/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE191_Integer_Underflow__short_rand_predec_68a.java
Label Definition File: CWE191_Integer_Underflow.label.xml
Template File: sources-sinks-68a.tmpl.java
*/
/*
 * @description
 * CWE: 191 Integer Underflow
 * BadSource: rand Set data to result of rand()
 * GoodSource: A hardcoded non-zero, non-min, non-max, even number
 * Sinks: decrement
 *    GoodSink: Ensure there will not be an underflow before decrementing data
 *    BadSink : Decrement data, which can cause an Underflow
 * Flow Variant: 68 Data flow: data passed as a member variable in the "a" class, which is used by a method in another class in the same package
 *
 * */

package testcases.CWE191_Integer_Underflow.s05;
import testcasesupport.*;

public class CWE191_Integer_Underflow__short_rand_predec_68a extends AbstractTestCase
{
    public static short data;

    public void bad() throws Throwable
    {

        /* POTENTIAL FLAW: Use a random value */
        data = (short)((new java.security.SecureRandom()).nextInt(1+Short.MAX_VALUE-Short.MIN_VALUE)+Short.MIN_VALUE);

        (new CWE191_Integer_Underflow__short_rand_predec_68b()).badSink();
    }

    public void good() throws Throwable
    {
        goodG2B();
        goodB2G();
    }

    /* goodG2B() - use goodsource and badsink */
    private void goodG2B() throws Throwable
    {

        /* FIX: Use a hardcoded number that won't cause underflow, overflow, divide by zero, or loss-of-precision issues */
        data = 2;

        (new CWE191_Integer_Underflow__short_rand_predec_68b()).goodG2BSink();
    }

    /* goodB2G() - use badsource and goodsink */
    private void goodB2G() throws Throwable
    {

        /* POTENTIAL FLAW: Use a random value */
        data = (short)((new java.security.SecureRandom()).nextInt(1+Short.MAX_VALUE-Short.MIN_VALUE)+Short.MIN_VALUE);

        (new CWE191_Integer_Underflow__short_rand_predec_68b()).goodB2GSink();
    }

    /* Below is the main(). It is only used when building this testcase on
     * its own for testing or for building a binary to use in testing binary
     * analysis tools. It is not used when compiling all the testcases as one
     * application, which is how source code analysis tools are tested.
     */
    public static void main(String[] args) throws ClassNotFoundException,
           InstantiationException, IllegalAccessException
    {
        mainFromParent(args);
    }
}