[LANG-1310] MethodUtils.invokeMethod throws ArrayStoreException if using varargs arguments and smaller types than the method defines

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.5
• Fix Version/s: 3.6
• Component/s: lang.reflect.*
• Assignee: Pascal Schumacher
• Reporter: Eickvonder
• Created: 01/Feb/17 13:36
• Updated: 12/Jun/17 12:04
• Resolved: 19/Mar/17 16:17

Description

Since release 3.5 and due to the changes of LANG-1115 an ArrayStoreException occurs on MethodUtils.invokeMethod if using varargs arguments and smaller types than the method defines (e.g. int vs long).

  @Test
  public void testMethodUtilsInvokeMethodVarArgs () throws Exception {
    MyObject object = new MyObject ();
    MethodUtils.invokeMethod (object, "doSomething", 1);
  }

  public static class MyObject {
    public void doSomething (long... args) {
      System.out.println ("doSomething");
    }
  }

throws

java.lang.ArrayStoreException
	at java.lang.System.arraycopy(Native Method)
	at org.apache.commons.lang3.reflect.MethodUtils.getVarArgs(MethodUtils.java:497)
	at org.apache.commons.lang3.reflect.MethodUtils.toVarArgs(MethodUtils.java:463)
	at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:234)
	at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:270)
	at org.apache.commons.lang3.reflect.MethodUtils.invokeMethod(MethodUtils.java:147)

In 3.4. a NoSuchMethodException had been thrown, but in 3.5 the code now finds the matching method but fails then with above exception.

Issue Links

• links to: GitHub Pull Request #256