- Boost-users - lists.boost.org

Class template spec with enable_if
by Agoston Bejo 21 Dec '04

21 Dec '04

Hello again! See the example below. (Platform: VC++7.1) This error is strange for me because it only occurs in the case of class template specialization. The compiler deduces the type of is_arithmetic<T>::value falsely, not as bool, althought it is known at compile time, isn't it? The error messages (both referring to the erroneous line marked with "ERROR"): error C2296: '&&' : illegal, left operand has type 'is_arithmetic<T>::value' error C2297: '&&' : illegal, right operand has type 'is_arithmetic<T2>::value' Thx, Agoston Example: //------------------------------------------------------- #include <iostream> #include <boost/utility/enable_if.hpp> #include <boost/type_traits.hpp> #include <boost/mpl/and.hpp> using namespace std; using namespace boost; using namespace mpl; // ----------------- template<typename T1, typename T2, typename TEnabler = void> struct Enabler { static const bool value = false; }; template<typename T1, typename T2> struct Enabler<T1, T2, typename enable_if_c< is_arithmetic<T1>::value && is_arithmetic<T2>::value >::type // ERROR!!! > { static const bool value = true; }; */ /* //WOULD WORK: typename enable_if< and_< is_arithmetic<T1>, is_arithmetic<T2> > >::type */ // ----------------- template<typename T1, typename T2> typename enable_if_c< is_arithmetic<T1>::value && is_arithmetic<T2>::value >::type f(T1 t1, T2 t2) { cout << t1 << " " << t2 << endl; } // ----------------- int _tmain(int argc, _TCHAR* argv[]) { f(5.0, 6); return 0; }

1 0

Do you think the Serialization Lib too disordered ?
by zhengyi 21 Dec '04

21 Dec '04

Serialization Lib doesn't have any single header file that can include for all. you must include every class header file separately. And what's the archive ? What is it's role ? Does it is an other liberary?(There is not any info in the downloaded Doc ). My Test code can't link successfully. The linker said there are some unresolved external symbol. It seems that some class was implemented in files in the archive. But this dir is not a "project",and the bjam do not compile it .it is simple copy file to the destination. It seems that those classes were not exposed by the serialization project 　　　　　　　　　　　　　　zhengyi 　　　　　　　　　　　　　　goodmen(a)x263.net 　　　　　　　　　　　　　　　　　2004-12-08

2 2

question - modify depth_first_search
by Matthias Linkenheil 21 Dec '04

21 Dec '04

2 1

AW: [Boost-users] boost::variant with boost::signals leads toInternalCompiler Error with MSDEV 7.1
by "Meißner, Joachim" 21 Dec '04

21 Dec '04

Removing successivly the compiler switches I finally coud build my code snippet by Removing the /Gm option. Jom > Von: Meißner, Joachim > Gesendet: Dienstag, 21. Dezember 2004 09:01 > > I'm using this compiler call (generated by QT's qmake): > > cl.exe /Od /I "\boost-1.32.0" /I "\Qt\include" /I "." /I > "\Qt\mkspecs\win32-msvc.net" /D "_WINDOWS" /D "UNICODE" /D > "WIN32" /D "BOOST_SIGNALS_NAMESPACE=signalslib" /D > "QT_THREAD_SUPPORT" /Gm /EHsc /MTd /GR /Fo".\\" /Fd".\\" /W3 > /nologo /c /Zi /TP -Zm200 -GX -GX -w34100 -w34189 test_wrap.cpp > > Resulting in this error: > > ..\boost-1.32.0\boost\mpl\aux_\preprocessed\plain\apply_wrap.h > pp(48) : fatal error C1001: INTERNAL C OMPILER ERROR > > Compiler is: > Microsoft Development Environment Version 7.1.3088 > > Jom

2 1

boost::variant with boost::signals leads to Internal Compiler Error with MSDEV 7.1
by "Meißner, Joachim" 21 Dec '04

21 Dec '04

Hi Environment: MS 7.1 compile with MS implementation of STL Boost 1.32.0 Summary: I get an internal compiler error using boost::variant as a parameter of a boost::signal compiling with MSDEV 7.1, but not with gcc3.3/3.4 or MinGW (3.5). Does anyone knows a workaround other than not using boost::signals? Details Using a signal with a variant of 2 simple classes (see code snippet) leads to an internal compiler error C1001. Using pragma command to turn optimisation off as Suggested by the compiler does not change a thing Does anyone knows a workaround? Regards, jom Here's the bad code snippet: #include <boost/bind.hpp> #include <boost/signals.hpp> #include <boost/variant.hpp> #include <vector> class MessageException : public std::exception { public: MessageException() : std::exception( "Message error" ) {} }; class Message { public: typedef std::vector<unsigned char> Content; Message(unsigned int p, unsigned char def = ' ') : m_vector( p, def ) {} const Content& message() {return m_vector;} private: Content m_vector; }; typedef boost::variant<MessageException, Message> MessageVariant; class TestWrap { public: TestWrap(){} typedef boost::signal1<void, MessageVariant> MessageSignal; //typedef boost::signal<void (MessageVariant)> MessageSignal; void send_signal (MessageVariant& variant) { m_message_signal( variant ); } private: MessageSignal m_message_signal; };

3 2

AW: [Boost-users] boost::variant with boost::signals leads toInternal Compiler Error with MSDEV 7.1
by "Meißner, Joachim" 21 Dec '04

21 Dec '04

I'm using this compiler call (generated by QT's qmake): cl.exe /Od /I "\boost-1.32.0" /I "\Qt\include" /I "." /I "\Qt\mkspecs\win32-msvc.net" /D "_WINDOWS" /D "UNICODE" /D "WIN32" /D "BOOST_SIGNALS_NAMESPACE=signalslib" /D "QT_THREAD_SUPPORT" /Gm /EHsc /MTd /GR /Fo".\\" /Fd".\\" /W3 /nologo /c /Zi /TP -Zm200 -GX -GX -w34100 -w34189 test_wrap.cpp Resulting in this error: ..\boost-1.32.0\boost\mpl\aux_\preprocessed\plain\apply_wrap.hpp(48) : fatal error C1001: INTERNAL C OMPILER ERROR Compiler is: Microsoft Development Environment Version 7.1.3088 Jom > -----Ursprüngliche Nachricht----- > Von: Victor A. Wagner Jr. [mailto:vawjr@rudbek.com] > Gesendet: Montag, 20. Dezember 2004 19:33 > > your snippit compiles fine using my vs7.1 and the latest from > CVS. is there some code needed to instantiate any of this > needed to cause the ICE? >

1 0

CodeWarrior 9 for Mac
by Stephen W. Carson 21 Dec '04

21 Dec '04

Has anyone used boost on CodeWarrior 9 for Mac? Our Mac programmer tried compiling boost v1.30.0 on CodeWarrior v9.3 running on MacOS 10.3. She got a slew of compile errors, (beginning with a check() macro). Is there any point in proceeding? Thanks, -- Stephen W. Carson dirXion St. Louis, MO

3 2

mutex.cpp with pthread problem
by Michael Garriss 21 Dec '04

21 Dec '04

from libs/thread/mutex.cpp in boost 1.31, around line 211: void mutex::do_lock() { int res = 0; res = pthread_mutex_lock(&m_mutex); if (res == EDEADLK) throw lock_error(); assert(res == 0); } that last assert is failing for me. pthread_mutex_lock is returning 22 which if it's from sys/errno.h is EINVAL or "Invalid argument". any ideas? i built boost 1.31 on hpux 11.11 with a gcc from hp. some info: > gcc -v Reading specs from /usr/local/lib/gcc-lib/hppa2.0w-hp-hpux11.11/3.3.3/specs Configured with: /scratch/zack/pkgbuild/3.3.1/hpux-11/gcc-3.3.3/configure --enable-languages=c,c++ --enable-threads=posix --disable-nls --with-gnu-as --without-gnu-ld --with-as=/usr/local/bin/as --prefix=/usr/local Thread model: posix gcc version 3.3.3 > uname -a HP-UX unknown B.11.11 U 9000/800 180901557 unlimited-user license thanks, mike

2 5

Tuple access on Solaris
by darren.gilbert＠ubs.com 20 Dec '04

20 Dec '04

Hello, I was using the boost tuples library (from boost 1.31) to create a cache key. However, the Solaris compiler (SUNWspro v6.2.p1) complained when I tried to access the last element in the tuple. My class looked something like this: typedef enum result_type_id { ... } ResultTypeID; class ParamStateKey; class Cache { typedef boost::tuple<ParamStateKey, ResultTypeID, int, int, int> key_type; // cache implementation ... // some helper functions defined to hide the boost::tuple interface static ParamStateKey &GetState(key_type &k) { return boost::tuples::get<0>(k); } static ResultTypeID &GetGreek(key_type &k) { return boost::tuples::get<1>(k); } static int &GetProduct(key_type &k) { return boost::tuples::get<2>(k); } static int &GetSubpage(key_type &k) { return boost::tuples::get<3>(k); } static int &GetBucket(key_type &k) { return boost::tuples::get<4>(k); } static key_type MakeKey(const ParamStateKey &psk, ResultTypeID r, int p1, int p2, int bkt) { return boost::tuples::make_tuple(psk, r, p1, p2, bkt); } }; The solaris compiler complained whenever I tried to call Cache::GetBucket() with the following error: "../../../../incl/3rd/boost/tuple/detail/tuple_basic.hpp", line 105: Error: Could not find a match for boost::tuples::detail::get_class<0>::get<boost::tuples::detail::get_class<0>::RET, boost::tuples::detail::get_class<0>::HT, boost::tuples::detail::get_class<0>::TT>(boost::tuples::cons<int, boost::tuples::null_type>). "../../../../incl/3rd/boost/tuple/detail/tuple_basic.hpp", line 105: Where: While instantiating "static boost::tuples::detail::get_class<1>::get<int&, int, boost::tuples::cons<int, boost::tuples::null_type>>(boost::tuples::cons<int, boost::tuples::cons<int, boost::tuples::null_type>>&)". "../../../../incl/3rd/boost/tuple/detail/tuple_basic.hpp", line 105: Where: Instantiated from non-template code. Firstly, I have no way of deciphering that error message. Through trial and error, I found that removing the GetBucket() calls solved the problem. However, I needed these calls. I reasoned that since the other helper functions worked, it was a problem accessing the last element of the tuple. So I created a dummy entry in the tuple and redefined my typedef: typedef boost::tuple<ParamStateKey, ResultTypeID, int, int, int, int> key_type; This work-around is fine, so this is not an urgent problem. But it seems like this should not be necessary. ________________________________________ Darren Gilbert Associate Director UBS - Equities Quantitative Strategies Phone: +1 (312) 525-5766 Stein's law: "When a trend cannot continue it will stop." -- Herb Stein, Chairman of the Council of Economic Advisors under Nixon Visit our website at http://www.ubs.com This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. This message is provided for informational purposes and should not be construed as a solicitation or offer to buy or sell any securities or related financial instruments.

1 0

Efficient removal of std::list items
by Cory Nelson 20 Dec '04

20 Dec '04

This seems like the type of thing boost may have an answer to, yet I still havn't found it: I have two std::lists, about 50,000 items in each. The items are all number ranges so two uints start and end. I need to remove one list from the other - exact matches or subranges only. Currently I'm using remove_if() to remove/shrink/split them but it is taking forever, around 30sec. Anyone know of a better solution? -- Cory Nelson http://www.int64.org

4 10