On Mon, 5 Nov 2018, Nikolay Sivov wrote: [...]
It's true that it's not a new failure, I've seen testbot report it many times for sent patches. Don't know about full test results.
I found why the test fails on wvistau64. From the description of the configuration for that VM:
Running tests from E: drive.
The tests are run from E:\ which is an empty drive so it has no subfolders and no '..' parent directory. This is why LB_DIR fails when asked to only return directories.
So comctl32:listbox requires to be run in a path with either a '..' parent directory or some subdirectory (despite stating the opposite in a comment). Such a requirement is wrong.
And the reason it does not fail during the full test suite must be that some previous test leaves directories behind.
So comctl32:listbox is broken. And some other test is broken too.