hg: jdk8/tl/jdk: 8016252: More defensive HashSet.readObject

[brian.burkhalter at oracle.com]

Changeset: b86e6700266e
Author:    bpb
Date:      2013-10-09 11:47 -0700
URL:       http://hg.openjdk.java.net/jdk8/tl/jdk/rev/b86e6700266e

8016252: More defensive HashSet.readObject
Summary: Add data validation checks in readObject().
Reviewed-by: alanb, mduigou, chegar
Contributed-by: Brian Burkhalter <brian.burkhalter at oracle.com>

! src/share/classes/java/util/HashSet.java
+ test/java/util/HashSet/Serialization.java