• Version of JMockit that was used:
  JMockit1.37

• Description of the problem:
  A test class below throws ArrayIndexOutOfBoundsException with no StackTrace.

import org.junit.Test;

public class TestClass {
    @Test
    public void test() {
        int i = 0;
        i += 1000; // compiled to opcode iinc_w
    }
}

I traced and found that the exception was thrown at mockit.external.asm.MethodReader.readAllLabelsInCodeBlock(MethodReader.java:339)
and it was caused by comparison of opcode IINC at MethodReader.java:354.

Opcodes.IINC should be used, not InstructionType.IINC.

Same pattern found in MethodReader.readWideInstruction.