From 42b1334cda9e8baed10d02e05f5edb445908e9af Mon Sep 17 00:00:00 2001
From: schmidt <douglascraigschmidt@users.noreply.github.com>
Date: Sun, 3 Jan 1999 23:44:10 +0000
Subject: .

---
 ace/Mem_Map.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'ace/Mem_Map.cpp')

diff --git a/ace/Mem_Map.cpp b/ace/Mem_Map.cpp
index e79a5cabf7e..aa0d54cb188 100644
--- a/ace/Mem_Map.cpp
+++ b/ace/Mem_Map.cpp
@@ -206,6 +206,11 @@ ACE_Mem_Map::map (LPCTSTR file_name,
                   mode,
                   sa) == -1)
     return -1;
+  else if (ACE_BIT_ENABLED (flags, O_CREAT)
+           && len <= 0)
+    // <mmap> will fail if the length of the file mapping is 0, which
+    // will be the case if we've just created the file.
+    return 0;
   else
     return this->map_it (this->handle (),
                          len,
-- 
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