Hey Clint,
This looks like a bug on our end. Would you mind filing an issue for us in
our tracker? Meanwhile, you can work around this by patching
DynamicClassLoader.java to not use sun.misc.Unsafe.
Change:
public Class defineClassX(String className, byte[] b, int start, int
> end) {
> totalClasses++;
> if (sunJVM) {
> return ((Unsafe) sunUnsafe).defineClass(className, b, start,
> end);
> }
> else {
> return super.defineClass(className, b, start, end);
> }
> }
>
To:
public Class defineClassX(String className, byte[] b, int start, int
> end) {
> totalClasses++;
> return super.defineClass(className, b, start, end);
> }
>
App Engine doesn't allow access to sun.misc.Unsafe, so even after this
verifier error is fixed, the code path is identical.
On Sat, Sep 12, 2009 at 4:58 PM, Clint <[email protected]> wrote:
>
> I'm getting an exception using the MVEL2 library, but only in
> production... any ideas how to resolve this? I'd love to set --
> noverify, but that's not really an option, right?
>
> Nested in javax.servlet.ServletException: init:
> java.lang.VerifyError: (class: org/mvel2/optimizers/dynamic/
> DynamicClassLoader, method: defineClassX signature: (Ljava/lang/String;
> [BII)Ljava/lang/Class;) Incompatible object argument for function call
> at org.mvel2.optimizers.dynamic.DynamicOptimizer._init
> (DynamicOptimizer.java:46)
> at org.mvel2.optimizers.dynamic.DynamicOptimizer.init
> (DynamicOptimizer.java:42)
> at org.mvel2.optimizers.OptimizerFactory.setDefaultOptimizer
> (OptimizerFactory.java:106)
> at org.mvel2.optimizers.OptimizerFactory.<clinit>
> (OptimizerFactory.java:64)
>
> >
>
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