Re: JNIEnv->FindClass(JNIEnv *env, const char *name), initialize class?

[Marco Trudel <mtrudel at gmx dot ch>]

Tom Tromey wrote:
> > > > > > "David" == David Daney <ddaney@avtrex.com> writes:
>
> > > static { } blocks won't be called when a class is loaded in a JNI
> > > function via JNIEnv->FindClass(...). But they will be executed on a
> > > Sun JVM.
> > > Is an example needed? Is this a GCJ issue? Ideas?
>
> David> A small test case would be useful.
>
> Yeah, please write it in a form where we can drop it into the
> libjava.jni test suite.

Here you go. Main.java calls searchClass.cpp which runs 
FindClass("ClassToFind").
The output with a Sun JVM is:
> Hello...
> "Hello..." should have been printed.
From a GCJ compiled application:
> "Hello..." should have been printed.

Sorry, I'm not (yet) familiar with Mauve and work currently on Windows. 
I hope this will do it anyway...


> If this is a bug it looks like the fix will be a one line change in
> jni.cc:_Jv_JNI_FindClass.

Yes, I thought so :-)


thanks
Marco

#include <jni.h>

#ifndef _Included_Main
#define _Included_Main
#ifdef __cplusplus
extern "C" {
#endif

JNIEXPORT void JNICALL Java_Main_searchClass(JNIEnv *env, jclass c)
{
	env->FindClass("ClassToFind");
}

#ifdef __cplusplus
}
#endif
#endif

public class Main
{
	public static void main(String[] args)
	{
		System.loadLibrary("searchClass");
		searchClass();
		System.out.println("\"Hello...\" should have been printed.");
	}

	private static native void searchClass();
}

public class ClassToFind
{
	static
	{
		System.out.println("Hello...");
	}
}