[Boost-bugs] [Boost C++ Libraries] #11138: filesystem::path::canonical() failed with junction points on Windows

Subject: [Boost-bugs] [Boost C++ Libraries] #11138: filesystem::path::canonical() failed with junction points on Windows
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-03-24 14:48:38

#11138: filesystem::path::canonical() failed with junction points on Windows
-----------------------------------------+------------------------
 Reporter:  yanggehua@…                  |      Owner:  bemandawes
     Type:  Bugs                         |     Status:  new
Milestone:  To Be Determined             |  Component:  filesystem
  Version:  Boost 1.57.0                 |   Severity:  Problem
 Keywords:  filesystem, path, canonical  |
-----------------------------------------+------------------------
 Hi,

 In my recent use of filesystem in Boost 1.57, the call of
 path::canonical() on Windows 7 returns an invalid path if part of the path
 in question is a junction point.

 This failure can be reproduced with the following code:
 {{{#!C++
   // "C:\Gehua" is a junction point of "D:\Gehua"
   fs::path work("d:/Gehua/work");
   fs::path work_canonical(fs::canonical(work));
   std::wstring s = fs::canonical(work_canonical).native();
   // True path passes
   assert(s == L"d:/Gehua\\work");

   // try the junction path
   fs::path work_junction("c:/Gehua/work");
   // this passes
   assert(fs::exists(work_junction));

   s = fs::canonical(work_junction).native();
   // this one fails!
   // s has value "c:/Gehua\\Gehua\\work"
   assert(s == L"d:/Gehua\\work");
 }}}

 The call returned a value of "c:/Gehua\\Gehua\\work", which was wrong.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11138>
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