[ASF BZ 60683] Tomcat throws NPE after startup with sec. manager on IBM JDK17

1. Start Tomcat on IBM JDK17 JAVA_HOME=... /ibm-java-70 ./catalina.sh start -security 2. visit homepage curl -I http: //BIND_ADDRESS:8080/ 3. HTTP status code is 500 and log catalina out contains NPE: java.lang.NullPointerException at org.apache.catalina.connector.OutputBuffer.realWriteChars(OutputBuffer.java:464) at org.apache.tomcat.util.buf.CharChunk.flushBuffer(CharChunk.java:393) at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:279) at org.apache.catalina.connector.Response.finishResponse(Response.java:439) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:573) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1100) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:687) at org.apache.tomcat.util.net.AprEndpoint$SocketWithOptionsProcessor.run(AprEndpoint.java:2445) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1157) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:627) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang. Thread .run( Thread .java:798)