October 2006 - Boost-users - lists.preview.boost.org

[function][lambda] Create a boost function to a bind functor
by Chris Weed 19 Oct '06

19 Oct '06

Hi, I would like to create a boost::function to a lambda::bind functor such as float fx(float a, float b) { return a+b; } int main() { boost::function<float(float)> f = boost::lambda::bind(fx,_2,2); std::cout << f(3) << std::endl; return 0; } I would expect this to bind 2 to the "b" argument of fx, and print "5". Instead with msvc-8.0 I get a bunch or compile errors. Any help would be greatly appreciated. Chris

3 5

[mpl::map] compilation error when using custom length
by Ovanes Markarian 19 Oct '06

19 Oct '06

As previously described in my former posting (http://lists.boost.org/boost-users/2006/10/22961.php) I am trying to instantiate a mpl::map with 150 types. Defining macros as stated in the documentation did not help. After taking a look in to the boost/mpl/map.hpp include file I assume that previously described error resides because compiler tries to include some pre-generated files: ----------------map.hpp excerpt----------------- #if !defined(BOOST_MPL_PREPROCESSING_MODE) # include <boost/mpl/limits/map.hpp> # include <boost/mpl/aux_/na.hpp> # include <boost/mpl/aux_/config/preprocessor.hpp> # include <boost/preprocessor/inc.hpp> # include <boost/preprocessor/cat.hpp> # include <boost/preprocessor/stringize.hpp> #if !defined(BOOST_NEEDS_TOKEN_PASTING_OP_FOR_TOKENS_JUXTAPOSING) # define AUX778076_MAP_HEADER \ BOOST_PP_CAT(map, BOOST_MPL_LIMIT_MAP_SIZE).hpp \ /**/ #else # define AUX778076_MAP_HEADER \ BOOST_PP_CAT(map, BOOST_MPL_LIMIT_MAP_SIZE)##.hpp \ /**/ #endif # include BOOST_PP_STRINGIZE(boost/mpl/map/AUX778076_MAP_HEADER) # undef AUX778076_MAP_HEADER #endif #include <boost/mpl/aux_/config/use_preprocessed.hpp> #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ && !defined(BOOST_MPL_PREPROCESSING_MODE) # define BOOST_MPL_PREPROCESSED_HEADER map.hpp # include <boost/mpl/aux_/include_preprocessed.hpp> #else # include <boost/mpl/limits/map.hpp> # define AUX778076_SEQUENCE_NAME map # define AUX778076_SEQUENCE_LIMIT BOOST_MPL_LIMIT_MAP_SIZE # include <boost/mpl/aux_/sequence_wrapper.hpp> #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS #endif // BOOST_MPL_MAP_HPP_INCLUDED -------------end of map.hpp excerpt------------- As described in the documentation this file can not generate anything in a preprocessor mode until the macro BOOST_MPL_PREPROCESSING_MODE was defined. After the definition of this macro I got new errors. This errors were referring to some unknown types but the fact of preprossor execution was obvious at this time. The new errors are: c:\boost\include\boost-1_33_1\boost\mpl\aux_\sequence_wrapper.hpp(246) : error C2065: 'na' : undeclared identifier c:\boost\include\boost-1_33_1\boost\mpl\aux_\sequence_wrapper.hpp(254) : error C2913: explicit specialization; 'boost::mpl::map' is not a specialization of a class template c:\boost\include\boost-1_33_1\boost\mpl\aux_\sequence_wrapper.hpp(254) : error C2976: 'boost::mpl::map' : too few template arguments c:\boost\include\boost-1_33_1\boost\mpl\aux_\sequence_wrapper.hpp(254) : see declaration of 'boost::mpl::map' To be honest I do not know what would be the right solution, but the documentation insisted way does not work. Attached is my cpp file containing the defintions. I try to compile it using Visual C++ 2005 Express Edition. Should I run some generator scripts to create map60.hpp ... map150.hpp? Or is there any other solution? Would really appreciate any help! With Kind Regards, Ovanes Markarian

1 0

[boost-users][serialization] unused variable in boost/archive/detail/[oserialize.hpp | iserialize.hpp]
by david callu 19 Oct '06

19 Oct '06

Hi all I have a warning message when i compile my application. /usr/include/boost/archive/detail/oserializer.hpp:118: attention : unused parameter 'flags' /usr/include/boost/archive/detail/iserializer.hpp:126: attention : unused parameter 'flags' This is not really important but it's not really serious to have warning in the compilation. I see in Boost CVS that the "flags" variable is not yet commented. Why didn't do it? David Callu

1 0

[asio] Win32 exception harmless?
by Christian Henning 18 Oct '06

18 Oct '06

Hi there, when I call acceptor::listen() in my application I get the following exception: First-chance exception at 0x7c812a5b in Server.exe: 0x000006D9: There are no more endpoints available from the endpoint mapper. The client can connect. The server does not fail or terminate. Everything seems fine. So, can I ignore that exception? Thanks, Christian

2 1

[asio] some general user questions
by Christian Henning 18 Oct '06

18 Oct '06

Hi there, I have been using ASIO for some weeks, now. I really like the lib and have made good progress. Even though the learning curve was quite steep for me. I have never really programmed networking code. So please excuse my most likely dumb questions. The reason why I ask is to get to know the lib better and try to avoid adding code on my side for stuff I can simply poll from the lib. 1. [server side] Are errors the only way to get notice when a client disconnects. 2. [server side] How can I poll if a server is connected to a client. 3. I have been asking questions regarding asio for some time now and never gotten any answer. Is the boost user list the right forum? For example yesterday I posted a message for a memory leaks reported by MFC and nobody replied, so far. 4. [server side] When running io_service::run() on a separate thread, is io_service::interrupt() the only way to let ioservice return from run(). Basically what do I need to do to gracefully quite my server app when there are still clients connected. Same questions goes for the client apps. 5. [client side] When I quite the client app (MFC) I get a lot of these error message: "The I/O operation has been aborted because of either a thread exit or an application request". I seems for every message I send to the server I got one of this error. I use io_service::post() to initiate a send operation. I can provide sample applications that produce my problems. I'm using VC7.1 SP2. Thanks ahead, Christian

2 1

threadpool library
by Philipp Henkel 18 Oct '06

18 Oct '06

Hi, I'm the author of a boost based thread pool lib (http://threadpool.sf.net) mentioned before in the "boost::thread queries" thread and I would like to give you some insight in the lib's future. As there's strong request for further features I plan to extend the pool step by step. Scott Meyers inspired me with policy based design at one of this C++ workshop and therefore I'm going to provide more policies for the pool. 1. Task scheduling policies Lifo, fifo, and priority based policies are already implemented. However, there's some work to be done to support bounded / blocking queues. 2. Pool resizing policies (Not implemented) These policies control the number of threads in the pool: Fixed pool, growing pool, bounded pool, dynamic shrinking, ... 3. Future creation policy (Not implemented) - General support for futures - Implementation independence: support for arbitrary future implementations (e.g. the future lib in boost vault) - I plan to provide a simple future implementation modelled on Peter Dimov's proposal http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2096.html 4. General design I think, the Java framework (J2SE5 as java.util.concurrent) is well designed. I plan to provide similar functionality (futures, dynamic pools, etc) without relying on the interface concept (using templates and boost::function/bind instead). I have not yet read the document "Multithreading API for C++0X" ( http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2094.html) Anyway, the threadpool lib should focus on providing a flexible, extensible, light-weight pool which can be used easily in high level concepts (like the Channel lib, fully featured futures, etc.). Any ideas and comments are welcome. Best regards, Philipp

2 2

[BGL] fails to compile on Suse
by Pranab K. Nag 18 Oct '06

18 Oct '06

Hello, I have been trying to get bgl-python (cvs v315) working on suse10.0. Compilation gives a severe error: boost_1_33_1/boost/graph/graph_traits.hpp:49: error: ‘null_vertex’ is not a member of ‘boost::filtered_graph<const boost::graph::python::basic_graph<boost::undirectedS> ..... This is on suse10.0. Everything else seems to compile without much complaining. I can get it to to compile on an experimental fedora core machine but I need the suse machine for development and testing. Let me know if there is a solution to this. I tried searching the archives but seems like I am the only one with this problem. -PK

2 1

Multiple definitions on SuSE 10.1/GCC 4.1.0
by Michael Klemm 18 Oct '06

18 Oct '06

Hey there! We have trouble compiling our project with Boost 1.33 (as of SuSE 10.1). We tried to compile our project, which uses the serialization capabilities of Boost to serialize C++ objects into MPI messages. On IA32, everything works fine with Boost 1.34-rc1 (Debian, kernel 2.6.15.7). However, on my AMD machine with SuSE 10.1 and Boost 1.33, we get linker errors related to multiple definitions of templates: > /proj.stand/klemm/evolFIR-MPI/src/share/Component.o:/proj.stand/klemm/evolFIR-MPI/src/Component.cpp:24: multiple definition of `boost::archive::det > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/DelayOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<co > /proj.stand/klemm/evolFIR-MPI/src/DelayOperator.cpp:25: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/DelayOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<co > /usr/include/boost/archive/detail/oserializer.hpp:148: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/DelayOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<co > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/Iterator.o:/usr/include/boost/serialization/export.hpp:194: multiple definition of `boost::archive::detail: > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynom.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const > /proj.stand/klemm/evolFIR-MPI/src/MapPolynom.cpp:202: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynom.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const > /proj.stand/klemm/evolFIR-MPI/src/MapPolynom.cpp:204: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynom.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynomIterator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pa > /usr/include/boost/serialization/export.hpp:194: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynomIterator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pa > /usr/include/boost/archive/detail/oserializer.hpp:148: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynomIterator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pa The full log of errors is at the end of this message. The command used for linking is: /opt/mpich/ch-p4//bin/mpiCC -shared /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o /proj.stand/klemm/evolFIR-MPI/src/share/Component.o /proj.stand/klemm/evolFIR-MPI/src/share/DelayOperator.o /proj.stand/klemm/evolFIR-MPI/src/share/Iterator.o /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynom.o /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynomIterator.o /proj.stand/klemm/evolFIR-MPI/src/share/MulOperator.o /proj.stand/klemm/evolFIR-MPI/src/share/Operator.o /proj.stand/klemm/evolFIR-MPI/src/share/PolyNormalizator.o /proj.stand/klemm/evolFIR-MPI/src/share/Polynom.o /proj.stand/klemm/evolFIR-MPI/src/share/ShiftOperator.o /proj.stand/klemm/evolFIR-MPI/src/share/XExtractor.o /proj.stand/klemm/evolFIR-MPI/src/share/NTLAdaptor.o /proj.stand/klemm/evolFIR-MPI/src/share/polycommon.o /proj.stand/klemm/evolFIR-MPI/src/share/RandomNumberPool.o -o /proj.stand/klemm/evolFIR-MPI//lib/libpoly.so Replacing mpiCC with g++ does not help either (and on IA32 this command works well). I also tried to use a self-compiled version of Boost on the AMD (Boost 1.34-rc1) but it showed the same compiler errors. I don't think it's a problem with our program, as in IA32 everything works as expected. Any hints? Thanks in advance! Best regards -michael Full log or error messages: > proj.stand/klemm/evolFIR-MPI/src/share/Component.o:/proj.stand/klemm/evolFIR-MPI/src/Component.cpp:24: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/DelayOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /proj.stand/klemm/evolFIR-MPI/src/DelayOperator.cpp:25: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/DelayOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/boost/archive/detail/oserializer.hpp:148: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/DelayOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/Iterator.o:/usr/include/boost/serialization/export.hpp:194: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynom.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /proj.stand/klemm/evolFIR-MPI/src/MapPolynom.cpp:202: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynom.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /proj.stand/klemm/evolFIR-MPI/src/MapPolynom.cpp:204: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynom.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynomIterator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/boost/serialization/export.hpp:194: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynomIterator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/boost/archive/detail/oserializer.hpp:148: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MapPolynomIterator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MulOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /proj.stand/klemm/evolFIR-MPI/src/MulOperator.cpp:255: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MulOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/boost/archive/detail/oserializer.hpp:148: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/MulOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/Operator.o:/proj.stand/klemm/evolFIR-MPI/src/Operator.cpp:14: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/Operator.o:/proj.stand/klemm/evolFIR-MPI/src/Operator.cpp:14: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/PolyNormalizator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /proj.stand/klemm/evolFIR-MPI/src/PolyNormalizator.cpp:22: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/PolyNormalizator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/boost/archive/detail/oserializer.hpp:148: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/PolyNormalizator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/Polynom.o:/proj.stand/klemm/evolFIR-MPI/include/Polynom.h:177: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/Polynom.o:/proj.stand/klemm/evolFIR-MPI/include/Polynom.h:177: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/ShiftOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /proj.stand/klemm/evolFIR-MPI/src/ShiftOperator.cpp:28: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/ShiftOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/boost/archive/detail/oserializer.hpp:148: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/ShiftOperator.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/XExtractor.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/boost/serialization/export.hpp:194: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/XExtractor.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/boost/archive/detail/oserializer.hpp:148: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/XExtractor.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/NTLAdaptor.o: In function `NTLAdaptor': > /proj.stand/klemm/evolFIR-MPI/src/NTLAdaptor.cpp:5: multiple definition of `boost::archive::detail::guid_initializer<Component>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/proj.stand/klemm/evolFIR-MPI/src/AddOperator.cpp:128: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/NTLAdaptor.o: In function `NTLAdaptor': > /usr/include/boost/archive/detail/oserializer.hpp:148: multiple definition of `boost::archive::detail::guid_initializer<Polynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/boost/archive/detail/oserializer.hpp:148: first defined here > /proj.stand/klemm/evolFIR-MPI/src/share/NTLAdaptor.o: In function `destroy<std::map<int, Component*, std::less<int>, std::allocator<std::pair<const int, Component*> > > >': > /usr/include/c++/4.1.0/bits/stl_tree.h:1262: multiple definition of `boost::archive::detail::guid_initializer<MapPolynom>::instance' > /proj.stand/klemm/evolFIR-MPI/src/share/AddOperator.o:/usr/include/c++/4.1.0/bits/stl_tree.h:1262: first defined here > collect2: ld returned 1 exit status

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boost::any, type_info, and dynamically loaded libraries
by Austin Bingham 18 Oct '06

18 Oct '06

I couldn't find any reference to this in the mailing list archives, so I apologize if this is a rehash. Synopsis: I'm experiencing a problem when I try to any_cast a value of an enumeration type while inside code that's part of a dynamically loaded library. I have one library that defines an enumeration. I have an application that packages up a value of this enumeration type into a boost::any. The application then dynamically loads yet another library and passes this any to a function in the newly loaded library. However, when the code in the DL library tries to any_cast the enumeration value out of the any, I receive a bad_any_cast exception. I've instrumented the any_cast code and have verified that the type_info.name() strings for both the stored and requested types are the same. However, the operator== for the type_info's is still returning false. As far as I know, type_info comparison across dynamically loaded libraries should work as long as operator== is used. Does anyone have any idea if this is a compiler issue (as I think it is)? Has anyone else experienced this kind of issue? Here's some system info that may be relevant: g++ 4.1.0 linux 2.6.16.13-4-smp (SuSE 10's default kernel) boost 1.32.0 binutils 2.16.91.0.5-18 -- Austin Bingham

3 2

Can't access www.boost.org
by Terry G 18 Oct '06

18 Oct '06

I have been having trouble accessing the boost web site. No problem accessing other web sites. Am I the only one? terry

4 3