<stdout>: commitAndReleaseBuffer: invalid argument (invalid character)

I get the following error...

<stdout>: commitAndReleaseBuffer: invalid argument (invalid character)

When running following program:

   {-# LANGUAGE OverloadedStrings #-}

import qualified Data.Text    as T
import qualified Data.Text.IO as T

main = T.putStrLn "čušpajž日本語"

Was tested in #haskell and I have all the UTF-8 Settings set and so forth. It compiles just fine, but crashes during runtime.

gcc -v:

Reading specs from /usr/lib/gcc-lib/amd64-unknown-openbsd5.4/4.2.1/specs
Target: amd64-unknown-openbsd5.4
Configured with: OpenBSD/amd64 system compiler
Thread model: posix
gcc version 4.2.1 20070719

Trac metadata

Trac field	Value
Version	7.6.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	teodor_spaeren@riseup.net
Operating system	OpenBSD
Architecture	x86_64 (amd64)