- Boost-users - lists.boost.org

RE: [Boost-users] boost::thread, boost::bind, and member functions
by Ben Hutchings 25 May '04

25 May '04

Mike Feldmeier <pooky_bunny(a)hotmail.com> wrote: [ Ben Hutchings wrote:] > > Mike Feldmeier <pooky_bunny(a)hotmail.com> wrote: <snip> > > > This consistently produces the linking error: > > > > > > converter.obj : error LNK2019: unresolved external symbol > > > "__declspec(dllimport) public: __thiscall boost::thread::thread( > > > class boost::function0<void,class > > > _STL::allocator<class boost::function_base> > const &)" > > > (__imp_??0thread@boost@@QAE@ABV?$function0@XV?$allocator@Vfunction > > > _base@boost@@@_STL@@@1@@Z) referenced in function "public: void > > > __thiscall mytest::test::converter::run(void)" > > > (?run@converter@test@mytest@@QAEXXZ) > > > >I think you aren't linking with the thread library. <snip> > I'm using Visual C++ 7.1, but using straight C++, no .NET. I've > defined the addtional library path (C:\boost\lib) and tried linking > (in the additional dependencies) with > boost_thread-vc71-mt-gdp-1_31.lib, boost_thread-vc71-mt-gdp.lib, > boost_thread-vc71-mt-p-1_31.lib, and boost_thread-vc71-mt-p.lib (one > at a time, of course), but I get the same error message with all of > them. <snip> I've worked it out now. In your main program you are using STLport - notice the "_STL" namespace instead of "std" but Boost.Thread is built with the library that comes with VC++ 7.1, which of course uses the "std" namespace. Unless STLport has some specific feature that you need I suggest you use the standard library that comes with VC++ 7.1; it's a very good implementation. If you must use STLport then you need to build Boost.Thread (and any other libraries with which you share standard library types) using it.

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RE: [Boost-users] boost::thread, boost::bind, and member functions
by Mike Feldmeier 25 May '04

25 May '04

>From: "Ben Hutchings" <ben.hutchings(a)businesswebsoftware.com> >Reply-To: boost-users(a)lists.boost.org >To: <boost-users(a)lists.boost.org> >Subject: RE: [Boost-users] boost::thread, boost::bind, and member functions >Date: Tue, 25 May 2004 12:07:32 +0100 > >Mike Feldmeier <pooky_bunny(a)hotmail.com> wrote: > > I've seen variations of this come up in this newsgroup and elsewhere, > > but I have yet to find an answer that works for me. > > > > class threaded_manager > > { > > public: > > void start(void); > > }; > > > > threaded_manager mgr; > > > > boost::thread(boost::bind(&threaded_manager::start, &mgr)); > > > > This consistently produces the linking error: > > > > converter.obj : error LNK2019: unresolved external symbol > > "__declspec(dllimport) public: __thiscall boost::thread::thread(class > > boost::function0<void,class > > _STL::allocator<class boost::function_base> > const &)" > > (__imp_??0thread@boost@@QAE@ABV?$function0@XV?$allocator@Vfunction_bas > > e@boost@@@_STL@@@1@@Z) referenced in function "public: void __thiscall > > mytest::test::converter::run(void)" > > (?run@converter@test@mytest@@QAEXXZ) > >I think you aren't linking with the thread library. Many of the Boost >libraries (such as Boost.Bind) include their implementation entirely in >header files, so they will be compiled into your program as needed. >Boost.Thread doesn't; you need to build it as a library (and on Windows >it must be a DLL) and link it with your program. > I'm using Visual C++ 7.1, but using straight C++, no .NET. I've defined the addtional library path (C:\boost\lib) and tried linking (in the additional dependencies) with boost_thread-vc71-mt-gdp-1_31.lib, boost_thread-vc71-mt-gdp.lib, boost_thread-vc71-mt-p-1_31.lib, and boost_thread-vc71-mt-p.lib (one at a time, of course), but I get the same error message with all of them. > > Separating the two boost functions on to separate lines works fine: > > > > boost::bind(&threaded_manager::start, &mgr); > > boost::thread(); > > > > ..which indicates to me that bind is returning an object that is not > > compatible with thread, but I've seen multiple examples of just this > > type of call. ><snip> > >If that were the case you should see a compiler error. The two lines >above may work because the default constructor for boost::thread is >compiled inline whereas the other constructor must be linked in. >Having said that, though, neither v1.30 nor v1.31 has the default >constructor definition in the header, so I don't entirely understand >what's going on. Did you perhaps mistakenly declare a function >returning a boost::thread? > Thus far, this line (or two lines) are the only boost-related lines in my code. >Ben. > >_______________________________________________ >Boost-users mailing list >Boost-users(a)lists.boost.org >http://lists.boost.org/mailman/listinfo.cgi/boost-users Thanks, Mike _________________________________________________________________ Get 200+ ad-free, high-fidelity stations and LIVE Major League Baseball Gameday Audio! http://radio.msn.click-url.com/go/onm00200491ave/direct/01/

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RE: [Boost-users] Regex++ Installation Problems
by Ben Hutchings 25 May '04

25 May '04

kinshuk srivastava <srivastavakinshuk(a)yahoo.co.in> wrote: > I had written earlier too regarding installation > problems with the regex++...sorry for not providing > the complete details last time..But I am again sending > the errors... > The Gcc compiler which m using is gcc3.2 nd the > operating system is SuSE 9.6...I think the regex++ > version is 331... > the following are the errors: <snip> > ../../../boost/regex/v3/regex_match.hpp:1937: Internal compiler error > in expand_call, at calls.c:3049 > Please submit a full bug report, > with preprocessed source if appropriate. > See <URL:http://www.gnu.org/software/gcc/bugs.html> > for instructions. Why didn't you just do what the error message said? You should have found this existing bug report: <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8701>. Anyway, this turns out to be a bug that SuSE introduced to its version of GCC. Go to them for a fix.

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RE: [Boost-users] boost::thread, boost::bind, and member functions
by Ben Hutchings 25 May '04

25 May '04

Mike Feldmeier <pooky_bunny(a)hotmail.com> wrote: > I've seen variations of this come up in this newsgroup and elsewhere, > but I have yet to find an answer that works for me. > > class threaded_manager > { > public: > void start(void); > }; > > threaded_manager mgr; > > boost::thread(boost::bind(&threaded_manager::start, &mgr)); > > This consistently produces the linking error: > > converter.obj : error LNK2019: unresolved external symbol > "__declspec(dllimport) public: __thiscall boost::thread::thread(class > boost::function0<void,class > _STL::allocator<class boost::function_base> > const &)" > (__imp_??0thread@boost@@QAE@ABV?$function0@XV?$allocator@Vfunction_bas > e@boost@@@_STL@@@1@@Z) referenced in function "public: void __thiscall > mytest::test::converter::run(void)" > (?run@converter@test@mytest@@QAEXXZ) I think you aren't linking with the thread library. Many of the Boost libraries (such as Boost.Bind) include their implementation entirely in header files, so they will be compiled into your program as needed. Boost.Thread doesn't; you need to build it as a library (and on Windows it must be a DLL) and link it with your program. > Separating the two boost functions on to separate lines works fine: > > boost::bind(&threaded_manager::start, &mgr); > boost::thread(); > > ..which indicates to me that bind is returning an object that is not > compatible with thread, but I've seen multiple examples of just this > type of call. <snip> If that were the case you should see a compiler error. The two lines above may work because the default constructor for boost::thread is compiled inline whereas the other constructor must be linked in. Having said that, though, neither v1.30 nor v1.31 has the default constructor definition in the header, so I don't entirely understand what's going on. Did you perhaps mistakenly declare a function returning a boost::thread? Ben.

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Boost.Test release notes typos
by Ross Boylan 25 May '04

25 May '04

I noticed a couple of typos in the latest release notes for Boost.Test, at http://cvs.sourceforge.net/viewcvs.py/boost/boost/libs/test/doc/release_not… It now reads, near the top, <LI>Floating point comaprison algorithm reworked (Is not backward compatible!!!) <UL> <LI><u>tolerance now expected in persent units</u></LI> That should be comparison in the first line and percent in the last.

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boost::thread, boost::bind, and member functions
by Mike Feldmeier 24 May '04

24 May '04

I've seen variations of this come up in this newsgroup and elsewhere, but I have yet to find an answer that works for me. class threaded_manager { public: void start(void); }; threaded_manager mgr; boost::thread(boost::bind(&threaded_manager::start, &mgr)); This consistently produces the linking error: converter.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall boost::thread::thread(class boost::function0<void,class _STL::allocator<class boost::function_base> > const &)" (__imp_??0thread@boost@@QAE@ABV?$function0@XV?$allocator@Vfunction_base@boos t@@@_STL@@@1@@Z) referenced in function "public: void __thiscall mytest::test::converter::run(void)" (?run@converter@test@mytest@@QAEXXZ) Separating the two boost functions on to separate lines works fine: boost::bind(&threaded_manager::start, &mgr); boost::thread(); ..which indicates to me that bind is returning an object that is not compatible with thread, but I've seen multiple examples of just this type of call. This is probably something simple, my two days of experience with Boost just doesn't appear to be sufficient. What in the world am I doing wrong? Thanks, Mike _________________________________________________________________ Stop worrying about overloading your inbox - get MSN Hotmail Extra Storage! http://join.msn.click-url.com/go/onm00200362ave/direct/01/

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Win32 Non-greedy Regex "\w*?" matches whitespace (tab or space)
by John F Meinel Jr 24 May '04

24 May '04

When changing the "search for word characters" from greedy to non-greedy, it starts to match whitespace characters. Attached is an example program. If you remove the '?' to make the search greedy, then it (correctly) doesn't match. I am using boost 1.31.0, on WinXP using VC7.1. I have confirmed that this does not occur on my Linux machine. Also attached is my Jamfile to make sure I didn't just compile it wrong. It occurs in both debug and release mode. John =:-> project-root ; exe test : test.cpp #unit_test_example1.cpp : <sysinclude>$(BOOST_ROOT) <stlport-iostream>on <library-path>$(BOOST_ROOT)/../../lib <vc7.1><debug><find-library>libboost_regex-vc71-mt-gd <vc7.1><release><find-library>libboost_regex-vc71-mt <gcc><debug><find-library>boost_regex-gcc-mt-d <gcc><release><find-library>boost_regex-gcc-mt <threading>multi ; # vim: ts=4 #include <boost/regex.hpp> #include <iostream> boost::regex re("(\\w*?)"); void doesMatch(std::string s) { boost::smatch m; std::cout << "String: \"" << s << "\"" << std::endl; if(boost::regex_match(s, m, re)) { std::cout << "Matched: "; std::cout << "\"" << std::string(m[1]) << "\"" << std::endl; } else { std::cout << "Didn't match" << std::endl; } std::cout << std::endl; } int main(int argc, char **argv) { if(argc > 1) for(int i = 1; i < argc; ++i) doesMatch(argv[i]); else { char *arg[] = {"", "should", "should\tnot", "shou_ld", "should not" ," doesn't " }; main(sizeof(arg)/sizeof(char*), arg); } }

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boost/test/detail/algorithm.hpp: request for promotion and/or fast review
by Gennadiy Rozental 23 May '04

23 May '04

Hi, I added several algorithms that extent STL algorithms set. I use them in my Boost.test development. But since they seems to be generic and IMO should be present in STL I propose to push them in boost/algorithm.hpp (or under boost/algorithm). I remember there was a discussion already about these algorithms. Here is the list (I hope name and spec is self -explanatory): template <class InputIter1, class InputIter2> inline std::pair<InputIter1, InputIter2> mismatch( InputIter1 first1, InputIter1 last1, InputIter2 first2, InputIter2 last2 ); template <class InputIter1, class InputIter2, class Predicate> inline std::pair<InputIter1, InputIter2> mismatch( InputIter1 first1, InputIter1 last1, InputIter2 first2, InputIter2 last2, Predicate pred ); template<class ForwardIterator1, class ForwardIterator2> inline ForwardIterator1 find_first_not_of( ForwardIterator1 first1, ForwardIterator1 last1, ForwardIterator2 first2, ForwardIterator2 last2 ); template<class ForwardIterator1, class ForwardIterator2, class Predicate> inline ForwardIterator1 find_first_not_of( ForwardIterator1 first1, ForwardIterator1 last1, ForwardIterator2 first2, ForwardIterator2 last2, Predicate pred ); template<class BidirectionalIterator1, class ForwardIterator2> inline BidirectionalIterator1 find_last_of( BidirectionalIterator1 first1, BidirectionalIterator1 last1, ForwardIterator2 first2, ForwardIterator2 last2 ) template<class BidirectionalIterator1, class ForwardIterator2, class Predicate> inline BidirectionalIterator1 find_last_of( BidirectionalIterator1 first1, BidirectionalIterator1 last1, ForwardIterator2 first2, ForwardIterator2 last2, Predicate pred ); template<class BidirectionalIterator1, class ForwardIterator2> inline BidirectionalIterator1 find_last_not_of( BidirectionalIterator1 first1, BidirectionalIterator1 last1, ForwardIterator2 first2, ForwardIterator2 last2 ); template<class BidirectionalIterator1, class ForwardIterator2, class Predicate> inline BidirectionalIterator1 find_last_not_of( BidirectionalIterator1 first1, BidirectionalIterator1 last1, ForwardIterator2 first2, ForwardIterator2 last2, Predicate pred ); Implementation together with doxigen docs is here: http://tinyurl.com/35pfj Test is here: http://tinyurl.com/yvlgu If we don't find this header eligible for review I would like to ask then for permision to at least put this algorithm in boost namespace (currently boost::unit_test), for it inconvenience for me to keep it in deep namespace. Gennadiy.

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Problems with
by Pete Cilliers 23 May '04

23 May '04

Hi I am having problems running on MSVC 7.1 the example given in The parameterized boost::function based test case #include <boost/test/unit_test_ex.hpp> using boost::unit_test_framework::test_suite; #include <boost/bind.hpp> void test_mask( int arg, int mask ) { BOOST_CHECK( (arg & mask) != 0 ); } struct sub_test_suite : public test_suite { sub_test_suite() { parameters_list.push_back( 1 ); parameters_list.push_back( 5 ); parameters_list.push_back( 6 ); parameters_list.push_back( 7 ); parameters_list.push_back( 15 ); add( BOOST_PARAM_TEST_CASE( bind( &test_mask, _1, 0x80 ), parameters_list.begin(), parameters_list.end() ) ) ); } std::list<int> parameters_list; } //__________________________________________________________________________ __// test_suite* init_unit_test_suite( int argc, char* argv[] ) { test_suite* test = BOOST_TEST_SUITE( "Example" ); test->add( new sub_test_suite ); return test; } I get the following error: error C2661: 'boost::unit_test_framework::create_test_case' : no overloaded function takes 4 arguments I have had to make a number of changes to the example to correct typo's but the example given here is as it appears in the documentation. Has anyone experienced the same type of problem and can you please advise on how to correct? Thanks ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. **********************************************************************

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check() function?
by Mark Dawson 21 May '04

21 May '04

I'm trying to compile boost 1.3.0 using the CodeWarrior 9.2 compiler on Mac OS X (10.3.3). I've run into a weird error: Error : unexpected argument while expanding macro 'check' (wanted 1) (included from: boost/type_traits.hpp:29 is_base_and_derived.hpp line 112 s_type check(D const volatile *, T); is_base_and_derived.hpp: template <typename B, typename D> struct bd_helper { template <typename T> static type_traits::yes_type check(D const volatile *, T); static type_traits::no_type check(B const volatile *, int); }; When I look up check() its in my /usr/include/AssertMacros.h file, it DOES takes one parameter. Am I somehow including the wrong paths, and (should be) getting check() from somewhere else? Thanks, mark mcdawson(a)mac.com

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