diff options
Diffstat (limited to 'src/Utility/ConcurrentOutput.hs')
| -rw-r--r-- | src/Utility/ConcurrentOutput.hs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/Utility/ConcurrentOutput.hs b/src/Utility/ConcurrentOutput.hs index 301a89bc..03771bfd 100644 --- a/src/Utility/ConcurrentOutput.hs +++ b/src/Utility/ConcurrentOutput.hs @@ -83,7 +83,11 @@ takeOutputLock' block = go =<< withLock tryTakeTMVar ( havelock , if block then do + hPutStr stderr "WAITFORPROCESS in lock" + hFlush stderr void $ P.waitForProcess h + hPutStr stderr "WAITFORPROCESS in lock done" + hFlush stderr havelock else do withLock (`putTMVar` orig) |