AnalyzerException with ASM 3.3

Hi ASM community, I'm using

Analyzer a = new Analyzer(new SimpleVerifier(.....));
a..analyze(....);

in the 3.3 release of ASM to verify the correctness of bytecode which I
have *not* modified. On running the above code on Java2D - the Java
2D demo which comes with the Sun/Oracle JDK - I get the following
error, when validating the following method:

class:
java2d.demos.Arcs_Curves.Curves.class

method:
render (IILjava/awt/Graphics2D;)V

Error:
org.objectweb.asm.tree.analysis.AnalyzerException: Error in render at
instruction 326: Method owner: expected Ljava/awt/Shape;, but found
Ljava/lang/Object;
	at org.objectweb.asm.tree.analysis.Analyzer.analyze(Analyzer.java:291)

From the bytecode I can see why the error occurs and ASM resolves the
value for the stack frame at 327 by grabbing the return value from the
invokeinterface opcode.

323   --     LINENUMBER 120 L43
324   --     ALOAD 11
325  Ljava/lang/Object; --     ACONST_NULL
326  Ljava/lang/Object;Lnull; --     INVOKEINTERFACE
java/awt/Shape.getPathIterator
(Ljava/awt/geom/AffineTransform;)Ljava/awt/geom/PathIterator;
327  Ljava/awt/geom/PathIterator; --     ASTORE 12

However, this isn't the problem I ran into, but thought I'd mention this in
case it impacts on the error which occurs in the same method but a few
opcodes further down. The problem is: ASM stops computing stack frames
between 398 and 404 and I was wondering why? (Obviously I get a
null pointer exception when I try to query the stack frame at 404).

391   --    L16
392   --    FRAME FULL [java2d/demos/Arcs_Curves/Curves I I
java/awt/Graphics2D I java/awt/font/FontRenderContext
java/awt/font/TextLayout F F I I] []
393   --     ILOAD 10
394  I --     ICONST_3
395  II --     IF_ICMPLT L17
396   --    L52
397 --     LINENUMBER 134 L52
398 --     ILOAD 2
399 --     ICONST_2
400 --     IDIV
401 --     BIPUSH 15
402 --     IADD
403 --     I2F
404 --     FSTORE 8
405 --    L53
406 --     LINENUMBER 83 L53
407 --     IINC 9 1
408   --    L13
409   --    FRAME FULL [java2d/demos/Arcs_Curves/Curves I I
java/awt/Graphics2D I java/awt/font/FontRenderContext
java/awt/font/TextLayout F F I] []
410   --     ILOAD 9
411  I --     ICONST_2
412  II --     IF_ICMPLT L14
413   --    L54
414 --     LINENUMBER 136 L54
415 --     RETURN

I've attached the class file which causes the issue. And if you run

java -cp asm-3.3.jar org.objectweb.asm.util.CheckClassAdapter Curves.class

you can see where the stack frames are no longer computed:

00312 Curves I I Graphics2D I FontRenderContext TextLayout F F I I . .
. .  : I  :     ICONST_3
00313 Curves I I Graphics2D I FontRenderContext TextLayout F F I I . .
. .  : I I  :     IF_ICMPLT L3
00314 Curves I I Graphics2D I FontRenderContext TextLayout F F I I . .
. .  :  :     ILOAD 2
00315 ?                          :     ICONST_2
00316 ?                          :     IDIV
00317 ?                          :     BIPUSH 15
00318 ?                          :     IADD
00319 ?                          :     I2F
00320 ?                          :     FSTORE 8
00321 ?                          :     IINC 9 1
00322 Curves I I Graphics2D I FontRenderContext TextLayout F F I . . .
. .  :  :    L0
00323 Curves I I Graphics2D I FontRenderContext TextLayout F F I . . .
. .  :  :    FRAME CHOP 1
00324 Curves I I Graphics2D I FontRenderContext TextLayout F F I . . .
. .  :  :     ILOAD 9
00325 Curves I I Graphics2D I FontRenderContext TextLayout F F I . . .
. .  : I  :     ICONST_2
00326 Curves I I Graphics2D I FontRenderContext TextLayout F F I . . .
. .  : I I  :     IF_ICMPLT L1
00327 Curves I I Graphics2D I FontRenderContext TextLayout F F I . . .
. .  :  :     RETURN

BTW, I haven't checked to see if this error occurs in other releases of ASM.

Any help would be greatly appreciated !

Regards for now...

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