Open Koshak118 opened 5 years ago
@Koshak118 I think this exception generally means that the target class failed to initialize properly-- ie its static initializer(s) threw an exception. But I would have expected to see more information in the stack trace, or a separate exception trace detailing why LibGmp failed to load.
Hi @dragonsinth
Thanks for the fast answer. The following is the more comprehensive stack trace with my own code wiped out (I am working under NDA and cannot disclose the exact functionality which uses your library). Generally the logic is trying to make a "multiply" operation in homomorphic encryption algorithm which includes "mod" operation as well
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class com.squareup.jnagmp.LibGmp
at com.squareup.jnagmp.Gmp.<init>(Gmp.java:175)
at com.squareup.jnagmp.Gmp.<init>(Gmp.java:33)
at com.squareup.jnagmp.Gmp$1.initialValue(Gmp.java:133)
at com.squareup.jnagmp.Gmp$1.initialValue(Gmp.java:131)
at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:180)
at java.lang.ThreadLocal.get(ThreadLocal.java:170)
at com.squareup.jnagmp.Gmp.modPowInsecure(Gmp.java:95)
at ********************************************************************
at ********************************************************************
at ********************************************************************
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:545)
at java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:438)
at *******************************************************************************
@Koshak118 are you on the latest version? Those line numbers make no sense based on the current source code I'm looking at.
Hi @dragonsinth
Sorry for the delayed answer, was with a limited access to the internet for a couple of days
Upgrading the code to the latest version didn't fix a crash; what did fix it is trying to run the code on Mac rather than on Windows, so it looks like it was an environment setup issue
As far as I am concerned you can close the issue
Thanks for the assistance
Ah, yes. We don't provide a pre-built binary libgmp for Windows. You'd need to build libgmp yourself.
Hi
Thanks for this great wrapper, first of all
The issue I've been messing around in a last couple of days is the exception mentioned in the subject, which is thrown in runtime. The trivial things like playing dependencies definitions and their scopes in pom.xml did not help, the local maven repositories and paths seem to be OK. The stack is as the following:
The relevant pom.xml section:
Any ideas?
Thanks