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Diffstat (limited to 'ghc/rts/hooks/ErrorHdr.c')
-rw-r--r--ghc/rts/hooks/ErrorHdr.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/ghc/rts/hooks/ErrorHdr.c b/ghc/rts/hooks/ErrorHdr.c
index 2797ca4f90..0f253d3aa4 100644
--- a/ghc/rts/hooks/ErrorHdr.c
+++ b/ghc/rts/hooks/ErrorHdr.c
@@ -1,5 +1,5 @@
/* -----------------------------------------------------------------------------
- * $Id: ErrorHdr.c,v 1.2 1998/12/02 13:29:11 simonm Exp $
+ * $Id: ErrorHdr.c,v 1.3 2002/07/17 09:21:51 simonmar Exp $
*
* User-overridable RTS hooks.
*
@@ -7,6 +7,10 @@
#include "Rts.h"
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
void
ErrorHdrHook (long fd)
{