--- old/src/hotspot/share/classfile/moduleEntry.hpp	2020-06-23 12:35:21.655230276 -0700
+++ new/src/hotspot/share/classfile/moduleEntry.hpp	2020-06-23 12:35:21.411221091 -0700
@@ -69,7 +69,7 @@
   GrowableArray<ModuleEntry*>* _reads; // list of modules that are readable by this module
   Symbol* _version;                    // module version number
   Symbol* _location;                   // module location
-  CDS_ONLY(int _shared_path_index;)    // >0 if this classes in this module are in CDS archive
+  CDS_ONLY(int _shared_path_index;)    // >=0 if classes in this module are in CDS archive
   bool _can_read_all_unnamed;
   bool _has_default_read_edges;        // JVMTI redefine/retransform support
   bool _must_walk_reads;               // walk module's reads list at GC safepoints to purge out dead modules
@@ -156,6 +156,7 @@
 
   void set_is_patched() {
       _is_patched = true;
+      CDS_ONLY(_shared_path_index = -1); // Mark all shared classes in this module invisible.
   }
   bool is_patched() {
       return _is_patched;