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[Foreach] Trouble iterating over Boost.MultiIndex containers
by Eelis van der Weegen 09 Mar '05

09 Mar '05

I'm having trouble using BOOST_FOREACH to iterate over Boost.MultiIndex containers. I've attached a testcase, which fails to compile because of what looks like an ADL collision between range_iterator's end() and boost::mpl::end. I'm using GCC 3.4.2 with foreach.hpp revision 1.22 from the sandbox. Others have reported that GCC 4.0.0 20050130 is also affected. (I'm aware that BOOST_FOREACH isn't part of Boost yet, but it's in the review queue so I thought posting this here was appropriate.) Regards, Eelis #include <boost/multi_index/sequenced_index.hpp> #include <boost/multi_index_container.hpp> #include <boost/foreach.hpp> namespace mi = boost::multi_index; typedef boost::multi_index_container<int, mi::indexed_by<mi::sequenced<> > > C; void f (C const & c) { for (C::const_iterator i = c.begin(); i != c.end(); ++i) { int r = *i; } // ok BOOST_FOREACH(int r, c) {} // errors }

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boost::bind problems with __cdecl and MSVC
by Daniel Boelzle 09 Mar '05

09 Mar '05

Hello, I have problems using wonderful boost::bind with __cdecl member functions like the following: #include <boost/bind.hpp> struct S { void __cdecl foo( int ); }; void bar() { S s; int const n = 5; boost::bind( &S::foo, &s, _1 )( n ); } ... error C2825: 'F::result_type': cannot form a qualified name ... I am using MSVC Version 13.10.3077 and boost 1.32.0. I know there is already a way to use stdcall, so does anybody see a solution for __cdecl? thanks for any help, regards, --Daniel

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[filesystem] VC 8.0, AMD64
by Cory Nelson 09 Mar '05

09 Mar '05

I'm using the March 2005 CTP beta of VS2005, and building for AMD64. I'm getting these errors with filesystem (fresh from CVS): boost\config\abi_prefix.hpp(19) : error C2220: warning treated as error - no 'object' file generated boost\config\abi_prefix.hpp(19) : warning C4103: 'boost\config\abi_prefix.hpp' : alignment changed after including header, may be due to missing #pragma pack(pop) boost\filesystem\path.hpp(20) : warning C4103: 'boost\filesystem\path.hpp' : alignment changed after including header, may be due to missing #pragma pack(pop) boost\config\abi_suffix.hpp(20) : warning C4103: 'boost\config\abi_suffix.hpp' : alignment changed after including header, may be due to missing #pragma pack(pop) boost\filesystem\path.hpp(170) : warning C4103: 'boost\filesystem\path.hpp' : alignment changed after including header, may be due to missing #pragma pack(pop) boost\config\abi_prefix.hpp(19) : warning C4103: 'boost\config\abi_prefix.hpp' : alignment changed after including header, may be due to missing #pragma pack(pop) boost\filesystem\fstream.hpp(21) : warning C4103: 'boost\filesystem\fstream.hpp' : alignment changed after including header, may be due to missing #pragma pack(pop) boost\config\abi_suffix.hpp(20) : warning C4103: 'boost\config\abi_suffix.hpp' : alignment changed after including header, may be due to missing #pragma pack(pop) boost\filesystem\fstream.hpp(190) : warning C4103: 'boost\filesystem\fstream.hpp' : alignment changed after including header, may be due to missing #pragma pack(pop) -- Cory Nelson http://www.int64.org

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Re: Re: boost::program options question. Implicit()
by Alexis H. Rivera-Rios 09 Mar '05

09 Mar '05

>I think it's the library. But in any case, I plan to >remove the >'implicit' >flag in 1.33. Why do you want it? What about: > > desc.add_options() > ("debug", bool_option(), "enable debugging") > >? >- Volodya Why do I wanted? No special reason, I was learning to use the library and got stuck on that one. The code didn't do what the documentation said it should do. I wasn't aware of the bool_option. Will that let me do something like myprogram --debug or will I have to do something like myprogram --debug=1 ? Thanks, Alexis Programming Tutorial: In Python: To do this, do this In Perl: To do this, do this or this or this or this... In C: To do this, do this, but be careful In C++: To do this, do this, but don't do this, be careful of this, watch out for this, and whatever you do, don't do this __________________________________ Celebrate Yahoo!'s 10th Birthday! Yahoo! Netrospective: 100 Moments of the Web http://birthday.yahoo.com/netrospective/

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[Boost-users] Re:[Foreach]TroubleiteratingoverBoost.MultiIndexcontainers
by Arkadiy Vertleyb 09 Mar '05

09 Mar '05

Thorsten, I admit that my understanding of the problem was too simplistic, and apologize for being judgmental. (although I still think ADL-based solutions should be avoided, if only because of the GCC issue. Or, the GCC support should not be claimed) Regards, Arkadiy

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indirect_iterator of reverse_iterator
by Thomas Matelich 08 Mar '05

08 Mar '05

Hello, I'm a little behind the times and am trying to port my old iterator_adapters code to use the new library (1.32). We have a class which is little more than a wrapper around a vector<shared_ptr<T> >, and I am having a heck of a time with setting its typedef for reverse_iterator and const_reverse_iterator. I just can't get const_reverse_iterator to do assignment and comparison with reverse_iterator. I've tried to make indirect_iterators out of the native reverse iterators, using boost::reverse_iterators of indirect_iterators, and a number of more complicated combinations of the 3. No matter which I try I get errors about the const_reverse_iterator not playing nicely with the reverse_iterator. I think I've read everything on the list archives about indirect_iterator, but perhaps I missed something. I'm going to try my code on g++ (currently using VC 7.1) and then work on a complete example, but I thought I'd throw this out and see if someone can quickly answer it. Thanks, Tom

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Trouble converting johnson_all_pairs to use file IO.
by David E. Konerding DSD staff 08 Mar '05

08 Mar '05

Hi folks, I'm trying to convert the Boost Graph Library example from a graph built in the code, to one that usses the adjacency_list_io supporto load the graph from a file. I was able to convert the dijkstra example this way, and had no problems. I'm getting a weird error when I disable GRAPH_CODE (this example is very close to the true example in the boost source distribution): test.cpp: In function `int main(int, char**)': test.cpp:44: no matching function for call to `johnson_all_pairs_shortest_paths (main(int, char**)::Graph&, int[V][V], boost::bgl_named_params<int*, boost::vertex_distance_t, boost::no_property>)' Here's the actual code;l anybody have suggestions? #include <boost/config.hpp> #include <fstream> #include <iostream> #include <iomanip> #include <vector> #include <boost/property_map.hpp> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/adjacency_list_io.hpp> #include <boost/graph/johnson_all_pairs_shortest.hpp> int main(int argc, char **argv) { using namespace boost; typedef adjacency_list<vecS, vecS, directedS, no_property, property< edge_weight_t, int, property< edge_weight2_t, int > > > Graph; typedef std::pair < int, int >Edge; #if defined GRAPH_CODE const int V = 5; Edge edge_array[] = { Edge(0, 1), Edge(0, 4), Edge(0, 2), Edge(1, 3), Edge(1, 4), Edge(2, 1), Edge(3, 2), Edge(3, 0), Edge(4, 3) }; const std::size_t E = sizeof(edge_array) / sizeof(Edge); Graph g(edge_array, edge_array + E, V); property_map < Graph, edge_weight_t >::type w = get(edge_weight, g); int weights[] = { 3, -4, 8, 1, 7, 4, -5, 2, 6 }; int *wp = weights; graph_traits < Graph >::edge_iterator e, e_end; for (boost::tie(e, e_end) = edges(g); e != e_end; ++e) w[*e] = *wp++; #else std::ifstream graph_in(argv[1]); Graph g; graph_in >> read( g ); const int V = num_vertices(g); #endif std::vector < int >d(V, (std::numeric_limits < int >::max)()); int D[V][V]; johnson_all_pairs_shortest_paths(g, D, distance_map(&d[0])); return 0; }

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regex: JavaScript RegEx to boost::regex conversion
by pps 08 Mar '05

08 Mar '05

Hello, I have problem creating case less, global match and multi line regexes in boost and I'd like to ask for a few examples of equivalent (Javascript's RegEx <-> boost::regex) regex test js: string.match( /^abc/ ) string.match( /^abc/i) string.match( /^abc/g) string.match( /^abc/m) c++ regex_match(string, regex("^abc"), match_default) regex_match(string, regex("^abc"), match_default | icase) // <- is it correct? regex_match(string, regex("^abc"), ?? ) //global match? regex_match(string, regex("^abc"), ?? ) //multi line? also I'd like to ask what are the proper namespaces/typedefs/enums I have to use for match flags (for example, there's boost::regex_constants::icase and boost::regex::icase etc...) Thank you

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bjam: rule SubInclude unknown in module Jamfile
by Andre Stechert 08 Mar '05

08 Mar '05

Hi, I'm trying to make pmade software's netxx package available via darwinports, but I'm running into some trouble from bjam. In particular, while doing the build, bjam fails like this: ... DEBUG: Assembled command: 'cd "/Users/andrestechert/darwinports/dports-local/devel/netxx/work/netxx -0.4.2" && NETXX_JAM=bjam MACOSX_DEPLOYMENT_TARGET=10.3 bjam --prefix=/opt/local -sTOOLS=darwin -sBOOST_BUILD_PATH=/opt/local/share/boost-build/' Jamfile:4: in modules.load rule SubInclude unknown in module Jamfile</Users/andrestechert/darwinports/dports-local/devel/netxx/work/ netxx-0.4.2>. /opt/local/share/boost-build/build/project.jam:255: in load-jamfile /opt/local/share/boost-build/build/project.jam:67: in project.load /opt/local/share/boost-build/build-system.jam:75: in load /opt/local/share/boost-build//kernel/modules.jam:259: in import /opt/local/share/boost-build//kernel/bootstrap.jam:120: in boost-build /opt/local/share/boost-build//boost-build.jam:1: in module scope ... I can't find any related bugs in the archive and strings `which bjam` | grep SubInclude yields: rule SubInclude which indicates to me that jambase.c is properly including SubInclude into the bjam binary. Anyone have a hint as to why bjam wouldn't be able to find the SubInclude rule? Apologies if this is a newbie question, this is my first adventure with boost.jam... Thanks in advance, Andre

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segfault in boost program options when using gcc 4.0
by Stephen Torri 07 Mar '05

07 Mar '05

I am testing out gcc 4.0 with an application that I am building. I found that there is a segfault in the command line parser for boost program options. While I understand that boost has yet to officially support gcc 4.0 I want to alert the developers to a potential problem. Ofcourse this needs to be investigated to ensure that the compiler is not the cause of the error. If it is then I can forward the test program attached along with the boost developer's response to the gcc developers. --------- G++ compiler ------------ bash-2.05b$ /usr/local/bin/g++ -v Using built-in specs. Target: i686-pc-linux-gnu Configured with: ../gcc/configure : (reconfigured) ../gcc/configure Thread model: posix gcc version 4.0.0 20050226 (prerelease) ---------- Boost version ------------- boost 1.32-r1 (Gentoo 2004.3 profile) --------- Program backtrace --------- Program received signal SIGSEGV, Segmentation fault. __gnu_cxx::__pool<true>::_M_reclaim_block (this=0x80518c0, __p=0x80555d8 "", __bytes=0) at mt_allocator.cc:222 222 const size_t __which = _M_binmap[__bytes]; Current language: auto; currently c++ (gdb) bt #0 __gnu_cxx::__pool<true>::_M_reclaim_block (this=0x80518c0, __p=0x80555d8 "", __bytes=0) at mt_allocator.cc:222 #1 0x0804bf97 in __gnu_cxx::__mt_alloc<std::string, __gnu_cxx::__common_pool_policy<__gnu_cxx::__pool, true> >::deallocate () #2 0x0804bfc1 in std::_Vector_base<std::string, std::allocator<std::string> >::_M_deallocate () #3 0x0804bff9 in std::_Vector_base<std::string, std::allocator<std::string> >::~_Vector_base () #4 0x0804c0a6 in std::vector<std::string, std::allocator<std::string> >::~vector () #5 0x0804c0e5 in boost::program_options::common_command_line_parser::~common_command_line_parser () #6 0x0804c13b in boost::program_options::basic_command_line_parser<char>::~basic_command_line_parser () #7 0x0804e0a3 in boost::program_options::parse_command_line<char> () #8 0x0804a5c2 in main () (gdb) quit Stephen

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