- Boost-users - lists.boost.org

Corrupted boost::regex::smatch results (on MSVS 2003)
by david.weber＠l-3com.com 15 Apr '09

15 Apr '09

All, I'm using Boost.Regex from v1.35.0. We're seeing the smatch matchresults object getting corrupted when being returned by value from a function. The smatch variable is good within the function (it is an object defined locally on the stack), but when returned it is corrupted with bad data. We're seeing this only in Visual Studio 2003, and no other platform. I'm still trying to figure out a workaround, but I do not have source access at the moment, to try and debug it that way. Just wondering if there are any known issues. A google search didn't return much by way of discussion of this sort of issue. Thanks --dw

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[Bind] how can a make the equivalent to the , operator
by Robert Ramey 15 Apr '09

15 Apr '09

I would like to compose two function objects into one. Bind describse this using || or && but my function objects return void. How can i package them into a new one that invokes both the components. Robert Ramey

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Unknown number of multitoken lists?
by David Doria 15 Apr '09

15 Apr '09

I want to do something like this: --NumLists 2 --List0 a.txt b.txt --List1 c.txt d.txt vector<vector<string> > Lists(2); po::options_description desc("Allowed options"); desc.add_options() ("help", "produce help message") ("List0", po::value<vector<string> >(&Lists[0])->multitoken(), "List0.") ("List1", po::value<vector<string> >(&Lists[1])->multitoken(), "List1.") ; But if I wanted to handle --NumLists 10, I would have to manually add List0, List1, ... List10 as parameters. That seems a bit silly, but maybe this is a very odd usage? Please let me know if you can think of a better way to handle this. Thanks, David

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Re: [Boost-users] Multiple Multitokens
by David Doria 15 Apr '09

15 Apr '09

Vladimir, it looks like only in the trunk, it didn't work with the distribution that came with Fedora 10. Also, when I compiled the trunk, I had to add using std::string; to boost/tools/wave/cpp.cpp for it to compile. Another question: When I link to boost_program_options-mt, cmake seems to truncate it to boost_program_options, so I had to add a symbolic link with that name. Does anyone else have that problem? Thanks, David > I would like to do: > --List0 a.txt b.txt --List1 c.txt d.txt > > Is that possible? > > Thanks, > > David >

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Boost::Asio No write handler called after async_write
by David Narvaez 15 Apr '09

15 Apr '09

Hi everyone, this (I think) is about boost::asio. Could somebody please tell me why in the following code my handle_write function is never called after the async_write? This tries to be an hybrid mixture of sync read and async write through a socket and even though the string gets written, no handler is called at the end. #include <boost/asio.hpp> #include <boost/thread.hpp> #include <boost/shared_ptr.hpp> #include <boost/enable_shared_from_this.hpp> #include <boost/bind.hpp> #include <iostream> #include <string> using boost::asio::ip::tcp; using namespace std; class Server : public boost::enable_shared_from_this<Server> { public: Server(); virtual ~Server(); void run(tcp::socket &); void handle_write(const boost::system::error_code &, size_t); }; Server::Server() { } Server::~Server() { } void Server::run(tcp::socket & sock) { string message("Hi!"); try { async_write(sock, boost::asio::buffer(message), boost::bind( &Server::handle_write, shared_from_this(), boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred)); } catch (exception& e) { cerr << e.what() << endl; } return; } void Server::handle_write(const boost::system::error_code & errc, size_t bytes) { cout << "Function called" << endl; return; } int main() { try { boost::asio::io_service ioserv; tcp::acceptor acceptor(ioserv, tcp::endpoint(tcp::v4(), 1337)); boost::shared_ptr<Server> newserver(new Server()); for (;;) { tcp::socket newsocket(ioserv); acceptor.accept(newsocket); cout << "Somebody arrived" << endl; newserver->run(newsocket); } } catch (exception& e) { cerr << e.what() << endl; } return 0; }

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[Multi-Index] Chained Ptr misunderstanding
by Dominique Devienne 14 Apr '09

14 Apr '09

Hi. I'm trying to use a shared_ptr as the value_type of a multi_index_container, but I'm not having any success with the key extractors (VS2005, 1.38). >From the doc, it seems that shared_ptr would be considered a Chained Pointer, and as such should work as-is, which by that I mean that I think I should be able to use the built-in key extractors whether value_type is a value or a shared_ptr. But I'm not having any luck. I found [1] which is very similar and which Joaquín answered, but I have other key extractors I want to use in different indexes, so I don't think using identity<> is applicable to my case in general, although it would be in this one. I'm trying to avoid having to write dumb custom key extractors for Foo, which would basically replicate what the built-in ones do in the first place. It's most likely an error an my part, but I can't spot it. Can someone please help? Thanks, --DD [1] http://www.nabble.com/-multiindex--custom-key-extractor-problem-td20839161.… #include <boost/multi_index_container.hpp> #include <boost/multi_index/ordered_index.hpp> #include <boost/multi_index/mem_fun.hpp> #include <boost/shared_ptr.hpp> using namespace boost; using namespace boost::multi_index; typedef unsigned Uid; static Uid make_uid() { static Uid counter__ = 101; return ++counter__; } class Foo { public: Foo() : uid_(make_uid()) {} const Uid& uid() const { return uid_; } private: Uid uid_; }; typedef multi_index_container< shared_ptr<Foo>, indexed_by< ordered_unique< BOOST_MULTI_INDEX_CONST_MEM_FUN( shared_ptr<Foo>, const Uid&, uid ) > > > FooIndex; int main() { FooIndex index; shared_ptr<Foo> p_foo(new Foo); BOOST_ASSERT(index.insert(p_foo).second); return 0; }

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[boost::bind] are volatile members still unsupported?
by Ovanes Markarian 14 Apr '09

14 Apr '09

Hi *, I found this thread from october 2004: http://lists.boost.org/boost-users/2004/10/8116.php Now I am running MSVC 9 (2008) and wonder if boost::bind still does not support volatile members? Many thanks, Ovanes

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Disabling Exception Handling
by Dykstra, Martin 14 Apr '09

14 Apr '09

Hi. Is there a way to disable the exception handling in the Boost libraries? Our project requires that we disable exceptions by using the -no-exceptions parameter when building (via gcc). Is this also a valid parameter to use when building the Boost libraries? Thanks. -Martin

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issues with unit tests on intel 32 bit, gcc 4.3, undefined reference to `__sync_fetch_and_add_4'
by Maróy Ákos 14 Apr '09

14 Apr '09

Hi, I'm having an issue to link a boost unit test application on a Linux box, which is 64 bit - but I want to create a 32 bit application. I saw the following bug report: https://svn.boost.org/trac/boost/ticket/2525 and applied to patches attached, but to no avail. I also tried the latest svn trunk of boost, but still no luck. I'm trying to compile & link the following simple sample app: #include <boost/test/unit_test.hpp> using namespace boost::unit_test; test_suite * init_unit_test_suite(int, char ** const) { test_suite *ts = BOOST_TEST_SUITE("test_suite"); framework::master_test_suite().add(ts); return 0; } I get the following results: $ make tests g++ -m32 -L/home/maroy/src/tyrell/src/darksweep/usr/lib -I/home/maroy/src/tyrell/src/darksweep/usr/include/boost-1_39 -o tests tests.cpp -lboost_test_exec_monitor-gcc43-mt-s -lboost_unit_test_framework-gcc43-mt-s /home/maroy/src/tyrell/src/darksweep/usr/lib/libboost_test_exec_monitor-gcc43-mt-s.a(framework.o): In function `boost::unit_test::framework::register_test_unit(boost::unit_test::test_suite*)': framework.cpp:(.text+0x4a4): undefined reference to `__sync_fetch_and_add_4' /home/maroy/src/tyrell/src/darksweep/usr/lib/libboost_test_exec_monitor-gcc43-mt-s.a(framework.o): In function `boost::unit_test::framework::register_test_unit(boost::unit_test::test_case*)': framework.cpp:(.text+0x648): undefined reference to `__sync_fetch_and_add_4' framework.cpp:(.text+0x713): undefined reference to `__sync_fetch_and_add_4' /home/maroy/src/tyrell/src/darksweep/usr/lib/libboost_test_exec_monitor-gcc43-mt-s.a(framework.o): In function `boost::unit_test::framework::get(unsigned long, boost::unit_test::test_unit_type)': framework.cpp:(.text+0x14fb): undefined reference to `__sync_fetch_and_add_4' /home/maroy/src/tyrell/src/darksweep/usr/lib/libboost_test_exec_monitor-gcc43-mt-s.a(framework.o): In function `boost::unit_test::framework::run(unsigned long, bool)': framework.cpp:(.text+0x3151): undefined reference to `__sync_fetch_and_add_4' /home/maroy/src/tyrell/src/darksweep/usr/lib/libboost_test_exec_monitor-gcc43-mt-s.a(framework.o):framework.cpp:(.text._ZN5boost9unit_test9framework11setup_errorC1ENS0_13basic_cstringIKcEE[boost::unit_test::framework::setup_error::setup_error(boost::unit_test::basic_cstring<char const>)]+0x5c): more undefined references to `__sync_fetch_and_add_4' follow collect2: ld returned 1 exit status make: *** [tests] Error 1 I compiled boost using the following command: bjam architecture=x86 address-model=32 link=static runtime-link=static --prefix=../../usr --includedir=../../usr/include --libdir=../../usr/lib install I have the following: $ g++ --version g++ (Ubuntu 4.3.2-1ubuntu12) 4.3.2 Copyright (C) 2008 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ uname -a Linux tomodachi 2.6.27-11-generic #1 SMP Wed Apr 1 20:53:41 UTC 2009 x86_64 GNU/Linux (basically Ubuntu 8.10 64 bit) am I doing something wrong?

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multiple multitokens program_options
by David Doria 14 Apr '09

14 Apr '09

I would like to do: --List0 a.txt b.txt --List1 c.txt d.txt Is that possible? Thanks, David

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