NPE in NativeImageGenerator if something goes wrong too early

[dmlloyd]

fatal error: java.lang.NullPointerException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:598)
	at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1005)
	at com.oracle.svm.hosted.NativeImageGenerator.run(NativeImageGenerator.java:418)
	at com.oracle.svm.hosted.NativeImageGeneratorRunner.buildImage(NativeImageGeneratorRunner.java:278)
	at com.oracle.svm.hosted.NativeImageGeneratorRunner.build(NativeImageGeneratorRunner.java:375)
	at com.oracle.svm.hosted.NativeImageGeneratorRunner.main(NativeImageGeneratorRunner.java:104)
Caused by: java.lang.NullPointerException
	at com.oracle.graal.pointsto.reports.CallTreePrinter.buildCallTree(CallTreePrinter.java:155)
	at com.oracle.graal.pointsto.reports.CallTreePrinter.print(CallTreePrinter.java:61)
	at com.oracle.svm.hosted.NativeImageGenerator.doRun(NativeImageGenerator.java:764)
	at com.oracle.svm.hosted.NativeImageGenerator.lambda$run$0(NativeImageGenerator.java:401)
	at java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1386)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Error: Image building with exit status 1

Really this comes from a bad, bad try/finally block in NativeImageGenerator. It does all kinds of things with the "bigbang" field, which is not initialized until partway through the try block, so if anything fails before that point, it blows up in the finally block leaving no hint as to what happened.

[cstancu]

This was fixed as part of 74675c5.