Fix #216: need to retain or recalculate need for rehashing (chose to recalc when unsharing)

Author: cowtowncoder

release-notes/VERSION

@@ -18,6 +18,8 @@ JSON library.
 
 #213: Parser is sometimes wrong when using CANONICALIZE_FIELD_NAMES
  (reported by ichernev@github)
+#216: ArrayIndexOutOfBoundsException: 128 when repeatedly serializing to a byte array
+ (reported by geekbeast@github)
 
 2.6.1 (09-Aug-2015)
 

src/main/java/com/fasterxml/jackson/core/sym/ByteQuadsCanonicalizer.java

@@ -877,12 +877,15 @@ private void _verifySharing()
             _hashArea = Arrays.copyOf(_hashArea, _hashArea.length);
             _names = Arrays.copyOf(_names, _names.length);
             _hashShared = false;
+            // 09-Sep-2015, tatu: As per [jackson-core#216], also need to ensure
+            //    we rehash as needed, as need-rehash flag is not copied from parent
+            _verifyNeedForRehash();
         }
         if (_needRehash) {
             rehash();
         }
     }
-    
+
     /**
      * Method called to find the location within hash table to add a new symbol in.
      */