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  1. Qt
  2. QTBUG-27092

QDir::canonicalPath() on Windows returns empty string for existing directories in some cases

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Details

    • Bug
    • Resolution: Unresolved
    • Not Evaluated
    • None
    • 4.8.5
    • Core: I/O
    • None
    • Windows 7 x64, Qt build for MSVC 2008 32-bit
    • Windows

    Description

      QDir::canonicalPath() on Windows returns empty string if that directory has been just created. Attaching a testcase. I tried it also on Linux x86_64 and it worked as expected.

      I consider this bug somewhat serious. There was code in my application that I acknowledge it wasn't ideal, but it relied on QDir::canonicalPath() returning actual path to the directory after successful QDir::mkpath(). I didn't test it thoroughly on Windows (only on Linux) and it caused data loss bugs for my Windows users.

      Attachments

        1. qtbug27092.tar
          10 kB
        2. qtbug27092_diag5.patch
          3 kB
        3. qtbug27092_diag4.patch
          3 kB
        4. qdir_test.cpp
          0.7 kB

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-25811 QFileInfo::lastModified returning wrong value for non-existing file

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed
          For Gerrit Dashboard: QTBUG-27092
          # Subject Branch Project Status CR V
          97736,2 Windows: No longer use cached Exists-attribute in QFileSystemEngine::canonicalName(). 5.4 qt/qtbase Status: DEFERRED 0 0

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            People

              kleint Friedemann Kleint
              beevvy Bartosz Brachaczek
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              Dates

                Created:
                Updated:

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