8168934: [TESTBUG] gc/g1/logging/TestG1LoggingFailure.java failedReviewed-by: tschatzl, dfazunen
8146009: "pure virtual method called" with using new GC logging mechanismReviewed-by: dsamersoff, dholmes, mchernovContributed-by: marcus.larsson@oracle.com, michail.chernov@oracle.com