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jasmin/jasmin-2.4/examples/VerifyTest.j

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+; --- Copyright Jonathan Meyer 1996. All rights reserved. -----------------
+; File:      jasmin/examples/VerifyTest.j
+; Author:    Jonathan Meyer, 10 July 1996
+; Purpose:   Treats an int as an object - should alert the Verifier
+; -------------------------------------------------------------------------
+
+;
+; This code demonstrates the verifier at work. See also VerifyTest1.j.
+;
+; The main() method below tries to clone the integer 100 - this
+; is clearly an error since clone() expects an Object, not an integer.
+;
+; If you run this with no verification on, it is likely to crash the
+; interpreter. Running this with the -verify option produces a
+; Verifier error.
+;
+
+; This is similar to the Java code:
+;
+;    class VerifyTest {
+;        public static void main(String args[]) {
+;            int x = 100;
+;            x.clone();
+;        }
+;     }
+
+
+.class public examples/VerifyTest
+.super java/lang/Object
+
+.method public <init>()V
+   aload_0
+   invokenonvirtual java/lang/Object/<init>()V
+   return
+.end method
+
+.method public static main([Ljava/lang/String;)V
+    bipush 100
+    invokevirtual java/lang/Object/clone()Ljava/lang/Object;
+    return
+.end method