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-rw-r--r--tests/runtests.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/runtests.hs b/tests/runtests.hs
index 7fadf8a4..480a0961 100644
--- a/tests/runtests.hs
+++ b/tests/runtests.hs
@@ -61,7 +61,7 @@ testDir libdir dir = do
let mods' = map (dir </>) mods
let outdir = "output" </> dir
createDirectoryIfMissing True outdir
- code <- system $ printf "../dist/build/haddock/haddock -B %s -o %s -h --optghc=-fglasgow-exts %s" libdir outdir (unwords mods')
+ code <- system $ printf "../dist/build/haddock/haddock -B %s -o %s -h --optghc=-fglasgow-exts --optghc=-w %s" libdir outdir (unwords mods')
unless (code == ExitSuccess) $ error "Haddock run failed! Exiting."
check mods'
walkDirs libdir dir