[kde-windows] [Bug 388280] New: QFileDialog::getExistingDirectoryUrl hangs on 'this pc' (binary factory build)

[Harald Sitter]

https://bugs.kde.org/show_bug.cgi?id=388280

            Bug ID: 388280
           Summary: QFileDialog::getExistingDirectoryUrl hangs on 'this
                    pc' (binary factory build)
           Product: kde-windows
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: porting
          Assignee: kde-windows at kde.org
          Reporter: sitter at kde.org
  Target Milestone: ---

- download filelight from factory
- install
- start
- click 'open'
- dir open dialog comes up
- select 'this pc' from the left hand side pane
- click 'select folder' to confirm that selection
- filelight gets deadlocked
- debug output shows the following: Unable to create a local copy of
QShellItem(attributes=0xb0000174 [dir], normalDisplay="This PC",
desktopAbsoluteParsing="::{20D04FE0-3AEA-1069-A2D8-08002B30309D}")
- after that the app actually seems to be stuck in the event loop poll

I am not entirely sure why that would happen. The copy error seems to come out
of the windows platform plugin, but I can't seem to reproduce this with a local
qt 5.7 mingw32-cross-build from linux (which simply doesn't open anything) nor
with a minimal `QFileDialog::getExistingDirectoryUrl()` example built with the
mingw 5.3 of the qt 5.10 sdk (which raises the windows native error "You can't
open this location using this program [...]").

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