From 15e647793280e42824adf4b7021395ce8cd5874e Mon Sep 17 00:00:00 2001
From: Christoph von Wittich <christoph_vw@reactos.org>
Date: Wed, 17 Sep 2008 14:03:05 +0000
Subject: [PATCH] fix a kernel32 environ winetest

svn path=/trunk/; revision=36285
---
 reactos/dll/win32/kernel32/misc/env.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/reactos/dll/win32/kernel32/misc/env.c b/reactos/dll/win32/kernel32/misc/env.c
index c4f0ee25ae8..ab6c2d7a1c4 100644
--- a/reactos/dll/win32/kernel32/misc/env.c
+++ b/reactos/dll/win32/kernel32/misc/env.c
@@ -425,6 +425,10 @@ ExpandEnvironmentStringsA (
             return 0;
         }
 
+    /* make sure we don't overflow the maximum ANSI_STRING size */
+    if (nSize > 0x7fff)
+        nSize = 0x7fff;
+
 	Destination.Length = 0;
 	Destination.MaximumLength = (USHORT)nSize;
 	Destination.Buffer = lpDst;
@@ -491,6 +495,10 @@ ExpandEnvironmentStringsW (
 	RtlInitUnicodeString (&Source,
 	                      (LPWSTR)lpSrc);
 
+    /* make sure we don't overflow the maximum UNICODE_STRING size */
+    if (nSize > 0x7fff)
+        nSize = 0x7fff;
+
 	Destination.Length = 0;
 	Destination.MaximumLength = (USHORT)nSize * sizeof(WCHAR);
 	Destination.Buffer = lpDst;