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Dealing with resistance to Boost
by hano botha 12 Jul '12

12 Jul '12

I am trying to get my organisation to use Boost. I have managed to get it included in source control and we have permission to use it in our unit testing. The main objection to using it in our production code is that it could be a potential security risk. I suggested that we restrict the usage of boost to the template\ headers only libraries. I don't see how the templates in boost can cause more of a security risk than what we have currently with the STL. My question is: How is vulnerabilities in the library dealt with? How is new vulnerabilities communicated to the user's community? I would also like to know historically, how many and how often were vulnerabilities discovered? Any good references would be great. Thanks,

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boost range question
by tolik levchik 12 Jul '12

12 Jul '12

Why min_element give me errors without BOOST_RANGE_ENABLE_CONCEPT_ASSERT defined 0? Is it uses only for make error messages more readable? Is it safe to define it to 0? #include <vector> //#define BOOST_RANGE_ENABLE_CONCEPT_ASSERT 0 #include <boost/range.hpp> #include <boost/range/adaptors.hpp> #include <boost/range/algorithm.hpp> #include <boost/range/numeric.hpp> #include <boost/bind.hpp> struct foo{ int x; }; int main() { using namespace boost::adaptors; using boost::bind; std::vector<foo> vec; auto rng = vec | transformed(bind(&foo::x, _1)); boost::accumulate(rng, 0); // ok boost::min_element(rng); // error }

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Re: [Boost-users] Boost 1.49 msm problems with events
by Kamel Zaarouri, Mr 11 Jul '12

11 Jul '12

Hi, I am having problems with my transition table and events. Let me explain the fake design that illustrates the problem: I have a state machine (myStateMachine) containing 2 states (s0 and s1) and 1 substatemachine (subm1). the substatemachine subm1 contains an initial state 'sub0' and also s1 (the same state as in myStateMachine). this is the main transition table: s0->s1 on event 'ES1' s0->s2 on event 'ES2' s0->subm1 on event 'ESUB' this is the submachine transition table: sub0->s1 on event ES1 now, assume that state s1 is using the event that triggered it to extract some information i.e. struct s1 : public msm::front::state<> { template <class Event,class FSM> void on_entry(Event const& evt,FSM& fsm) { evt.getEventData(); } } so every event that could transition to s1 needs to implement getEventData() method. ->this is normal! now my problem is that ESUB does NOT implement getEventData() but apparently it should. And I don't get why. I am not using ESUB to transition to s1 but I am using ESUB to transition to subm1 and subm1 contains s1 but I don't access it at that point. I hope this is clear. Thank you.

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[asio] asynchronous reading/writing to the tcp stream
by Ovanes Markarian 11 Jul '12

11 Jul '12

Hello *, I go through the ASIO docs, but somehow do not get if I can implement the following scenario: In one thread I would like to send lot's of commands to the server via a tcp connection. In the other thread I would like to start reading the commands being already handled and returned by the server. The commands are parsed by Spirit.QI. My idea was to use a tcp::iostream asynchronously so that I just pass the begin iterator to the output stream to QI and receive parsed data. If there is no output from the server the iterator should block and wait for it. This is a producer-consumer problem, but I would like to solve it with tcp::iostream and without explicit synchronization on my side. Is it possible? If yes, than how? I understand that I can introduce some storage, read bytes to it and notify my hand-crafter iterator, that there is some data that can be read again, but is there a better approach? Thanks, Ovanes

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boost::bind overloaded operators
by tolik levchik 11 Jul '12

11 Jul '12

Hello, i have some questions: 1) Why min_element give me errors without BOOST_RANGE_ENABLE_CONCEPT_ASSERT defined 0? Is it uses only for make error messages more readable? Is it safe to define it to 0? #include <vector> //#define BOOST_RANGE_ENABLE_CONCEPT_ASSERT 0 #include <boost/range.hpp> #include <boost/range/adaptors.hpp> #include <boost/range/algorithm.hpp> #include <boost/range/numeric.hpp> #include <boost/bind.hpp> struct foo{ int x; }; int main() { using namespace boost::adaptors; using boost::bind; std::vector<foo> vec; auto rng = vec | transformed(bind(&foo::x, _1)); boost::accumulate(rng, 0); // ok boost::min_element(rng); // error } 2) Why only logical operators overloaded for boost::bind and arithmetic one are not? Is it safe to define it manually with BOOST_BIND_OPERATOR?

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Using c++11 features in clang
by Marshall Clow 11 Jul '12

11 Jul '12

In response to a some questions on the boost-users list (and boost bug reports), I wrote up this: http://marshall.calepin.co/llvmclang-and-standard-libraries-on-mac-os-x.html I don't know if this should be a FAQ entry for Boost, or for clang. Suggestions/comments/edits welcome. -- Marshall Marshall Clow Idio Software <mailto:mclow.lists@gmail.com> A.D. 1517: Martin Luther nails his 95 Theses to the church door and is promptly moderated down to (-1, Flamebait). -- Yu Suzuki

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Windows 8/Windows Server 2012 compatibility
by Eli Zakashansky 11 Jul '12

11 Jul '12

Hi, Does anyone knows/tested boost compatibility with Windows 8/Windows Server 2012 ? I am currently using Boost 1.39.0, it works very well on prior versions of windows. Should Windows 8 be different ? did anyone faced compatibility issues ? Thanks in advance, Eli Zakashansky.

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Re: [Boost-users] boost::log & Visual Studio 2010 - problem with advanced event log backend
by Don 10 Jul '12

10 Jul '12

Konrad, I don't think the author of boost::log watches this mailing list. You might find more help at the boost-log sourceforge forum: http://sourceforge.net/projects/boost-log/forums/forum/710022. For what it's worth, I found using boost::log to be challenging, because there were lots of API changes between version 1 and 2, the API continues to change, and the documentation has not always kept up with the changes. Furthermore as the author makes changes he uses the current boost sandbox -- boost::log does not always build with the current released version of boost. If you already have a home-grown logging system in place, I'd question whether it is worth the effort to change. Don -------- Original Message -------- Subject: [Boost-users] boost::log & Visual Studio 2010 - problem with advanced event log backend. From: Konrad Rybacki <konrad.rybacki(a)gmail.com> To: boost-users(a)lists.boost.org Date: Tue, 10 Jul 2012 16:57:22 +0200 > Hi All, > > I am trying to introduce boost::log into one of projects I am working > on. The application already does some logging to the trace file and > additionaly uses Windows Event Log to post messages. What I am going > to do is to replace the existing logging framework with boost::log. >

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boost::log & Visual Studio 2010 - problem with advanced event log backend.
by Konrad Rybacki 10 Jul '12

10 Jul '12

Hi All, I am trying to introduce boost::log into one of projects I am working on. The application already does some logging to the trace file and additionaly uses Windows Event Log to post messages. What I am going to do is to replace the existing logging framework with boost::log. Being frank - these are my first attempts at boost at all. I am following exactly the steps from the examples section of the documentation. I have written the following code: boost::shared_ptr< sinks::event_log_backend > backend( new sinks::event_log_backend(( keywords::message_file = "<path to library>.dll", keywords::log_name = "My Application", keywords::log_source = "My Source" )) ); sinks::event_log::event_composer composer( sinks::event_log::direct_event_id_mapping<int>("EventId") ); composer[MY_APPLICATION_SESSION_CREATION_FAILURE] % fmt::message(); backend->set_event_composer(composer); boost::shared_ptr<sinks::synchronous_sink< sinks::event_log_backend>> sink( new sinks::synchronous_sink< sinks::event_log_backend >(backend) ); sink->set_filter( (flt::attr<SeverityLevel>("Severity") == info || flt::attr<SeverityLevel>("Severity") == warning || flt::attr<SeverityLevel>("Severity") == error || flt::attr<SeverityLevel>("Severity") == fatal) && flt::has_attr<int>("EventId") ); sinks::event_log::custom_event_type_mapping<SeverityLevel> mapping("Severity"); mapping[trace] = sinks::event_log::info; mapping[debug] = sinks::event_log::info; mapping[info] = sinks::event_log::info; mapping[warning] = sinks::event_log::warning; mapping[error] = sinks::event_log::error; mapping[fatal] = sinks::event_log::error; sink->locked_backend()->set_event_type_mapper(mapping); logging::core::get()->add_sink(sink); I am building the code with Visual Studio 2010. Unfortunately I get the following error: 1>F:\boost\boost\boost/function/function_template.hpp(153): error C2064: term does not evaluate to a function taking 3 arguments 1> class does not define an 'operator()' or a user defined conversion operator to a pointer-to-function or reference-to-function that takes appropriate number of arguments 1> F:\boost\boost\boost/function/function_template.hpp(147) : while compiling class template member function 'void boost::detail::function::void_function_obj_invoker3<FunctionObj,R,T0,T1,T2>::invoke(boost::detail::function::function_buffer &,T0,T1,T2)' 1> with 1> [ 1> FunctionObj=boost::log_mt_nt5::formatters::fmt_message<char>, 1> R=void, 1> T0=std::basic_ostream<char,std::char_traits<char>> &, 1> T1=const boost::log_mt_nt5::basic_attribute_values_view<char> &, 1> T2=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & 1> ] 1> F:\boost\boost\boost/function/function_template.hpp(907) : see reference to class template instantiation 'boost::detail::function::void_function_obj_invoker3<FunctionObj,R,T0,T1,T2>' being compiled 1> with 1> [ 1> FunctionObj=boost::log_mt_nt5::formatters::fmt_message<char>, 1> R=void, 1> T0=std::basic_ostream<char,std::char_traits<char>> &, 1> T1=const boost::log_mt_nt5::basic_attribute_values_view<char> &, 1> T2=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & 1> ] 1> F:\boost\boost\boost/function/function_template.hpp(722) : see reference to function template instantiation 'void boost::function3<R,T0,T1,T2>::assign_to<Functor>(Functor)' being compiled 1> with 1> [ 1> R=void, 1> T0=std::basic_ostream<char,std::char_traits<char>> &, 1> T1=const boost::log_mt_nt5::basic_attribute_values_view<char> &, 1> T2=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> &, 1> Functor=boost::log_mt_nt5::formatters::fmt_message<char> 1> ] 1> F:\boost\boost\boost/log/sinks/event_log_backend.hpp(678) : see reference to function template instantiation 'boost::function3<R,T0,T1,T2>::function3<FormatterT>(Functor,int)' being compiled 1> with 1> [ 1> R=void, 1> T0=std::basic_ostream<char,std::char_traits<char>> &, 1> T1=const boost::log_mt_nt5::basic_attribute_values_view<char> &, 1> T2=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> &, 1> FormatterT=boost::log_mt_nt5::formatters::fmt_message<char>, 1> Functor=boost::log_mt_nt5::formatters::fmt_message<char> 1> ] 1> LoggingFacility.cpp(111) : see reference to function template instantiation 'boost::log_mt_nt5::sinks::event_log::basic_event_composer<CharT>::event_map_reference &boost::log_mt_nt5::sinks::event_log::basic_event_composer<CharT>::event_map_reference::operator %<boost::log_mt_nt5::formatters::fmt_message<CharT>>(const FormatterT &)' being compiled 1> with 1> [ 1> CharT=char, 1> FormatterT=boost::log_mt_nt5::formatters::fmt_message<char> 1> ] The problem seems to be caused by the following expression: composer[MY_APPLICATION_SESSION_CREATION_FAILURE] % fmt::message(); Other backends work flawlessly. Event log files (.h/.mc/.dll) are OK too. Any help? Regards, Konrad Rybacki.

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boost compilation error on MSVS 2010
by NtVisigoth 10 Jul '12

10 Jul '12

Hello everybody. I have tried to compile boost-libraries and I have trouble with compileation. Try number #1: g:\Projects\boost_1_50_0>bootstrap.bat 1>stdout.txt 2> stderr.txt g:\Projects\boost_1_50_0\tools\build\v2\engine> stdout.txt: Building Boost.Build engine stderr.txt: \Microsoft was unexpected at this time. bootstrap.log: Setting environment for using Microsoft Visual Studio 2010 x86 tools. Try number #2: g:\Projects\boost_1_50_0>bootstrap.bat toolset=msvc 1>stdout.txt 2>stderr.txt g:\Projects\boost_1_50_0> stdout.txt: Building Boost.Build engine Failed to build Boost.Build engine. Please consult bootstrap.log for furter diagnostics. You can try to obtain a prebuilt binary from http://sf.net/project/showfiles.php?group_id=7586&package_id=72941 Also, you can file an issue at http://svn.boost.org Please attach bootstrap.log in that case. stderr.txt: - this file is empty bootstrap.txt: ### ### "Unknown toolset: toolset" ### ### You can specify the toolset as the argument, i.e.: ### .\build.bat msvc ### ### Toolsets supported by this script are: borland, como, gcc, gcc-nocygwin, ### intel-win32, metrowerks, mingw, msvc, vc7, vc8, vc9, vc10, vc11 ### What can I do?

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