This error occurred when compiling with HotJava with the -O option

ERROR: sun.tools.java.CompilerError: stack depth error 1/0
-- listing --
$217:
484: aload 0
484: getfield sun.hotjava.doc.Document doc
484: astore 3
252: aload 3
230: getfield java.util.Hashtable props
252: ldc "url"
230: invokevirtual java.lang.Object get(java.lang.Object)
252: checkcast class java.net.URL
484: astore 3
486: aload 0
486: getfield sun.hotjava.doc.Document errors
486: ifnonnull $219:
487: try -295321384
488: aload 0
488: new class sun.hotjava.doc.Document
488: dup
488: ldc "HTML Errors"
488: invokenonvirtual sun.hotjava.doc.Document(java.lang.String)
488: putfield sun.hotjava.doc.Document errors
490: iconst_0 0
490: istore 4
491: aload 3
491: ifnull $223:
492: aload 3
492: invokevirtual java.lang.String toExternalForm()
492: astore 5
493: aload 0
493: getfield sun.hotjava.doc.Document errors
493: astore 6
493: aconst_null
493: astore 7
652: aload 6
230: getfield java.util.Hashtable props
245: ldc "dtd"
230: invokevirtual java.lang.Object get(java.lang.Object)
245: checkcast class sun.html.DTD
493: ldc "h1"
652: invokevirtual sun.html.Element getElement(java.lang.String)
652: astore 8
652: aload 6
493: iload 4
652: aload 6
659: aload 8
652: aload 7
659: invokevirtual sun.hotjava.doc.TagItem makeTag(sun.html.Element, sun.html.Attributes)
659: invokevirtual int insertTagPair(int, sun.hotjava.doc.TagItem)
493: istore 4
494: aload 0
494: getfield sun.hotjava.doc.Document errors
494: iload 4
494: new class java.lang.StringBuffer
494: dup
494: invokenonvirtual java.lang.StringBuffer()
494: ldc "HTML Errors: "
494: invokevirtual java.lang.StringBuffer append(java.lang.String)
494: aload 5
494: invokevirtual java.lang.StringBuffer append(java.lang.String)
494: invokevirtual java.lang.String toString()
494: invokevirtual int insert(int, java.lang.String)
95: ldc 65536
494: iadd
494: istore 4
495: aload 0
495: getfield sun.hotjava.doc.Document errors
495: astore 6
495: new class sun.html.Attributes
495: dup
495: ldc "href"
495: new class java.lang.StringBuffer
495: dup
495: invokenonvirtual java.lang.StringBuffer()
495: ldc "verbatim:"
495: invokevirtual java.lang.StringBuffer append(java.lang.String)
495: aload 5
495: invokevirtual java.lang.StringBuffer append(java.lang.String)
495: invokevirtual java.lang.String toString()
495: invokenonvirtual sun.html.Attributes(java.lang.String,java.lang.String)
495: astore 7
652: aload 6
230: getfield java.util.Hashtable props
245: ldc "dtd"
230: invokevirtual java.lang.Object get(java.lang.Object)
245: checkcast class sun.html.DTD
495: ldc "a"
652: invokevirtual sun.html.Element getElement(java.lang.String)
652: astore 8
652: aload 6
495: iload 4
652: aload 6
659: aload 8
652: aload 7
659: invokevirtual sun.hotjava.doc.TagItem makeTag(sun.html.Element, sun.html.Attributes)
659: invokevirtual int insertTagPair(int, sun.hotjava.doc.TagItem)
495: istore 4
496: aload 0
496: getfield sun.hotjava.doc.Document errors
496: iload 4
496: aload 5
496: invokevirtual int insert(int, java.lang.String)
95: ldc 65536
496: iadd
496: istore 4
497: aload 0
497: getfield sun.hotjava.doc.Document errors
497: astore 6
497: aconst_null
497: astore 7
620: aload 6
230: getfield java.util.Hashtable props
245: ldc "dtd"
230: invokevirtual java.lang.Object get(java.lang.Object)
245: checkcast class sun.html.DTD
497: ldc "hr"
620: invokevirtual sun.html.Element getElement(java.lang.String)
620: astore 8
620: aload 6
497: iload 4
620: aload 6
627: aload 8
620: aload 7
627: invokevirtual sun.hotjava.doc.TagItem makeTag(sun.html.Element, sun.html.Attributes)
627: invokevirtual int insertTag(int, sun.hotjava.doc.TagItem)
497: istore 4
$223:
500: aload 0
500: getfield sun.hotjava.doc.Document errors
500: astore 5
500: aconst_null
500: astore 6
652: aload 5
230: getfield java.util.Hashtable props
245: ldc "dtd"
230: invokevirtual java.lang.Object get(java.lang.Object)
245: checkcast class sun.html.DTD
500: ldc "pre"
652: invokevirtual sun.html.Element getElement(java.lang.String)
652: astore 7
652: aload 5
500: iload 4
652: aload 5
659: aload 7
652: aload 6
659: invokevirtual sun.hotjava.doc.TagItem makeTag(sun.html.Element, sun.html.Attributes)
659: invokevirtual int insertTagPair(int, sun.hotjava.doc.TagItem)
501: aload 0
501: getfield sun.hotjava.doc.Document doc
501: ldc "errors"
501: aload 0
501: getfield sun.hotjava.doc.Document errors
501: invokevirtual void setProperty(java.lang.String, java.lang.Object)
$221:
487: goto $219:
$222:
503: pop
$219:
507: try -295317256
508: aload 0
508: getfield sun.hotjava.doc.Document errors
508: astore 4
508: aload 4
508: monitorenter
508: try -295317112
509: aload 0
509: getfield sun.hotjava.doc.Document errors
509: astore 6
320: aload 6
320: getfield int nitems
91: bipush 16
320: ishl
95: ldc 65536
509: isub
509: istore 6
511: aload 3
511: ifnonnull $241:
512: aload 0
512: getfield sun.hotjava.doc.Document errors
512: iload 6
512: new class java.lang.StringBuffer
512: dup
512: invokenonvirtual java.lang.StringBuffer()
512: ldc "line "
512: invokevirtual java.lang.StringBuffer append(java.lang.String)
512: iload 1
512: invokevirtual java.lang.StringBuffer append(int)
512: ldc ": "
512: invokevirtual java.lang.StringBuffer append(java.lang.String)
512: iload 1
512: bipush 10
512: if_icmpge $242:
512: ldc " "
512: goto $243:
$242:
512: iload 1
512: bipush 100
512: if_icmpge $244:
512: ldc " "
512: goto $243:
$244:
512: ldc ""
$243:
512: invokevirtual java.lang.StringBuffer append(java.lang.String)
512: aload 2
512: invokevirtual java.lang.StringBuffer append(java.lang.String)
512: ldc "
"
512: invokevirtual java.lang.StringBuffer append(java.lang.String)
512: invokevirtual java.lang.String toString()
512: invokevirtual int insert(int, java.lang.String)
512: istore 6
511: goto $236:
$241:
514: aload 0
514: getfield sun.hotjava.doc.Document errors
514: astore 7
514: new class sun.html.Attributes
514: dup
514: ldc "href"
514: new class java.lang.StringBuffer
514: dup
514: invokenonvirtual java.lang.StringBuffer()
514: ldc "verbatim:"
514: invokevirtual java.lang.StringBuffer append(java.lang.String)
514: aload 3
514: invokevirtual java.lang.String toExternalForm()
514: invokevirtual java.lang.StringBuffer append(java.lang.String)
514: ldc "#@"
514: invokevirtual java.lang.StringBuffer append(java.lang.String)
514: iload 1
514: invokevirtual java.lang.StringBuffer append(int)
514: invokevirtual java.lang.String toString()
514: invokenonvirtual sun.html.Attributes(java.lang.String,java.lang.String)
514: astore 8
652: aload 7
230: getfield java.util.Hashtable props
245: ldc "dtd"
230: invokevirtual java.lang.Object get(java.lang.Object)
245: checkcast class sun.html.DTD
514: ldc "a"
652: invokevirtual sun.html.Element getElement(java.lang.String)
652: astore 9
652: aload 7
514: iload 6
652: aload 7
659: aload 9
652: aload 8
659: invokevirtual sun.hotjava.doc.TagItem makeTag(sun.html.Element, sun.html.Attributes)
659: invokevirtual int insertTagPair(int, sun.hotjava.doc.TagItem)
514: istore 6
515: aload 0
515: getfield sun.hotjava.doc.Document errors
515: iload 6
515: new class java.lang.StringBuffer
515: dup
515: invokenonvirtual java.lang.StringBuffer()
515: ldc "line "
515: invokevirtual java.lang.StringBuffer append(java.lang.String)
515: iload 1
515: invokevirtual java.lang.StringBuffer append(int)
515: ldc ":"
515: invokevirtual java.lang.StringBuffer append(java.lang.String)
515: invokevirtual java.lang.String toString()
515: invokevirtual int insert(int, java.lang.String)
95: ldc 65536
515: iadd
515: istore 6
516: aload 0
516: getfield sun.hotjava.doc.Document errors
516: iload 6
516: new class java.lang.StringBuffer
516: dup
516: invokenonvirtual java.lang.StringBuffer()
516: iload 1
516: bipush 10
516: if_icmpge $249:
516: ldc " "
516: goto $250:
$249:
516: iload 1
516: bipush 100
516: if_icmpge $251:
516: ldc " "
516: goto $250:
$251:
516: ldc " "
$250:
516: invokevirtual java.lang.StringBuffer append(java.lang.String)
516: aload 2
516: invokevirtual java.lang.StringBuffer append(java.lang.String)
516: ldc "
"
516: invokevirtual java.lang.StringBuffer append(java.lang.String)
516: invokevirtual java.lang.String toString()
516: invokevirtual int insert(int, java.lang.String)
516: istore 6
$236:
508: aload 4
508: monitorexit
508: return
$237:
508: aload 4
508: monitorexit
508: athrow
$233:
$234:
519: pop
483: return
sun.tools.java.CompilerError: stack depth error 1/0
        at sun.tools.asm.Assembler.balance(Assembler.java:223)
        at sun.tools.asm.Assembler.balance(Assembler.java:252)
        at sun.tools.asm.Assembler.balance(Assembler.java:248)
        at sun.tools.asm.Assembler.write(Assembler.java:344)
        at sun.tools.javac.SourceClass.compileClass(SourceClass.java:695)
        at sun.tools.javac.SourceClass.compile(SourceClass.java:527)
        at sun.tools.javac.Main.compile(Main.java:193)
        at sun.tools.javac.Main.main(Main.java:289)
error: An error has occurred in the compiler; please file a bug report (###@###.###).
1 error
gnumake: *** [.compile.classlist] Error 1
31.62u 7.73s 0:49.98 78.7%
Exit 2


[hinkmond 11/5/96]

I've added an attachment from GraphOn which is a testcase for this bug. To reproduce the problem just do a optimized compiliation:

javac -O testcase.java