re PR libgcj/15001 ([3.4 only] Using JNI with interpreter and interface methods yields SIGSEGV)

	PR java/15001
	* testsuite/libjava.jni/iface.c: New file.
	* testsuite/libjava.jni/iface.out: New file.
	* testsuite/libjava.jni/iface.java: New file.

From-SVN: r92445

libjava/ChangeLog

+2004-12-20  Tom Tromey  <tromey@redhat.com>
+
+	PR java/15001
+	* testsuite/libjava.jni/iface.c: New file.
+	* testsuite/libjava.jni/iface.out: New file.
+	* testsuite/libjava.jni/iface.java: New file.
+
 2004-12-19  Kelley Cook  <kcook@gcc.gnu.org>
 
 	* include/config.h.in: Regenerate.

libjava/testsuite/libjava.jni/iface.c

+#include <stdlib.h>
+#include <stdio.h>
+#include <iface.h>
+
+void check (JNIEnv *);
+
+void check(JNIEnv *env)
+{
+  if ((*env)->ExceptionCheck(env) != JNI_FALSE)
+    {
+      fprintf(stderr, "UNEXPECTED EXCEPTION\n");
+      exit(-1);
+    }
+}
+
+void
+Java_iface_doCalls (JNIEnv *env, jobject self, jobject other)
+{
+  jclass iface_class, comparable_class;
+  jmethodID iface_meth, comparable_meth;
+  jvalue args[1];
+
+  iface_class = (*env)->FindClass(env, "iface");
+  check (env);
+  comparable_class = (*env)->FindClass (env, "mycomp");
+  check (env);
+
+  iface_meth = (*env)->GetMethodID (env, iface_class, "compareTo",
+				    "(Ljava/lang/Object;)I");
+  check (env);
+  comparable_meth = (*env)->GetMethodID (env, comparable_class, "compareTo",
+					 "(Ljava/lang/Object;)I");
+  check (env);
+
+  args[0].l = other;
+  (*env)->CallObjectMethodA (env, self, iface_meth, args);
+  check (env);
+  (*env)->CallObjectMethodA (env, self, comparable_meth, args);
+  check (env);
+}

libjava/testsuite/libjava.jni/iface.java

+// JNI calls via an interface method were broken in a couple releases.
+
+interface mycomp
+{
+  int compareTo(Object x);
+}
+
+public class iface implements mycomp
+{
+  static
+  {
+    System.loadLibrary("iface");
+  }
+
+  public int compareTo (Object x)
+  {
+    System.out.println ("hi maude");
+    return 3;
+  }
+
+  public native void doCalls(Object x);
+
+  public static void main (String[] args)
+  {
+    new iface().doCalls(args);
+  }
+}

libjava/testsuite/libjava.jni/iface.out

+hi maude
+hi maude