# HG changeset patch
# User Doug Simon <doug.simon@oracle.com>
# Date 1382003187 -7200
# Node ID b7fd9efe24c58eed14d152c70c1069f5819db780
# Parent  b11213c417692b1a2a13ef35b3185e5101622f50
prevent npe in Buffer.copyData() when Buffer.data is null

diff -r b11213c41769 -r b7fd9efe24c5 graal/com.oracle.graal.asm/src/com/oracle/graal/asm/Buffer.java
--- a/graal/com.oracle.graal.asm/src/com/oracle/graal/asm/Buffer.java	Thu Oct 17 10:52:56 2013 +0200
+++ b/graal/com.oracle.graal.asm/src/com/oracle/graal/asm/Buffer.java	Thu Oct 17 11:46:27 2013 +0200
@@ -56,10 +56,14 @@
     public byte[] close(boolean trimmedCopy) {
         byte[] result = trimmedCopy ? Arrays.copyOf(data, position()) : data;
         data = null;
+        position = 0;
         return result;
     }
 
     public byte[] copyData(int start, int end) {
+        if (data == null) {
+            return null;
+        }
         return Arrays.copyOfRange(data, start, end);
     }