src/java.base/share/classes/java/lang/module/Resolver.java

*** 520,530 ****
                      findFail("Unable to compute the hash of module %s", dn);
                  }
  
                  // skip checking the hash if the module has been patched
                  ModuleReferenceImpl other = (ModuleReferenceImpl)mref2;
!                 if (other != null && !other.isPatched()) {
                      byte[] recordedHash = hashes.hashFor(dn);
                      byte[] actualHash = other.computeHash(algorithm);
                      if (actualHash == null)
                          findFail("Unable to compute the hash of module %s", dn);
                      if (!Arrays.equals(recordedHash, actualHash)) {
--- 520,530 ----
                      findFail("Unable to compute the hash of module %s", dn);
                  }
  
                  // skip checking the hash if the module has been patched
                  ModuleReferenceImpl other = (ModuleReferenceImpl)mref2;
!                 if (other != null) {
                      byte[] recordedHash = hashes.hashFor(dn);
                      byte[] actualHash = other.computeHash(algorithm);
                      if (actualHash == null)
                          findFail("Unable to compute the hash of module %s", dn);
                      if (!Arrays.equals(recordedHash, actualHash)) {