Name: icC57033 Date: 08/15/97


The section "6.4 The JAVA Virtual machine instruction set" of The Java Virtual Machine
Specification, subsection invokevirtual says:

The item at that index in the constant pool must have the tag CONSTANT_Methodref (4.4.2),
a reference to a class name, a method name, and the method's descriptor (4.3.3).

Meanwhile, following test crashes VM during execution.
This is due to a reference to a interface name, a method name, and the method's descriptor
instead of a reference to a class name, a method name, and the method's descriptor.
Those crashing is reproduceable for release 1.1.1, 1.1.2, 1.1.3, 1.1.4, 1.2
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//File: @(#)invokevirtual00304.jasm 1.1 97/08/14
//Copyright 08/14/97 Sun Microsystems, Inc. All Rights Reserved
package javasoft/sqe/tests/vm/invokevirtual/invokevirtual003/invokevirtual00304;

interface SomeInterface
{
public abstract Method m1:"()I";
public abstract Method m2:"()I";
} // end Class SomeInterface

class SomeClss
        implements SomeInterface
{
public Method m1:"()I"
        stack 1 locals 1
{
                sipush 10;
                ireturn;
}

public Method m2:"()I"
        stack 1 locals 1
{
                sipush 20;
                ireturn;
}

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

} // end Class SomeClss

class invokevirtual00304
{
public static Method run:"([Ljava/lang/String;Ljava/io/PrintStream;)I"
        stack 2 locals 3
{
        new class SomeClss;
        dup;
        invokespecial Method SomeClss.<init>:"()V";
        astore_2;
        try t16;
        aload_2;
// wrong
        invokevirtual Method SomeInterface.m1:"()I";
// end wrong
        pop;
        endtry t16;
        goto L19;
        catch t16 java/lang/Throwable;
        pop;
        iconst_0;
        ireturn;
L19: iconst_2;
        ireturn;
}

public static Method main:"([Ljava/lang/String;)V"
        stack 2 locals 1
{
                aload_0;
                getstatic Field java/lang/System.out:"Ljava/io/PrintStream;";
                invokestatic Method run:"([Ljava/lang/String;Ljava/io/PrintStream;)I";
                bipush 95;
                iadd;
                invokestatic Method java/lang/System.exit:"(I)V";
                return;
}

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

} // end Class invokevirtual00304
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To reproduce bug:

% uname -a
SunOS novo62 5.5.1 Generic_103640-08 sun4u sparc SUNW,Ultra-1
% cd ~/tmp
% ls
invokevirtual00304.jasm
% java -version
java version "1.2_EA2"
% java -fullversion
java full version "JDK1.2H"
% echo $CLASSPATH
.:/export/ld32/sqe/harness_release/classes
% java javasoft.sqe.jasm.Main -strict -d . invokevirtual00304.jasm; echo "status=$status"
status=0
% java -verify javasoft.sqe.tests.vm.invokevirtual.invokevirtual003.invokevirtual00304.invokevirtual00304 ; echo "status=$status"
SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_MAPERR [addr: 0x38]

stackbase=F0000000, stackpointer=EFFFF3F0

Full thread dump:
    "Finalizer" (TID:0xee3004f8, sys_thread_t:0x5d238, state:R) prio=1
    "Ref handler" (TID:0xee3005a8, sys_thread_t:0x5e0b8, state:CW) prio=10
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:315)
at java.lang.Ref$RefHandler.run(Ref.java:129)
    "Async Garbage Collector" (TID:0xee300360, sys_thread_t:0x4a2e8, state:R) prio=1
    "Idle thread" (TID:0xee3003a8, sys_thread_t:0x48d48, state:R) prio=0
    "Clock" (TID:0xee3002a8, sys_thread_t:0xa8b80, state:CW) prio=12
    "main" (TID:0xee3002d8, sys_thread_t:0x209f8, state:R) prio=5 *current thread*
at javasoft.sqe.tests.vm.invokevirtual.invokevirtual003.invokevirtual00304.invokevirtual00304.run(invokevirtual00304.jasm)
at javasoft.sqe.tests.vm.invokevirtual.invokevirtual003.invokevirtual00304.invokevirtual00304.main(invokevirtual00304.jasm)
Monitor Cache Dump:
Registered Monitor Dump:
    utf8 hash table: <unowned>
    JNI pinning lock: <unowned>
    JNI global reference lock: <unowned>
    BinClass lock: <unowned>
    Class linking lock: <unowned>
    Code rewrite lock: <unowned>
    Heap lock: <unowned>
    Monitor IO lock: <unowned>
    Child death monitor: <unowned>
    Event monitor: <unowned>
    I/O monitor: <unowned>
    Alarm monitor: <unowned>
Waiting to be notified:
"Clock"
    Sbrk lock: <unowned>
    Monitor cache expansion lock: <unowned>
    Thread queue lock: <unowned>
    Monitor registry: owner "main" (0x209f8, 1 entry)
Thread Alarm Q:
Abort
status=-2147483642
%
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