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8210252: com/sun/jdi/DebuggerThreadTest.java fails with NPE

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Reviewed-by: cjplummer, sspitsyn
This commit is contained in:
Gary Adams 2018-09-13 07:54:38 -04:00
parent 7f806d6abd
commit f2b9a3e5b9
1 changed files with 14 additions and 3 deletions
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17
test/jdk/com/sun/jdi/DebuggerThreadTest.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -66,6 +66,7 @@ public class DebuggerThreadTest extends TestScaffold {
* Move to top ThreadGroup and dump all threads.
*/
public void dumpThreads() {
int finishedThreads = 0;
ThreadGroup tg = Thread.currentThread().getThreadGroup();
ThreadGroup parent = tg.getParent();
while (parent != null) {
@ -77,7 +78,14 @@ public class DebuggerThreadTest extends TestScaffold {
int gotThreads = tg.enumerate(list, true);
for (int i = 0; i < Math.min(gotThreads, list.length); i++){
Thread t = list[i];
String groupName = t.getThreadGroup().getName();
ThreadGroup tga = t.getThreadGroup();
String groupName;
if (tga == null) {
groupName = "<completed>";
finishedThreads++ ;
} else {
groupName = tga.getName();
}
System.out.println("Thread [" + i + "] group = '" +
groupName +
@ -89,7 +97,10 @@ public class DebuggerThreadTest extends TestScaffold {
failure("FAIL: non-daemon thread '" + t.getName() +
"' found in ThreadGroup '" + groupName + "'");
}
}
if (finishedThreads > 0 ) {
failure("FAIL: " + finishedThreads +
" threads completed while VM suspended.");
}
}