[Boost-bugs] [Boost C++ Libraries] #8724: bad_alloc thrown in empty list copy constructor

Subject: [Boost-bugs] [Boost C++ Libraries] #8724: bad_alloc thrown in empty list copy constructor
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-06-24 18:36:37

#8724: bad_alloc thrown in empty list copy constructor
------------------------------+--------------------------
 Reporter:  gleonid@…         |      Owner:  igaztanaga
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  interprocess
  Version:  Boost 1.53.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+--------------------------
 I am running RHEL 5.[[BR]]

 Compiler - gcc 4.1.2[[BR]]

 following code fragment compiled against boost 1.53.0 throws bad_alloc
 exception at run time.[[BR]]

 Essentially I have an empty ::boost::container::list object allocated in
 shared memory (segment_manager from boost  interprocess).
 attempt to copy such empty list causes bad_alloc exception

 {{{
 #include <boost/interprocess/allocators/allocator.hpp>
 #include <boost/interprocess/managed_external_buffer.hpp>

 namespace
 {

 typedef ::boost::interprocess::allocator<int,
 ::boost::interprocess::managed_external_buffer::segment_manager>
 int_allocator;
 typedef ::boost::container::list<int, int_allocator> int_list;
 char g_memory_buf[1024];

 }

 int main()
 {
     ::boost::interprocess::managed_external_buffer
 segment(::boost::interprocess::create_only, g_memory_buf,
 sizeof(g_memory_buf));

     // 1. construct empty list
     int_list *l1 =
 segment.construct<int_list>("1")(int_allocator(segment.get_segment_manager()));

     // 2. use copy constructor
     segment.construct<int_list>("2")(*l1);

     return 0;
 }
 }}}

 when same code is compiled against boost 1.51.0 - no exceptions.
 I wonder if this behavioral change was intentional.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8724>
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