hg: jdk/jdk: 8020637: Permissions.readObject doesn't enforce proper Class to PermissionCollection mappings

[sean.mullan at oracle.com]

Changeset: 89295131e353
Author:    mullan
Date:      2019-04-09 08:56 -0400
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/89295131e353

8020637: Permissions.readObject doesn't enforce proper Class to PermissionCollection mappings
Reviewed-by: weijun

! src/java.base/share/classes/java/security/Permissions.java
+ test/jdk/java/security/Permissions/DeserializeInvalidPermissions.java