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/*
* @test /nodynamiccopyright/
* @bug 8202056
* @compile/ref=ImproperSerialPF.out -XDrawDiagnostics -Xlint:serial ImproperSerialPF.java
*/
import java.io.*;
class ImproperSerialPF implements Serializable {
// Proper declaration of serialPersistentFields is:
// private static final ObjectStreamField[] serialPersistentFields = ...
public /*instance*/ Object serialPersistentFields = Boolean.TRUE;
private static final long serialVersionUID = 42;
static class LiteralNullSPF implements Serializable {
private static final ObjectStreamField[] serialPersistentFields = null;
private static final long serialVersionUID = 42;
}
// Casting obscures the simple syntactic null-check
static class CastedNullSPF implements Serializable {
private static final ObjectStreamField[] serialPersistentFields =
(ObjectStreamField[])null;
private static final long serialVersionUID = 42;
}
// Conditional obscures the simple syntactic null-check too
static class ConditionalNullSPF implements Serializable {
private static final ObjectStreamField[] serialPersistentFields =
(true ? null : null);
private static final long serialVersionUID = 42;
}
}
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