From 84680daef7dc4848fff40f8e26b5d7ccebadb8cb Mon Sep 17 00:00:00 2001
From: Gerd Moellmann <gerd@gnu.org>
Date: Mon, 20 Nov 2000 17:24:12 +0000
Subject: [PATCH] (MAP_FAILED): Define it as `((void *) -1)' if it's not
 defined in mman.h.

---
 src/buffer.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/buffer.c b/src/buffer.c
index 1e31c93ea5c..09732cc9bc9 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -4078,6 +4078,10 @@ buffer_slot_type_mismatch (offset)
 #endif
 #endif
 
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *) -1)
+#endif
+
 #include <stdio.h>
 #include <errno.h>
 
-- 
2.30.2