RFR (XS) 8182847: Copy class should use assert macros

[Thomas Schatzl]

Hi,

On Fri, 2018-02-16 at 18:14 -0500, coleen.phillimore at oracle.com wrote:
> open webrev at http://cr.openjdk.java.net/~coleenp/8182847.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8182847
> 
> Tested with tier1-4 on all Oracle platforms in mach5.  Also tested 
> failure case with temporary change (see bug for details).

  looks good. Thanks for cleaning this up.

Thomas