- quality C/C++ parser and compiler. Clang is designed as a library for C++ tools, from IDE-supported tools like indexing, searching, and refactoring to documentation tools, static checkers, and a full C++ front end to the Low Level Virtual Machine (LLVM). LLVM is an advanced, open-source compiler infrastructure supporting all of the back-end functionality needed for a C++ compiler. Like LLVM, Clang is written in a modern C++ style, with a clean separation between the different phases of translation in C++ (lexical analysis, parsing, semantic analysis, lowering, code generation, etc.), all of which make Clang a pleasure to work with. Clang is still in the early stages of development. At present, it parses and type-checks most of C, with code generation for some simple constructs. C++ support is not available yet, but Apple has dedicated significant resources to making Clang a successful C++ parser and compiler. That said, Clang needs our help. Collectively, Boost developers have more knowledge about and a deeper understanding of C++ than any other community within C++. We have the C++ expertise to help implement the language well, and the library-design savvy to help build powerful, accessible interfaces that simplify the task of building new and improved tools for C++. The Clang team is asking for help implementing C and C++ features and are very open to new contributors. Clang has the potential to be a top-notch, open-source C++ compiler and tool platform, from which we would all benefit. Let's help Clang get there sooner! Links: Clang: http://clang.llvm.org/ LLVM: http://llvm.org/ Steve Naroff's talk motivating Clang: - Video: http://llvm.org/devmtg/2007-05/09-Naroff-CFE.mov - Slides: http://llvm.org/devmtg/2007-05/09-Naroff-CFE.pdf Clang announcement: http://lists.cs.uiuc.edu/pipermail/llvmdev/2007- July/009817.html Cheers, Doug

21 59

Can some check fix for #766; note on bug reports
by Daryle Walker 03 Sep '07

03 Sep '07

I just fixed and closed the issue at <http://svn.boost.org/trac/boost/ticket/766> with <http://svn.boost.org/trac/boost/changeset/39062>. The changes were only in the comments, but could someone else give them the once over to make sure I didn't mess anything up. BTW, this bug report affected two separate components independently. And the issue with the second component was added via a comment. Please don't do either one of these. It complicates issue assignment. -- Daryle Walker Mac, Internet, and Video Game Junkie darylew AT hotmail DOT com

3 4

Simple yet interesting object factory
by Marco Costalba 03 Sep '07

03 Sep '07

This is a simple yet interesting object factory. Main points are: - Support for many class hierarchies at the same time - Object constructor arguments with generic type - Object constructor overloading - Support for user supplied 'object create' functions - Dynamic class registering/unregistering - No RTTI or special library requirements, only an associative container is used. - And finally the most important: 100% type safe also at runtime Especially constructor overloading and runtime type safety are two niceties you won't find easily googling around. You can view as HTML page a simple and commented test program here: http://digilander.libero.it/mcostalba/simple_factory/main.cpp.html A page with the source is here: http://digilander.libero.it/mcostalba/simple_factory/simple_factory.hpp.html Below are the links to the actual files: http://digilander.libero.it/mcostalba/simple_factory/main.cpp http://digilander.libero.it/mcostalba/simple_factory/simple_factory.hpp I'm sorry if you find the comments a bit "entry level", but they are intended for a wider audience. Finally there are a couple of bugs that I won't reveal ;-) they are not easy to spot and fixing them will complicate the code. Because this is intended more as a presentation of the ideas then production code I will fix them when I'll be confident design is sound. Anyhow I keep a separated test framework with about 40 tests to exercise the factory under different paths. So I would say this is 'working' code. Any comment or hint on how to improve the design or implementation would be very appreciated. Thanks Marco

5 12

Help wanted: porting/testing the Math Toolkit to MacOS X
by John Maddock 02 Sep '07

02 Sep '07

Any MacOS X experts willing to run some tests on the Math Toolkit, and/or help track down any porting issues? The latest code is in the sandbox under "math_toolkit", last time the tests were run on that platform there were still some unresolved issues with the Mac's strange long double type to be resolved... I'd like to get these nailed down if possible before we do a first post-review release. Many thanks, John Maddock.

5 16

Macro/Typedef for the biggest integer for template parameters
by Daryle Walker 01 Sep '07

01 Sep '07

We've talked about this problem off and on for years now, and I'm wondering if we can finally solve it. Many compilers supply built-in integer types beyond (unsigned) long int, but someone told me that there's no guarantee that those super-long types are suitable for use in a value-based template parameter. I'm wondering if we can develop typedefs, maybe in "boost/cstdint.hpp", that describe the largest suitable signed and unsigned built-in integer types that can be used as value-based template parameters. On basically-standard compilers, this would be "unsigned long" and "long". I'm thinking that we could default to boost::[u]intmax_t, and #case it for particular compilers after they choke on not being able to use "long long" or "__int64_t" in a template. (We could test in advance to minimize hardship.) -- Daryle Walker Mac, Internet, and Video Game Junkie darylew AT hotmail DOT com

2 1

[Boost.MPI] How to use with processes on different machines?
by Manuel Jung 01 Sep '07

01 Sep '07

Hi, I would like to know, how i can use Boost.MPI for IPC between different PCs. It is described in the introduction: "Unlike communication in threaded environments or using a shared-memory library, Boost.MPI processes can be spread across many different machines, possibly with different operating systems and underlying architectures." Is there an example, how its done? I cant find one. Or isn't implemented yet? Kind Regards Manuel Jung

2 2

[constrained-value] additional features
by Martin Dowie 01 Sep '07

01 Sep '07

I've managed to download this now (thanks!) and I've played about with added support for floats/doubles. I'd also quite like the idea of being able to retrieve the range of a constrained value so that I can use them in other more constrained values - e.g. degrees in a circle => [0, 359] but sometimes only half a circle is appropriate [0, 179]. I'd like to be able to model this, e.g. typedef bounded_int<int, 0, 359>::type degrees_in_circle; typedef bounded_int<int, degrees_in_circle::first, 180>::type degrees_in_semicircle; That's a bit contrived but hopefully you get my drift. Ada uses 'First and 'Last to get this sort of value and I've always found these sort of attributes (or 'traits') very useful. Cheers -- Martin

2 1

[Wave] injecting standard headers directly, without a file
by Daryle Walker 01 Sep '07

01 Sep '07

[Did I already suggest something like this?...] The Wave preprocessing tool can accept locations for a compiler's system header files. I think the C++ standard allows the standard headers to not be implemented as conventional files. I'm wondering if we can do that, as an experiment. In other words, the Wave library could have an option to inject our version of idealized renditions of the standard headers directly into the token stream, without referencing actual header files. This could catch bugs that assume certain things about actual header files that wouldn't be present in our version. Our standard headers could be in the form of a collection of functions, one for each compiler item (function, type, object, template, macro, etc.). Those functions would be passed in a level of expression (declaration in a secret __boost_std namespace, injection of declaration into the std namespace, full definition in __boost_std namespace [or no namespace for macros]) and a descriptor of the environment (bits per byte, bytes per short/int/long, 2/1-complement or sign-mag, etc.). An inclusion function for each header would call the inclusion functions for each contained item, but only up to the lowest level required. Items originally from other headers would get included if needed, but without injection into std if avoidable. (For instance, #including <iostream> would _not_ get you <istream> and <ostream> for free!) -- Daryle Walker Mac, Internet, and Video Game Junkie darylew AT hotmail DOT com

3 2

[utility] Proposal MSVC workaround for value_initialized - Ticket #1217
by Niels Dekker - mail address until 2008-12-31 31 Aug '07

31 Aug '07

The data of the wrapper class boost::value_initialized<T> may not be initialized properly, when using Microsoft Visual C++. The problem is caused by two different compiler issues regarding value initialization. For details, please read the ticket that I submitted yesterday evening (#1217): http://svn.boost.org/trac/boost/ticket/1217 Fernando Cacciola and I developed a new version of value_init.hpp, offering a workaround. The file is attached to the ticket: http://svn.boost.org/trac/boost/attachment/ticket/1217/value_init_MSVC_work… The workaround version stores the bytes of the T object that is wrapped by value_initialized<T> as an instance of aligned_storage::type. During the construction of value_initialized<T>, it clears the bytes of T (using memset), just before constructing T itself, by placement new: std::memset(&x, 0, sizeof(x)); new (&x) T(); The workaround is enabled by defining a macro, BOOST_UTILITY_VALUE_INIT_WORKAROUND. As I never contributed to a Boost library before, what should I do in order to get this workaround reviewed, and hopefully get it into the library? Kind regards, -- Niels Dekker http://www.xs4all.nl/~nd/dekkerware Scientific programmer at LKEB, Leiden University Medical Center

2 2

empty svn directory
by Michael Marcin 31 Aug '07

31 Aug '07

Is it possible to create a high level (probably top level) always empty directory that I can svn switch to? Switch into empty allows me to easily update and watch only the folders I care about and its a recommended practice to improve svn size and performance. http://tortoisesvn.net/node/237 Thanks, Michael Marcin

5 7

[boostbook] development as general-purpose C++ documentation tool?
by Frank Mori Hess 31 Aug '07

31 Aug '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I'm curious if anyone is working on making boostbook less boost-specific and easier to use for non-boost projects? There seems to be a niche for it, as I currently find myself using it for a non-boost library, as someone who has grown frustrated with Doxygen not quite understanding the source code correctly, and being unable to easily override its mistakes. - -- Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFG2EFW5vihyNWuA4URAv3EAJ9Up6X+JGfeQfG5zRz6Eyby30qMvACfUj5D XcZ6k1T9rMtr85N8FK8jg9Y= =3EhF -----END PGP SIGNATURE-----

3 4

[build] [docs] Can't build docs
by Andrew Sutton 31 Aug '07

31 Aug '07

Sorry, this is a repost - I forgot to specify the subject correctly. Has anybody tried building any quickbook docs lately? I updated yesterday (and again today) and found that I can't build any of the docs that I've been working on - or any of the other docs in sandbox/ doc_test. It looks like something is broken with the boostbook build instructions. This is (basically) my Jamfile. using quickbook ; xml std : std.qbk ; boostbook standalone : std : .... ; Running it, I get this: /.../boost/tools/build/v2/build/virtual-target.jam:1017: in virtual- target.register-actual-name from module virtual-target error: Duplicate name of actual target: <pbin/gcc-4.1.2/debug>std.xml error: previous virtual target { quickbook%quickbook.quickbook-to- boostbook-std.xml.XML { std.qbk.QUICKBOOK } } error: created from ./std error: another virtual target { quickbook%quickbook.quickbook-to- boostbook-std.xml.XML { std.qbk.QUICKBOOK } } error: created from ./std error: added properties: <python-debugging>off error: removed properties: none If I comment out the boostbook target, the build will actually succeed, so the problem has to be something with the boostbook - and its something that has to have changed in the last week or so.[ Anybody have any ideas? Andrew Sutton asutton(a)cs.kent.edu

3 3

Re: [boost] [statechart] Completion transitions again.
by Leandro Lucarella 31 Aug '07

31 Aug '07

Andreas Huber wrote: >> struct ev: sc::event< ev > {}; >> struct B; >> struct C; >> struct A: sc::simple_state< A, Machine > >> { >> typedef mpl::list< >> sc::completion_transition< >, >> sc::custom_reaction< ev > >> > reactions; >> sc::result react(const completion_event&) >> { >> if (guard) >> return transit(); >> return discard_event(); >> } >> sc::result react(const ev&) >> { >> if (!guard) >> return transit< C >(); >> return discard_event(); >> } >> }; > > I'm not sure how this is an improvement over the choice-point-like > class? It improves readability and removes the need for a dummy intermediate class? > Again, this limitation can be overcome easily with the same trick. > Specify a dummy outermost state as initial state and then post an event in the > entry action that will trigger a transition to the desired state. Ok, my main problem is gone. I can now express what I need with the intermediate dummy state trick. I think the improvements in this limitations are desirable but not critical, and maybe you are right and it's too much work for too little gain. Thanks for your help! -- Leandro Lucarella Integratech S.A. 4571-5252

2 1

Trac bugs - by assignee
by Marshall Clow 31 Aug '07

31 Aug '07

[ 348 open tickets today, 347 yesterday ] If you are maintaining a library, and have not logged into the trac system at <http://svn.boost.org/trac/boost/>, please do so ASAP. Until you do that, no tickets can be assigned to you, and will remain under "None". Instructions on working with tickets can be found at: <http://svn.boost.org/trac/boost/wiki/TicketWorkflow> and a mapping of user names to "real names" can be found at: <http://svn.boost.org/trac/boost/report/16> 28 djowel 27 grafik 24 doug_gregor 19 az_sw_dude 18 rogeeff 17 johnmaddock 16 ramey 16 None 15 jsiek 15 dave 12 pdimov 12 agurtovoy 11 turkanis 11 dgregor 10 vladimir_prus 8 nesotto 8 anthonyw 6 shammah 6 jbandela 6 <Blank> 5 witt 5 samuel_krempp 5 nasonov 5 bemandawes 4 urzuga 4 mark_rodgers 4 fcacciola 4 ebf 4 danielw 3 jmaurer 2 nobody 2 igaztanaga 2 hubert_holin 2 dlwalker 1 t_schwinger 1 speedsnail 1 samuel_k 1 pavol_droba 1 mumiee 1 mistevens 1 hkaiser 1 garcia 1 eric_niebler 1 asutton 1 aaron_windsor None 1222 lambda::ret<T> should declare result_type. None 1219 Add official Visual C++ 2008 (9.0) support None 1199 configure doesn't work with path containing whitespaces (MacOS X) None 1187 bcp copy not needed files None 1184 property_tree assignment (operator) bug None 1182 Specifying character-set by the guideline and the inspect program None 1166 [boostbook] paths relative to boost.root None 1116 disable some warnings in msvc build None 1094 Finding the correct library to link (feature request for pkg-config support)h None 1079 boost-1.34.0 fails to compile. concept checks not satisfied. None 1068 Mersenne twister disables streaming for Visual C++ None 1059 random_on_sphere can be made 10 times faster! None 991 [pool] None 986 Problem building Python modules on boost 1.34.0 None 982 x64 documentation for windows None 960 [random] lognormal_distribution problem <Blank> 1192 [boostbook] problem when two files have the same name <Blank> 1093 Mandatory source files shouldn't require_ or give the impression to require_ the Boost Build system <Blank> 1070 [iostreams]boost\iostreams\copy.hpp line80 copy_impl <Blank> 1033 iostreams::restrict doesn't work on an iostreams::file_source <Blank> 824 BOOST_IOSTREAMS_HAS_LSEEK64 on Mac OS X <Blank> 823 Seekable file_descriptor_source /sink? aaron_windsor 778 top-level configure is broken agurtovoy 1215 Boost 1.34.1_ mpl: Wrong workaround detection using MinGW32 (or.hpp_ line #33) agurtovoy 1122 Update regression.py to use SVN repo. agurtovoy 1099 unable to iterate through a "non-explicitly-declared" mpl::set agurtovoy 1051 MPL header ordering triggers bug agurtovoy 1049 Getting mpl/has_xxx.hpp to compile on AIX agurtovoy 1001 gcc 4.1.2 segfaults on mpl/test/apply.cpp agurtovoy 861 Detect nested template members with has_template_xxx agurtovoy 816 duplicat initial members -> erase_key postcond. fail agurtovoy 761 [mpl] evc4 port agurtovoy 640 documentation mistake agurtovoy 637 Adjusts mpl::pair concept to be compatible with STL pairs agurtovoy 588 mpl::remove compile error with gcc 4.1.0 anthonyw 1168 [thread] tss crashes randomly anthonyw 1154 tss destruction segfaults in conjunction with dlopen/dlclose anthonyw 1053 Error using boost::mutex and C++/CLI anthonyw 659 provide an abstract "Task" type based on Boost.Threads anthonyw 881 errors when build with Apache stdcxx anthonyw 876 xtime documentation incomplete anthonyw 868 [thread] thread_specific_ptr::element_type ? anthonyw 802 [thread] MSVS: Allow use of thread headers with /Za asutton 693 Add clique detection algorithms DFMax_ Bron-Kerbosch az_sw_dude 1207 Method "from_julian_day_number" (class gregorian_calendar) not documented az_sw_dude 1162 warning: ticks shadows a member of this az_sw_dude 1160 warning: month_format shadows a member of this az_sw_dude 1147 date_time library contains global #define ERROR az_sw_dude 1098 Urgent libboost-date-time1.33.1 : bugs on ia64 ? az_sw_dude 1078 from_iso_string cannot read the output from to_iso_string az_sw_dude 1028 typo in boost header: date_time/time_defs.hpp az_sw_dude 187 locale az_sw_dude 17 Socket wrapper class az_sw_dude 890 date_time library supports only the current dst rule az_sw_dude 889 Insane Dependencies az_sw_dude 827 Unused variable in format date parser az_sw_dude 642 operator<< for gregorian::date_duration not found az_sw_dude 614 new timezone db file for #1471723 - 2007 DST support az_sw_dude 605 support new 2007 DST rules for timezone db az_sw_dude 604 from_ftime incorrectly processes FILETIME filled with zeros az_sw_dude 596 make timezone csv file C/C++ compatible az_sw_dude 316 date_time type conversion warning az_sw_dude 287 wrong usage of ios_base::narrow bemandawes 1090 scoped_file class that deletes file at end of scope bemandawes 897 exists() throws exeption on existing but locked file on wind bemandawes 752 directory_iterator doesn't work with catch bemandawes 590 mkstemp bemandawes 559 linker error mingw 3.4.5 danielw 1097 keyword.hpp generates many warnings C4180: qualifier applied to function type has no meaning; ignored danielw 1054 Parameter takes an "infinite" amount of time to compile with the Intel compiler. danielw 1044 Argument pack inaccessable in a functions return type danielw 863 [parameter] fix operator|| for lazy binding dave 1181 [boost.python] can modify enum value dave 1180 [boost.python] def_readwrite need a default docstring dave 1179 [boost.python] can not export a union in VC2005sp1 dave 1096 Tutorial needs updating for BBv2 dave 1085 Python rules for compiling in Mac OS X dave 1066 Patch to make Boost.Python compile on SunCC dave 1020 Boost.Iterator proposal to add is_constant_iterator dave 1019 iterator_facade::pointer should be the return type of operator-> (DR 445) dave 1010 linking boost.python on freebsd dave 918 __doc__ strings dave 916 BPL Support for Python Callable Objects dave 910 gcc strict-aliasing problems with python dave 903 inconsistent usage of function pointer typedefs dave 865 Use of C++0x keyword as identifier dave 857 add shared_ptr< const T> support dgregor 1218 Boostbook error when generating documentation for a member typedef with a description dgregor 1185 iostreams::direct_streambuf<T_Tr>::is_open always returns false if output iterator is not null dgregor 1164 Floyd Warshall broken with unsigned edge weights dgregor 1149 Minor doc error in basic_null_device dgregor 1140 boost::iostreams linked_streambuf bug dgregor 1139 [iostreams] Regex filter segfaults when zero matches found dgregor 1124 ./configure failed on cygwin dgregor 1011 amd64: #error Boost.Numeric.Interval: Please specify rounding control mechanism. dgregor 1003 [iostreams] copy-paste error in typedefs for wchar multichar_filters dgregor 1002 [iostreams] close_impl<closable_tag> does not comply with spec dgregor 556 Bundled graph properties djowel 1221 Section names may cause html names to be too long djowel 1214 Provide an error count from a bjam Quickbook build djowel 1213 Specify that [#named_anchors] are global djowel 1208 gcc initialization order warnings djowel 1206 Escaping from within code? djowel 1205 Quickbook getting started djowel 1204 Non-breaking-space? djowel 1202 Add a [teletype] source mode djowel 1200 Revamp the header information djowel 1194 Add ID to table to allow linking to tables easily djowel 1193 Nestable tables and lists and exlicit paragraph markup djowel 1190 Markups inside simple markups djowel 1189 Scoped Macros djowel 1176 Space after inline code djowel 1175 What is punctuation? djowel 1174 Simplified template arg handling djowel 1173 Balanced comments djowel 1172 non-utf djowel 1171 Quickbook title output djowel 1170 Emit Warnings instead of # symbols in the syntax highlighter djowel 1159 bibliography support djowel 1158 optional named parameters djowel 1157 On Images djowel 1156 feature request: linkid to the whole document djowel 664 crash in boost::spirit::parse djowel 543 Embedded python won't compile djowel 314 spirit insert_key_actor.hpp djowel 241 Miss " = ParserT()" dlwalker 653 [integer] add support for integers longer than long dlwalker 613 boost/crc.hpp uses non-standard conforming syntax doug_gregor 1087 Mismatch between BBv2 and bjam toolsets in configure script. doug_gregor 1076 compile error: disconnecting struct with operator()() doesn't work in VS2005 SP1 doug_gregor 1067 Function needs to use pass-by-reference internally doug_gregor 1021 [Graph][reverse_graph] Problem using reverse_graph adapter with an adapted user defined graph doug_gregor 954 boost::dynamic_properties has no copy-constructor doug_gregor 891 Bunch of compilation error reported while using function.hpp doug_gregor 870 boost::graph::graph_utility.hpp is_connected() bad call doug_gregor 862 [utility] Make result_of handle lambda expressions doug_gregor 852 Problem with Boost and GCC 4.1 doug_gregor 829 Implicit graph not implement doug_gregor 746 max flow with lower bounds (capacities) doug_gregor 738 Memory leaks with signal::connect? doug_gregor 736 Const correctness violation doug_gregor 735 Fruchterman-Reingold grid performance can be improved doug_gregor 733 Numbered headers don't work with "preferred" syntax doug_gregor 732 Johnson All-Pairs needs better "no path" information doug_gregor 708 Dijkstra no_init version should not require VertexListGraph doug_gregor 447 reverse_graph and constness of property maps doug_gregor 403 Document copy_component doug_gregor 402 random_vertex/random_edge are unnecessarily inefficient doug_gregor 395 BGL graph types do not support allocators doug_gregor 375 LEDA graph adaptors do not handle hidden nodes properly doug_gregor 373 LEDA graph adaptors for undirected graphs doug_gregor 372 adjacency_matrix should model BidirectionalGraph ebf 1112 reference_wrapper<T> should convert to reference_wrapper when T& is convertible to U& ebf 993 Variant should use least common multiple of alignments_ rather than maximum ebf 965 [doc] boost::variant tutorial - final example uses v1_v2 should be seq1_seq2 ebf 547 [variant] Compile time checked getter eric_niebler 1071 Request for BOOST_REVERSE_FOREACH and rationale fcacciola 1217 value_initialized leaves data uninitialized_ when using MSVC fcacciola 282 boost::optional<enum> fails with /CLR fcacciola 818 No zero-argument in_place() fcacciola 617 Numeric Conversion Documentation minor bug garcia 1045 [multi_array] Need a proper swap operation grafik 1203 Decouple the backend grafik 1146 KAI Referenced in compiler status acknowledgements grafik 1135 bjam crashes grafik 1128 boost-buil rule does not overrule BOOST_BUILD_PATH grafik 1088 Docs for template escape feature. grafik 1074 FreeBSD specific patches to boost 1.34.0 grafik 1041 Cygwin requires PATH setting. grafik 1040 boost.devel archive at ActiveState disconnected grafik 1031 AmigaOS fixes for bjam grafik 1023 inspect grafik 989 Boost build does not support building universal binaries on macintosh grafik 714 [jam] HardLink rule on NT platform grafik 94 Better reporting of failed expectation. grafik 93 Testing problems on AIX and OSF grafik 1062 Cygwin install stage fails with combination of patches grafik 977 bjam crashes when compiled with gcc 4.2 grafik 959 linking fails when Boost is compiled with STLport 5.1.* on Linux (names mismatch) grafik 896 <native-wchar_t>off does not work when build with vc-8.0 grafik 798 bjam: always define OSPLAT grafik 721 Generated files "@()" don't work in regular expressions. grafik 683 libraries won't build grafik 616 Boost Jam_ and non english directorys grafik 552 Building universal binary on MacOSX grafik 546 boost.build needs fixes for HP/UX grafik 497 Unable to build boost with Dinkumware STL version 4.02 grafik 481 Linker Problems with VC .NET 2003 / STLPort / Boost grafik 431 boost jam problem with parallel builds hkaiser 1077 Spirit integer parser does not always detect integer overflow hubert_holin 647 octonion documentation bug hubert_holin 162 Cannot compile octonion_test.cpp because of bug in sinc.hpp igaztanaga 1210 interprocess::barrier hangs during second use under linux (boost 1.33.1) igaztanaga 1080 boost::interprocess win32 global file mapping issue jbandela 665 bug in char_separator jbandela 501 token_iterator::at_end() result is inversed jbandela 306 Visual C++ "Language Extensions" support jbandela 283 Compiler error for tokenizer on Solaris jbandela 279 SLOOOWW tokenizer compilation on VC++6.0 jbandela 259 Problem compiling :/ jmaurer 920 Proposed extension to random library jmaurer 819 uniform_int<> with type's maximum availaible range error jmaurer 351 Diff in state of mersenne_twister gen between GCC3.41 & CW9 johnmaddock 1216 problems compiling template class using is_class and is_arithmetic johnmaddock 1178 Regular expression min match length johnmaddock 1130 GCC -wundef warnings johnmaddock 1083 boost_regex 1.34.0 uses ICU library without linking to it johnmaddock 1081 Empty string rejected as perl-style regex johnmaddock 1008 Undocumented type traits. johnmaddock 1148 boost_1_34_1 regex library compile failure on aix with xlv johnmaddock 1105 Add BOOST_NO_STD_TYPEINFO or inject ::type_info into std johnmaddock 1104 Add BOOST_NO_TYPEID johnmaddock 1103 Add BOOST_NO_IOSFWD johnmaddock 1102 Add BOOST_NO_IOSTREAM johnmaddock 883 errors when build with Apache stdcxx johnmaddock 764 [regex] add support for a BOOST_NO_CREGEX mode johnmaddock 633 [config] evc4 port johnmaddock 591 make portable stdint.h from boost code johnmaddock 502 Problem running configure for unsupported platform johnmaddock 492 Adding boost::is_complex to type_traits.hpp jsiek 905 Assertion failed in token_iterator.hpp jsiek 315 Implement operator[] for Tokenizer jsiek 900 graphml reader namespace handling is broken jsiek 875 No iterator based constructor for adjacency_matrix jsiek 815 remove_edge core dumps on self-circle jsiek 813 concept_check.hpp unused variable warning jsiek 694 Add Maximum Common Subgraph (MCS) algorithm jsiek 636 strange compiling problem for transitive_closure jsiek 580 Max Flow Algorithm jsiek 575 Calling subgraph::global_to_local on a root graph jsiek 541 [concept_check.hpp] remove unused variable warning in msvc jsiek 416 Spelling of Edmonds-Karp-Algorithm jsiek 193 Check ordering for mutexes jsiek 182 Support aspect-orientation jsiek 100 more use of the concept "allocator" mark_rodgers 821 allow_unregistered improvement mark_rodgers 558 add database library? mark_rodgers 87 function to get the size of a array mark_rodgers 30 parser mistevens 688 ublas: bug in mapped_vector_of_mapped_vector mumiee 1201 Regexify the syntax highlighter nasonov 922 Lexical cast and wide characters nasonov 913 Specialization of lexical_cast nasonov 754 boost::any - typeid comparison across shared boundaries nasonov 1220 lexical_cast requires RTTI nasonov 839 lexical_cast - local variable shadow patch nesotto 1151 [range] make_indirect_range() nesotto 1145 Small bugs in Boost.Range documentation nesotto 1027 [ptr_container] optional serialization support nesotto 807 boost::assignment documentation: mathematical "typo" nesotto 730 The ptr_map iterator cannot be dereference to value type nesotto 518 [Boost.Range]boost::const_begin calls non-qualified 'begin' nesotto 471 boost.range and "const char[]". nesotto 723 local_time_facet error in VS2005 Win2003 nobody 884 [iostreams] workaround for the boost + stdcxx on MSVC 7.1 nobody 795 [ublas] vector::back() pavol_droba 1152 rle_example fails pdimov 1114 Request for shared_ptr::type and shared_ptr::pointer pdimov 1113 shared_array<T> should convert to shared_array<T const> pdimov 1111 boost::bind objects should expose function_type and list_type pdimov 1110 Add a release method to scoped_array pdimov 1109 intrusive_ptr needs a helper base class pdimov 1108 shared_ptr does not compile under g++ with -fno-rtti pdimov 1107 Add weak_use_count to weak_ptr as a debugging aid pdimov 1106 shared_ptr<T> should not convert to shared_ptr when T* doesn't convert to U* pdimov 997 error in boost::bind doc pdimov 810 support for weak_ptr binding pdimov 445 Can't delete automatically in circularly included object. pdimov 398 Support for embedded VC++ 4.0 ramey 1223 boost::serialization chokes on correcly formatted empty XML element ramey 1143 Archive headers appear to be missing multiple(?) include files ramey 1142 boost/serialization/optional doesn't include necessary header ramey 1141 Dangerious operator<< for wostream ramey 1137 Virtual destructor is missing ramey 1121 xml_archive_exception is missing seperate header file_ and documentation mismatch ramey 1089 missing boost::serialization::make_nvp in pointer container library ramey 1086 Serialization of weak_ptr produces invalid XML ramey 1038 "<" and ">" should be excaped in xml_oarchive ramey 1036 assert failure in oserializer.hpp:418 ramey 969 basic_binary_iprimitive::load_binary bug ramey 968 xml_grammar - incorrect define char ramey 961 boost::basic_binary_oprimitive not instantiated correctly ramey 874 Ability to partially specialize implementation_level ramey 757 xml serialization fails when using namespace ramey 878 error C2039: 'mbstate_t' : is not a member of 'std' rogeeff 1212 Template fixtures rogeeff 1169 errors in tutorial for test framework "new_year_resolution" rogeeff 1136 Let BOOST_CHECK_EQUAL support std::wstring rogeeff 1060 no example sources in online docs for Boost::Test rogeeff 1050 BOOST_CHECK_CLOSE_FRACTION documentation missing rogeeff 1032 typo in Boost.Test documentation rogeeff 1030 execution_monitor.ipp #warning directive breaks compilation on MSVC 8.0 rogeeff 999 prg_exec_fail3 fails on release variant rogeeff 998 prg_exec_fail2 fail on ppc rogeeff 962 Missing links in Test library documentation rogeeff 956 Doc error in test examples. rogeeff 842 typo in auto_unit_test.hpp Revision 1.17 rogeeff 607 Log level names wrong in documentation rogeeff 893 grammatical error in error message rogeeff 847 [Test Library] How to init/free a singleton rogeeff 762 [test] evc4 issue with SEH support rogeeff 747 failing on 6 targets in MacOS X rogeeff 645 [test] no eh exception handling functions on evc4 samuel_k 585 64 bit compile warning/error for boost::format samuel_krempp 1196 Patch: when BOOST_NO_STD_LOCALE is not defined_ boost/format/internals.hpp fails to compile. samuel_krempp 1195 patch: boost/format/parsing.hpp does not compile if BOOST_NO_LOCALE_ISDIGIT is defined samuel_krempp 859 boost::format ignores a user defined locale samuel_krempp 980 boost.format vc8/win32 compilation warning samuel_krempp 704 format zero length string msvc-8 shammah 840 pool allocator - local variable shadow patch shammah 836 warning using pool.hpp shammah 386 boost::pool_allocator breaks with vector of vectors shammah 290 perfomance: memory cleanup for pool takes too long shammah 284 pool::purge_memory() does not reset next_size shammah 88 ct_gcd_lcm.hpp compilation error speedsnail 1138 Problems with TSS and static thread library t_schwinger 1100 Building boost.function_types fails cvs rev-1.1_ no chdir command in bash turkanis 869 [iostreams] patch for building by BBv2 turkanis 856 iostreams file_descriptor::write fails under Win32 turkanis 822 Incorrect usage of bad_write()_ bad_seek() etc. turkanis 817 Performance problem in iostreams turkanis 791 iostreams::tee_filter is for output only turkanis 786 bug in iostreams/copy.hpp line 81 turkanis 699 Changing size of memory-mapped file on Windows turkanis 586 iostreams // file_descriptor::seek BUG on files > 4 GB turkanis 579 boost.iostreams file_descriptor and sharing turkanis 525 problem with boost::iostreams when compiled with Visual C++ turkanis 484 Boost.Iostreams and newline translation urzuga 864 [lambda][utility] Make lambda support result<> urzuga 781 Lambda: (_1 + "y")(string("x")) Doesn't Compile urzuga 574 [boost::lambda] Compile error with libstdc++ debug mode urzuga 426 lambda vs pure virtual functions vladimir_prus 1177 Various bugs in STLport jamfile vladimir_prus 1165 more quoting problems vladimir_prus 1132 program_options documentation error. vladimir_prus 1129 Standalone doc_ outdated path from homepage vladimir_prus 1058 Cygwin libraries & GNU libtool vladimir_prus 985 Free features don't work when building boost vladimir_prus 850 program_options strips off escaped quotes in some situations vladimir_prus 689 [program_options] Endless loop with long default arguments vladimir_prus 674 find-library for boost decorated names vladimir_prus 469 multitoken broken witt 1046 Boost.Python quickstart instructions mention nonexistent target witt 973 zip_iterator has value_type == reference witt 957 The "Getting Started" page does not mention the stdlib option witt 834 Homepage regression links witt 145 filter iterator adaptor should be able to be bidirectional -- -- Marshall Marshall Clow Qualcomm, Inc. <mailto:mclow@qualcomm.com> The famous British scientist, Lord Kelvin, said: "When you measure what you are speaking about and express it in numbers, you know something about it, but when you cannot (or do not) measure it, when you cannot (or do not) express it in numbers, then your knowledge is of a meagre and unsatisfactory kind."

1 0

How do I run the tests for a specific library using bjam?
by eg 31 Aug '07

31 Aug '07

I notice that all the boost libraries have tests associated with them, which can be invoked by bjam somehow. Can someone tell me how to invoke bjam to run a specific test for a given (single) library, or run the whole suite of tests for the single library? As opposed to running all tests for all libraries. Alternatively, if you could point me to some docs which describe it, I can take it from there. (I did some searching but have struck out so far). Thanks

4 3

tools/release/user-config.jam
by Vladimir Prus 31 Aug '07

31 Aug '07

There's tools/release/user-config.jam file, that contains some boostbook declarations that can only work on somebody's system. Users are confusing that file with tools/build/v2/user-config.jam. Anybody can explain why we need tools/release/user-config.jam? Assuming nobody will stand up and tell it's really needed within a week, I'll just delete it. - Volodya

1 0

[constrained-value] zero-overhead
by Neal Becker 31 Aug '07

31 Aug '07

One more wish/requirement for cv. Maybe this is already met? I haven't checked. I want to be able to select a policy that does nothing, and on (reasonably modern compilers) achieve performance comparable to the underlying (int) type. That is, I want to use this like logging - where I can switch it off at compile time and make the overhead negligible.

4 5

[Boost.Build] installation problem
by david shaw 31 Aug '07

31 Aug '07

Hi, I go there http://www.boost.org/doc/html/jam/building.html I do: C:\Documents and Settings\src\boost\tools\jam\src>build mingw --debug (like explained) A new folder named bin.ntx86.debug is added after I go there http://www.boost.org/doc/html/bbv2/installation.html 1:(done) 2: I do: C:\Documents and Settings\src\boost\tools\build\v2> bjam --version Instead of seing: Boost.Build V2 (Milestone 11)Boost.Jam 03.1.14 I see: syntax error at EOF Boost.Build V2 (Milestone 11)Boost.Jam 03.1.14 3: I open the user-config.jam file (like explained) and I modify the file, the modification is the following: import toolset : using gcc ; # GCC configuration # Configure gcc (default version) using gcc : : "C:\mingw\bin\g++"; 4: I copy bjam.exe from C:\Documents and Settings\src\boost\tools\build\v2 to C:\Documents and Settings\src\boost\tools\build\v2\example\hello and I run bjam (like explained): C:\Documents and Settings\src\boost\tools\build\v2\example\hello>bjam then I see: "syntax error at EOF No toolsets are configured ..." What is my error? David _________________________________________________________________ Retrouvez tous les services Windows Live sur votre mobile ! http://mobile.live.fr/

3 4

[graph] planar: face traversal and connected issues
by Jens Müller 31 Aug '07

31 Aug '07

I am porting LEDA code to BGL, including code dealing with planar graphs. I have code like this: e2 = G.face_cycle_succ(e1); LEDA documentation says "For an edge e of a map G let face_cycle_succ(e) = cyclic_adj_pred(reversal(e))" I suppose there currently isn't any direct support for such an operation? As far as I understand, I would have to get the embedding[target(e,g)] and then look for e there, and take the predecessor of e, right? I suppose in an undirected graph edges and their "reversal" (i.e., the edge descriptor you get when you get the edge from the other end) are equal? I think directly supporting this would be a nice addition. Furthermore, I think LEDA can do this in O(1), which we cannot. Well, amortized it should be something like O(1), no? The only solution to this problem would probably be storing the embedding in the graph object. Another issue I have is adding an edge to a planar graph while preserving the embedding. E.g., in LEDA, I have code like this: newEdges.append(x = G.new_edge(e3,v)); newEdges.append(e1 = G.new_edge(e1,w)); G.set_reversal(x, e1); From the LEDA docs: "edge G.new_edge(edge e, node w, int dir=leda::behind) adds a new edge x = (source(e), w) to G. x is inserted in front of (dir=leda::before) or behind (dir=leda::behind) edge e into adj$ \_$edges(source(e)) and appended to in$ \_$edges(w) (if G is directed) or adj$ \_$edges(w) (if G is undirected). Here leda::before and leda::behind are predefined constants. The operation returns the new edge x. Precondition source(e)! = w if G is undirected." It seems to me that there is only one adjacent edges list for a vertex, that represents the planar embedding if it has been correctly computed and not invalidated. Well, what I want to say: Functions that can add edges to an embedding would be really cool. Of course, it would be the user's obligation not to invalidate the embedding. Cheers, Jens

3 5

[docs]
by Andrew Sutton 31 Aug '07

31 Aug '07

Has anybody tried building any quickbook docs lately? I updated yesterday (and again today) and found that I can't build any of the docs that I've been working on - or any of the other docs in sandbox/ doc_test. It looks like something is broken with the boostbook build instructions. This is (basically) my Jamfile. using quickbook ; xml std : std.qbk ; boostbook standalone : std : .... ; Running it, I get this: /.../boost/tools/build/v2/build/virtual-target.jam:1017: in virtual- target.register-actual-name from module virtual-target error: Duplicate name of actual target: <pbin/gcc-4.1.2/debug>std.xml error: previous virtual target { quickbook%quickbook.quickbook-to- boostbook-std.xml.XML { std.qbk.QUICKBOOK } } error: created from ./std error: another virtual target { quickbook%quickbook.quickbook-to- boostbook-std.xml.XML { std.qbk.QUICKBOOK } } error: created from ./std error: added properties: <python-debugging>off error: removed properties: none If I comment out the boostbook target, the build will actually succeed, so the problem has to be something with the boostbook - and its something that has to have changed in the last week or so.[ Anybody have any ideas? Andrew Sutton asutton(a)cs.kent.edu

1 0

[Config?] Cannot download 1.34.1, possibly due to "bug" in file type
by Peter Bartlett 31 Aug '07

31 Aug '07

Hi, I just tried to download the 1.34.1 zip from Sourceforge from my behind my corporate firewall. That firewall is of the extremely zealous type and as part of its virus scan of zip files it checks that the "content of the file matches the content type". This check fails for at least one file in the boost archive, and this has the effect that I am prevented from downloading any of the zip file. Here is all the information I have about the failure: > The transferred file > >"http://mesh.dl.sourceforge.net/sourceforge/boost/boost_1_34_1.zip/boost_1_3…" >has been blocked by Webwasher, because the content of the file does not match the >content type "application/x-sh" and Webwasher can not correct > it. In my view there is a bug somewhere along the line (boost sources, sourceforge, my corporation's firewall software/policies) so I am posting this message here in case boost developers can help. Pete

2 2

Can SFINAE be used for testing some trait classes?
by Daryle Walker 31 Aug '07

31 Aug '07

We have some class templates in forms like: //========================================================== template <unsigned X> struct my_test; template <> struct my_test<0u> {}; template <unsigned X> struct my_test { typedef my_test<(X - 1u)> type; }; //========================================================== IOW, the traits express their result as a type, but omit the type for out-of-domain values. I was looking at the enable_if documentation and I was wondering if we can use SFINAE to create functions and/or function templates that will test manifestations of "my_test," but skip the test for out-of-domain values without have to explicitly exclude the values. Here, it's easy to omit "0" from the test file, but for some templates it won't be so obvious which values to exclude. (Worse, the omitted values may change between platforms!) For example, could something like //========================================================== template < unsigned X > typename my_test<X>::type print_out( my_test<X> const &x ) { std::cout << "There's a specialization at " << x << '.' << std::endl; return my_test<X>::type(); } template < typename T > void print_out( T const &x ) { std::cout << "There's no 'type' here." << std::endl; } //========================================================== with some sort of compile-time list (maybe with MPL) that runs each version of "my_test" through the best version of "print_out" be made? (This is all for replacing the macros in "integer_test.cpp" with something more up-to-date.) -- Daryle Walker Mac, Internet, and Video Game Junkie darylew AT hotmail DOT com

3 2

[thread_safe_signals] connection without block/unblock?
by Oliver.Kowalke＠qimonda.com 31 Aug '07

31 Aug '07

Hello, The thread safe signals library contains connection class without block/unblock memebr function (but connection::blocked is available). Is it planed to add this feature - or what is the status of this lib? Regards, Oliver

2 3

Re: [boost] [statechart] Completion transitions again.
by Leandro Lucarella 30 Aug '07

30 Aug '07

> Hi Leandro Hi >> I saw your email[1] via the gmane web interface (did you Cc me? > > Not exactly, I forwarded the message: > > To: llucarella_at_[hidden] > Message-ID: <37229.1564.qm_at_[hidden]> > >> maybe >> you mail was eaten by my antispam =). > > Probably... It was a problem with my ISP, if it's not much trouble, please Cc/forward me to luca at integratech dyndns org. Thanks! >> I don't really know how to handle "partial" completion transitions (I >> mean, with guards). But simple completion transitions could be expressed >> something like: >> >> struct B; >> struct A: sc::simple_state< A, Machine > >> { >> typedef sc::completion_transition reactions; >> }; >> >> I guess is better to have partial support than no support at all =) > > It seems what you want to do with completion transitions can easily be > achieved by posting an event in the entry action of a state? That is, the only additional work you'd have to do in comparison to a library supported scenario is to derive from state instead of simple_state and post an event in the ctor? A state that automatically posts an event in its entry action is useful in other scenarios, please see Dynamic choice points under: > <http://www.boost.org/libs/statechart/doc/rationale.html#Limitations> Yes, I know I could do that, but I have to create a dummy event and it looks like a little dirty to me. > I'm considering to add such a class. I'll have to think about the naming and the exact interface though. Great! What about the other idea? I'm sorry about the lame format, my MUA was messing my ASCII-art =P. Here it is again, I hope this time is more readable: struct ev: sc::event< ev > {}; struct B; struct C; struct A: sc::simple_state< A, Machine > { typedef mpl::list< sc::completion_transition< >, sc::custom_reaction< ev > > reactions; sc::result react(const completion_event&) { if (guard) return transit(); return discard_event(); } sc::result react(const ev&) { if (!guard) return transit< C >(); return discard_event(); } }; >> Another simple question about statechart: it can handle this? >> >> ,-----------------. >> | S |<--- T >> | | >> o--+--> A --> B <--o | >> | | >> `-----------------´ Same here. What I wanted to show was: ,-------------------. z | S |<--- T w | x y | o---+--> A ---> B <---o | | | `-------------------´ >> I want the state machine to start at A, but any other time S is entered, >> I want to start at B. AFAIK this is possible in UML. > > Really? A pointer would be appreciated. Well, it's not exactly the same but in the presentation[1] linked from boost.statechart web page is an example (page 6). In the example is not the initial pseudostate which goes to the inner state. >> Can I express that >> in boost.statechart? > > Not directly, again you could find out which state you want to enter in a > initial helper state entry action and then post an appropriate event. Ok, again this is not very pretty, but I didn't figured this out for this case, I've tried it and it worked, so thanks :) >> I think I hit an static assertion when trying to do >> that (/usr/include/boost/statechart/simple_state.hpp:885: error: invalid >> application of ‘sizeof’ to incomplete type >> ‘boost::STATIC_ASSERTION_FAILURE<false>’). > > You passed mpl::list filled with multiple initial states? If so, then you > tried to create a state with multiple orthogonal regions: > > <http://www.boost.org/libs/statechart/doc/tutorial.html#OrthogonalStates> No, I wasn't using orthogonal regions. I tried to reproduce the error in a smaller example but I couldn't. I attach the example anyways because I hit another error. I'll try to reproduce the previous problem and post it later. TIA -- Leandro Lucarella Integratech S.A. 4571-5252

2 1

Re: [boost] [Interprocess] barrier_test hanging on Apple PowerPC
by atack2＠uiuc.edu 30 Aug '07

30 Aug '07

I remember fixing another PPC atomics.hpp issue a while ago, I'll look at it tonight. Where can I read about running the tests? I've not played with that before. -- Tack ---- Original message ---- >Date: Tue, 21 Aug 2007 21:33:30 +0200 >From: Ion Gaztañaga <igaztanaga(a)gmail.com> >Subject: Re: [boost] [Interprocess] barrier_test hanging on Apple PowerPC >To: "boost(a)lists.boost.org" <boost(a)lists.boost.org> > >Doug Gregor wrote: >> The problem only seems to occur on PowerPC Mac, because the test is >> running fine on my Intel Mac. There's a gdb dump of the backtraces >> for all running threads below. > >Removed from SVN. > >The main problem is that Mac does not have process-shared >barrier/mutexes/condition variables and an emulation using spinlocks is >used. Since my knowledge about atomic operations is *zero* my >implementation of interprocess_condition might be wrong or just the >atomic operations I'm using are not correctly implemented. > >I guess I should ask Boost thread-experts (Boost.Thread maintainers >willing to help?) to write these synchronization primitives for me >or/and beg for a simple atomic operation package in Boost. At least some >that implement increment, cas, decrement, atomic read and read (full >barrier semantics are enough for me, I just don't understand what >acquire and release are ;-) ). > >The implementation of the emulated barrier is pretty simple: > >inline barrier::barrier(unsigned int count) > : m_threshold(count), m_count(count), m_generation(0) >{ > if (count == 0) > throw std::invalid_argument("count cannot be zero."); >} > >inline bool barrier::wait() >{ > scoped_lock<interprocess_mutex> lock(m_mutex); > unsigned int gen = m_generation; > > if (--m_count == 0){ > m_generation++; > m_count = m_threshold; > m_cond.notify_all(); > return true; > } > > while (gen == m_generation){ > m_cond.wait(lock); > } > return false; >} > >so I guess there is problem with my emulated condition implementation or >with atomic operations (which are taken from apache run-time library). > >Regards, > >Ion >_______________________________________________ >Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/ boost

4 3

Re: [boost] [Interprocess] barrier_test hanging on Apple PowerPC
by atack2＠uiuc.edu 30 Aug '07

30 Aug '07

I played with it a while, and traced it down to behavior of interprocess_condition, I think. I hope I have the correct idea for barrier... Expected behavior: N threads wait on the barrier, at which point, the barrier lets all N threads continue (exiting wait()). One of these threads is indicated as the "leader", by a unique-in-n return value of True. Eh? Actual Behavior: For an interprocess_barrier(n), when the nth thread waits on the barrier, only one thread is successfully released as the "leader." The others are all blocked before exiting interprocess_barrier::wait(), and (by some mutex condition I don't completely understand) they block the leader from re-entering. Deadlock. So I don't have a solution, but I know where the problem is. If you look at all the threads running during the deadlock, the "leader" is trying to get past the m_entry_lock code at the top of interprocess_condition::do_timed_wait(), and the rest are locked on the external_lock.lock() call at the very bottom of the same function. The likelihood I get to this before the weekend is zero, so if someone wants to look at the implementation of interprocess_condition, that would be the place to go. Else I'll try a fix on Saturday. -- Tack ---- Original message ---- >Date: Thu, 30 Aug 2007 11:42:26 -0400 >From: "Jaime Rios" <xdev74(a)gmail.com> >Subject: Re: [boost] [Interprocess] barrier_test hanging on Apple PowerPC >To: boost(a)lists.boost.org > >Has this issue been resolved? I don't see any activity on this issue and the >threading issue is appearing on PowerPC projects. > > >-- >-Jaime >http://www.jaimerios.com >_______________________________________________ >Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/ boost

1 0

Trac bugs - by assignee
by Marshall Clow 30 Aug '07

30 Aug '07

[ 347 open tickets today, 353 yesterday - Moving downward! ] If you are maintaining a library, and have not logged into the trac system at <http://svn.boost.org/trac/boost/>, please do so ASAP. Until you do that, no tickets can be assigned to you, and will remain under "None". Instructions on working with tickets can be found at: <http://svn.boost.org/trac/boost/wiki/TicketWorkflow> and a mapping of user names to "real names" can be found at: <http://svn.boost.org/trac/boost/report/16> 28 djowel 27 grafik 24 doug_gregor 19 az_sw_dude 18 rogeeff 17 johnmaddock 15 ramey 15 jsiek 15 dave 15 None 12 pdimov 12 agurtovoy 11 turkanis 11 dgregor 10 vladimir_prus 8 nesotto 8 anthonyw 6 shammah 6 jbandela 6 <Blank> 5 witt 5 samuel_krempp 5 nasonov 5 bemandawes 4 urzuga 4 mark_rodgers 4 fcacciola 4 ebf 4 danielw 3 jmaurer 2 nobody 2 igaztanaga 2 hubert_holin 2 eric_niebler 2 dlwalker 1 t_schwinger 1 speedsnail 1 samuel_k 1 pavol_droba 1 mumiee 1 mistevens 1 hkaiser 1 garcia 1 asutton 1 aaron_windsor None 1219 Add official Visual C++ 2008 (9.0) support None 1199 configure doesn't work with path containing whitespaces (MacOS X) None 1187 bcp copy not needed files None 1184 property_tree assignment (operator) bug None 1182 Specifying character-set by the guideline and the inspect program None 1166 [boostbook] paths relative to boost.root None 1116 disable some warnings in msvc build None 1094 Finding the correct library to link (feature request for pkg-config support)h None 1079 boost-1.34.0 fails to compile. concept checks not satisfied. None 1068 Mersenne twister disables streaming for Visual C++ None 1059 random_on_sphere can be made 10 times faster! None 991 [pool] None 986 Problem building Python modules on boost 1.34.0 None 982 x64 documentation for windows None 960 [random] lognormal_distribution problem <Blank> 1192 [boostbook] problem when two files have the same name <Blank> 1093 Mandatory source files shouldn't require_ or give the impression to require_ the Boost Build system <Blank> 1070 [iostreams]boost\iostreams\copy.hpp line80 copy_impl <Blank> 1033 iostreams::restrict doesn't work on an iostreams::file_source <Blank> 824 BOOST_IOSTREAMS_HAS_LSEEK64 on Mac OS X <Blank> 823 Seekable file_descriptor_source /sink? aaron_windsor 778 top-level configure is broken agurtovoy 1215 Boost 1.34.1_ mpl: Wrong workaround detection using MinGW32 (or.hpp_ line #33) agurtovoy 1122 Update regression.py to use SVN repo. agurtovoy 1099 unable to iterate through a "non-explicitly-declared" mpl::set agurtovoy 1051 MPL header ordering triggers bug agurtovoy 1049 Getting mpl/has_xxx.hpp to compile on AIX agurtovoy 1001 gcc 4.1.2 segfaults on mpl/test/apply.cpp agurtovoy 861 Detect nested template members with has_template_xxx agurtovoy 816 duplicat initial members -> erase_key postcond. fail agurtovoy 761 [mpl] evc4 port agurtovoy 640 documentation mistake agurtovoy 637 Adjusts mpl::pair concept to be compatible with STL pairs agurtovoy 588 mpl::remove compile error with gcc 4.1.0 anthonyw 1168 [thread] tss crashes randomly anthonyw 1154 tss destruction segfaults in conjunction with dlopen/dlclose anthonyw 1053 Error using boost::mutex and C++/CLI anthonyw 659 provide an abstract "Task" type based on Boost.Threads anthonyw 881 errors when build with Apache stdcxx anthonyw 876 xtime documentation incomplete anthonyw 868 [thread] thread_specific_ptr::element_type ? anthonyw 802 [thread] MSVS: Allow use of thread headers with /Za asutton 693 Add clique detection algorithms DFMax_ Bron-Kerbosch az_sw_dude 1207 Method "from_julian_day_number" (class gregorian_calendar) not documented az_sw_dude 1162 warning: ticks shadows a member of this az_sw_dude 1160 warning: month_format shadows a member of this az_sw_dude 1147 date_time library contains global #define ERROR az_sw_dude 1098 Urgent libboost-date-time1.33.1 : bugs on ia64 ? az_sw_dude 1078 from_iso_string cannot read the output from to_iso_string az_sw_dude 1028 typo in boost header: date_time/time_defs.hpp az_sw_dude 187 locale az_sw_dude 17 Socket wrapper class az_sw_dude 890 date_time library supports only the current dst rule az_sw_dude 889 Insane Dependencies az_sw_dude 827 Unused variable in format date parser az_sw_dude 642 operator<< for gregorian::date_duration not found az_sw_dude 614 new timezone db file for #1471723 - 2007 DST support az_sw_dude 605 support new 2007 DST rules for timezone db az_sw_dude 604 from_ftime incorrectly processes FILETIME filled with zeros az_sw_dude 596 make timezone csv file C/C++ compatible az_sw_dude 316 date_time type conversion warning az_sw_dude 287 wrong usage of ios_base::narrow bemandawes 1090 scoped_file class that deletes file at end of scope bemandawes 897 exists() throws exeption on existing but locked file on wind bemandawes 752 directory_iterator doesn't work with catch bemandawes 590 mkstemp bemandawes 559 linker error mingw 3.4.5 danielw 1097 keyword.hpp generates many warnings C4180: qualifier applied to function type has no meaning; ignored danielw 1054 Parameter takes an "infinite" amount of time to compile with the Intel compiler. danielw 1044 Argument pack inaccessable in a functions return type danielw 863 [parameter] fix operator|| for lazy binding dave 1181 [boost.python] can modify enum value dave 1180 [boost.python] def_readwrite need a default docstring dave 1179 [boost.python] can not export a union in VC2005sp1 dave 1096 Tutorial needs updating for BBv2 dave 1085 Python rules for compiling in Mac OS X dave 1066 Patch to make Boost.Python compile on SunCC dave 1020 Boost.Iterator proposal to add is_constant_iterator dave 1019 iterator_facade::pointer should be the return type of operator-> (DR 445) dave 1010 linking boost.python on freebsd dave 918 __doc__ strings dave 916 BPL Support for Python Callable Objects dave 910 gcc strict-aliasing problems with python dave 903 inconsistent usage of function pointer typedefs dave 865 Use of C++0x keyword as identifier dave 857 add shared_ptr< const T> support dgregor 1218 Boostbook error when generating documentation for a member typedef with a description dgregor 1185 iostreams::direct_streambuf<T_Tr>::is_open always returns false if output iterator is not null dgregor 1164 Floyd Warshall broken with unsigned edge weights dgregor 1149 Minor doc error in basic_null_device dgregor 1140 boost::iostreams linked_streambuf bug dgregor 1139 [iostreams] Regex filter segfaults when zero matches found dgregor 1124 ./configure failed on cygwin dgregor 1011 amd64: #error Boost.Numeric.Interval: Please specify rounding control mechanism. dgregor 1003 [iostreams] copy-paste error in typedefs for wchar multichar_filters dgregor 1002 [iostreams] close_impl<closable_tag> does not comply with spec dgregor 556 Bundled graph properties djowel 1221 Section names may cause html names to be too long djowel 1214 Provide an error count from a bjam Quickbook build djowel 1213 Specify that [#named_anchors] are global djowel 1208 gcc initialization order warnings djowel 1206 Escaping from within code? djowel 1205 Quickbook getting started djowel 1204 Non-breaking-space? djowel 1202 Add a [teletype] source mode djowel 1200 Revamp the header information djowel 1194 Add ID to table to allow linking to tables easily djowel 1193 Nestable tables and lists and exlicit paragraph markup djowel 1190 Markups inside simple markups djowel 1189 Scoped Macros djowel 1176 Space after inline code djowel 1175 What is punctuation? djowel 1174 Simplified template arg handling djowel 1173 Balanced comments djowel 1172 non-utf djowel 1171 Quickbook title output djowel 1170 Emit Warnings instead of # symbols in the syntax highlighter djowel 1159 bibliography support djowel 1158 optional named parameters djowel 1157 On Images djowel 1156 feature request: linkid to the whole document djowel 664 crash in boost::spirit::parse djowel 543 Embedded python won't compile djowel 314 spirit insert_key_actor.hpp djowel 241 Miss " = ParserT()" dlwalker 653 [integer] add support for integers longer than long dlwalker 613 boost/crc.hpp uses non-standard conforming syntax doug_gregor 1087 Mismatch between BBv2 and bjam toolsets in configure script. doug_gregor 1076 compile error: disconnecting struct with operator()() doesn't work in VS2005 SP1 doug_gregor 1067 Function needs to use pass-by-reference internally doug_gregor 1021 [Graph][reverse_graph] Problem using reverse_graph adapter with an adapted user defined graph doug_gregor 954 boost::dynamic_properties has no copy-constructor doug_gregor 891 Bunch of compilation error reported while using function.hpp doug_gregor 870 boost::graph::graph_utility.hpp is_connected() bad call doug_gregor 862 [utility] Make result_of handle lambda expressions doug_gregor 852 Problem with Boost and GCC 4.1 doug_gregor 829 Implicit graph not implement doug_gregor 746 max flow with lower bounds (capacities) doug_gregor 738 Memory leaks with signal::connect? doug_gregor 736 Const correctness violation doug_gregor 735 Fruchterman-Reingold grid performance can be improved doug_gregor 733 Numbered headers don't work with "preferred" syntax doug_gregor 732 Johnson All-Pairs needs better "no path" information doug_gregor 708 Dijkstra no_init version should not require VertexListGraph doug_gregor 447 reverse_graph and constness of property maps doug_gregor 403 Document copy_component doug_gregor 402 random_vertex/random_edge are unnecessarily inefficient doug_gregor 395 BGL graph types do not support allocators doug_gregor 375 LEDA graph adaptors do not handle hidden nodes properly doug_gregor 373 LEDA graph adaptors for undirected graphs doug_gregor 372 adjacency_matrix should model BidirectionalGraph ebf 1112 reference_wrapper<T> should convert to reference_wrapper when T& is convertible to U& ebf 993 Variant should use least common multiple of alignments_ rather than maximum ebf 965 [doc] boost::variant tutorial - final example uses v1_v2 should be seq1_seq2 ebf 547 [variant] Compile time checked getter eric_niebler 1119 enable_reference_tracking copy constructor does not call base class version eric_niebler 1071 Request for BOOST_REVERSE_FOREACH and rationale fcacciola 1217 value_initialized leaves data uninitialized_ when using MSVC fcacciola 282 boost::optional<enum> fails with /CLR fcacciola 818 No zero-argument in_place() fcacciola 617 Numeric Conversion Documentation minor bug garcia 1045 [multi_array] Need a proper swap operation grafik 1203 Decouple the backend grafik 1146 KAI Referenced in compiler status acknowledgements grafik 1135 bjam crashes grafik 1128 boost-buil rule does not overrule BOOST_BUILD_PATH grafik 1088 Docs for template escape feature. grafik 1074 FreeBSD specific patches to boost 1.34.0 grafik 1041 Cygwin requires PATH setting. grafik 1040 boost.devel archive at ActiveState disconnected grafik 1031 AmigaOS fixes for bjam grafik 1023 inspect grafik 989 Boost build does not support building universal binaries on macintosh grafik 714 [jam] HardLink rule on NT platform grafik 94 Better reporting of failed expectation. grafik 93 Testing problems on AIX and OSF grafik 1062 Cygwin install stage fails with combination of patches grafik 977 bjam crashes when compiled with gcc 4.2 grafik 959 linking fails when Boost is compiled with STLport 5.1.* on Linux (names mismatch) grafik 896 <native-wchar_t>off does not work when build with vc-8.0 grafik 798 bjam: always define OSPLAT grafik 721 Generated files "@()" don't work in regular expressions. grafik 683 libraries won't build grafik 616 Boost Jam_ and non english directorys grafik 552 Building universal binary on MacOSX grafik 546 boost.build needs fixes for HP/UX grafik 497 Unable to build boost with Dinkumware STL version 4.02 grafik 481 Linker Problems with VC .NET 2003 / STLPort / Boost grafik 431 boost jam problem with parallel builds hkaiser 1077 Spirit integer parser does not always detect integer overflow hubert_holin 647 octonion documentation bug hubert_holin 162 Cannot compile octonion_test.cpp because of bug in sinc.hpp igaztanaga 1210 interprocess::barrier hangs during second use under linux (boost 1.33.1) igaztanaga 1080 boost::interprocess win32 global file mapping issue jbandela 665 bug in char_separator jbandela 501 token_iterator::at_end() result is inversed jbandela 306 Visual C++ "Language Extensions" support jbandela 283 Compiler error for tokenizer on Solaris jbandela 279 SLOOOWW tokenizer compilation on VC++6.0 jbandela 259 Problem compiling :/ jmaurer 920 Proposed extension to random library jmaurer 819 uniform_int<> with type's maximum availaible range error jmaurer 351 Diff in state of mersenne_twister gen between GCC3.41 & CW9 johnmaddock 1216 problems compiling template class using is_class and is_arithmetic johnmaddock 1178 Regular expression min match length johnmaddock 1130 GCC -wundef warnings johnmaddock 1083 boost_regex 1.34.0 uses ICU library without linking to it johnmaddock 1081 Empty string rejected as perl-style regex johnmaddock 1008 Undocumented type traits. johnmaddock 1148 boost_1_34_1 regex library compile failure on aix with xlv johnmaddock 1105 Add BOOST_NO_STD_TYPEINFO or inject ::type_info into std johnmaddock 1104 Add BOOST_NO_TYPEID johnmaddock 1103 Add BOOST_NO_IOSFWD johnmaddock 1102 Add BOOST_NO_IOSTREAM johnmaddock 883 errors when build with Apache stdcxx johnmaddock 764 [regex] add support for a BOOST_NO_CREGEX mode johnmaddock 633 [config] evc4 port johnmaddock 591 make portable stdint.h from boost code johnmaddock 502 Problem running configure for unsupported platform johnmaddock 492 Adding boost::is_complex to type_traits.hpp jsiek 905 Assertion failed in token_iterator.hpp jsiek 315 Implement operator[] for Tokenizer jsiek 900 graphml reader namespace handling is broken jsiek 875 No iterator based constructor for adjacency_matrix jsiek 815 remove_edge core dumps on self-circle jsiek 813 concept_check.hpp unused variable warning jsiek 694 Add Maximum Common Subgraph (MCS) algorithm jsiek 636 strange compiling problem for transitive_closure jsiek 580 Max Flow Algorithm jsiek 575 Calling subgraph::global_to_local on a root graph jsiek 541 [concept_check.hpp] remove unused variable warning in msvc jsiek 416 Spelling of Edmonds-Karp-Algorithm jsiek 193 Check ordering for mutexes jsiek 182 Support aspect-orientation jsiek 100 more use of the concept "allocator" mark_rodgers 821 allow_unregistered improvement mark_rodgers 558 add database library? mark_rodgers 87 function to get the size of a array mark_rodgers 30 parser mistevens 688 ublas: bug in mapped_vector_of_mapped_vector mumiee 1201 Regexify the syntax highlighter nasonov 922 Lexical cast and wide characters nasonov 913 Specialization of lexical_cast nasonov 754 boost::any - typeid comparison across shared boundaries nasonov 1220 lexical_cast requires RTTI nasonov 839 lexical_cast - local variable shadow patch nesotto 1151 [range] make_indirect_range() nesotto 1145 Small bugs in Boost.Range documentation nesotto 1027 [ptr_container] optional serialization support nesotto 807 boost::assignment documentation: mathematical "typo" nesotto 730 The ptr_map iterator cannot be dereference to value type nesotto 518 [Boost.Range]boost::const_begin calls non-qualified 'begin' nesotto 471 boost.range and "const char[]". nesotto 723 local_time_facet error in VS2005 Win2003 nobody 884 [iostreams] workaround for the boost + stdcxx on MSVC 7.1 nobody 795 [ublas] vector::back() pavol_droba 1152 rle_example fails pdimov 1114 Request for shared_ptr::type and shared_ptr::pointer pdimov 1113 shared_array<T> should convert to shared_array<T const> pdimov 1111 boost::bind objects should expose function_type and list_type pdimov 1110 Add a release method to scoped_array pdimov 1109 intrusive_ptr needs a helper base class pdimov 1108 shared_ptr does not compile under g++ with -fno-rtti pdimov 1107 Add weak_use_count to weak_ptr as a debugging aid pdimov 1106 shared_ptr<T> should not convert to shared_ptr when T* doesn't convert to U* pdimov 997 error in boost::bind doc pdimov 810 support for weak_ptr binding pdimov 445 Can't delete automatically in circularly included object. pdimov 398 Support for embedded VC++ 4.0 ramey 1143 Archive headers appear to be missing multiple(?) include files ramey 1142 boost/serialization/optional doesn't include necessary header ramey 1141 Dangerious operator<< for wostream ramey 1137 Virtual destructor is missing ramey 1121 xml_archive_exception is missing seperate header file_ and documentation mismatch ramey 1089 missing boost::serialization::make_nvp in pointer container library ramey 1086 Serialization of weak_ptr produces invalid XML ramey 1038 "<" and ">" should be excaped in xml_oarchive ramey 1036 assert failure in oserializer.hpp:418 ramey 969 basic_binary_iprimitive::load_binary bug ramey 968 xml_grammar - incorrect define char ramey 961 boost::basic_binary_oprimitive not instantiated correctly ramey 874 Ability to partially specialize implementation_level ramey 757 xml serialization fails when using namespace ramey 878 error C2039: 'mbstate_t' : is not a member of 'std' rogeeff 1212 Template fixtures rogeeff 1169 errors in tutorial for test framework "new_year_resolution" rogeeff 1136 Let BOOST_CHECK_EQUAL support std::wstring rogeeff 1060 no example sources in online docs for Boost::Test rogeeff 1050 BOOST_CHECK_CLOSE_FRACTION documentation missing rogeeff 1032 typo in Boost.Test documentation rogeeff 1030 execution_monitor.ipp #warning directive breaks compilation on MSVC 8.0 rogeeff 999 prg_exec_fail3 fails on release variant rogeeff 998 prg_exec_fail2 fail on ppc rogeeff 962 Missing links in Test library documentation rogeeff 956 Doc error in test examples. rogeeff 842 typo in auto_unit_test.hpp Revision 1.17 rogeeff 607 Log level names wrong in documentation rogeeff 893 grammatical error in error message rogeeff 847 [Test Library] How to init/free a singleton rogeeff 762 [test] evc4 issue with SEH support rogeeff 747 failing on 6 targets in MacOS X rogeeff 645 [test] no eh exception handling functions on evc4 samuel_k 585 64 bit compile warning/error for boost::format samuel_krempp 1196 Patch: when BOOST_NO_STD_LOCALE is not defined_ boost/format/internals.hpp fails to compile. samuel_krempp 1195 patch: boost/format/parsing.hpp does not compile if BOOST_NO_LOCALE_ISDIGIT is defined samuel_krempp 859 boost::format ignores a user defined locale samuel_krempp 980 boost.format vc8/win32 compilation warning samuel_krempp 704 format zero length string msvc-8 shammah 840 pool allocator - local variable shadow patch shammah 836 warning using pool.hpp shammah 386 boost::pool_allocator breaks with vector of vectors shammah 290 perfomance: memory cleanup for pool takes too long shammah 284 pool::purge_memory() does not reset next_size shammah 88 ct_gcd_lcm.hpp compilation error speedsnail 1138 Problems with TSS and static thread library t_schwinger 1100 Building boost.function_types fails cvs rev-1.1_ no chdir command in bash turkanis 869 [iostreams] patch for building by BBv2 turkanis 856 iostreams file_descriptor::write fails under Win32 turkanis 822 Incorrect usage of bad_write()_ bad_seek() etc. turkanis 817 Performance problem in iostreams turkanis 791 iostreams::tee_filter is for output only turkanis 786 bug in iostreams/copy.hpp line 81 turkanis 699 Changing size of memory-mapped file on Windows turkanis 586 iostreams // file_descriptor::seek BUG on files > 4 GB turkanis 579 boost.iostreams file_descriptor and sharing turkanis 525 problem with boost::iostreams when compiled with Visual C++ turkanis 484 Boost.Iostreams and newline translation urzuga 864 [lambda][utility] Make lambda support result<> urzuga 781 Lambda: (_1 + "y")(string("x")) Doesn't Compile urzuga 574 [boost::lambda] Compile error with libstdc++ debug mode urzuga 426 lambda vs pure virtual functions vladimir_prus 1177 Various bugs in STLport jamfile vladimir_prus 1165 more quoting problems vladimir_prus 1132 program_options documentation error. vladimir_prus 1129 Standalone doc_ outdated path from homepage vladimir_prus 1058 Cygwin libraries & GNU libtool vladimir_prus 985 Free features don't work when building boost vladimir_prus 850 program_options strips off escaped quotes in some situations vladimir_prus 689 [program_options] Endless loop with long default arguments vladimir_prus 674 find-library for boost decorated names vladimir_prus 469 multitoken broken witt 1046 Boost.Python quickstart instructions mention nonexistent target witt 973 zip_iterator has value_type == reference witt 957 The "Getting Started" page does not mention the stdlib option witt 834 Homepage regression links witt 145 filter iterator adaptor should be able to be bidirectional -- -- Marshall Marshall Clow Qualcomm, Inc. <mailto:mclow@qualcomm.com> The famous British scientist, Lord Kelvin, said: "When you measure what you are speaking about and express it in numbers, you know something about it, but when you cannot (or do not) measure it, when you cannot (or do not) express it in numbers, then your knowledge is of a meagre and unsatisfactory kind."

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