After updating Ubuntu to 6b41 I noticed that the new jtreg hotspot testcase 7116786 was failing with "Unsupported major.minor version 51.0". This is due to the classes under hotspot/test/runtime/7116786/testcases.jar being all compiled for Java 7.
The testcase was added by: http://hg.openjdk.java.net/jdk6/jdk6/hotspot/rev/6088554a147c Download testcases.jar directly from the repo @ http://hg.openjdk.java.net/jdk6/jdk6/hotspot/file/tip/test/runtime/7116786/testcases.jar As expected, this also affects the 6u41 tarball @ https://java.net/downloads/openjdk6/openjdk-6-src-b41-04_jan_2017.tar.xz Running 'file' on the unpacked jar file: $ file *.class case00.class: compiled Java class data, version 51.0 (Java 1.7) case01.class: compiled Java class data, version 51.0 (Java 1.7) case02.class: compiled Java class data, version 51.0 (Java 1.7) case03.class: compiled Java class data, version 51.0 (Java 1.7) case04.class: compiled Java class data, version 51.0 (Java 1.7) case05.class: compiled Java class data, version 51.0 (Java 1.7) ... I'm not an author so I'm unable to create a bug report. Regards, Tiago -- Tiago Stürmer Daitx Software Engineer tiago.da...@canonical.com PGP Key: 4096R/F5B213BE (hkp://keyserver.ubuntu.com) Fingerprint = 45D0 FE5A 8109 1E91 866E 8CA4 1931 8D5E F5B2 13BE