jjs> function f() { void null + 0; } f()
Exception in thread "main" java.lang.AssertionError: object<type=Undefined>
at jdk.nashorn.internal.codegen.CodeGenerator$TypeBounds.<init>(CodeGenerator.java:627)
at jdk.nashorn.internal.codegen.CodeGenerator$TypeBounds.maybeNew(CodeGenerator.java:650)
at jdk.nashorn.internal.codegen.CodeGenerator$TypeBounds.notNarrowerThan(CodeGenerator.java:635)
at jdk.nashorn.internal.codegen.CodeGenerator.loadBinaryOperands(CodeGenerator.java:575)
at jdk.nashorn.internal.codegen.CodeGenerator.access$6800(CodeGenerator.java:183)
at jdk.nashorn.internal.codegen.CodeGenerator$14.loadStack(CodeGenerator.java:3575)
at jdk.nashorn.internal.codegen.CodeGenerator$OptimisticOperation.emit(CodeGenerator.java:4407)
at jdk.nashorn.internal.codegen.CodeGenerator$OptimisticOperation.emit(CodeGenerator.java:4392)
at jdk.nashorn.internal.codegen.CodeGenerator.loadADD(CodeGenerator.java:3582)
at jdk.nashorn.internal.codegen.CodeGenerator$1.enterADD(CodeGenerator.java:872)
...