On Dec 14, 2010, at 6:02 PM, Rémi Forax wrote: > With the jdk7b121, sometimes when I call a MH created with guardWith, it > get a NPE because the target is NULL :( > > groovy examples/mixin.groovy > > java.lang.NullPointerException > at > sun.dyn.MethodHandleImpl$GuardWithTest.invoke_L1(MethodHandleImpl.java:963) > at java.dyn.MethodHandle.invokeVarargs(MethodHandle.java:336) > at org.codehaus.groovy2.lang.MOPLinker.fallback(MOPLinker.java:145) > at sun.dyn.FilterGeneric$F1.invoke_C0(FilterGeneric.java:516) > at mixin.run(Unknown Source) > at > groovy.lang.GroovyShell.runScriptOrMainOrTestOrRunnable(GroovyShell.java:264) > at groovy.lang.GroovyShell.run(GroovyShell.java:227) > at groovy.lang.GroovyShell.run(GroovyShell.java:157) > at groovy.ui.GroovyMain.processOnce(GroovyMain.java:496) > at groovy.ui.GroovyMain.run(GroovyMain.java:311) > at groovy.ui.GroovyMain.process(GroovyMain.java:297) > at groovy.ui.GroovyMain.processArgs(GroovyMain.java:112) > at groovy.ui.GroovyMain.main(GroovyMain.java:93) > Caught: java.lang.NullPointerException > > Because MHs.guardWithTest() explicitly test that the target is not null, > I think there is a bug somewhere in the VM.
Does it also happen with -Xint? Or C1? I guess you're using C2. > > Step to reproduce: > download Gru: http://www-igm.univ-mlv.fr/~forax/tmp/Gru.tgz > > run: groovy examples/mixin.groovy > > It should print some bytecodes and "groovy yai" ... > if there is no NPE. I will have a look. > > Rémi > PS: yes, Gru a prototype of groovy on top of JSR292 :) Nice! -- Christian _______________________________________________ mlvm-dev mailing list [email protected] http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
