1 files changed, 27 insertions, 0 deletions
diff --git a/testsuite/tests/lib/IO/encodingerror001.hs b/testsuite/tests/lib/IO/encodingerror001.hs
new file mode 100644
index 0000000000..327b490adb
--- /dev/null
+++ b/testsuite/tests/lib/IO/encodingerror001.hs
@@ -0,0 +1,27 @@
+import System.IO
+import System.IO.Error
+import Text.Printf
+import Control.Monad
+
+main = do
+  hSetEncoding stdout latin1
+  forM [NoBuffering,
+        LineBuffering,
+        BlockBuffering Nothing,
+        BlockBuffering (Just 3),
+        BlockBuffering (Just 9),
+        BlockBuffering (Just 32)] $ \b -> do
+     hSetBuffering stdout b
+     checkedPutStr "test 1\n"
+     checkedPutStr "ě\n" -- nothing gets written
+     checkedPutStr "test 2\n"
+     checkedPutStr "Hέllo\n" -- we should write at least the 'H'
+     checkedPutStr "test 3\n"
+     checkedPutStr "Hello αβγ\n" -- we should write at least the "Hello "
+
+checkedPutStr str = do
+  r <- try $ putStr str
+  case r of
+    Right _ -> return ()
+    Left  e -> printf "Caught %s while trying to write %s\n"
+                  (show e) (show str)