Windows test failures

Roland Senn rsx at
Mon Dec 3 15:34:58 UTC 2018

Hi Tamar,
I looked into the testcases 'plugins09', 'plugins10' and 'plugins11'
and found the following: GHC-Windows uses BufferMode 'BlockBuffering
Nothing', however, GHC-Linux uses 'LineBuffering'.
If I add an 'import System.IO' and the line 'liftIO $ hSetBuffering
stdout LineBuffer' as first line in the do block of the function
plugin/Simple/SourcePlugin.hs:parsedPlugin' then all 3 tests pass
successfully on Windows!
I don't know anything about the "Why" and "Where" in the GHC IO module
on Windows, so I'm unable to come up with a patch.
Regards   Roland
PS: I can't say anything about the tests 'plugin-recomp-pure' and
'plugin-recomp-impure' as these tests run successfully on my (slow)
Windows box.
Am Sonntag, den 02.12.2018, 20:42 +0000 schrieb Phyx:
> Hi Simon,
> That's a bit better (still need to figure out why the recent
> threading issues, but one problem at a time :) )
> From that list T10672_x64 is one I'm looking at already, seems to
> have something to do with the libstdc++ destructors.
> Plugins 09 and 10 are the other two I know about, but haven't had
> time to look at them yet. Frankly I know too little about plugins to
> make an accurate determination here, but the input files are empty
> yet it expects output, so I don't know what it's supposed to do
> here.  If someone who knows more about plugins can chime in that
> would save some time.
> The segfaulting plugin I haven't triaged yet. Now the remaining
> failures aside from T14452 that Roland is taking care of, seem to
> have to do with your locale in your console.  You seem to be running
> the
> tests in a console that has latin-1 locale? So some unicode
> characters fail encoding/decoding.
> If it's a Windows shell you can change it to utf-8 using "chcp 
> 65001", if it's an msys2 shell, what does "locale" return?
> For reference mine is
> $ locale
> LANG=en_GB.UTF-8
> LC_CTYPE="en_GB.UTF-8"
> LC_TIME="en_GB.UTF-8"
> If it does say latin1 you can change it with
> export 
> LANG=en_GB.UTF-8 
> This should fix more of the tests.
> The reason I don't mark the remaining tests as expect fail yet is
> because I haven't had the time to triage them, so I don't know their
> severity and
> last time there were a few nasty issues hidden in them.
> Unfortunately I won't have time to look at them till next weekend.
> Thanks,
> Tamar
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