John, Christian,
I was updating the multi-dispatch sample from the cookbook
when the NoClassDefFoundError bug re-appear.
[forax@localhost multi-dispatch]$ java -ea -cp classes:. Main2
skip java.lang.String.contentEquals/2
skip java.lang.String.replace/3
Exception in thread "main" java.lang.NoClassDefFoundError: Main2
at java.lang.invoke.MethodHandle.invokeExact(MethodHandle.java)
at java.lang.invoke.MethodHandle.invokeExact(MethodHandle.java)
at Main2.test2(Main2.java:27)
at Main2.main(Main2.java:42)
[forax@localhost src]$ java -version
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b07)
Java HotSpot(TM) 64-Bit Server VM (build 22.0-b03, mixed mode)
The sample is here:
http://code.google.com/p/jsr292-cookbook/source/browse/trunk/multi-dispatch/src/jsr292/cookbook/mdispatch/
You can compile it from src,
javac -d ../classes jsr292/cookbook/mdispatch/*.java
The example that doesn't work is Main2, which is created by compiling
Main2.java
and then by rewriting all invokevirtual/invokestatic to invokedynamic
using this line
java -cp classes:../lib/asm-debug-all-4.0_RC1.jar
jsr292.cookbook.mdispatch.Rewriter Main2.class
Note that Main2.class is already rewritten so you don't have to do it
if you just want to reproduce the bug without modifying Main2.java
I think the error is thrown when calling a method handle created by this
line
https://code.google.com/p/jsr292-cookbook/source/browse/trunk/multi-dispatch/src/jsr292/cookbook/mdispatch/SmallSelectorMetadata.java?spec=svn13&r=13#121
at this callsite
http://code.google.com/p/jsr292-cookbook/source/browse/trunk/multi-dispatch/Main2.java#27
How the code works: it installs a bimorphic cache on the receiver
and an inlining cache on the parameters. After 3 cache misses, the
implementation
switch to use a table based resolution that lookup for most specific
method handle and
use an exactInvoker to call it. The bug appear when the exactInvoker is
called.
regards,
Rémi
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