The problem in 7u80 is caused by recent backport of JDK-8030976 changes [1].
https://bugs.openjdk.java.net/browse/JDK-8058107 http://cr.openjdk.java.net/~rbackman/8046289.3/ Review thread: http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2014-June/014889.html jdk9 changeset: http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/6ad207fd3e26 jdk8u changeset: http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/f6f9aec27858 Thanks, Vladimir [1] http://hg.openjdk.java.net/jdk7u/jdk7u-dev/hotspot/rev/33878f8ae419