[Boost-bugs] [Boost C++ Libraries] #4610: filesystem::file_size problem on Windows platform

Subject: [Boost-bugs] [Boost C++ Libraries] #4610: filesystem::file_size problem on Windows platform
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-08-29 15:52:05

#4610: filesystem::file_size problem on Windows platform
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 Reporter:  neo_in_matrix@…        |       Owner:  bemandawes
     Type:  Bugs                   |      Status:  new       
Milestone:  To Be Determined       |   Component:  filesystem
  Version:  Boost 1.44.0           |    Severity:  Problem   
 Keywords:                         |  
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 This is a subtle problem on Windows platform.

 I see that file_size calls GetFileAttributesEx to obtain file size - that
 works in a chance of 99.99%.

 What is the other 0.01%? It's like this - GetFileAttributes(Ex) does not
 work with system files, say c:\pagefile.sys. It will only return FALSE and
 GetLastError returns 32 (The process cannot access the file because it is
 being used by another process. )

 Instead, you have to call FindFirstFile which correctly reports file
 status in all cases.

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/4610>
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