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-rw-r--r--libraries/base/System/IO.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/libraries/base/System/IO.hs b/libraries/base/System/IO.hs
index 57db1b024e..31aa0e88c6 100644
--- a/libraries/base/System/IO.hs
+++ b/libraries/base/System/IO.hs
@@ -241,7 +241,9 @@ import Data.Bits
import Data.List
import Data.Maybe
import Foreign.C.Error
+#ifdef mingw32_HOST_OS
import Foreign.C.String
+#endif
import Foreign.C.Types
import System.Posix.Internals
import System.Posix.Types