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

Suggestion to lexical_cast library
by Márcio Gil 16 Dec '07

16 Dec '07

Hello, I suggest this add on lexical_cast library: a lexical_cast_def function, which work's like the AnsiString's ToIntDef method (from Borland VCL). Reason: the use of a lexical_cast without a try ... catch block, if the source is not guaranteed to be safe. Example: string source; int x = lexical_cast_def<int>( source, 0 ); In opposite of: string source; int x; try { x = lexical_cast<int>( source ); } catch(...) { x = 0; } Soon I can write this function in my project: template<typename Target, typename Source> Target lexical_cast_def(Source arg, Target def) { Target result; try { result = lexical_cast<Target>(Source); } catch (..) { result = def; } return result; } Otherwise we can post in the library this simplest and fastest function: template<typename Target, typename Source> Target lexical_cast_def(Source arg, Target def) { detail::lexical_stream<Target, Source> interpreter; Target result; if(!(interpreter << arg && interpreter >> result)) return def; return result; } And the call-by-const reference version. Thanks, Marcio Gil. P.S.: This is my first post in this list, soon excuse my bad English, I don't speak English, is that used only for reading.

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[spirit] Causes a blizzard of warning from Boost.Format under MSVC?
by John Maddock 15 Dec '07

15 Dec '07

I'm at a loss to explain this, but this program: #include <boost/math/special_functions.hpp> int main() { boost::math::erf(2); } Compiles cleaning with MSVC-8, but as soon as I add a particular spirit #include: #include <boost/math/special_functions.hpp> #include <boost/spirit/utility/distinct.hpp> int main() { boost::math::erf(2); } Then Boost.Format (used internally be Boost.Math for error message formatting) issues a whole blizzard of warnings, that I actually thought I had fixed. I've checked Spirit for mismatched #pragma push/pop declarations, but they all look OK to me. Does anyone have any ideas what may be going on here, 'cos I'm stumped and the warnings are really very annoying! Many thanks, John.

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[1.35.0][conversion] Failure to merge trunk changes to release branch
by Beman Dawes 15 Dec '07

15 Dec '07

A number of failures for release branch testing of the conversion library were the result of changes to trunk that were not also merged into the release branch. Developers need to remember to merge changes into branches/release if the changes are to go in the 1.35.0 release. To speed testing, I've now done that for the conversion library. But, really, this is something individual developers need to take responsibility for. --Beman

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[units] - BOOST_UNITS_STATIC_CONSTANT
by Noah Roberts 15 Dec '07

15 Dec '07

It would appear that there's something wrong with this macro. I've looked at it and I'm not sure how it happens... In a precompiled header I'm including a system of units I'm creating. Some are simply composites of fundamental dimensions that are missing, such as volumetric flow, but others are different dimensions, such as currency. Some of the files that include this precompiled header use time(), the C function. However, if I use BOOST_UNITS_STATIC_CONSTANT to instantiate the unit for currency, which I'm pasting below, with VC++ 8, it pulls the time dimension into the global namespace. This of course causes the whole project to fail since that's where time() lives. If I just create a static variable this doesn't happen. What was the problem with static variables that necessitates a BOOST_UNITS_STATIC_CONSTANT? I'm using the mcs units from the vault, has this problem been fixed or even noticed before? Is there a report of changes to mcs that I can view? #pragma once #include <boost/units/systems/si.hpp> namespace esi { namespace units { using namespace boost::units; namespace systems { namespace SI { using namespace boost::units::SI; struct currency_tag : ordinal<11> {}; // dimension tag for currency typedef fundamental_dimension<currency_tag>::type currency_type; typedef unit<currency_tag, SI::system> currency; //BOOST_UNITS_STATIC_CONSTANT(coin, currency); static currency const coin; } } } }

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Boost.Math: Ignored trac patches
by Jens Seidel 15 Dec '07

15 Dec '07

Hi John, you are the maintainer of Boost.Math and very active on the list to fix bugs in many libraries. May I ask why you ignore your own bugs such as http://svn.boost.org/trac/boost/ticket/1454? Did you not recieved the bug report because both messages were (maybe) considered as SPAM or what is the reason to not apply a patch which fixes build failures and a typo (you included sinh.hpp where sin.hpp was required)? Many other patches from me are also still not applied (and are nearly 2 months old) but math is properly maintained, right? Jens

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[thread] thread_specific_ptr: iterator
by Michael Gopshtein 14 Dec '07

14 Dec '07

When working with "tread local storage" I find it sometimes very useful to get an access to instances of the class of all threads from single location. For example, when each thread stores some info in its own object, and you want to be able to collect overall data. So I think it would be helpful to add some form of iterator over the instances. Do you find such functionality valuable? Michael

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VC++ issues in trac [ Looking for help ]
by Marshall Clow 14 Dec '07

14 Dec '07

There are two issues having to do with VC 8 and VC 8 (and the random library) in the trac database. They are really the same thing, reported for two different versions of the compiler. Can someone with access to Visual Studio check these patches and let me know if they work as advertised? I can apply it/them, if needed. The issues are: <http://svn.boost.org/trac/boost/ticket/1423> MSVC uniform int workaround not required for VC++ 2008 and <http://svn.boost.org/trac/boost/ticket/1473> VC++ 2009 does not need workaround Thanks! -- -- 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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Trac open bugs - by assignee
by Marshall Clow 14 Dec '07

14 Dec '07

[ 195 open bugs today, 195 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> Bug summary 17 dgregor 17 az_sw_dude 15 djowel 12 turkanis 12 doug_gregor 11 grafik 11 dave 10 None 9 agurtovoy 7 johnmaddock 6 vladimir_prus 6 jsiek 6 anthonyw 5 witt 4 pdimov 4 igaztanaga 4 bemandawes 3 ramey 3 jmaurer 3 ebf 3 danielw 2 urzuga 2 samuel_krempp 2 rogeeff 2 pavol_droba 2 niels_dekker 2 nesotto 2 nasonov 2 <Blank> 1 t_schwinger 1 speedsnail 1 shammah 1 matias 1 marshall 1 kaalus 1 hljin 1 hkaiser 1 dlwalker 1 burbelgruff 1 aaron_windsor <Blank> 1307 [lambda] invalid boostbook <Blank> 1434 Boost.Preprocessor_ small fix for the documentation None 1068 Mersenne twister disables streaming for Visual C++ None 1094 Finding the correct library to link (feature request for pkg-config support)h None 1222 lambda::ret<T> should declare result_type. None 1247 Typos in "boost/random/additive_combine.hpp"_ lines 68-69 None 1270 uniform_smallint doesn't compile with lagged_fibonacci random number generators None 1407 Boost is doesn't install on MacPorts using Leopard None 1423 MSVC uniform int workaround not required for VC++ 2008 None 1473 VC++ 2009 does not need workaround None 1493 SVN files making it through to install None 1515 [lambda] C4512 warnings from VC8.0 aaron_windsor 778 top-level configure is broken agurtovoy 1001 gcc 4.1.2 segfaults on mpl/test/apply.cpp agurtovoy 1051 MPL header ordering triggers bug agurtovoy 1099 unable to iterate through a "non-explicitly-declared" mpl::set agurtovoy 1215 Boost 1.34.1_ mpl: Wrong workaround detection using MinGW32 (or.hpp_ line #33) agurtovoy 1317 has_xxx randomly broken in msvc agurtovoy 1469 [mpl] nested typedef of set has two different meanings agurtovoy 1476 always<> is not nullary. agurtovoy 588 mpl::remove compile error with gcc 4.1.0 agurtovoy 640 documentation mistake anthonyw 1154 tss destruction segfaults in conjunction with dlopen/dlclose anthonyw 1168 [thread] tss crashes randomly anthonyw 1268 xtime_cmp changes to deal with overflow were reverted anthonyw 1470 Boost.Thread: Compilation errors with non-__cdecl calling convention anthonyw 876 xtime documentation incomplete anthonyw 881 errors when build with Apache stdcxx az_sw_dude 1028 typo in boost header: date_time/time_defs.hpp az_sw_dude 1078 from_iso_string cannot read the output from to_iso_string az_sw_dude 1098 Urgent libboost-date-time1.33.1 : bugs on ia64 ? az_sw_dude 1147 date_time library contains global #define ERROR az_sw_dude 1160 warning: month_format shadows a member of this az_sw_dude 1162 warning: ticks shadows a member of this az_sw_dude 1289 posix_time::time_facet forgets to pass a_ref argument to base class az_sw_dude 1299 change in typedef stringstream_type in format_date_parser.hpp causing compilation error az_sw_dude 1306 invalid docbook in date_period.xml az_sw_dude 1384 Linking problem with date_time library on Visual C++ 2008 Express az_sw_dude 1386 date_time documentation Jamfile breaks building of boost docs az_sw_dude 287 wrong usage of ios_base::narrow az_sw_dude 316 date_time type conversion warning az_sw_dude 604 from_ftime incorrectly processes FILETIME filled with zeros az_sw_dude 642 operator<< for gregorian::date_duration not found az_sw_dude 889 Insane Dependencies az_sw_dude 890 date_time library supports only the current dst rule bemandawes 1378 filesystem path invalid name for hidden files (LINUX) bemandawes 1389 filesystem::ostream << boost::format generates operator ambigious error (in MSVC++) bemandawes 1458 Darwin Tiger throws std::runtime_error: locale::facet::_S_create_c_locale name not valid bemandawes 752 directory_iterator doesn't work with catch burbelgruff 1503 typeof bug (big integral constant) danielw 1044 Argument pack inaccessable in a functions return type danielw 1054 Parameter takes an "infinite" amount of time to compile with the Intel compiler. danielw 1097 keyword.hpp generates many warnings C4180: qualifier applied to function type has no meaning; ignored dave 1010 linking boost.python on freebsd dave 1019 iterator_facade::pointer should be the return type of operator-> (DR 445) dave 1085 Python rules for compiling in Mac OS X dave 1179 [boost.python] can not export a union in VC2005sp1 dave 1181 [boost.python] can modify enum value dave 1387 Review / update docs to reflect changes dave 1460 Python classes with multiple bases are convertible only to the first class in the lists dave 1482 boost::python::throw_error_already_set should be marked noreturn dave 1516 [python] Failing VC9 regression tests dave 865 Use of C++0x keyword as identifier dave 910 gcc strict-aliasing problems with python dgregor 1003 [iostreams] copy-paste error in typedefs for wchar multichar_filters dgregor 1139 [iostreams] Regex filter segfaults when zero matches found dgregor 1140 boost::iostreams linked_streambuf bug dgregor 1149 Minor doc error in basic_null_device dgregor 1164 Floyd Warshall broken with unsigned edge weights dgregor 1185 iostreams::direct_streambuf<T_Tr>::is_open always returns false if output iterator is not null dgregor 1192 [boostbook] problem when two files have the same name dgregor 1199 configure doesn't work with path containing whitespaces (MacOS X) dgregor 1232 mapped_file_source::is_open() is broken under windows dgregor 1310 [result_of] const-qualified function pointer doesn't work dgregor 1326 Unable to check graph isomorphism using LEDA adapter dgregor 1391 dominator_tree_test on Borland/CodeGear outputs overly long line dgregor 1394 Translate libs/graph/build/python/Jamfile to BBv2 dgregor 1395 Write Tests for Python Bindings dgregor 556 Bundled graph properties dgregor 732 Johnson All-Pairs needs better "no path" information dgregor 736 Const correctness violation djowel 1170 Emit Warnings instead of # symbols in the syntax highlighter djowel 1171 Quickbook title output djowel 1172 non-utf djowel 1176 Space after inline code djowel 1206 Escaping from within code? djowel 1273 CR+LF newlines in position_iterator djowel 1276 spirit problem with _GLIBCXX_DEBUG djowel 1277 Closing section like [pre with } causes Quickbok to crash djowel 1280 sections in imported source files get put inside <para> elements in docbook output djowel 1281 Quickbook produces invalid BoostBook/DocBook XML djowel 1324 tuple should have a swap() that operates element-by-element djowel 1396 wrong result_of invocation around transform_view djowel 1436 [quickbook] inline code inside headings djowel 1484 Quickbook produces illegal docbook for some docinfo fields. djowel 1500 [Spirit/Phoenix] C4512 Compiler warnings from VC8 dlwalker 613 boost/crc.hpp uses non-standard conforming syntax doug_gregor 1021 [Graph][reverse_graph] Problem using reverse_graph adapter with an adapted user defined graph doug_gregor 1076 compile error: disconnecting struct with operator()() doesn't work in VS2005 SP1 doug_gregor 375 LEDA graph adaptors do not handle hidden nodes properly doug_gregor 402 random_vertex/random_edge are unnecessarily inefficient doug_gregor 403 Document copy_component doug_gregor 447 reverse_graph and constness of property maps doug_gregor 708 Dijkstra no_init version should not require VertexListGraph doug_gregor 733 Numbered headers don't work with "preferred" syntax doug_gregor 735 Fruchterman-Reingold grid performance can be improved doug_gregor 738 Memory leaks with signal::connect? doug_gregor 829 Implicit graph not implement doug_gregor 852 Problem with Boost and GCC 4.1 ebf 1507 [variant] C4512 warnings from VC8.0 ebf 965 [doc] boost::variant tutorial - final example uses v1_v2 should be seq1_seq2 ebf 993 Variant should use least common multiple of alignments_ rather than maximum grafik 1041 Cygwin requires PATH setting. grafik 1062 Cygwin install stage fails with combination of patches grafik 1322 trac rejects patch attachment as spam grafik 1417 Regresson tests hang in Darwin (Tiger) grafik 1430 Regression fails under Cygwin grafik 1433 Trac's spam detection rejects too many valid messages grafik 1512 Broken link to vacpp in bjam docs. grafik 1513 Broken link to bcpp in bjam docs. grafik 616 Boost Jam_ and non english directorys grafik 959 linking fails when Boost is compiled with STLport 5.1.* on Linux (names mismatch) grafik 986 Problem building Python modules on boost 1.34.0 hkaiser 1079 boost-1.34.0 fails to compile. concept checks not satisfied. hljin 1522 bit_range friend decl in bit_aligned_pixel_reference.hpp needs to be fully qualified for gcc 4.3 mainline igaztanaga 1080 boost::interprocess win32 global file mapping issue igaztanaga 1210 interprocess::barrier hangs during second use under linux (boost 1.33.1) igaztanaga 1231 interprocess_condition (emulated) hangs after notify_all(). igaztanaga 1390 Interpocess: managed shared memory failing completely under OS X jmaurer 351 Diff in state of mersenne_twister gen between GCC3.41 & CW9 jmaurer 599 uniform_01 copies engine instead of using a reference jmaurer 819 uniform_int<> with type's maximum availaible range error johnmaddock 1081 Empty string rejected as perl-style regex johnmaddock 1314 Using SSE-intrinsics in VC8 causes static assert in type_with_alignment.hpp johnmaddock 1411 Fix BOOST_PARTIAL_SPECIALIZATION_EXPLICT_ARGS johnmaddock 1440 libs/config/test/link/Jamfile.v2 confuses process_jam_log johnmaddock 1446 POSIX API doesn't use C locale johnmaddock 1451 error: use of C99 long long integer constant johnmaddock 1511 Non latin symbols in regexp jsiek 416 Spelling of Edmonds-Karp-Algorithm jsiek 575 Calling subgraph::global_to_local on a root graph jsiek 636 strange compiling problem for transitive_closure jsiek 815 remove_edge core dumps on self-circle jsiek 875 No iterator based constructor for adjacency_matrix jsiek 900 graphml reader namespace handling is broken kaalus 1184 property_tree assignment (operator) bug marshall 1252 [pool] severe overhead with unaligned sizes. matias 1406 Understanding the Tables outdated nasonov 1220 lexical_cast requires RTTI nasonov 754 boost::any - typeid comparison across shared boundaries nesotto 1284 [range] sub_range assignment issue nesotto 1464 boost_range_array unused in several array_size() functions niels_dekker 1459 value_initialized leaves data uninitialized_ when using Borland niels_dekker 1491 value_initialized leaves data uninitialized_ when using GCC pavol_droba 1152 rle_example fails pavol_droba 1385 begin must be boost-qualified pdimov 1106 shared_ptr<T> should not convert to shared_ptr<U> when T* doesn't convert to U* pdimov 1108 shared_ptr does not compile under g++ with -fno-rtti pdimov 1444 scoped_ptr::operator== should be equivalent to a.get()==b.get()_ but is currently !!a==!!b pdimov 997 error in boost::bind doc ramey 1038 "<" and ">" should be excaped in xml_oarchive ramey 1121 xml_archive_exception is missing seperate header file_ and documentation mismatch ramey 1508 text_map_binary_archive failure rogeeff 1383 signal.h features not found on Mac OS rogeeff 1489 BOOST_CHECK_CLOSE fails to compile with templated value type samuel_krempp 1510 [format] C6323 compiler warning from VC8/VC9 samuel_krempp 859 boost::format ignores a user defined locale shammah 386 boost::pool_allocator breaks with vector of vectors 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 1002 [iostreams] close_impl<closable_tag> does not comply with spec turkanis 1033 iostreams::restrict doesn't work on an iostreams::file_source turkanis 1070 [iostreams]boost\iostreams\copy.hpp line80 copy_impl turkanis 525 problem with boost::iostreams when compiled with Visual C++ turkanis 699 Changing size of memory-mapped file on Windows turkanis 786 bug in iostreams/copy.hpp line 81 turkanis 791 iostreams::tee_filter is for output only turkanis 817 Performance problem in iostreams turkanis 822 Incorrect usage of bad_write()_ bad_seek() etc. turkanis 823 Seekable file_descriptor_source /sink? turkanis 824 BOOST_IOSTREAMS_HAS_LSEEK64 on Mac OS X turkanis 856 iostreams file_descriptor::write fails under Win32 urzuga 574 [boost::lambda] Compile error with libstdc++ debug mode urzuga 781 Lambda: (_1 + "y")(string("x")) Doesn't Compile vladimir_prus 1165 more quoting problems vladimir_prus 1274 Useless error message vladimir_prus 1275 boost::program_options::validation_error::what() is private vladimir_prus 1321 invalid docbook in tool documentation vladimir_prus 469 multitoken broken vladimir_prus 689 [program_options] Endless loop with long default arguments witt 1046 Boost.Python quickstart instructions mention nonexistent target witt 583 Fixes for build on IBM pSeries for AIX and Linux witt 834 Homepage regression links witt 957 The "Getting Started" page does not mention the stdlib option witt 973 zip_iterator has value_type == reference -- -- 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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[Report] 17 failures on release branch (2007-12-13)
by Douglas Gregor 14 Dec '07

14 Dec '07

Boost regression test failures Report time: 2007-12-13T18:54:16Z This report lists all regression test failures on high-priority platforms. Detailed report: http://boost.org/regression/branches/release/developer/issues.html 17 failures in 7 libraries conversion (5 failures) function_types (1 failures) fusion (4 failures) lambda (1 failures) numeric/interval (3 failures) regex (1 failures) serialization (2 failures) |conversion| lexical_cast_test: acc darwin-4.0.1 darwin-4.0.1 msvc-7.1 msvc-8.0 |function_types| fast_mem_fn_example: msvc-7.1 |fusion| deque_copy: msvc-7.1 deque_make: msvc-7.1 deque_misc: msvc-7.1 deque_tie: msvc-7.1 |lambda| operator_tests_simple: msvc-7.1 |numeric/interval| mul: darwin-4.0.1 overflow: darwin-4.0.1 pi: darwin-4.0.1 |regex| regex_regress_threaded: darwin-4.0.1 |serialization| test_demo_portable_archive: darwin-4.0.1 test_demo_portable_archive_dll: darwin-4.0.1

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[tr1][functional] fails to compile under gcc 4.0.1 on OS X
by Matthias Schabel 14 Dec '07

14 Dec '07

This code compiles using Intel ICC 10.1, but fails with "error: utility: No such file or directory in file included from /usr/local/ include/boost/tr1/functional.hpp" under gcc : #include <boost/tr1/functional.hpp> namespace mcs { class SPGR { public: SPGR(double TR,double TE,double alpha,double T10,double T20,double r1,double r2) { } ~SPGR() { } double Xi(double C) const { return 1.0; } void test() const; }; inline void SPGR::test() const { using namespace std::tr1::placeholders; std::tr1::function<double (double)> f(std::tr1::bind(&SPGR::Xi,this,_1)); } } // namespace mcs int main() { mcs::SPGR spgr(10,1,15,1000,100,4e-3,5e-3); return 0; } I don't think I'm doing anything blatantly stupid here...any ideas on what's going on? Matthias

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