--- old/src/share/vm/classfile/sharedPathsMiscInfo.cpp	2016-09-15 09:43:57.245801401 -0700
+++ new/src/share/vm/classfile/sharedPathsMiscInfo.cpp	2016-09-15 09:43:57.125792963 -0700
@@ -86,6 +86,9 @@
   case REQUIRED:
     out->print("Expecting that file %s must exist and is not altered", path);
     break;
+  case PATCH_MOD:
+    out->print("Expecting --patch-module=%s", path);
+    break;
   default:
     ShouldNotReachHere();
   }
@@ -146,6 +149,9 @@
           // But we want it to not exist -> fail
           return fail("File must not exist");
         }
+        if ((st.st_mode & S_IFMT) != S_IFREG) {
+          return fail("Did not get a regular file as expected.");
+        }
         time_t    timestamp;
         long      filesize;
 
@@ -161,7 +167,26 @@
       }
     }
     break;
-
+  case PATCH_MOD:
+    {
+      GrowableArray<ModulePatchPath*>* patch_mod_args = Arguments::get_patch_mod_prefix();
+      if (patch_mod_args != NULL) {
+        int num_of_entries = patch_mod_args->length();
+        for (int i = 0; i < num_of_entries; i++) {
+          const char* module_name = (patch_mod_args->at(i))->module_name();
+          const char* path_string = (patch_mod_args->at(i))->path_string();
+          size_t n = strlen(module_name);
+          // path contains the module name, followed by '=', and one or more entries.
+          // E.g.: "java.base=foo" or "java.naming=dir1:dir2:dir3"
+          if ((strncmp(module_name, path, n) != 0) ||
+              (path[n] != '=') ||
+              (strcmp(path + n + 1, path_string) != 0)) {
+            return fail("--patch-module mismatch, path not found in run time: ", path);
+          }
+        }
+      }
+    }
+    break;
   default:
     return fail("Corrupted archive file header");
   }