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Boost python library build error
by Yogesh Arora 11 Mar '10

11 Mar '10

Hi I am using Boost 1.39.0 on Sun os. I have compiled boost libraries myself with sun toolset using these options ./bootstrap.sh --with-toolset=sun While building i get this error ./boost/python/detail/wrap_python.hpp", line 78: Error, usererror: #error Python 2.2 or higher is required for this version of Boost.Python i have python 2.4 installed on my machine, and it is in my PATH variable, however boost build is not picking it up. Is there somehow i can explicitly specify in the jam command line. ---- Yogesh

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Boost.regex expression construction
by Shaolin 11 Mar '10

11 Mar '10

Hi Guys I am using boost.regex to check whether a string has opening and closing brackets. The problem is the expression doesnt work. I have tried all sorts of combos and read up the doc too to no avail. Can someone tell me whether the following does what its supposed to (i.e. look for opening/closing brackets in a string): boost::regex e("[\\(\\)]"); /*check for opening/closing brackets*/ Regards

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[multiarray] Regression with MSVC10 assigning sub-array to array?
by Jesse Perla 11 Mar '10

11 Mar '10

It looks to me like there is a regression with multi_array in boost 1.42 using the MSVC10 RC. The problem is when you assign a sub_array to an array. This code works fine on MSVC9 and Intel 11.1 on windows. Any easy patches that could fix this, or am I missing something? #include <boost/multi_array.hpp> int main(int argc, char* argv[]) { boost::multi_array<double, 3> f_values(boost::extents[5][6][7]); //A boost::multidimensional object boost::detail::multi_array::sub_array<double, 2> sub_f = f_values[2]; //Works boost::multi_array<double, 2> sub_f2 = f_values[2]; //Fails, used to work } =============================== The error novel (ignoring the warning about unsafe iterators) is: 1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xutility(2216): error C2665: 'std::_Copy_impl' : none of the 2 overloads could convert all the argument types 1> C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xutility(2182): could be '_OutIt std::_Copy_impl<_InIt,_OutIt>(_InIt,_InIt,_OutIt,std::input_iterator_tag,std::output_iterator_tag)' 1> with 1> [ 1> _OutIt=boost::detail::multi_array::array_iterator<double,double *,boost::mpl::size_t<2>,boost::detail::multi_array::sub_array<double,1>>, 1> _InIt=boost::detail::multi_array::array_iterator<double,const double *,boost::mpl::size_t<2>,boost::detail::multi_array::const_sub_array<double,1>> 1> ] 1> C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xutility(2191): or '_OutIt std::_Copy_impl<_InIt,_OutIt>(_InIt,_InIt,_OutIt,std::random_access_iterator_tag,std::random_access_iterator_tag)' 1> with 1> [ 1> _OutIt=boost::detail::multi_array::array_iterator<double,double *,boost::mpl::size_t<2>,boost::detail::multi_array::sub_array<double,1>>, 1> _InIt=boost::detail::multi_array::array_iterator<double,const double *,boost::mpl::size_t<2>,boost::detail::multi_array::const_sub_array<double,1>> 1> ] 1> while trying to match the argument list '(boost::detail::multi_array::array_iterator<T,TPtr,NumDims,Reference>, boost::detail::multi_array::array_iterator<T,TPtr,NumDims,Reference>, boost::detail::multi_array::array_iterator<T,TPtr,NumDims,Reference>, boost::detail::iterator_category_with_traversal<Category,Traversal>, boost::detail::iterator_category_with_traversal<Category,Traversal>)' 1> with 1> [ 1> T=double, 1> TPtr=const double *, 1> NumDims=boost::mpl::size_t<2>, 1> Reference=boost::detail::multi_array::const_sub_array<double,1> 1> ] 1> and 1> [ 1> T=double, 1> TPtr=const double *, 1> NumDims=boost::mpl::size_t<2>, 1> Reference=boost::detail::multi_array::const_sub_array<double,1> 1> ] 1> and 1> [ 1> T=double, 1> TPtr=double *, 1> NumDims=boost::mpl::size_t<2>, 1> Reference=boost::detail::multi_array::sub_array<double,1> 1> ] 1> and 1> [ 1> Category=std::input_iterator_tag, 1> Traversal=boost::random_access_traversal_tag 1> ] 1> and 1> [ 1> Category=std::input_iterator_tag, 1> Traversal=boost::random_access_traversal_tag 1> ] 1> C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xutility(2227) : see reference to function template instantiation '_OutIt std::_Copy_impl<_Iter,_OutIt>(_InIt,_InIt,_OutIt,std::tr1::false_type)' being compiled 1> with 1> [ 1> _OutIt=boost::detail::multi_array::array_iterator<double,double *,boost::mpl::size_t<2>,boost::detail::multi_array::sub_array<double,1>>, 1> _Iter=boost::detail::multi_array::array_iterator<double,const double *,boost::mpl::size_t<2>,boost::detail::multi_array::const_sub_array<double,1>>, 1> _InIt=boost::detail::multi_array::array_iterator<double,const double *,boost::mpl::size_t<2>,boost::detail::multi_array::const_sub_array<double,1>> 1> ] 1> C:\working\libraries\boost\boost/multi_array.hpp(337) : see reference to function template instantiation '_OutIt std::copy<boost::detail::multi_array::array_iterator<T,TPtr,NumDims,Reference>,boost::detail::multi_array::array_iterator<T,T *,NumDims,boost::detail::multi_array::sub_array<T,1>>>(_InIt,_InIt,_OutIt)' being compiled 1> with 1> [ 1> _OutIt=boost::detail::multi_array::array_iterator<double,double *,boost::mpl::size_t<2>,boost::detail::multi_array::sub_array<double,1>>, 1> T=double, 1> TPtr=const double *, 1> NumDims=boost::mpl::size_t<2>, 1> Reference=boost::detail::multi_array::const_sub_array<double,1>, 1> _InIt=boost::detail::multi_array::array_iterator<double,const double *,boost::mpl::size_t<2>,boost::detail::multi_array::const_sub_array<double,1>> 1> ] 1> C:\working\libraries\boost\boost/multi_array.hpp(332) : while compiling class template member function 'boost::multi_array<T,NumDims>::multi_array(const boost::detail::multi_array::sub_array<T,2> &)' 1> with 1> [ 1> T=double, 1> NumDims=2 1> ] 1> ..\test.cpp(14) : see reference to class template instantiation 'boost::multi_array<T,NumDims>' being compiled 1> with 1> [ 1> T=double, 1> NumDims=2 1> ]

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Re: [Boost-users] [Serialization] Strange giant warning
by Avi Bahra 11 Mar '10

11 Mar '10

>I'm speaking from memory and it's possible that the situation >has changed since 1.39 and the message is now spurious. If so >send a small test case which shows that the library has a bug. > >Robert Ramey The case you highlight is correct, and should produce a warning message. However a small variation shown below produces the same message, which I believe is wrong . This warning message is present in1.39, 1.40 on HPUX and AIX , on Linux/gcc there is _no_ such warning. class concrete { ... }; class base { ~virtual base(); ... vector<boost::shared_ptr<concrete> > vec_; }; class derived : public base { .... }; BOOST_CLASS_EXPORT(Derived); Here you will see the same warning message, saying that class 'concrete' should be polymorphic. Best regards. Ta, Avi

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Re: [Boost-users] [Serialization] Strange giant warning
by Avi Bahra 11 Mar '10

11 Mar '10

This is caused by a bug in the boost serialisation, well at least in 1.39 Where is assumes that shared ptr must be polymorphic I have already reported a similar problem. i.e >>... boost_1_39_0/boost/ >>serialization/extended_type_info_typeid.hpp", line >> 88: >> warning #2414-D: delete of pointer to incomplete class >> BOOST_STATIC_WARNING(boost::is_polymorphic<T>::value); >> ^detected during: >> instantiation of "const boost::serialization::extended_type_info >> *boost::serialization::extended_type_info_typeid<T>::get_derived_extended_type_info(const >> T &) const [with T=Concrete]" at line 92 of >> "/scratch/ma/emos/ma0/hpia64/boost/boost_1_39_0/boost/archive/shared_ptr_helper.hpp" >> >> >> It looks like if we are serialising via a base ptr, and the >> base class is serialising concrete data member via a shared ptr, >> it has assumed that the type must be polymorphic. This does >> not seem right to me ? The hacky way to stop your warning message would be add a dummy virtual function. Best regards, Ta, Avi

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Regex alternation in xpressive
by Surya Kiran Gullapalli 11 Mar '10

11 Mar '10

Hello all, I'm trying to match ordinal numbers (1st, 2nd, 3rd, 4th etc) like this. *xpr::as_xpr ("Some Text") * * >> xpr::repeat<1, 2>(_d) * * >> ("st"|"nd"|"rd"|"th") ;* Compilation fails at 3rd line with the following error error C2296: '|' : illegal, left operand has type 'const char [3]' ; what am i missing ? did I give the construct correctly ? Thanks in advance, Surya

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BOOST_SERIALIZATION_BASE_OBJECT_NVP not convenient for template base class and XML archive
by Alain KOCELNIAK 11 Mar '10

11 Mar '10

template < class eArchive > void MtxAnsFunctionIntegerPipe::serialize( eArchive& aArchive, const unsigned int aVersion ) { aArchive & BOOST_SERIALIZATION_BASE_OBJECT_NVP( MtxAnmFunctionTpl<int> ) ; aArchive & BOOST_SERIALIZATION_NVP( mVariable ) ; } #define BOOST_SERIALIZATION_BASE_OBJECT_NVP(name) \ boost::serialization::make_nvp( \ BOOST_PP_STRINGIZE(name), \ boost::serialization::base_object<name >(*this) \ The stringized class name ("MtxAnmFunctionTpl<int>") generate a non valid XML tag name (due to < > ) There is no BOOST_SERIALIZATION_BASE_OBJECT_NVP2( type, tag) macro (as BOOST_CLASS_EXPORT_KEY2(class, key) for BOOST_EXPORT_CLASS_KEY(class) ). Such a macro is necessary to write things like : aArchive & BOOST_SERIALIZATION_BASE_OBJECT_NVP2( MtxAnmFunctionTpl<int>, "MtxAnmFunctionTplInt" ) ; In the next release ? Alain K.

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[function] dynamic function factory
by Alexander Lamaison 11 Mar '10

11 Mar '10

I'm trying to write a little wrapper round Windows GetProcAddress (dlsym equivalent?) that takes a function name by string, loads it dynamically and returns it as a boost::function. I'm having trouble getting my code to accept the same type of signatures as boost::function. E.g.: template<typename Signature> boost::function<Signature> proc_address( hmodule hmod, const std::string& name) { return boost::function<Signature>(GetProcAddress(hmod, name.c_str()); } Where GetProcAddress returns a int (*)() which you cast to the function signature you're expecting. The problem is that when I call: boost::function<int (int)> func; func = proc_address<int (int)>(hmod, "GetKeyboardInfo"); The compiler (MSVC 2005) complains about a ) after the int: error C2144: syntax error : 'int' should be preceded by ')' error C2563: mismatch in formal parameter list Am I trying to reuse boost::function the wrong way? I also tried making a functor instead but I have no idea what to put as the parameter list for operator(): template<typename Signature> class dynamic_function { public: dynamic_function(hmodule hmod, const std::string& name) : m_func(GetProcAddress(hmod, name.c_str())) {} operator()(...what goes here?...) { return m_func( ... what ... ); } private: boost::function<Signature> m_func; }; Any help is greatly appreciated. Alex

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integer constant too large for 'long' type
by David Kaplan 11 Mar '10

11 Mar '10

I'm having problems compiling this line of code on a 32bit system: boost::uniform_int<uint64_t> r(0,0xffffffffffffffff); compile-time error: "integer constant too large for 'long' type" compiled fine on my 64 bit machine. Also sizeof(uint64_t) on both machines is correct at 8 bytes (typedef'd as long long int on the 32bit machine). Any ideas?

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Boost.Asio chat example chat_client have 3 connections, what other 2 connections doing?
by l.jay Yuan 11 Mar '10

11 Mar '10

Boost.Asio chat example chat_client have 3 connections, what other 2 connections doing? Builded on WinXP. The implementation is strange.

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