RFR: 8276241: JVM does not flag constant class entries ending in '/'

[Harold Seigel]

Please review this small fix for JDK-8276241.  The fix ensures that a ClassFormatError exception gets thrown for classes whose name ends in a '/' and are class file version less than 49 (JDK 1.5).  (A CFE already gets thrown for newer class file versions.)  The regression test class was written using a byte array because neither jcod nor jasm could handle a class name ending in '/'.

The fix was tested by running JCK lang and VM tests on Linux x64, Mach5 tiers 1-2 on Linux, Mac OS, and Windows, and Mach5 tiers 3-5 on Linux x64.

Thanks, Harold

-------------

Commit messages:
 - 8276241: JVM does not flag constant class entries ending in '/'

Changes: https://git.openjdk.java.net/jdk/pull/6678/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6678&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276241
  Stats: 87 lines in 2 files changed: 84 ins; 1 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6678.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6678/head:pull/6678

PR: https://git.openjdk.java.net/jdk/pull/6678