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Serialization valgrind reports errors in load() ...
by Sascha Ochsenknecht 21 Jul '07

21 Jul '07

Hello, I have following class which I want to serialize: template < class ValueType > class Values { private: vector< ValueType > _values; public: Values(unsigned p_nr, const ValueType& p_value) : _values(p_nr, p_value) {} Values() {} private: friend class boost::serialization::access; template < class Archive > void load(Archive& p_ar, unsigned /*p_version*/) { p_ar & _values; } template < class Archive > void save(Archive& p_ar, unsigned /*p_version*/) const { p_ar & _values; } BOOST_SERIALIZATION_SPLIT_MEMBER(); }; My main() looks very simple: ... // save const Values<std::string> a(3, "fritz"); { std::ofstream ofs("fritz.txt"); boost::archive::text_oarchive ar(ofs); ar << a; } // restore Values<std::string> b; { std::ifstream ifs("fritz.txt"); boost::archive::text_iarchive ar(ifs); ar >> b; } valgrind reports me following errors (the load() seems to be the problem): ==13202== Conditional jump or move depends on uninitialised value(s) ==13202== at 0x4E59F72: boost::archive::detail::basic_iarchive::reset_object_address(void const*, void const*) (in /usr/lib64/libboost_serialization.so.1.33.1) ==13202== by 0x408A2C: boost::serialization::stl::archive_input_seq<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >::operator()(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&) (collections_load_imp.hpp:54) ==13202== by 0x408ABD: void boost::serialization::stl::rebuild_collection<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> >, boost::serialization::stl::archive_input_seq<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >, boost::serialization::stl::reserve_imp<std::vector<std::string, std::allocator<std::string> > > >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&) (collections_load_imp.hpp:149) ==13202== by 0x408AF7: void boost::serialization::stl::load_collection<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> >, boost::serialization::stl::archive_input_seq<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >, boost::serialization::stl::reserve_imp<std::vector<std::string, std::allocator<std::string> > > >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&) (collections_load_imp.hpp:171) ==13202== by 0x408B1E: void boost::serialization::load<boost::archive::text_iarchive, std::string, std::allocator<std::string> >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (vector.hpp:58) ==13202== by 0x408B5D: boost::serialization::free_loader<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >::invoke(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (split_free.hpp:58) ==13202== by 0x408B87: void boost::serialization::split_free<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (split_free.hpp:74) ==13202== by 0x408BB1: void boost::serialization::serialize<boost::archive::text_iarchive, std::string, std::allocator<std::string> >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (vector.hpp:76) ==13202== by 0x408BEF: void boost::serialization::serialize_adl<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (serialization.hpp:140) ==13202== by 0x408C29: boost::archive::detail::iserializer<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned) const (iserializer.hpp:160) ==13202== by 0x4E5A5B9: boost::archive::detail::basic_iarchive::load_object(void*, boost::archive::detail::basic_iserializer const&) (in /usr/lib64/libboost_serialization.so.1.33.1) ==13202== by 0x4095F7: boost::archive::detail::load_non_pointer_type<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >::load_standard::invoke(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&) (iserializer.hpp:375) ==13202== ==13202== Conditional jump or move depends on uninitialised value(s) ==13202== at 0x4E59FA1: boost::archive::detail::basic_iarchive::reset_object_address(void const*, void const*) (in /usr/lib64/libboost_serialization.so.1.33.1) ==13202== by 0x408A2C: boost::serialization::stl::archive_input_seq<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >::operator()(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&) (collections_load_imp.hpp:54) ==13202== by 0x408ABD: void boost::serialization::stl::rebuild_collection<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> >, boost::serialization::stl::archive_input_seq<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >, boost::serialization::stl::reserve_imp<std::vector<std::string, std::allocator<std::string> > > >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&) (collections_load_imp.hpp:149) ==13202== by 0x408AF7: void boost::serialization::stl::load_collection<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> >, boost::serialization::stl::archive_input_seq<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >, boost::serialization::stl::reserve_imp<std::vector<std::string, std::allocator<std::string> > > >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&) (collections_load_imp.hpp:171) ==13202== by 0x408B1E: void boost::serialization::load<boost::archive::text_iarchive, std::string, std::allocator<std::string> >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (vector.hpp:58) ==13202== by 0x408B5D: boost::serialization::free_loader<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >::invoke(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (split_free.hpp:58) ==13202== by 0x408B87: void boost::serialization::split_free<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (split_free.hpp:74) ==13202== by 0x408BB1: void boost::serialization::serialize<boost::archive::text_iarchive, std::string, std::allocator<std::string> >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (vector.hpp:76) ==13202== by 0x408BEF: void boost::serialization::serialize_adl<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&, unsigned) (serialization.hpp:140) ==13202== by 0x408C29: boost::archive::detail::iserializer<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned) const (iserializer.hpp:160) ==13202== by 0x4E5A5B9: boost::archive::detail::basic_iarchive::load_object(void*, boost::archive::detail::basic_iserializer const&) (in /usr/lib64/libboost_serialization.so.1.33.1) ==13202== by 0x4095F7: boost::archive::detail::load_non_pointer_type<boost::archive::text_iarchive, std::vector<std::string, std::allocator<std::string> > >::load_standard::invoke(boost::archive::text_iarchive&, std::vector<std::string, std::allocator<std::string> >&) (iserializer.hpp:375) I don't see any mistakes in my client code. Seems to be a problem of the boost::serialization library. (I'm using boost 1.33.1) Should I create a bug entry for that, or is it already known? Regards, Sascha

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Boost multi_array declaration inside class header
by GQ Chen 21 Jul '07

21 Jul '07

Hi, I have some troubles in compiling the following simple code, tboost.hpp, tboost.cpp The problem is always from the declaration of array_type A(boost::extents[2000000][1]); in the header file. Error message from compiling, In file included from tboost.cpp:2: tboost.h:14: error: `extents' has not been declared boost.h:14: error: ISO C++ forbids declaration of `parameter' with no type If I define array_type A(boost::extents[2000000][1]); in the source code tboost.cpp, it will compile successfully. Could anyone help me to solve it? Thanks a lot, gq tboost.hpp #include <cassert> #include <stdio.h> #include <iostream> #include "boost/multi_array.hpp" typedef boost::multi_array<double, 2> array_type; class tboost { public: tboost(){}; ~tboost(){}; public: array_type A(boost::extents[2000000][1]); }; #endif tboost.cpp #include "tboost.h" int main () { char c =getchar(); return 0; }

2 1

boost::format convert snprintf.
by chun ping wang 21 Jul '07

21 Jul '07

Hmm is there a way for boost::format to function like snprintf. Example char str[64]; std::cout << boost::format("%s") % str;

2 2

program_options, fvisibility=default, and Mac OS X
by James Jackson 20 Jul '07

20 Jul '07

Hi, Following on from this posting: http://lists.boost.org/boost-users/2007/02/25361.php I am having the same problem with program_options using std::string, compiling my code with gcc-4.0, using Xcode 2.2.1 on Mac OS X 10.4.9. Forcing -fvisibility=default onto the command line does not fix the problem. Do I need to rebuild the libraries with this flag (and if so, how?), or can somebody offer any other suggestions? Regards, James Jackson.

1 0

[Serialization] is_serializable trait?
by Sohail Somani 20 Jul '07

20 Jul '07

Hi, I know there is the tracking level trait. Is that sufficient to be able to say that T is serializable? struct T { T(some_stuff); private: some_non_default_constructing_members; }; In this case, I think tracking level will be set to track selectively but its not serializable as is. Thanks, Sohail

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Graph Permutations of Order n
by Brian Stadler 20 Jul '07

20 Jul '07

Hi list, I'm attempting to create all graphs of order n, isomorphic graphs and all. Basically, with vertices V and Edges E, permutate through all possible variations. Does anyone on this list know of a simple way to do this with the boost graph library or, can point to some location that may help. thanks

2 1

Program Options: Documentation about response files out of date?
by Olaf van der Spek 20 Jul '07

20 Jul '07

Hi, [1] says: > The library does not provide direct support for response files, so you'll need to write some extra code. But this code does the trick without much extra code: std::ifstream is(vm["conf_file"].as<std::string>().c_str()); po::store(po::parse_config_file(is, desc), vm); Or is a response file something else? In that case, maybe that should be mentioned, as I think for lots of users this is enough. [1] http://boost.org/doc/html/program_options/howto.html#id1592676

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[Optional 1.33.1] Assignment of convertible optional to an optional
by contact＠dword.dk 20 Jul '07

20 Jul '07

Hi, >From the documentation I think this should be possible: optional<unsigned short> us; optional<unsigned int> ui; ui = us; In this case it should just leave ui uninitialized. But instead I hit the assertion in reference_const_type get() const, because there is a call to rhs.get() in the operator=(). Is this a bug, or am I doing something wrong? I'm using MSVC7.1. Best regards, Christian Larsen

1 0

[ptr_container] "Cannot access private member..." compile error
by Dan Thill 20 Jul '07

20 Jul '07

Seeking ptr_container guru, My first usage of ptr_container, and I fear I'm missing something obvious. I keep getting the following compile error: -------------------------------------------- Z:\Tools\boost\boost_1_34_0\boost/ptr_container/detail/associative_ptr_container.hpp(202) : error C2248: 'boost::ptr_container_detail::reversible_ptr_container<Config,CloneAllocator>::reversible_ptr_container' : cannot access private member declared in class 'boost::ptr_container_detail::reversible_ptr_container<Config,CloneAllocator>' with [ Config=boost::ptr_container_detail::set_config<Abstract_Record,std::set<void *,boost::void_ptr_indirect_fun<std::less<Abstract_Record>,Abstract_Record>,std::allocator<void *>>>, CloneAllocator=boost::heap_clone_allocator ] Z:\Tools\boost\boost_1_34_0\boost/ptr_container/detail/reversible_ptr_container.hpp(286) : see declaration of 'boost::ptr_container_detail::reversible_ptr_container<Config,CloneAllocator>::reversible_ptr_container' with [ Config=boost::ptr_container_detail::set_config<Abstract_Record,std::set<void *,boost::void_ptr_indirect_fun<std::less<Abstract_Record>,Abstract_Record>,std::allocator<void *>>>, CloneAllocator=boost::heap_clone_allocator ] This diagnostic occurred in the compiler generated function 'boost::ptr_container_detail::associative_ptr_container<Config,CloneAllocator>::associative_ptr_container(const boost::ptr_container_detail::associative_ptr_container<Config,CloneAllocator> &)' with [ Config=boost::ptr_container_detail::set_config<Abstract_Record,std::set<void *,boost::void_ptr_indirect_fun<std::less<Abstract_Record>,Abstract_Record>,std::allocator<void *>>>, CloneAllocator=boost::heap_clone_allocator ] -------------------------------------------- My container is declared thusly: boost::ptr_set<Abstract_Record> And the relevant parts of -------------------------------------------- class Abstract_Record { public: Abstract_Record(); Abstract_Record* clone(); virtual bool operator<(const Abstract_Record&); private: Abstract_Record(const Abstract_Record&); }; -------------------------------------------- I'm having trouble deciphering the error message. I declared a new_clone() function as described in the docs. I also tried writing my own CloneAllocator. Neither have any effect. I would be very grateful for some insight, or even a nudge with a cluebat. -Dan

2 3

[boost.test] Test suits and autoregistration
by Stefan Shishkov 20 Jul '07

20 Jul '07

Hi, I'm using boost 1.33.1, but the question applies to 1.34 too. Is it possible to create tests suites that contain test cases from different translation units using only auto registration? Ex: in file1.cpp BOOST_AUTO_TEST_SUITE(BigSuite); auto-register test suites and cases here... BOOST_AUTO_TEST_SUITE_END(); in file2.cpp BOOST_AUTO_TEST_SUITE(BigSuite); auto-register other test suites and cases here... BOOST_AUTO_TEST_SUITE_END(); As result only one suite with name "BigSuite" should be registered. Best regards, Stefan

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