test/java/lang/invoke/LFCaching/TestMethods.java

*** 362,371 ****
--- 362,372 ----
      INVOKER("invoker") {
                  @Override
                  public Map<String, Object> getTestCaseData() {
                      Map<String, Object> data = new HashMap<>();
                      int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
+                     desiredArity = desiredArity <= 252 ? desiredArity : 252;
                      MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
                      data.put("mtTarget", mtTarget);
                      return data;
                  }
  
*** 378,387 ****
--- 379,389 ----
      EXACT_INVOKER("exactInvoker") {
                  @Override
                  public Map<String, Object> getTestCaseData() {
                      Map<String, Object> data = new HashMap<>();
                      int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
+                     desiredArity = desiredArity <= 252 ? desiredArity : 252;
                      MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
                      data.put("mtTarget", mtTarget);
                      return data;
                  }
  
*** 394,403 ****
--- 396,406 ----
      SPREAD_INVOKER("spreadInvoker") {
                  @Override
                  public Map<String, Object> getTestCaseData() {
                      Map<String, Object> data = new HashMap<>();
                      int desiredArity = Helper.RNG.nextInt(Helper.MAX_ARITY);
+                     desiredArity = desiredArity <= 252 ? desiredArity : 252;
                      MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
                      data.put("mtTarget", mtTarget);
                      // Arity after reducing because of long and double take 2 slots.
                      int realArity = mtTarget.parameterCount();
                      int modifierMHArgNum = Helper.RNG.nextInt(realArity + 1);