[Boost-bugs] [Boost C++ Libraries] #3579: [ptr_container] ptr_vector<T>::resize creates uninitialized objects if T is a POD

Subject: [Boost-bugs] [Boost C++ Libraries] #3579: [ptr_container] ptr_vector<T>::resize creates uninitialized objects if T is a POD
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-10-29 15:31:46

#3579: [ptr_container] ptr_vector<T>::resize creates uninitialized objects if T is
a POD
-----------------------------------------+----------------------------------
 Reporter:  roman.perepelitsa@…          |       Owner:         
     Type:  Bugs                         |      Status:  new    
Milestone:  Boost 1.41.0                 |   Component:  None   
  Version:  Boost 1.40.0                 |    Severity:  Problem
 Keywords:  ptr_container, ptr_vector    |  
-----------------------------------------+----------------------------------
 ptr_vector<T>::resize creates new objects using 'new T' instead of 'new
 T()', which results in uninitialized objects if T is a POD. For
 consistency with STL containers (std::vector in particular) all PODs must
 be explicitly initialized.

 Test:
 #include <cassert>

 #include <boost/ptr_container/ptr_vector.hpp>

 int main()
 {
     boost::ptr_vector<int> v;

     v.resize(1);

     assert(v[0] == 0);  // Might fail.
 }

 ptr_circullar_buffer has the same problem.

 I'm attaching a patch that fixes the problem.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3579>
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