Generating shared archive with coops enabled causes crash:
$ ./bin/java -d64 -XX:+UseCompressedOops -Xshare:dump
Loading classes to share ... done. 
Rewriting and unlinking classes ... done. 
Calculating hash values for String objects .. done. 
Calculating fingerprints ... done. 
Removing unshareable information ... done. 
Moving pre-ordered read-only objects to shared space at 0x00000007fe200000 ... done. 
Moving read-only objects to shared space at 0x00000007fe78edd0 ... #
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error (dump.cpp:140), pid=25710, tid=1105717568
#  Error: ShouldNotReachHere()
#
# JRE version: 7.0
# Java VM: Java HotSpot(TM) 64-Bit Server VM (20.0-b01 interpreted mode linux-amd64 compressed oops)
# An error report file with more information is saved as:
# /export/local/ttt/hs_err_pid25710.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x7c507c];;  VMError::report(outputStream*)+0x114c
V  [libjvm.so+0x7c53e4];;  VMError::report_and_die()+0x2d4
V  [libjvm.so+0x3cd4f6];;  report_vm_error(char const*, int, char const*, char const*)+0x56
V  [libjvm.so+0x414c55];;  MarkObjectsSkippingKlassesOopClosure::do_oop(unsigned int*)+0x15
V  [libjvm.so+0x670893];;  objArrayKlass::oop_oop_iterate_v(oopDesc*, OopClosure*)+0xf3
V  [libjvm.so+0x414938];;  _ZL38mark_object_recursive_skipping_klassesP7oopDesc+0x78
V  [libjvm.so+0x416125];;  MarkCommonReadOnly::do_object(oopDesc*)+0x245
V  [libjvm.so+0x717224];;  ContiguousSpace::object_iterate_from(WaterMark, ObjectClosure*)+0x74
V  [libjvm.so+0x4178d1];;  VM_PopulateDumpSharedSpace::doit()+0x311
V  [libjvm.so+0x7cc74c];;  VM_Operation::evaluate()+0x4c
V  [libjvm.so+0x7cb4f3];;  VMThread::evaluate_operation(VM_Operation*)+0x83
V  [libjvm.so+0x7cbab8];;  VMThread::loop()+0x178
V  [libjvm.so+0x7cbdc0];;  VMThread::run()+0x70
V  [libjvm.so+0x687dc0];;  _ZL10java_startP6Thread+0xf0