[BCEL-68] Unable to generate method that returns an array of integers

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.1
• Fix Version/s: 5.2
• Component/s: Main
• External issue URL: https://issues.apache.org/bugzilla/show_bug.cgi?id=35991
• External issue ID: 35991
• Assignee: Apache Commons Developers
• Reporter: cavengene
• Created: 03/Aug/05 09:08
• Updated: 24/Apr/14 09:22
• Resolved: 03/Aug/05 21:57

Description

I'm trying to generate the following code use BCEL:

package bci;

public class Test {

public int[] getArray()

{ return new int[1]; }

public static void main(String[] args) {
}
}

I use BCELIfier to generate the code that creates Test. The snippet that creates getArray is

private void createMethod_2() {
InstructionList il = new InstructionList();
MethodGen method = new MethodGen(ACC_PUBLIC, new ArrayType(T_INT, 1), Type.NO_ARGS, new
String[] { }, "getArray", "bci.Test", il, _cp);

InstructionHandle ih_0 = il.append(new PUSH(_cp, 1));
il.append(_factory.createNewArray(new ArrayType(T_INT, 1), (short) 1));
InstructionHandle ih_3 = il.append(_factory.createReturn(Type.OBJECT));
method.setMaxStack();
method.setMaxLocals();
_cg.addMethod(method.getMethod());
il.dispose();
}

I run TestCreator (generated by BCELIfier) and execute Test, which triggers the following error:

Exception in thread "main" java.lang.VerifyError: (class: bci/Test, method: getArray signature: ()[I)
Wrong return type in function

If I return null rather than the array, everything is perfectly allright.