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-rw-r--r--testsuite/tests/lib/IO/hSetBuffering004.hs9
1 files changed, 9 insertions, 0 deletions
diff --git a/testsuite/tests/lib/IO/hSetBuffering004.hs b/testsuite/tests/lib/IO/hSetBuffering004.hs
new file mode 100644
index 0000000000..eaee6826d2
--- /dev/null
+++ b/testsuite/tests/lib/IO/hSetBuffering004.hs
@@ -0,0 +1,9 @@
+-- test for #2678
+module Main (main) where
+
+import System.IO
+
+main :: IO ()
+main = do hSetBuffering stdin NoBuffering
+ hLookAhead stdin >>= print
+ hSetBuffering stdin LineBuffering