Re: [Boost-bugs] [Boost C++ Libraries] #7814: Signal 6 coredump on lexical_cast with gcc option trapv

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7814: Signal 6 coredump on lexical_cast with gcc option trapv
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-12-23 15:50:56

#7814: Signal 6 coredump on lexical_cast with gcc option trapv
------------------------------------------------+---------------------------
  Reporter:  Bernd Raum <braum@…>               |       Owner:  apolukhin                        
      Type:  Bugs                               |      Status:  assigned                         
 Milestone:  To Be Determined                   |   Component:  lexical_cast                     
   Version:  Boost 1.51.0                       |    Severity:  Problem                          
Resolution:                                     |    Keywords:  lexical_cast long trapv core dump
------------------------------------------------+---------------------------

Comment (by apolukhin):

 Replying to [comment:4 alexey kutumov <alexey.kutumov@…>]:
 > Replying to [comment:3 apolukhin]:
 > > Fast fixes did not help, because even some functions from std
 namespace trigger coredump.
 >
 > Could you give example (related to lexical_cast) when coredump occurs

 It was some code like:
 {{{
 template <class T>
 void test_impl() {
     typedef std::numeric_limits<T> limits;
     boost::lexical_cast<std::string>((limits::min)());
     boost::lexical_cast<std::string>((limits::max)());
     // boost::lexical_cast<T>("lexical representation of limits::min or
 limits::max");
 }

 int main() {
     test_impl<int>();
     test_impl<unsigned int>();
     boost::lexical_cast<int>(0.0f); // Fails only on `clang -ftrapv`
 }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7814#comment:6>
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