Re: [Boost-bugs] [Boost C++ Libraries] #7606: u32regex causes bus error

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7606: u32regex causes bus error
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-11-30 16:14:35

#7606: u32regex causes bus error
-----------------------------------------+----------------------------------
  Reporter:  a.sanders@…                 |       Owner:  johnmaddock
      Type:  Bugs                        |      Status:  new        
 Milestone:  To Be Determined            |   Component:  regex      
   Version:  Boost 1.51.0                |    Severity:  Problem    
Resolution:                              |    Keywords:             
-----------------------------------------+----------------------------------

Comment (by Ashley Sanders <a.sanders@…>):

 Here you are. Not sure that this looks helpful. At the "if" statement
 following the "a" construction took the true branch.

 I'm not setting any compiler code page anywhere.

 {{{
 Breakpoint 2 at 0x15738: file
 /export/home/ashley/src/boost_1_51_0/boost/regex/v4/basic_regex.hpp, line
 399.
 (gdb) run
 The program being debugged has been started already.
 Start it from the beginning? (y or n) y
 Starting program: /export/home/ashley/tmp/regex
 [Thread debugging using libthread_db enabled]
 [New Thread 1 (LWP 1)]
 [Switching to Thread 1 (LWP 1)]

 Breakpoint 2, boost::basic_regex<int,
 boost::icu_regex_traits>::basic_regex<boost::u8_to_u32_iterator<char
 const*, int> > (
     this=0xffbffab0, arg_first=..., arg_last=..., f=0) at
 /export/home/ashley/src/boost_1_51_0/boost/regex/v4/basic_regex.hpp:400
 400        {
 (gdb) list
 395           assign(p, f);
 396        }
 397
 398        template <class InputIterator>
 399        basic_regex(InputIterator arg_first, InputIterator arg_last,
 flag_type f = regex_constants::normal)
 400        {
 401           typedef typename traits::string_type seq_type;
 402           seq_type a(arg_first, arg_last);
 403           if(a.size())
 404              assign(static_cast<const charT*>(&*a.begin()),
 static_cast<const charT*>(&*a.begin() + a.size()), f);
 (gdb) n
 402           seq_type a(arg_first, arg_last);
 (gdb) n
 403           if(a.size())
 (gdb) print a
 $1 = {<std::_Vector_base<int, std::allocator<int> >> = {
     _M_impl = {<std::allocator<int>> = {<__gnu_cxx::new_allocator<int>> =
 {<No data fields>}, <No data fields>}, _M_start = 0x27cd0,
       _M_finish = 0x27d00, _M_end_of_storage = 0x27d00}}, <No data
 fields>}
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7606#comment:7>
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