NPE with -Dgraal.Dump flag

[Cristian Esquivias]

Thanks, Tom. I feel like the output to IGV changed at the same time I
started seeing the stacktraces, but that could've been my imagination. I'll
circle back once I rebuild and verify a change.

- Cristian

On Thu, Aug 4, 2016 at 4:48 PM, Tom Rodriguez <tom.rodriguez at oracle.com>
wrote:

> Sorry, that’s my fault.  I added a try/finally there but bound the wrong
> part.  I’ll push a fix for it.  The exception only happens in cases where
> CFGPrinterObserver wasn’t going to do anything so it’s relatively benign.
>
> tom
>
> > On Aug 4, 2016, at 4:03 PM, Cristian Esquivias <
> cristian.esquivias at gmail.com> wrote:
> >
> > Hi all,
> >
> > I'm getting stacktraces when I run my language with -Dgraal.Dump and the
> > relevant graphs don't seem to be showing up in IGV. I got everything set
> up
> > via the README on github.com/graalvm/graal-core and used `mx vm` and `mx
> > igv` to run the program and to see the AST, respectively.
> >
> > Is there a bug in the dump or do I need to tweak language? I had a
> working
> > version last week but I had to switch computers and got the errors after
> I
> > rebuilt the stack. I haven't changed my language, but maybe there's some
> > extra information that's now needed?
> >
> > I'm running on Ubuntu 16.04 on VirtualBox.
> >
> > Thanks,
> > Cristian
> >
> > Sample stacktrace:
> > CFGPrinter: Exception during output of PhaseSuite:
> > java.lang.NullPointerException
> > java.lang.NullPointerException
> > at
> > com.oracle.graal.printer.CFGPrinterObserver.dumpSandboxed(
> CFGPrinterObserver.java:229)
> > at
> > com.oracle.graal.printer.CFGPrinterObserver.dump(
> CFGPrinterObserver.java:83)
> > at com.oracle.graal.debug.internal.DebugScope.dump(DebugScope.java:303)
> > at com.oracle.graal.debug.Debug.dump(Debug.java:669)
> > at com.oracle.graal.phases.BasePhase.apply(BasePhase.java:180)
> > at com.oracle.graal.phases.BasePhase.apply(BasePhase.java:154)
> > at
> > com.oracle.graal.compiler.GraalCompiler.emitFrontEnd(
> GraalCompiler.java:210)
> > at com.oracle.graal.compiler.GraalCompiler.compile(
> GraalCompiler.java:175)
> > at
> > com.oracle.graal.compiler.GraalCompiler.compileGraph(
> GraalCompiler.java:162)
> > at
> > com.oracle.graal.truffle.hotspot.HotSpotTruffleRuntime.compileMethod(
> HotSpotTruffleRuntime.java:233)
> > at
> > com.oracle.graal.truffle.hotspot.HotSpotTruffleRuntime.
> installOptimizedCallTargetCallMethod(HotSpotTruffleRuntime.java:191)
> > at
> > com.oracle.graal.truffle.hotspot.HotSpotTruffleRuntime.reinstallStubs(
> HotSpotTruffleRuntime.java:292)
> > at com.oracle.graal.truffle.TruffleCompiler.<init>(
> TruffleCompiler.java:112)
> > at
> > com.oracle.graal.truffle.DefaultTruffleCompiler.<init>(
> DefaultTruffleCompiler.java:48)
> > at
> > com.oracle.graal.truffle.DefaultTruffleCompiler.create(
> DefaultTruffleCompiler.java:44)
> > at
> > com.oracle.graal.truffle.hotspot.HotSpotTruffleRuntime.
> initializeTruffleCompiler(HotSpotTruffleRuntime.java:158)
> > at
> > com.oracle.graal.truffle.hotspot.HotSpotTruffleRuntime.
> getTruffleCompiler(HotSpotTruffleRuntime.java:149)
> > at
> > com.oracle.graal.truffle.GraalTruffleRuntime.doCompile0(
> GraalTruffleRuntime.java:465)
> > at
> > com.oracle.graal.truffle.GraalTruffleRuntime.doCompile(
> GraalTruffleRuntime.java:451)
> > at
> > com.oracle.graal.truffle.GraalTruffleRuntime$1.run(
> GraalTruffleRuntime.java:483)
> > at java.util.concurrent.Executors$RunnableAdapter.
> call(Executors.java:511)
> > at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> > at
> > java.util.concurrent.ThreadPoolExecutor.runWorker(
> ThreadPoolExecutor.java:1142)
> > at
> > java.util.concurrent.ThreadPoolExecutor$Worker.run(
> ThreadPoolExecutor.java:617)
> > at java.lang.Thread.run(Thread.java:745)
> > at com.oracle.graal.compiler.CompilerThread.run(CompilerThread.java:51)
>
>