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Dead link on main page
by Tim St. Clair 15 Jan '10

15 Jan '10

Version 1.40.0.cmake2 (Boost + CMake) goes to no where. -- Cheers, Timothy St. Clair

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[serialization] boost 1.33.1, HP-UX ia64 & gcc-3.4.4
by Frank Bergemann 15 Jan '10

15 Jan '10

Hi, for a porting job i needed to shift from OSF tru64 to HP-UX V3 ia64 (on both using gcc-3.4.4) There i have stream error exception for boost::serialization data import via XML. The exception is thrown here: include/boost/archive/impl/basic_xml_iarchive.ipp: template<class Archive> BOOST_ARCHIVE_OR_WARCHIVE_DECL(void) basic_xml_iarchive<Archive>::load_start(const char *name){ // if there's no name if(NULL == name) return; bool result = this->This()->gimpl->parse_start_tag(this->This()->get_is()); if(true != result){ boost::throw_exception( archive_exception(archive_exception::stream_error) ); } // don't check start tag at highest level ++depth; return; } I.e. it fails to parse the XML data via boost:spirit. I tried to debug with 'gdb', but was impossible for me at the level of boost::spirit parser implementation. Then i was remembering, that there are two sets of boost libs - one "normal" and a "debug" version. So i switched to the debug version - just to see, if i can better dig into the details with 'gdb' with it. And suddenly the problem was gone. I.e. my application works, if i link with libboost_serialization-gcc-d.a But it doesn't work, if i link with libboost_serialization-gcc.a I also tried to extract all the stuff from the boost::serialization, that is used by my application, into a little test program. Just to feed in the same XML string, that fails for my application. I wanted to see, that i can re-produce the problem - but for a minimum program. - for using that next to evaluate deeper. But - unfortunately - for my test programm it works (with both library versions, "debug" and "normal" one). So it is really hard to find the reason for the problem. I also checked about compiler support on the boost.org pages. And actually it was only boost lib 1.38.0, which mentions HP-UX IA64 together with gcc. But that was gcc-4.2.1 (i use 3.4.4.). Before 1.38.0, it was alway the HP native compiler (not gcc). After 1.38.0 HP-UX is not mentioned at all anymore. So i guess i am generally in bad conditions for my "constellation" (HP-UX ia64 V3, gcc-3.4.4, boost 1.33.1). What is the difference about "debug" lib image and "non-debug" lib image? Is it just optimization level for the compiler? Do you have any hint for me? It might be a problem of gcc-3.4.4 itself on hp-ux (i'll check). But it would be interesting to here, if s.o. else had the same problem(?!) - many thanks! Frank Bergemann ____________________________________________________________________ WEB.DE MillionenKlick: Kostenlos tippen, täglich 1 Million gewinnen! http://produkte.web.de/go/07/

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How to use boost-build/bjam with only home directory acces?
by s seelenluft 15 Jan '10

15 Jan '10

Hi, I have successfully installed boost-build and bjam on a Linux workstation where I only had access to my home folder, but I have trouble replicating this on another. I put the boot-build folder at the top level of my home folder and created also a bin folder there into which I copied the content of boost-build folder and the bjam binary. I then added an environmental variable BOOSTROOT with the value '../' and set my jamroot file to <include>$BOOSTROOT. I can now start bjam from folders one level below the home folder. On a different Linux system this fails with the error: Unable to load Boost.Build: could not find "boost-build.jam" --------------------------------------------------------------- Attempted search from /afs/.../trunk-1 up to the root and in these directories from BOOST_BUILD_PATH and BOOST_ROOT: /usr/share/boost-build. Please consult the documentation at 'http://www.boost.org'. The boost-build.jam file sits in the same folder as bjam (~/bin) but on one system bjam finds it and on another it does not. The folder /usr/share/boost-build does not exist and I do not have the permission to create it. I've used boost-jam 3.1.13 on both systems (since it worked fine on one system, I was loth to change anything). This was the current version when I started the whole business. In short: Is there any way to tell bjam to use the local boost-build.jam file? Thanks. Markus

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[karma] using attributes out of order
by Cory Nelson 15 Jan '10

15 Jan '10

Hello, I was fairly familiar with Spirit 1, but I'm now making my first foray into Spirit 2. I'm trying to write something with karma's attribute system. Say I've got a fusion adapted struct: struct s { int foo; double bar; std::string baz; }; The Spirit docs give plenty of examples like: int_ << double_ << string But I can't find any docs showing how to output the members in a different order, like: double_ << string << int_ Is there a recommended way to achieve this? Thanks! -- Cory Nelson

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BoostJam sensitive to spaces in paths, in particular in TMP
by Bilokon, Paul 15 Jan '10

15 Jan '10

Hi all, Just found this, apparently a bug, in BoostJam. I'm using an admittedly old version of Boost, V1.36.0, in this particular instance. I'm using the latest BoostJam, V3.1.17. This occurs on Windows when the TMP environment variable contains spaces. In my case it was "C:\Documents and Settings\xxxxxxxxxxx\Local Settings\Temp" When you try to run something like C:\Programs\Win32\BoostJam\V3.1.17\bjam.exe --build-type=complete --toolset=msvc-90 --with-thread You get MkDir1-quick-fix-for-windows bin.v2\libs\thread 'C:\Documents' is not recognized as an internal or external command, operable program or batch file. if not exist "bin.v2\libs\thread\\" mkdir "bin.v2\libs\thread" ...failed MkDir1-quick-fix-for-windows bin.v2\libs\thread... This is fixed by set TMP=C:\temp I don't know if this merits a patch. Regards, Paul Paul Bilokon, Vice President Citigroup | FX - Options Trading | Quants 33 Canada Square | Canary Wharf | Floor 3 London, E14 5LB Phone: +44 20 798-62191 paul.bilokon(a)citi.com<mailto:paul.bilokon@citi.com>

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read_graphviz in 1.4x series
by Cyrus Hall 15 Jan '10

15 Jan '10

Ciao all- I've been happily using the boost graph library for a number of months now. Thanks to everyone who has contributed to this great piece of software. After upgrading from boost 1.38 to 1.40 in Ubuntu, read_graphviz now prints to std::cerr the graph it has just read. I downloaded to the source code to make sure this wasn't some cruft left over by the Ubuntu package managers, and it seems these print statements are in the main distribution package. This change seems to correspond with a complete rewrite of the scanning and parsing underlying read_graphviz, which seems to have happened between 1.39 and 1.40. 1.41 contains no changes from 1.40 in read_graphviz_new.cpp. The particular offending lines of code are in translate_results_to_graph in read_graphviz_new.cpp, starting at line 760. This is called directly from detail::graph::read_graphviz on line 796. I see no obvious way to toggle these print statements. But I also can't find other messages about this problem, so I'm guessing I'm just missing something. Is there someway I can get read of this debugging output? Cheers, Cyrus

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atomic read/write operations for integral types/pointers, just like tbb::atomic<T>.
by Michal 15 Jan '10

15 Jan '10

Hallo Group Members. Does boost::thread offer something that can act on integral types/pointers in atomic fashion, just like intel's tbb::atomic<T> does? best regards, Michal

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[asio] asio-client only connects to server when on same machine
by Grotjahn Clemens (CM-AI/PJ-CF22) 15 Jan '10

15 Jan '10

hello, i just found out what was wrong. it was an empty, uninitialised string that indeed made my client connect only to localhost.... now everything is fine! thanks

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Windows: Mixed .NET and native C++ with Boost
by Richwin, Dr. Matthias 15 Jan '10

15 Jan '10

Hi all, I try the following scenario: - a C++ library (my own code), unmanaged, makes use of boost (e.g. regex) - a C++ .NET application (windows forms based) planned as GUI (having used Borland C++ builder in the past, the windows forms approach looks quite appealing to me) - my C++ library header is included in the .Net form header file wrapped in a #pragma unmanaged/managed pair. I compiles and links well. For simple test purposes, I instantiate a class from my C++ library in the form constructor. Calling some unmanaged code from my library there creates a debug assertion: "Debug Assertion Failed! [...] Expression: _CrtIsValidHeapPointer(pUserData) " The call stack at that moment is as follows ("Application.exe" is my Windows Forms Application): > msvcr90d.dll!_msize_dbg(void * pUserData=0x8914c5e3, int nBlockUse=2) Zeile 1511 + 0x30 Bytes C++ msvcr90d.dll!_dllonexit_nolock(int (void)* func=0x89521903, void (void)* * * pbegin=0x0012f000, void (void)* * * pend=0x0012eff8) Zeile 295 + 0xd Bytes C msvcr90d.dll!__dllonexit(int (void)* func=0x89521903, void (void)* * * pbegin=0x0012f000, void (void)* * * pend=0x0012eff8) Zeile 273 + 0x11 Bytes C Application.exe!_onexit(int (void)* func=0x0046dce0) Zeile 110 + 0x1b Bytes C Application.exe!atexit(void (void)* func=0x0046dce0) Zeile 127 + 0x9 Bytes C Application.exe!boost::re_detail::`dynamic initializer for 'block_cache''() Zeile 191 + 0x2b Bytes C++ [Übergang von Verwaltet zu Systemeigen] Application.exe!_initterm(void** pfbegin = 0x0046E3A4, void pfend = ) Zeile 130 C++ Application.exe!<CrtImplementationDetails>::LanguageSupport::InitializeNative() Zeile 555 C++ Application.exe!<CrtImplementationDetails>::LanguageSupport::_Initialize() Zeile 678 C++ Application.exe!<CrtImplementationDetails>::LanguageSupport::Initialize() Zeile 876 C++ Application.exe!?.cctor@@$$FYMXXZ() Zeile 922 + 0x9 Bytes C++ [Unten angegebene Rahmen sind möglicherweise nicht korrekt und/oder fehlen, keine Symbole geladen für mscorwks.dll] ntdll.dll!7c91d39c() kernel32.dll!7c839736() ntdll.dll!7c91d39c() kernel32.dll!7c839736() kernel32.dll!7c809b32() kernel32.dll!7c80ae80() ntdll.dll!7c91dfac() kernel32.dll!7c8329b0() mscoree.dll!79007c24() kernel32.dll!7c817067() To me, it looks like the DLL initialization failed. Is anybody out there who might help me with this issue? I am completely new to this .Net thing... Best regards Matthias Leopold KOSTAL GmbH & Co. KG - Sitz Lüdenscheid, Registergericht Iserlohn HRA 2854, phG Kostal Verwaltungsgesellschaft mbH, Registergericht Iserlohn HRB 4061 - USt-Id-Nr./Vat No.: DE 125800885 Post- und Werksanschrift: An der Bellmerei 10, D-58513 Lüdenscheid * Telefon: +49 2351 16-0 * Telefax: +49 2351 16-2400 Bellmerei Geschäftsführung: Dipl.-Kfm. Helmut Kostal (Vorsitzender), Dipl.-Oec. Andreas Kostal, Dipl.-Wirtsch.-Ing. Hermann Eidel, Dipl.-Ing. Marwin Kinzl, Dr.-Ing. Ludger Laufenberg

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[multiarray] problems passing views by reference
by Rhys Ulerich 14 Jan '10

14 Jan '10

Recently, Hanan Sadar asked about a multi_array fill implementation [1]. The standard std::fill_n(x.data(),x.num_elements(),v) answer only works when x is a boost::multi_array or boost::multi_array_ref but does not handle the general MultiArray concept. I decided to implement an arbitrary dimensional MultiArray fill capable of handling such views correctly. It's been absolutely miserable for reasons I don't understand but which resemble comments from James Amundson's recent thread [2]. Attached is my attempt with two exasperating lines marked by "Cannot use reference, why?". For a non-multi_array, non-multi_array_ref instance (i.e. a view) using a signature like template< class Array, class V > void operator()(Array x, const V &v); allows the code to compile and operate correctly. However, it incurs pass-by-value overhead. Using a signature like template< class Array, class V > void operator()(Array &x, const V &v); using pass-by-reference dies at compilation time. All of my attempts to use MultiArray's associated typedefs die, including hours of mucking with MultiArray::reference. What am I missing here? Why can't I pass a general MultiArray view type by reference? - Rhys [1] http://groups.google.com/group/boost-list/browse_thread/thread/829ebea7fef2… [2] http://groups.google.com/group/boost-list/browse_thread/thread/4531a7c35a58…

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