From b8b164bb7332e26efae6d422403dafb8fae06e15 Mon Sep 17 00:00:00 2001
From: George Rhoten <grhoten@users.noreply.github.com>
Date: Tue, 25 May 2004 23:36:03 +0000
Subject: [PATCH] ICU-3718 Don't read before the array (Fix from Ram)

X-SVN-Rev: 15547
---
 icu4c/source/common/uidna.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/icu4c/source/common/uidna.cpp b/icu4c/source/common/uidna.cpp
index edc95417ba3..4fdb5521818 100644
--- a/icu4c/source/common/uidna.cpp
+++ b/icu4c/source/common/uidna.cpp
@@ -402,7 +402,7 @@ _internal_toUnicode(const UChar* src, int32_t srcLength,
             }
             srcLength++;
         }
-    }else{
+    }else if(srcLength > 0){
         for(int32_t j=0; j<srcLength; j++){
             if(src[j]> 0x7f){
                 srcIsASCII = FALSE;
@@ -414,6 +414,8 @@ _internal_toUnicode(const UChar* src, int32_t srcLength,
                 failPos = j;
             }
         }
+    }else{
+        return 0;
     }
 
     if(srcIsASCII == FALSE){