[Boost-bugs] [Boost C++ Libraries] #8301: filesystem::canonical() has a race condition on Windows 7

Subject: [Boost-bugs] [Boost C++ Libraries] #8301: filesystem::canonical() has a race condition on Windows 7
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-03-18 02:43:58

#8301: filesystem::canonical() has a race condition on Windows 7
------------------------------+---------------------------------------------
 Reporter:  y.hoshizuki       |       Owner:  bemandawes
     Type:  Bugs              |      Status:  new       
Milestone:  To Be Determined  |   Component:  filesystem
  Version:  Boost 1.51.0      |    Severity:  Problem   
 Keywords:                    |  
------------------------------+---------------------------------------------
 read_symlink() often throws a exception.

 to confirm this problem, please compile and run the attached file.

 i think it caused by read_symlink() opening a file exclusively.

 {{{
     handle_wrapper h(
       create_file_handle(p.c_str(), GENERIC_READ, 0, 0, OPEN_EXISTING,
         FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, 0));
 }}}

 FILE_SHARE_READ argument resolves this problem, isn't it?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8301>
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