test java/util/NavigableMap/LockStep crash on solaris-amd64
vopts: -d64 -server -Xcomp -XX:TraceRedefineClasses=8192

## nof_mallocs = 211491, nof_frees = 67880
## memory stomp: byte at 0x00000000016b1670 in front of object 0x00000000016b1688
### previous object (not sure if correct): 0x00000000016b0c26 (1559269212160 bytes)
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0xffff80ffb9e78cb1, pid=12473, tid=10
#
# JRE version: Java(TM) SE Runtime Environment (8.0-b80) (build 1.8.0-ea-fastdebug-b80)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b21-fastdebug compiled mode solaris-amd64 compressed oops)
# Problematic frame:
# V [libjvm.so+0x1fd8cb1] void os::free(void*,unsigned short)+0x269
#
# Core dump written. Default location: /var/tmp/iignatye/core or core.12473
#
# An error report file with more information is saved as:
# /var/tmp/iignatye/hs_err_pid12473.log
 Locks owned:
Mutex: [0x426ef8/0xf9ae01] CodeCache_lock - owner: 0xf9d000

Stack: [0xffff80ffbd2ff000,0xffff80ffbd3ff000], sp=0xffff80ffbd3fe100, free space=1020k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x1fd8cb1] void os::free(void*,unsigned short)+0x269
V [libjvm.so+0xd2c098] void CodeBlob::flush()+0x34
V [libjvm.so+0x1edd378] void nmethod::flush()+0x1f0
V [libjvm.so+0x23aa2c6] void NMethodSweeper::release_nmethod(nmethod*)+0x616
V [libjvm.so+0x23aab4d] void NMethodSweeper::process_nmethod(nmethod*)+0x3c1
V [libjvm.so+0x23a996b] void NMethodSweeper::sweep_code_cache()+0x61b
V [libjvm.so+0x23a92c8] void NMethodSweeper::possibly_sweep()+0x1b4
V [libjvm.so+0xdb6add] CompileTask*CompileQueue::get()+0x19
V [libjvm.so+0xdb9680] void CompileBroker::compiler_thread_loop()+0x1fc
V [libjvm.so+0x2454c77] void JavaThread::thread_main_inner()+0x507
V [libjvm.so+0x24543ec] void JavaThread::run()+0x810
V [libjvm.so+0x1fe3726] java_start+0x1ce
C [libc.so.1+0x121545] _thrp_setup+0xa5
C [libc.so.1+0x1217f0] _lwp_start+0x0