hg: jdk9/dev/jdk: 8015081: javax.security.auth.Subject.toString() throws NPE

[anthony.scarpino at oracle.com]

Changeset: 36a0438a6631
Author:    ascarpino
Date:      2014-07-01 09:46 -0700
URL:       http://hg.openjdk.java.net/jdk9/dev/jdk/rev/36a0438a6631

8015081: javax.security.auth.Subject.toString() throws NPE
Reviewed-by: xuelei, weijun
Contributed-by: Jamil Nimeh <jamil.j.nimeh at oracle.com>

! src/share/classes/javax/security/auth/Subject.java
! test/javax/security/auth/Subject/Generic.java
! test/javax/security/auth/Subject/Serial.java
+ test/javax/security/auth/Subject/Subject.java
+ test/javax/security/auth/Subject/SubjectNullTests.java