Name: ipC94532 Date: 01/21/2000



The test below shows that throws wrong exception NoSuchMethodError instead of
AbstractMethodError according to the following assertion of the JVMS 2nd edition
CHAPTER 6 "The Java Virtual Machine Instruction Set", invokevirtual instruction):

"Runtime Exceptions
    ...
    Otherwise, if no method matching the resolved name and descriptor is selected,
    invokevirtual throws an AbstractMethodError. "


Similar result for invokespecial instruction was described in bug report #4156956.
This bug is reproduced on different version of JDK (1.2, 1.2.2, 1.3.0A-S)
on classic machine and HotSpot VM.
---------------------------------------------------------------
Logs:

> jasm invokevirtual02401m1v.jasm
> jasm invokevirtual02401m1vf.jasm
## good superclass invokevirtual02401m10n_dad is changed by corrupted one (without method mtd)

> javac invokevirtual02401m1.java
>
>java -version
java version "1.3.0rc1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc1-S)
Java HotSpot(TM) Client VM (build 1.3.0rc1-S, interpreted mode)

>java -Xfuture invokevirtual02401m1/invokevirtual02401m1
Failed with unexpected runtime exception: java.lang.NoSuchMethodError

>java -classic -version
java version "1.3.0rc1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc1-S)
Classic VM (build 1.3.0rc1-S, green threads, nojit)

>java -classic -Xfuture invokevirtual02401m1/invokevirtual02401m1
Failed with unexpected runtime exception: java.lang.NoSuchMethodError:
invokevirtual02401m1.invokevirtual02401m10n: method mtd()I not found

---------------------------------------------------------------
Sources:

---- invokevirtual02401m1v.jasm

package invokevirtual02401m1;

public class invokevirtual02401m10n_dad {

public Method <init>:"()V"
stack 1 locals 1
{
aload_0;
invokespecial Method java/lang/Object.<init>:"()V";
return;
}

public Method mtd:"()I"
stack 1 locals 2
{
iconst_0;
ireturn;
}


} // end Class invokevirtual02401m10n_dad


public class invokevirtual02401m10n extends invokevirtual02401m10n_dad {

public Method <init>:"()V"
stack 1 locals 2
{
aload_0;
invokespecial Method invokevirtual02401m10n_dad.<init>:"()V";
aload_0;
invokevirtual Method invokevirtual02401m10n.mtd:"()I";
return;
}

} // end Class invokevirtual02401m10n


----- invokevirtual02401m1vf.jasm with corrupt superclass invokevirtual02401m10n_dad

package invokevirtual02401m1;

public class invokevirtual02401m10n_dad {

public Method <init>:"()V"
stack 1 locals 1
{
aload_0;
invokespecial Method java/lang/Object.<init>:"()V";
return;
}

} // end Class invokevirtual02401m10n_dad

---- invokevirtual02401m1.java - wrapper
package invokevirtual02401m1;

import java.io.PrintStream;

public class invokevirtual02401m1 {


    public static void main(String args[]) {
System.exit(run(args, System.out) + 95/*STATUS_TEMP*/);
    }


    public static int run(String argv[], PrintStream out) {
    
Class badClass = null;

try {
badClass = Class.forName("invokevirtual02401m1.invokevirtual02401m10n");
try {
Object obj=badClass.newInstance();
} catch (AbstractMethodError e) {
out.println("Passed with runtime exception: " + e);
return 0/*STATUS_PASSED*/;
}
} catch (Throwable e) {
out.println("Failed with unexpected loading exception: " + e);
return 2/*STATUS_FAILED*/;
}
out.println("Failed to reject invalid class ");
return 2/*STATUS_FAILED*/;
    }

}

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