- Boost - lists.boost.org

[shared_ptr] PPC implementations updated
by Peter Dimov 09 Apr '05

09 Apr '05

I have fixed a 970-specific problem with the PPC implementations that was pointed to us by Philip Koch. Thanks to Miro Jurisic for getting his attention. So the tests will need to be re-run. I hope I didn't make any stupid mistakes. -- Peter Dimov http://www.pdimov.com

4 21

[timer] progress_timer's dtor - strange behavior
by Pavel Chikulaev 09 Apr '05

09 Apr '05

Hi all, I'm just happened to use boost::progress_timer for the first time, and was shocked by strange behavior of the progress_timer dtor: Surprisingly, it puts two newlines in the stream ('\n', then endl). So, I've got question - it is a bug or it is a feature? Using current implementation I just can't get the output look like: the first block took 2.34 s the second block took 5.67 s IMO this's a bug, and it should be fixed. Also I would like to be able to specify that no newlines in dtor are needed at all. This is very useful for stringstreams for example. Here's the fixed progress_timer: class progress_timer : public timer, private noncopyable { public: explicit progress_timer(std::ostream & os = std::cout, bool putnewline = true) : m_os(os), m_putnewline(putnewline) {} ~progress_timer() { try { std::istream::fmtflags old_flags = m_os.setf( std::istream::fixed, std::istream::floatfield ); std::streamsize old_prec = m_os.precision( 2 ); m_os << elapsed() << " s"; if (m_putnewline) m_os << std::endl; m_os.flags( old_flags ); m_os.precision( old_prec ); } catch (...) {} } private: std::ostream & m_os; bool m_putnewline; }; -- Pavel Chikulaev

1 0

[boost::serialization] - serialization + shared_ptrs
by Martin Slater 09 Apr '05

09 Apr '05

Hi there, After fixing header include orders for the umpteenth time to ensure boost/serialization/shared_ptr.hpp is included before shared_ptr.hpp so it can do it's #define private public hack I wondered if this was any closer to an acceptable resolution? I know this is brought up periodcally but it really needs to be sorted out in someway, currently I have just hacked my local boost source to make shared_ptr's private declarations public to avoid the issue but obviously this is far from ideal. Thanks Martin

7 23

[Boost-bugs] [ boost-Bugs-1179641 ] boost::pool_allocator breaks with vector of vectors
by SourceForge.net 09 Apr '05

09 Apr '05

Bugs item #1179641, was opened at 2005-04-09 00:46 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1179641&group_… Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Greg Rosenblatt (glr9940) Assigned to: Nobody/Anonymous (nobody) Summary: boost::pool_allocator breaks with vector of vectors Initial Comment: The resulting executable built with the following code under GCC 3.3.5 produces a segmentation fault when run: Note that switching the definition of EventVector to use a vector with a standard allocator will fix the problem. Also note that the definition of IndexVector doesn't seem to matter. #include <boost/pool/pool_alloc.hpp> #include <vector> #include <iostream> template <typename DataType> struct PooledVector { typedef std::vector<DataType, boost::pool_allocator<DataType> > Type; }; typedef PooledVector<int>::Type EventVector; //typedef std::vector<int> EventVector; //typedef PooledVector<EventVector>::Type IndexVector; typedef std::vector<EventVector> IndexVector; int main() { IndexVector iv; iv.push_back(EventVector()); iv.back().push_back(3); std::cout << "it works\n"; return 0; } ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1179641&group_… ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

1 0

resolving a string to a type
by George M. Garner Jr. 09 Apr '05

09 Apr '05

Does boost provide a standard way to resolve a string to a type within a typelist? Regards, George.

1 0

[Boost-bugs] [ boost-Bugs-1179501 ] tools/bcp/bcp_imp.cpp (unknown identifier getline)
by SourceForge.net 08 Apr '05

08 Apr '05

Bugs item #1179501, was opened at 2005-04-08 22:13 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1179501&group_… Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: squeeze (sqzme) Assigned to: Nobody/Anonymous (nobody) Summary: tools/bcp/bcp_imp.cpp (unknown identifier getline) Initial Comment: 108: while (getline(in, line)) { produces a linker error. Should be: 108: while (std::getline(in, line)) { ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1179501&group_… ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

1 0

[serialization1.32]:VC7.1 error C2039: 'integral_c_tag' : n'est pas membre de 'boost::mpl'
by Francis ANDRE 08 Apr '05

08 Apr '05

Hi Robert I got this error from error C2039: 'integral_c_tag' : n'est pas membre de 'boost::mpl' Here the beginning of level.hpp I got: ---------------------------------------------------------------------------- ------ #include <boost/mpl/int.hpp> #include <boost/mpl/integral_c.hpp> #include <boost/serialization/level_enum.hpp> #include <boost/serialization/traits.hpp> namespace boost { namespace serialization { // default serialization implementation level template<class T> struct implementation_level { template<class U> struct traits_class_level { typedef BOOST_DEDUCED_TYPENAME U::level type; }; typedef mpl::integral_c_tag tag; // <== problem here // #if BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(600)) // typedef ---------------------------------------------------------------------------- -------- >From what I check of the latest HEAD release from CVS, it should be integral_c instead of integral_c_tag?? Regards FA

2 1

[serialization] exception in destructor
by Vyacheslav E. Andrejev 08 Apr '05

08 Apr '05

Hello Robert, I spent a lot of time trying to understand where my program failed. Finally, I found that the cause was in destructor of basic_xml_oarchive class: template<class Archive> #if !defined(__BORLANDC__) BOOST_DECL_ARCHIVE_OR_WARCHIVE #endif basic_xml_oarchive<Archive>::~basic_xml_oarchive(){ if(!header) return; this->This()->put("</boost_serialization>\n"); } basic_text_oprimitive::put(const char * s) can throw an exception, causing unexpected termination of program when stack unwind. I heard many times that uncaught exception in destructor is not very good thing. Should we consider refactoring of this point in basic_xml_oarchive? Regards. Slava. -- Vyacheslav E. Andrejev System Architect, Excelsior, LLC

2 1

Bug in posix_time::ptime documentation?
by Wolfgang Fertsak 08 Apr '05

08 Apr '05

I don't know if this has been reported already, but in the ptime-class documentation (boost_1_32_0/doc/html/date_time/posix_time.html) in the section "Construct from Clock" is a list of the three construction functions second_clock::local_time() second_clock::universal_time() microsec_clock::local_time() The example for second_clock::universal_time() shows a call of second_clock::universal_day() - which will not compile. Kind regards, Wolfgang

2 1

Re: Logo Contest tally
by Jason Hise 08 Apr '05

08 Apr '05

Apologies to all, my program had a bug and called the winner far too soon. A corrected version is attached, and the winner should come out to 67b. -Jason #include <string> #include <vector> #include <list> #include <map> #include <iostream> using namespace std; int main ( ) { string s; list < string > vote; vector < list < string > > votes; map < string, size_t > candidates; while ( true ) { getline ( cin, s ); if ( cin.eof ( ) ) { if ( !vote.empty ( ) ) votes.push_back ( vote ); break; } if ( s == "vote:" ) { if ( !vote.empty ( ) ) { votes.push_back ( vote ); vote.clear ( ); } } else { candidates.insert ( map < string, size_t >::value_type ( s, 0 ) ); vote.push_back ( s ); } } bool winner = false; size_t min_votes; map < string, size_t >::iterator c_iter, c_next; vector < list < string > >::iterator vl_iter; while ( !winner ) { c_iter = candidates.begin ( ); while ( c_iter != candidates.end ( ) ) { cout << "clearing votes for " << c_iter->first << endl; c_iter->second = 0; ++c_iter; } vl_iter = votes.begin ( ); while ( vl_iter != votes.end ( ) ) { list < string >::iterator v_iter ( vl_iter->begin ( ) ); while ( v_iter != vl_iter->end ( ) ) { c_iter = candidates.find ( *v_iter ); if ( c_iter != candidates.end ( ) ) { ++( c_iter->second ); break; } ++v_iter; } ++vl_iter; } c_iter = candidates.begin ( ); min_votes = c_iter->second; winner = true; while ( c_iter != candidates.end ( ) ) { cout << c_iter->first << " has a total of " << c_iter->second << " votes" << endl; if ( c_iter->second != min_votes ) { winner = false; } if ( c_iter->second < min_votes ) { min_votes = c_iter->second; } ++c_iter; } if ( winner ) { if ( candidates.size ( ) > 1 ) { cout << endl << "TIE, WINNERS WERE:" << endl; } else { cout << endl << "WINNER:" << endl; } } c_iter = candidates.begin ( ); while ( c_iter != candidates.end ( ) ) { c_next = c_iter; ++c_next; if ( winner ) { cout << c_iter->first << endl; } else if ( c_iter->second == min_votes ) { cout << c_iter->first << " has been removed from the running" << endl; candidates.erase ( c_iter ); } c_iter = c_next; } } return 0; }

1 0