With minimal VM, where JVMTI is not enabled, the following line causes ShouldNotReachHere:

https://bugs.openjdk.java.net/browse/JDK-8159666
http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/fb3602f3d00b

--- a/src/share/vm/oops/instanceKlass.cpp Mon Jun 20 17:38:14 2016 +0000
+++ b/src/share/vm/oops/instanceKlass.cpp Mon Jun 20 22:02:20 2016 -0700
@@ -1961,6 +1961,11 @@
     m->remove_unshareable_info();
   }
 
+ // cached_class_file might be pointing to a malloc'ed buffer allocated by
+ // event-based tracing code at CDS dump time. It's not usable at runtime
+ // so let's clear it.
+ set_cached_class_file(NULL);
+
   // do array classes also.
   array_klasses_do(remove_unshareable_in_class);
 }

src/share/vm/oops/instanceKlass.hpp:
...
  void set_cached_class_file(JvmtiCachedClassFileData *data) { ShouldNotReachHere(); }