October 2012 - Boost-users - lists.boost.org

Intrsuive multisets and stable sorting
by Dan Posluns 18 Oct '12

18 Oct '12

Hi there, I'm attempting to use intrusive associative containers, but it's essential to the application that as I add "equivalent" objects to the multiset that their order is maintained, ie. that the sort is stable. I'm looking at using avl_multiset for its fast retrieve times. I ran an experiment several times over where I added 1000 entries of random numbers from 0-9 that also contained ordering information to a multiset, and that ordering information wound up being preserved, even when I removed some items and added new ones to the initial tree. So that looks promising. If someone were able to confirm the results of my experiment it would be better, though. Best would be documentation that lists which multiset implementations are stable and which aren't, but I can't find such a thing in the docs. Thanks, Dan.

3 5

[fusion] making an inner struct boost fusion compatible?
by Oswin Krause 17 Oct '12

17 Oct '12

Hi list, I have the following problem: template<class T, class U, class V> struct MyType{ struct nested{ typename MetaFunc<T>::type a; typename MetaFunc<U>::type b; typename MetaFunc<V>::type c; }; }; now this inner struct must be a boost fusion compatible random access sequence. The examples cover only structs on namespace lvel, how can i handle this way? Later these classes will be generated by a macro automatically so even dirty hacks are allowed :). But i don't want to clatter the namespace by pulling nested outside of the class. Is there an easy way or do i have to write the necessary mtafunctions to make this possible? Greetings, Oswin

3 8

undefined reference to boost::hash_range
by Michael Dickey 17 Oct '12

17 Oct '12

I ran into an odd error with 1.51.0 when compiling the following code using gcc 4.4.6 on rhel6/64 with -fkeep-inline-functions (using this flag for debug builds): #include <boost/filesystem/path.hpp> int main(void) { boost::filesystem::path a_path; return 0; } The linker complains about an undefined reference to boost::hash_range<> referenced from boost/filesystem/path.hpp. Looking at path.hpp I can see it includes hash_fwd.hpp not hash.hpp. This is despite the fact that it's actually using various hash methods inside the header file (including hash_range). When I change it to use hash.hpp instead, the linker error goes away. Should path.hpp really use hash.hpp instead, or is this some weird compiler issue, or something else entirely? I figured someone here would know =) Thanks, -Mike

1 0

[Phoenix] Restricting actors
by paul Fultz 17 Oct '12

17 Oct '12

Hello, I was wondering if there was a way to restrict actors(rather than extend them). That is, I would like to create an actor that only supports say the `+` operator. Right now, if I inherit from `actor` it will bring in all the C++ operators. Is there a different base class I can inherit from? Or is it even possible? Thanks, Paul

1 0

IOStream - expose MemoryInputStream buffer and it's size
by Gheorghe Marinca 16 Oct '12

16 Oct '12

Hy, I want to implement a boost iostream MemoryInputStream like this: class MemoryInputDevice : public boost::iostreams::source { public: MemoryInputDevice(char* buffer, size_t size): buffer(buffer), size(size), pos(0) { } std::streamsize read(char* s, std::streamsize n); private: char* buffer; std::streamsize size; std::streamsize pos; }; typedef boost::iostreams::stream<MemoryInputDevice> MemoryInputStream; I want at the same time to expose to clients beside the istream interface a way for the client to get the pointer to the internal buffer and it's length (getting the pointer to the internal buffer could be questionable but in order not to copy buffer around there are cases where a parser of mine needs all the content of the internal buffer and I don't want to copy that around before passing it to the parser) Is therea way for MemoryInputStream user to get that info ? I was thinking at the stream->rdbuffer() method but it seems it does not give me what I want. Thanks in advance for your help -Ghita

2 1

How to do line clipping using boost polygon?
by jian hu 16 Oct '12

16 Oct '12

Hi, I'm trying to clip line segments using boost polygon. Boost polygon does not provide public interface but somehow I find the function validate_scan(), which can do the line clipping. My input are two segments < (10, 10), (10, 2), 0 > < ( 6, 7), (11, 2), 1 > The numbers in the brackets are coordinates of two end points of the segments and the number after it is the segment id. So it looks like this. The result I expect should be four segments, which are the result of intersection <(10,10), (10,3), 0> <(10,3), (10,2), 0> <(6,7 ), (10,3), 1> <(10,3), (11, 2), 1> However, the <(10,3), (11,2), 1> segment is replace by two segments, which are <(10,3), (10,2), 1> and <(10,2), (11,2), 1>. Can someone tell me what happened? Replacing the segment with the other two are not right behavior. Thank you very much. -- Jian Hu

1 0

[boost.numeric] Poor Performance of numeric_cast
by Tang Jiang Jun 16 Oct '12

16 Oct '12

Hi, I have run a performance testing for numeric_cast recently, and found that the result was really unexpected bad, although the document mentioned that it will be no overhead if overflows don't happen. Could somebody please help me to verify this testing? If this is true, I doubt whether I should use numeric_cast in the production code. Here is my testing code and result. *#include <boost/numeric/conversion/cast.hpp> #include <boost/format.hpp> #include <boost/cstdint.hpp> #include <boost/chrono.hpp> #include <iostream> using namespace std; using namespace boost; using namespace boost::numeric; using namespace boost::chrono; int main() { const static int32_t COUNT = 1000000; high_resolution_clock::time_point start; start = high_resolution_clock::now(); for( int32_t n = 0; n < COUNT; ++n ) { int32_t i32 = 123; int16_t i16 = i32; } cout << format("Native Integer Cast: %1%\n") % ( ( high_resolution_clock::now() - start ) / COUNT ); start = high_resolution_clock::now(); for( int32_t n = 0; n < COUNT; ++n ) { try { int32_t i32 = 100; int16_t i16 = numeric_cast< int16_t >( i32 ); } catch( const bad_numeric_cast& e ) { cout << e.what() << endl; } } cout << format("Boost Integer Cast: %1%\n") % ( ( high_resolution_clock::now() - start ) / COUNT ); start = high_resolution_clock::now(); for( int32_t n = 0; n < COUNT; ++n ) { float f = 100.0f; int32_t i = static_cast< int32_t >( f ); } cout << format("Native Floating-Integer Cast: %1%\n") % ( ( high_resolution_clock::now() - start ) / COUNT ); start = high_resolution_clock::now(); for( int32_t n = 0; n < COUNT; ++n ) { try { float f = 123.0f; int32_t i = numeric_cast< int32_t >( f ); } catch( const bad_numeric_cast& e ) { cout << e.what() << endl; } } cout << format("Boost Floating-Integer Cast: %1%\n") % ( ( high_resolution_clock::now() - start ) / COUNT ); start = high_resolution_clock::now(); for( int32_t n = 0; n < COUNT; ++n ) { int32_t i = 132; float f = static_cast< float >( i ); } cout << format("Native Integer-Floating Cast: %1%\n") % ( ( high_resolution_clock::now() - start ) / COUNT ); start = high_resolution_clock::now(); for( int32_t n = 0; n < COUNT; ++n ) { try { int32_t i = 128; float f = numeric_cast< float >( i ); } catch( const bad_numeric_cast& e ) { cout << e.what() << endl; } } cout << format("Boost Integer-Floating Cast: %1%\n") % ( ( high_resolution_clock::now() - start ) / COUNT ); return 0; };* Result: *Native Integer Cast: 3 nanoseconds Boost Integer Cast: 311 nanoseconds Native Floating-Integer Cast: 4 nanoseconds Boost Floating-Integer Cast: 430 nanoseconds Native Integer-Floating Cast: 2 nanoseconds Boost Integer-Floating Cast: 106 nanoseconds*

4 12

[asio] Custom asynchronous service
by Acer Yang 16 Oct '12

16 Oct '12

Hi all, I would like to adapt my class to asio for offering async_do_something(param, callback) interfaces. After reading examples presented in asio/examples/services/ and some asio source code. I found the example does not do invoke callback stuff (e.g. asio/examples/service/logger_service.cpp). In case of asio source code, there are classes such as detail::wait_handler<> that wrap user callbacks for invoked later. Should I use these wrappers in my service implementation if I hope to comfort the strand design of asio? Do I have other choices? All suggestions are welcome. Best wishes, Acer.

2 3

boost test, valgrind errors in release mode
by Avi Bahra 15 Oct '12

15 Oct '12

I have several libs that I am testing with boost unit test Valgrind shows mismatched free/delete Using opensuse113, gcc 4.5, boost 1.47 I am bit perplexed because: a/ The valgrind errors only show up with release mode. b/ The valgrind errors suggest problems with unit test, but I have dozen or so separate unit tests, however, errors only shows up on one of the tests. has anyone come across these errors, and suggestion of how to overcome. + valgrind --leak-check=full --show-reachable=yes ACore/bin/gcc-4.5/release/coretest ==25529== Memcheck, a memory error detector ==25529== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al. ==25529== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info ==25529== Command: ACore/bin/gcc-4.5/release/coretest ==25529== ==25529== Mismatched free() / delete / delete [] ==25529== at 0x4C25F7B: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==25529== by 0x4D25CA: _ZNSt6vectorISt4pairIN5boost9unit_test13basic_cstringIKcEES5_ESaIS6_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS6_S8_EERKS6_.clone.57 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4D3B09: _Z41__static_initialization_and_destruction_0ii.clone.0 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x50EEF5: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4265AA: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x511D22F: ??? (in /usr/lib64/libstdc++.so.6.0.14) ==25529== by 0x50EE74: __libc_csu_init (elf-init.c:120) ==25529== by 0x55C1B0F: (below main) (in /lib64/libc-2.11.2.so) ==25529== Address 0x5904c60 is 0 bytes inside a block of size 32 alloc'd ==25529== at 0x4C267D0: operator new(unsigned long) (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==25529== by 0x4D2561: _ZNSt6vectorISt4pairIN5boost9unit_test13basic_cstringIKcEES5_ESaIS6_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS6_S8_EERKS6_.clone.57 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4D2F62: _Z41__static_initialization_and_destruction_0ii.clone.0 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x50EEF5: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4265AA: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x511D22F: ??? (in /usr/lib64/libstdc++.so.6.0.14) ==25529== by 0x50EE74: __libc_csu_init (elf-init.c:120) ==25529== by 0x55C1B0F: (below main) (in /lib64/libc-2.11.2.so) ==25529== ==25529== Mismatched free() / delete / delete [] ==25529== at 0x4C25F7B: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==25529== by 0x4D25CA: _ZNSt6vectorISt4pairIN5boost9unit_test13basic_cstringIKcEES5_ESaIS6_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS6_S8_EERKS6_.clone.57 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4D3B29: _Z41__static_initialization_and_destruction_0ii.clone.0 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x50EEF5: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4265AA: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x511D22F: ??? (in /usr/lib64/libstdc++.so.6.0.14) ==25529== by 0x50EE74: __libc_csu_init (elf-init.c:120) ==25529== by 0x55C1B0F: (below main) (in /lib64/libc-2.11.2.so) ==25529== Address 0x5904cc0 is 0 bytes inside a block of size 64 alloc'd ==25529== at 0x4C267D0: operator new(unsigned long) (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==25529== by 0x4D2561: _ZNSt6vectorISt4pairIN5boost9unit_test13basic_cstringIKcEES5_ESaIS6_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS6_S8_EERKS6_.clone.57 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4D3B09: _Z41__static_initialization_and_destruction_0ii.clone.0 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x50EEF5: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4265AA: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x511D22F: ??? (in /usr/lib64/libstdc++.so.6.0.14) ==25529== by 0x50EE74: __libc_csu_init (elf-init.c:120) ==25529== by 0x55C1B0F: (below main) (in /lib64/libc-2.11.2.so) ==25529== ==25529== Mismatched free() / delete / delete [] ==25529== at 0x4C25F7B: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==25529== by 0x4D25CA: _ZNSt6vectorISt4pairIN5boost9unit_test13basic_cstringIKcEES5_ESaIS6_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS6_S8_EERKS6_.clone.57 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4D3B69: _Z41__static_initialization_and_destruction_0ii.clone.0 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x50EEF5: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4265AA: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x511D22F: ??? (in /usr/lib64/libstdc++.so.6.0.14) ==25529== by 0x50EE74: __libc_csu_init (elf-init.c:120) ==25529== by 0x55C1B0F: (below main) (in /lib64/libc-2.11.2.so) ==25529== Address 0x5904d40 is 0 bytes inside a block of size 128 alloc'd ==25529== at 0x4C267D0: operator new(unsigned long) (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==25529== by 0x4D2561: _ZNSt6vectorISt4pairIN5boost9unit_test13basic_cstringIKcEES5_ESaIS6_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS6_S8_EERKS6_.clone.57 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4D3B29: _Z41__static_initialization_and_destruction_0ii.clone.0 (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x50EEF5: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x4265AA: ??? (in /var/tmp/ma0/clientRoot/workspace/MyProject/ACore/bin/gcc-4.5/release/coretest) ==25529== by 0x511D22F: ??? (in /usr/lib64/libstdc++.so.6.0.14) ==25529== by 0x50EE74: __libc_csu_init (elf-init.c:120) ==25529== by 0x55C1B0F: (below main) (in /lib64/libc-2.11.2.so) ==25529== Best regards, Ta, Avi

1 0

Error : Unable to load Jamfile
by Baba Prasad 15 Oct '12

15 Oct '12

Dear all, I am able to installed boost_1_49_0 in my linux fedora 16 OS and then I exported the bjam file and also BOOST_ROOT. I copied two files into my code directory and name of these files are user-config.jam and boost-build.jam and content of these files as shown bellow. when I try to compile the my code it is giving the following error. Please any one get me out of this problem. my user-config.jam file contains using boost : 1.49 : /home/odtone/Documents/mihf/boost_1_49_0 ; using gcc : : : <cxxflags>-glib-2.0 -dbus-glib-1 : <libs>-glib-2.0 -dbus-glib-1 ; using gcc : : : <compileflags>-glib-2.0 -dbus-glib-1 : <libs>-glib-2.0 -dbus-glib-1 ; my boost-build.jam file contains boost-build /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2 ; Even though I feel everything looks ok still I am getting following error. Please could you help me . and also I did export bjam also export PATH=$PATH/home/odtone/Documents/mihf/boost_1_49_0/ export BOOST_ROOT=:/home/odtone/Documents/mihf/boost_1_49_0/ [root@odtone-aam odtone]# bjam /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/build/project.jam:267: in find-jamfile from module project error: Unable to load Jamfile. error: Could not find a Jamfile in directory ':/home/odtone/Documents/mihf/boost_1_49_0/:/home/odtone/Documents/mihf/boost_1_49_0'. error: Attempted to find it with pattern '[Bb]uild.jam[Jj]amfile.v2[Jj]amfile[Jj]amfile.jam )'. error: Please consult the documentation at 'http://www.boost.org'. /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/build/project.jam:288: in load-jamfile from module project /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/build/project.jam:62: in project.load from module project /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/build/project.jam:766: in project.use from module project /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/build/project.jam:89: in load-used-projects from module project /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/build/project.jam:73: in load from module project /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/build/project.jam:168: in project.find from module project /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/build-system.jam:570: in load from module build-system /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/kernel/modules.jam:283: in import from module modules /home/odtone/Documents/mihf/boost_1_49_0/tools/build/v2/kernel/bootstrap.jam:142: in boost-build from module /home/odtone/Documents/mihf/odtone/boost-build.jam:2: in module scope from module Best Regards BaBu -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

3 2

how to use staged 1.51 with installed boost 1.49 with autotools?
by Joost Kraaijeveld 14 Oct '12

14 Oct '12

Hi, I use Debian with Boost 1.49 installed. I want to test my application with 1.51 that is compiled into a stage directory. According to ax_boost_boost.m4: If no path to the installed boost library is given the macro searchs under /usr, /usr/local, /opt and /opt/local and evaluates the $BOOST_ROOT environment variable. How can I use my staged version, as the installed version is found in /usr? TIA -- Groeten, Joost Kraaijeveld Askesis B.V. Molukkenstraat 14 6524NB Nijmegen tel: 024-3888063 / 06-51855277 fax: 024-3608416 web: www.askesis.nl

3 6

Getting undirected graph from directed graph discarding properties
by Philipp Klaus Krause 13 Oct '12

13 Oct '12

I have a directed graph that has some properties, and I want the underlying undirected graph, but don't need the properties there. Assuming G is the directed graph with properties, and G_sym is the undirected without them, up until boost 1.50 I used: boost::copy_graph(G, G_sym); But as of boost 1.51 and 1.52 this gives an error due to the properties. Is there an easy way to do what I want to do in boost, and if yes, how? Philipp g++ -pipe -ggdb -g -O2 -Wall -Wno-parentheses -I /tmp/boost_1_52_0_beta1 -I /tmp/boost_1_52_0_beta1 -I. -I. -I././support/util -I. -I /tmp/boost_1_52_0_beta1 -I. -I.. -I./../support/util -I. -I. -c -o SDCClospre.o SDCClospre.cc In file included from SDCClospre.hpp:26:0, from SDCClospre.cc:24: SDCCtree_dec.hpp: In instantiation of ‘void tree_decomposition_from_elimination_ordering(T_t&, const std::list<unsigned int>&, const G_t&) [with T_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, tree_dec_lospre_node>; G_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>]’: SDCCtree_dec.hpp:274:3: required from ‘void thorup_tree_decomposition(T_t&, const G_t&) [with T_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, tree_dec_lospre_node>; G_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>]’ SDCClospre.cc:289:68: required from here SDCCtree_dec.hpp:260:3: error: no match for ‘operator=’ in ‘G_sym = G’ SDCCtree_dec.hpp:260:3: note: candidate is: In file included from /tmp/boost_1_52_0_beta1/boost/graph/graphviz.hpp:24:0, from SDCClospre.hpp:22, from SDCClospre.cc:24: /tmp/boost_1_52_0_beta1/boost/graph/adjacency_list.hpp:313:21: note: boost::adjacency_list<OutEdgeListS, VertexListS, DirectedS, VertexProperty, EdgeProperty, GraphProperty, EdgeListS>& boost::adjacency_list<OutEdgeListS, VertexListS, DirectedS, VertexProperty, EdgeProperty, GraphProperty, EdgeListS>::operator=(const boost::adjacency_list<OutEdgeListS, VertexListS, DirectedS, VertexProperty, EdgeProperty, GraphProperty, EdgeListS>&) [with OutEdgeListS = boost::vecS; VertexListS = boost::vecS; DirectedS = boost::undirectedS; VertexProperty = boost::no_property; EdgeProperty = boost::no_property; GraphProperty = boost::no_property; EdgeListS = boost::listS; boost::adjacency_list<OutEdgeListS, VertexListS, DirectedS, VertexProperty, EdgeProperty, GraphProperty, EdgeListS> = boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS>] /tmp/boost_1_52_0_beta1/boost/graph/adjacency_list.hpp:313:21: note: no known conversion for argument 1 from ‘const boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>’ to ‘const boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS>&’ In file included from /tmp/boost_1_52_0_beta1/boost/graph/graphviz.hpp:19:0, from SDCClospre.hpp:22, from SDCClospre.cc:24: /tmp/boost_1_52_0_beta1/boost/property_map/property_map.hpp: In instantiation of ‘void boost::put(const boost::put_get_helper<Reference, PropertyMap>&, K, const V&) [with PropertyMap = boost::vec_adj_list_vertex_all_properties_map<boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>, boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>*, boost::no_property, boost::no_property&>; Reference = boost::no_property&; K = long unsigned int; V = cfg_lospre_node]’: /tmp/boost_1_52_0_beta1/boost/graph/copy.hpp:129:9: required from ‘void boost::detail::vertex_copier<Graph1, Graph2>::operator()(const Vertex1&, Vertex2&) const [with Vertex1 = long unsigned int; Vertex2 = long unsigned int; Graph1 = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>; Graph2 = boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>]’ /tmp/boost_1_52_0_beta1/boost/graph/copy.hpp:164:11: required from ‘static void boost::detail::copy_graph_impl<0>::apply(const Graph&, MutableGraph&, CopyVertex, CopyEdge, Orig2CopyVertexIndexMap, IndexMap) [with Graph = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>; MutableGraph = boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>; CopyVertex = boost::detail::vertex_copier<boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>, boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS> >; CopyEdge = boost::detail::edge_copier<boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>, boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS> >; IndexMap = boost::vec_adj_list_vertex_id_map<cfg_lospre_node, long unsigned int>; Orig2CopyVertexIndexMap = boost::iterator_property_map<__gnu_cxx::__normal_iterator<long unsigned int*, std::vector<long unsigned int, std::allocator<long unsigned int> > >, boost::vec_adj_list_vertex_id_map<cfg_lospre_node, long unsigned int>, long unsigned int, long unsigned int&>]’ /tmp/boost_1_52_0_beta1/boost/graph/copy.hpp:348:5: required from ‘void boost::copy_graph(const VertexListGraph&, MutableGraph&) [with VertexListGraph = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>; MutableGraph = boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>]’ SDCCtree_dec.hpp:155:3: required from ‘void thorup_elimination_ordering(l_t&, const G_t&) [with l_t = std::list<unsigned int>; G_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>]’ SDCCtree_dec.hpp:272:3: required from ‘void thorup_tree_decomposition(T_t&, const G_t&) [with T_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, tree_dec_lospre_node>; G_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>]’ SDCClospre.cc:289:68: required from here /tmp/boost_1_52_0_beta1/boost/property_map/property_map.hpp:361:5: error: no match for ‘operator=’ in ‘(&((const boost::vec_adj_list_vertex_all_properties_map<boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>, boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>*, boost::no_property, boost::no_property&>&)pa))->boost::vec_adj_list_vertex_all_properties_map<Graph, GraphPtr, Property, PropertyRef>::operator[]<boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>, boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>*, boost::no_property, boost::no_property&>(k) = v’ /tmp/boost_1_52_0_beta1/boost/property_map/property_map.hpp:361:5: note: candidate is: In file included from /tmp/boost_1_52_0_beta1/boost/graph/graph_traits.hpp:26:0, from /tmp/boost_1_52_0_beta1/boost/graph/graphviz.hpp:21, from SDCClospre.hpp:22, from SDCClospre.cc:24: /tmp/boost_1_52_0_beta1/boost/pending/property.hpp:18:10: note: boost::no_property& boost::no_property::operator=(const boost::no_property&) /tmp/boost_1_52_0_beta1/boost/pending/property.hpp:18:10: note: no known conversion for argument 1 from ‘const cfg_lospre_node’ to ‘const boost::no_property&’ In file included from /tmp/boost_1_52_0_beta1/boost/graph/graphviz.hpp:19:0, from SDCClospre.hpp:22, from SDCClospre.cc:24: /tmp/boost_1_52_0_beta1/boost/property_map/property_map.hpp: In instantiation of ‘void boost::put(const boost::put_get_helper<Reference, PropertyMap>&, K, const V&) [with PropertyMap = boost::adj_list_edge_all_properties_map<boost::directed_tag, boost::no_property, boost::no_property&, boost::no_property*, long unsigned int>; Reference = boost::no_property&; K = boost::detail::edge_desc_impl<boost::directed_tag, long unsigned int>; V = float]’: /tmp/boost_1_52_0_beta1/boost/graph/copy.hpp:109:9: required from ‘void boost::detail::edge_copier<Graph1, Graph2>::operator()(const Edge1&, Edge2&) const [with Edge1 = boost::detail::edge_desc_impl<boost::bidirectional_tag, long unsigned int>; Edge2 = boost::detail::edge_desc_impl<boost::directed_tag, long unsigned int>; Graph1 = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>; Graph2 = boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>]’ /tmp/boost_1_52_0_beta1/boost/graph/copy.hpp:173:11: required from ‘static void boost::detail::copy_graph_impl<0>::apply(const Graph&, MutableGraph&, CopyVertex, CopyEdge, Orig2CopyVertexIndexMap, IndexMap) [with Graph = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>; MutableGraph = boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>; CopyVertex = boost::detail::vertex_copier<boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>, boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS> >; CopyEdge = boost::detail::edge_copier<boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>, boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS> >; IndexMap = boost::vec_adj_list_vertex_id_map<cfg_lospre_node, long unsigned int>; Orig2CopyVertexIndexMap = boost::iterator_property_map<__gnu_cxx::__normal_iterator<long unsigned int*, std::vector<long unsigned int, std::allocator<long unsigned int> > >, boost::vec_adj_list_vertex_id_map<cfg_lospre_node, long unsigned int>, long unsigned int, long unsigned int&>]’ /tmp/boost_1_52_0_beta1/boost/graph/copy.hpp:348:5: required from ‘void boost::copy_graph(const VertexListGraph&, MutableGraph&) [with VertexListGraph = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>; MutableGraph = boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS>]’ SDCCtree_dec.hpp:155:3: required from ‘void thorup_elimination_ordering(l_t&, const G_t&) [with l_t = std::list<unsigned int>; G_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>]’ SDCCtree_dec.hpp:272:3: required from ‘void thorup_tree_decomposition(T_t&, const G_t&) [with T_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, tree_dec_lospre_node>; G_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, cfg_lospre_node, float>]’ SDCClospre.cc:289:68: required from here /tmp/boost_1_52_0_beta1/boost/property_map/property_map.hpp:361:5: error: no match for ‘operator=’ in ‘(&((const boost::adj_list_edge_all_properties_map<boost::directed_tag, boost::no_property, boost::no_property&, boost::no_property*, long unsigned int>&)pa))->boost::adj_list_edge_all_properties_map<Directed, Property, PropRef, PropPtr, Vertex>::operator[]<boost::directed_tag, boost::no_property, boost::no_property&, boost::no_property*, long unsigned int>(k) = v’ /tmp/boost_1_52_0_beta1/boost/property_map/property_map.hpp:361:5: note: candidate is: In file included from /tmp/boost_1_52_0_beta1/boost/graph/graph_traits.hpp:26:0, from /tmp/boost_1_52_0_beta1/boost/graph/graphviz.hpp:21, from SDCClospre.hpp:22, from SDCClospre.cc:24: /tmp/boost_1_52_0_beta1/boost/pending/property.hpp:18:10: note: boost::no_property& boost::no_property::operator=(const boost::no_property&) /tmp/boost_1_52_0_beta1/boost/pending/property.hpp:18:10: note: no known conversion for argument 1 from ‘const float’ to ‘const boost::no_property&’

2 3

[1.52.0] Beta1 release available
by Daniel James 13 Oct '12

13 Oct '12

Boost release 1.52.0 beta 1 is now available from SourceForge See https://sourceforge.net/projects/boost/files/boost/1.52.0.beta.1/ This release contains numerous enhancements and bug fixes for existing libraries. For details of what's in the release, see http://www.boost.org/users/history/version_1_52_0.html. Please download the beta, give it a try, and report any problems you encounter. Thanks, -- The Boost Release Team

3 2

[BGL] How do I iterate over a labeled graph?
by eric 12 Oct '12

12 Oct '12

I am trying to iterate over my labeled_graph like so: struct Vertex { std::string vertType; }; typedef Graph::vertex_iterator VertexIter; VertexIter vertexIter, vertexEnd; for (tie(vertexIter, vertexEnd) = vertices(graph); vertexIter != vertexEnd; vertexIter++) { std::string vertexType = graph[*vertexIter].vertType; } However, I get a compiler error saying that graph has no operator [] that accepts an unsigned int. How should I be doing what I'm trying to do? -- View this message in context: http://boost.2283326.n4.nabble.com/BGL-How-do-I-iterate-over-a-labeled-grap… Sent from the Boost - Users mailing list archive at Nabble.com.

2 4

[Matrix] - Complie time error on Sun Solaris.
by Jagpreet Athwal 12 Oct '12

12 Oct '12

I am trying to compile the below example program listed on boost.org: #include <boost/numeric/ublas/matrix.hpp> #include <boost/numeric/ublas/io.hpp> int main () { using namespace boost::numeric::ublas; matrix<double> m (3, 3); for (unsigned i = 0; i < m.size1 (); ++ i) for (unsigned j = 0; j < m.size2 (); ++ j) m (i, j) = 3 * i + j; std::cout << m << std::endl; } When I compile it, I get these errors. Could anyone please help me with getting rid of these? /boost/numeric/ublas/storage.hpp", line 1046: Error: Too few arguments for template std::reverse_iterator<boost::numeric::ublas::basic_range<boost::numeric::ublas::Z, boost::numeric::ublas::D>::const_iterator>. /boost/numeric/ublas/storage.hpp", line 1076: Where: While specializing "boost::numeric::ublas::basic_range<boost::numeric::ublas::Z, boost::numeric::ublas::D>". /boost/numeric/ublas/storage.hpp", line 1076: Where: Specialized in non-template code. /boost/numeric/ublas/storage.hpp", line 1265: Error: Too few arguments for template std::reverse_iterator<boost::numeric::ublas::basic_slice<boost::numeric::ublas::Z, boost::numeric::ublas::D>::const_iterator>. /boost/numeric/ublas/storage.hpp", line 1296: Where: While specializing "boost::numeric::ublas::basic_slice<boost::numeric::ublas::Z, boost::numeric::ublas::D>". /boost/numeric/ublas/storage.hpp", line 1296: Where: Specialized in non-template code. /boost/numeric/ublas/storage.hpp", line 1525: Error: Too few arguments for template std::reverse_iterator<boost::numeric::ublas::indirect_array<boost::numeric::ublas::A>::const_iterator>. /boost/numeric/ublas/storage.hpp", line 1558: Where: While specializing "boost::numeric::ublas::indirect_array<boost::numeric::ublas::A>". /boost/numeric/ublas/storage.hpp", line 1558: Where: Specialized in non-template code. /boost/numeric/ublas/storage.hpp", line 246: Error: Too few arguments for template std::reverse_iterator<const boost::numeric::ublas::T*>. /boost/numeric/ublas/fwd.hpp", line 126: Where: While specializing "boost::numeric::ublas::unbounded_array<boost::numeric::ublas::T, boost::numeric::ublas::ALLOC>". /boost/numeric/ublas/fwd.hpp", line 126: Where: Specialized in non-template code. /boost/numeric/ublas/storage.hpp", line 247: Error: Too few arguments for template std::reverse_iterator<boost::numeric::ublas::T*>. /boost/numeric/ublas/fwd.hpp", line 126: Where: While specializing "boost::numeric::ublas::unbounded_array<boost::numeric::ublas::T, boost::numeric::ublas::ALLOC>". /boost/numeric/ublas/fwd.hpp", line 126: Where: Specialized in non-template code. 5 Error(s) detected. Thanks, Jag

2 1

Compile errors under VS 2012 using Boost 1.44
by Boucher, Michael D 12 Oct '12

12 Oct '12

Hi folks, I'm upgrading a old project, first created using Visual Studio 2008, to Visual Studio 2012. This project uses the boost libraries to implement regular expressions, and a few other things. When I try to compile, I get somewhere north of 2000 errors, all stemming from iterator_adaptor.hpp. Here's a sample... ---------------------- error C2039: 'reference' : is not a member of '`global namespace'' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 311 error C2065: 'add_reference' : undeclared identifier boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 215 error C2275: 'Value' : illegal use of this type as an expression boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 215 error C2974: 'boost::mpl::eval_if' : invalid template argument for 'F2', type expected boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 215 error C3203: 'eval_if' : unspecialized class template can't be used as a template argument for template parameter 'DefaultNullaryFn', expected a real type boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 216 error C2955: 'boost::mpl::eval_if' : use of class template requires template argument list boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 216 error C3203: 'ia_dflt_help' : unspecialized class template can't be used as a template argument for template parameter 'Reference', expected a real type boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 217 error C2955: 'boost::detail::ia_dflt_help' : use of class template requires template argument list boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 217 error C2039: 'type' : is not a member of 'boost::iterator_facade<Derived,Value,CategoryOrTraversal,Reference>' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 217 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 219 error C2838: 'type' : illegal qualified name in member declaration boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 222 error C2143: syntax error : missing ';' before '>' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 222 error C2226: syntax error : unexpected type 'boost::detail::ia_dflt_help<Difference,boost::iterator_difference<I2>>::type' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 222 error C2238: unexpected token(s) preceding ';' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 223 error C2516: 'boost::detail::iterator_adaptor_base<Derived,Base,Value,Traversal,Reference,Difference>::type' : is not a legal base class boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 271 error C2825: 'boost::iterator_adaptor<Derived,Base,Value,Traversal,Reference>::super_t': must be a class or namespace when followed by '::' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 311 error C2146: syntax error : missing ';' before identifier 'dereference' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 311 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 312 warning C4183: 'dereference': missing return type; assumed to be a member function returning 'int' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 312 error C2825: 'boost::iterator_adaptor<Derived,Base,Value,Traversal,Reference>::super_t': must be a class or namespace when followed by '::' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 327 error C2039: 'iterator_category' : is not a member of '`global namespace'' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 327 error C2146: syntax error : missing ',' before identifier 'iterator_category' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 328 error C2146: syntax error : missing ';' before identifier 'my_traversal' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 328 error C2838: 'type' : illegal qualified name in member declaration boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 328 error C2955: 'boost::iterator_category' : use of class template requires template argument list boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 328 error C2955: 'boost::iterator_category_to_traversal' : use of class template requires template argument list boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 328 error C3254: 'boost::iterator_adaptor<Derived,Base,Value,Traversal,Reference>' : class contains explicit override 'type' but does not derive from an interface that contains the function declaration boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 328 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 328 error C2825: 'boost::iterator_adaptor<Derived,Base,Value,Traversal,Reference>::super_t': must be a class or namespace when followed by '::' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 333 error C2039: 'difference_type' : is not a member of '`global namespace'' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 333 error C2146: syntax error : missing ',' before identifier 'n' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 333 error C2825: 'boost::iterator_adaptor<Derived,Base,Value,Traversal,Reference>::super_t': must be a class or namespace when followed by '::' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 350 error C2039: 'difference_type' : is not a member of '`global namespace'' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 350 error C2146: syntax error : missing ';' before identifier 'distance_to' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 350 error C2238: unexpected token(s) preceding ';' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 350 error C2143: syntax error : missing ';' before '<end Parse>' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 350 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 350 warning C4183: 'distance_to': missing return type; assumed to be a member function returning 'int' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 350 error C2334: unexpected token(s) preceding ':'; skipping apparent function body boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 363 error C2760: syntax error : expected '{' not ';' boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 364 error C1075: end of file found before the left brace '{' at 'pstsdk\0.3.0\include\pstsdk\ndb\node.h(39)' was matched boost\1.44.0\include\boost\iterator\iterator_adaptor.hpp 365 ---------------- The project builds without any errors under VS 2008. Is 1.44 too old to use in VX 2012? I know that Microsoft has changed some of the underlying libraries, so do I need 1.51? Thanx for any help! Mike ---- Michael D Boucher Connected development Autonomy, an HP Company Tel: 508-808-7590 E-mail: michael-d.boucher(a)hp.com<mailto:michael-d.boucher@hp.com> Visit www.autonomy.com<http://www.autonomy.com/>

3 3

[Pool] Use singleton_pool in struct
by Claude 12 Oct '12

12 Oct '12

Hi! I have a problem with singleton_pool when I use it into a struct. I think that this problem is my bad knowledge of C++ and not a problem of boost pool. #include <iostream> #include <boost/pool/pool_alloc.hpp> using namespace std; struct data { int a,b; char name[50]; }; struct MyOrderTag {}; typedef boost::singleton_pool<MyOrderTag,sizeof(data)> poolMemory; struct myStruct { struct MyOrderTag {}; typedef boost::singleton_pool<MyOrderTag,sizeof(data)> poolMemory; }; int main() { data *d = (data*)poolMemory::malloc(); //This is ok myStruct ms; // data *d1 = (data*)ms.poolMemory::malloc(); //Error! d->a = 2; poolMemory::release_memory(); return 0; } I obtain a compiler error on row: data *d1 = (data*)ms.poolMemory::malloc(); The poolMemory in struct is only a typedef and not a struct field. How can I use a singleton_pool into a struct? -- View this message in context: http://boost.2283326.n4.nabble.com/Pool-Use-singleton-pool-in-struct-tp4636… Sent from the Boost - Users mailing list archive at Nabble.com.

2 3

[coroutine] new versions
by Oliver Kowalke 12 Oct '12

12 Oct '12

I've uploaded two re-factored versions - I think most of the suggestions from the review are implemented (namespace is not corrected and documentation not updated yet). 1.) http://ok73.ok.funpic.de/boost-coroutine-self.zip 2.) http://ok73.ok.funpic.de/boost-coroutine-coro.zip Version 1) requires that coroutine-fn has only one argument == coroutine<>::self_t. Other arguments are accessed via coroutine<>::self_t::get< int >() and results via coroutine<>::get(). interface provides input/output iterators. typedef coroutine< int( int, int> > coro_t; int fn( coro_t::self_t & c) { int x = c.get< 0 >(); int y = c.get< 1 >(); c.yield( x +y); ... } coro_t coro( fn); int res = c( 3, 7).get(); Version 2) requires that coroutine-fn has only one argument too == coroutine<> with inverted signature. Other arguments are access via coroutine<>::get(). interface provides input/output iterators. typedef coroutine< int( int, int> > coro_t; int fn( coroutine< tuple< int, int >( int) & c) { int x = c.get().get< 0 >(); int y = c.get().get< 1 >(); c( x +y); ... } coro_t coro( fn); int res = c( 3, 7).get(); Both implementations are not optimized - I think we should get a small and clean interface first. Comments? regards, Oliver

3 4

[interprocess] error sending message
by Ian Esten 12 Oct '12

12 Oct '12

Hi all, I've got a problem using boost::interprocess::memory_queue on Windows - when trying to call send(), I get a null pointer returned by free_msg. This is because there is an offset_ptr with an offset of 1 at the requested location, causing null to be returned. An exception is then thrown with the message "boost::interprocess::message_queue corrupted". Here is a brief summary of my two applications: Application 1: - a Windows service - creates two message queues, messagesToApplication and messagesToService - creates a thread that waits for messages in messagesToService Application 2: - a Windows application - opens the two message queues, with open_only. - tries to send a message to Application 1, the Windows service after it opens the message queues. Everything works right up until application 2 tries to send a message via messagesToService. I haven't yet been able to identify why the offset_ptr has an offset of 1. If anybody has any suggestions as to what I might be doing wrong, I'd very much appreciate it! Thanks, Ian

2 2

BOOST_FOREACH prevent 100% code coverage.
by Marcin Zawadzki 12 Oct '12

12 Oct '12

Hi, I'm using BOOST_FOREACH in my code. And because it's macro so the whole code behind the macro is inserted in place where it's used. So finally when generating code coverage using gcc/gcov for my file it says that I have not covered branches in line with BOOST_FOREACH. And the question is - is it possible to somehow exclude BOOST_FOREACH form coverage results? Thanks, Marcin

2 1

Get patch to boost/property_tree/detail/json_parser_write.hpp included in release?
by Shane Turner 11 Oct '12

11 Oct '12

Is there any chance that patch to boost/property_tree/detail/json_parser_write.hpp provided in https://svn.boost.org/trac/boost/ticket/5598 could be included in the latest release? It would save me from having to manage the patch in our development environment. Thanks, Shane Turner -- Shane Turner Senior Software Developer phone +1 (902) 406--8375 x1008 email Shane.Turner(a)NewPace.ca <mailto:Shane.Turner@newpace.ca> aim <aim:GoIm?screenname=Shane.Turner@newpace.ca>/msn <msnim:chat?contact=Shane.Turner@newpace.ca> Shane.Turner(a)NewPace.ca <aim:GoIm?screenname=Shane.Turner@newpace.ca> skype saturnjct <skype:saturnjct>

1 0

[smart_ptr] forward instead of including shared_ptr.hpp
by Rune Lund Olesen 11 Oct '12

11 Oct '12

Hello all Anyone got an opinion on this. I looked in boost, and there doesn't seem to be forwards for this. Suppose I am writing my .h file, instead of including shared_ptr.hpp i could just forward it using the following: namespace boost { template <class T> class smart_ptr<T>; } My concern is compilation time, as im going to do this in 1000+ .h files. If, in the user code, the function returning smart_ptr is not used, this could save some compilation time, but then again is that enough to justify a forward ? Regards Rune

1 0

Re: [Boost-users] [CMake] [boost][b2] Differenciate 32bit and 64 bit binaries when using CMake.
by Klaim - Joël Lamotte 11 Oct '12

11 Oct '12

Júlio Hoffimann said: > > I don't know if i understood correctly, but you can set the library > directory by hand, please refer to > /usr/share/cmake-<version>/Modules/FindBoost.cmake, in particular the > variable BOOST_LIBRARYDIR. On Thu, Oct 11, 2012 at 1:29 PM, Miller, Frank <FMiller(a)sjm.com> wrote: > A simple solution would be to install only the 64bit version of boost > into a new directory and change the environment variable to point there. > Then FindBoost will only be able to see the version you want. > Thanks, this will solve my immediate problem, but it don't solve it in general. (I will use it though, so thanks) I can't guarantee where the boost libraries are installed for other developers of my project, that's why I use FindBoost. My current understanding is that boost don't have a specific default lib dir for different address models, which is the source of the problem as FindBoost script can't rely on a protocol to find these lib files. Am I correct? Joel Lamotte

1 0

[boost][CMake][b2] Differenciate 32bit and 64 bit binaries when using CMake.
by Klaim - Joël Lamotte 11 Oct '12

11 Oct '12

I am having a problem with b2 on Windows using Visual Studio (2010 & 2012 but it is irrelevant): Until now I was building boost with b2 in a way that would first build 32 bit version in the default library directory, then the 64bit version in lib/64 . I wasn't using the 64bit version until this morning so I didn't get any problem whatever my use of boost was. I often use Cmake these days and I set the boost environment variables for FindBoost CMake script to find it. My problem is that I'm trying now to use the 64 bit version now and CMake FindBoost script will only find the 32 bit version. CMake correctly assume that the library files in the lib directory are the one to use, however it have no apparent way to find if it is for 64 or 32 bit. Now I'm not sure how to fix this. I see two solutions but I don't see how to apply them: 1. make b2 generate lib and dll files with an additional indication on if it's 64 or 32 bit address model. I didn't find such option in b2 --help so I assume that it is not possible? 2. find a way for CMake FindBoost to automatically find the 64 bit binaries instead of the 32 bit binaris. I don't see a clear solution to achieve this, because it depends a lot on how boost have been compiled. Note: I don't want to use a default boost installation, I want to use my custom build. Any advice on how I should proceed? Thanks for your patience. Joel Lamotte

2 1

[boost::filesystem] Getting the uid or gid of a file
by Avishay Orpaz 11 Oct '12

11 Oct '12

The filesystem library does not include any function to access the uid and gid of a file. Is there other way than calling the native stat()? Avishay

1 0