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-rw-r--r--compiler/utils/StringBuffer.lhs5
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler/utils/StringBuffer.lhs b/compiler/utils/StringBuffer.lhs
index 2b3b775791..869cb8ac84 100644
--- a/compiler/utils/StringBuffer.lhs
+++ b/compiler/utils/StringBuffer.lhs
@@ -138,8 +138,9 @@ appendStringBuffers sb1 sb2
calcLen sb = len sb - cur sb
size = sb1_len + sb2_len
-stringToStringBuffer :: String -> IO StringBuffer
-stringToStringBuffer str = do
+stringToStringBuffer :: String -> StringBuffer
+stringToStringBuffer str =
+ unsafePerformIO $ do
let size = utf8EncodedLength str
buf <- mallocForeignPtrArray (size+3)
withForeignPtr buf $ \ptr -> do