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-rw-r--r--rts/RtsSymbols.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/rts/RtsSymbols.h b/rts/RtsSymbols.h
index 650b1f5fed..b17c56e0dd 100644
--- a/rts/RtsSymbols.h
+++ b/rts/RtsSymbols.h
@@ -25,3 +25,8 @@ typedef struct _RtsSymbolVal {
} RtsSymbolVal;
extern RtsSymbolVal rtsSyms[];
+
+/* See Note [_iob_func symbol]. */
+#if defined(mingw32_HOST_OS)
+extern const void* __rts_iob_func;
+#endif