6904403: assert(f == k->has_finalizer(),"inconsistent has_finalizer") with debug VM
Summary: Don't assert if one of classes in hierarhy was redefined
Reviewed-by: coleenp, sspitsyn
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* version 2 for more details (a copy is included in the LICENSE file that
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import java.lang.instrument.Instrumentation;
import java.lang.instrument.ClassDefinition;
import jdk.internal.org.objectweb.asm.ClassWriter;
import jdk.internal.org.objectweb.asm.Label;
import jdk.internal.org.objectweb.asm.MethodVisitor;
import jdk.internal.org.objectweb.asm.Opcodes;
public class Agent implements Opcodes {
private static byte[] makeNewMartyr() {
ClassWriter cw = new ClassWriter(0);
MethodVisitor mv;
cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, "Martyr", null, "java/lang/Object", null);
cw.visitSource(null, null);
{
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
mv.visitCode();
Label lab0 = new Label();
mv.visitLabel(lab0);
mv.visitLineNumber(1, lab0);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
mv = cw.visitMethod(ACC_PUBLIC, "getName", "()Ljava/lang/String;", null, null);
mv.visitCode();
Label lab0 = new Label();
mv.visitLabel(lab0);
mv.visitLineNumber(6, lab0);
mv.visitLdcInsn("Redefinition done");
mv.visitInsn(ARETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
mv = cw.visitMethod(ACC_PROTECTED, "finalize", "()V", null, null);
mv.visitCode();
Label lab0 = new Label();
mv.visitLabel(lab0);
mv.visitLineNumber(8, lab0);
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
mv.visitLdcInsn("Finalizer called");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V");
mv.visitInsn(RETURN);
mv.visitMaxs(2, 1);
mv.visitEnd();
}
cw.visitEnd();
return cw.toByteArray();
}
public static void premain(String args, Instrumentation inst) throws Exception {
agentmain(args, inst);
}
public static void agentmain(String args, Instrumentation inst) throws Exception {
ClassDefinition martyrDef =
new ClassDefinition(Class.forName("Martyr"), makeNewMartyr());
inst.redefineClasses(martyrDef);
}
}