[Boost-bugs] [Boost C++ Libraries] #1232: mapped_file_source::is_open() is broken under windows

Subject: [Boost-bugs] [Boost C++ Libraries] #1232: mapped_file_source::is_open() is broken under windows
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2007-09-04 21:59:52

#1232: mapped_file_source::is_open() is broken under windows
-------------------------------------+--------------------------------------
 Reporter:  royalstream_at_[hidden]  |       Owner:  dgregor  
     Type:  Bugs                     |      Status:  new      
Milestone:  To Be Determined         |   Component:  iostreams
  Version:  Boost 1.34.1             |    Severity:  Problem  
 Keywords:                           |  
-------------------------------------+--------------------------------------
 Under windows, '''mapped_file_impl::handle_''' gets set to
 '''INVALID_HANDLE_VALUE''' when the file gets closed or on error.
 But '''mapped_file_source::is_open()''' incorrectly assumes that if the
 handle is invalid it will have a value of zero and it doesn't consider
 '''INVALID_HANDLE_VALUE''' a possibility.
 Obviously, adding '''INVALID_HANDLE_VALUE''' to
 '''mapped_file_source::is_open()''' would be poor design. A better way
 would be to explose a '''mapped_file_impl::is_valid()''' method that works
 as it should depending on the platform and have
 '''mapped_file_source::is_open()''' call it.

 Regards,

 Steven Burns

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/1232>
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