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-rw-r--r--haddock-api/src/Haddock/Interface.hs11
1 files changed, 11 insertions, 0 deletions
diff --git a/haddock-api/src/Haddock/Interface.hs b/haddock-api/src/Haddock/Interface.hs
index 62b0aea9..cdc3064e 100644
--- a/haddock-api/src/Haddock/Interface.hs
+++ b/haddock-api/src/Haddock/Interface.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
-----------------------------------------------------------------------------
-- |
-- Module : Haddock.Interface
@@ -48,14 +49,20 @@ import qualified Data.Set as Set
import Distribution.Verbosity
import System.Directory
import System.FilePath
+import System.IO
import Text.Printf
import Digraph
import DynFlags hiding (verbosity)
import Exception
import GHC hiding (verbosity)
+#if defined(mingw32_HOST_OS)
+import GHC.IO.Encoding.CodePage (mkLocaleEncoding)
+import GHC.IO.Encoding.Failure (CodingFailureMode(TransliterateCodingFailure))
+#endif
import HscTypes
import FastString (unpackFS)
+import MonadUtils (liftIO)
-- | Create 'Interface's and a link environment by typechecking the list of
-- modules using the GHC API and processing the resulting syntax trees.
@@ -68,6 +75,10 @@ processModules
-> Ghc ([Interface], LinkEnv) -- ^ Resulting list of interfaces and renaming
-- environment
processModules verbosity modules flags extIfaces = do
+#if defined(mingw32_HOST_OS)
+ -- Avoid internal error: <stderr>: hPutChar: invalid argument (invalid character)' non UTF-8 Windows
+ liftIO $ hSetEncoding stderr $ mkLocaleEncoding TransliterateCodingFailure
+#endif
out verbosity verbose "Creating interfaces..."
let instIfaceMap = Map.fromList [ (instMod iface, iface) | ext <- extIfaces