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-rw-r--r--testsuite/tests/lib/IO/hSetEncoding002.hs13
1 files changed, 13 insertions, 0 deletions
diff --git a/testsuite/tests/lib/IO/hSetEncoding002.hs b/testsuite/tests/lib/IO/hSetEncoding002.hs
new file mode 100644
index 0000000000..35c4e1ce19
--- /dev/null
+++ b/testsuite/tests/lib/IO/hSetEncoding002.hs
@@ -0,0 +1,13 @@
+-- test for #4066
+
+import System.IO
+
+import GHC.IO.FD as FD (stdout)
+import GHC.IO.Handle.FD as FD (fdToHandle)
+import GHC.IO.Handle ( mkDuplexHandle )
+
+main = do
+ h <- mkDuplexHandle FD.stdout "stdout" Nothing noNewlineTranslation
+ hSetEncoding h utf8
+ hPutStrLn h "รถ"
+ hClose h