From 606b10c51116e753b4d6d54a913d7482255f2345 Mon Sep 17 00:00:00 2001
From: Andy Heninger <andy.heninger@gmail.com>
Date: Mon, 10 Feb 2003 22:57:39 +0000
Subject: [PATCH] ICU-2703 fix missing null termination on extract from zero
 length UnicodeString

X-SVN-Rev: 11006
---
 icu4c/source/common/unistr.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/icu4c/source/common/unistr.cpp b/icu4c/source/common/unistr.cpp
index c97708de96..198b25ce3c 100644
--- a/icu4c/source/common/unistr.cpp
+++ b/icu4c/source/common/unistr.cpp
@@ -1514,7 +1514,12 @@ UnicodeString::extract(int32_t start,
 
   // just write the NUL if the string length is 0
   if(length == 0) {
-    return u_terminateChars(target, dstSize, 0, &status);
+      if(dstSize >= 0x80000000) {  
+          // careful: dstSize is unsigned! (0xffffffff means "unlimited")
+          // make sure that the NUL-termination works (takes int32_t)
+          dstSize=0x7fffffff;
+      }
+      return u_terminateChars(target, dstSize, 0, &status);
   }
 
   // if the codepage is the default, use our cache