hg: jdk10/hs/hotspot: 8185103: TestThreadDumpMonitorContention.java crashed due to SIGSEGV in G1SATBCardTableModRefBS::write_ref_field_pre_work

[harold.seigel at oracle.com]

Changeset: c3efaa3728f7
Author:    hseigel
Date:      2017-08-08 08:41 -0400
URL:       http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/c3efaa3728f7

8185103: TestThreadDumpMonitorContention.java crashed due to SIGSEGV in G1SATBCardTableModRefBS::write_ref_field_pre_work
Summary: Ensure that a Klass's mirror is set before putting the Klass on the fixup_module_field_list
Reviewed-by: coleenp, dholmes, gtriantafill

! src/share/vm/classfile/javaClasses.cpp
! src/share/vm/classfile/javaClasses.hpp
! src/share/vm/memory/universe.cpp