Javac error on static methods in interfaces

[Stephen Colebourne]

I'm getting a javac error on a static method in an interface:

@FunctionalInterface
public interface TemporalAdjuster {
    Temporal adjustInto(Temporal temporal);

    public static TemporalAdjuster firstDayOfMonth() {
        return (temporal) -> temporal;
    }
}


Information:java: An exception has occurred in the compiler
(1.8.0-internal). Please file a bug at the Java Developer Connection
(http://java.sun.com/webapps/bugreport)  after checking the Bug Parade
for duplicates. Include your program and the following diagnostic in
your report.  Thank you.
Information:java: java.lang.NullPointerException
Information:java: 	at com.sun.tools.javac.jvm.Code.emitop0(Code.java:538)
Information:java: 	at
com.sun.tools.javac.jvm.Items$SelfItem.load(Items.java:367)
Information:java: 	at com.sun.tools.javac.jvm.Gen.genArgs(Gen.java:913)
Information:java: 	at com.sun.tools.javac.jvm.Gen.visitApply(Gen.java:1751)
Information:java: 	at
com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1440)
Information:java: 	at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:894)
Information:java: 	at com.sun.tools.javac.jvm.Gen.visitReturn(Gen.java:1719)
Information:java: 	at
com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1359)
Information:java: 	at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:684)
Information:java: 	at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:719)
Information:java: 	at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:705)
Information:java: 	at com.sun.tools.javac.jvm.Gen.genStats(Gen.java:756)
Information:java: 	at com.sun.tools.javac.jvm.Gen.visitBlock(Gen.java:1094)
Information:java: 	at
com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:884)
Information:java: 	at com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:969)
Information:java: 	at com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:942)
Information:java: 	at
com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:771)
Information:java: 	at com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2356)
Information:java: 	at
com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:753)
Information:java: 	at
com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1547)
Information:java: 	at
com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1511)
Information:java: 	at
com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:909)
Information:java: 	at
com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:868)
Information:java: 	at com.sun.tools.javac.main.Main.compile(Main.java:517)
Information:java: 	at
com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
Information:java: 	at
com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
Information:java: 	at
org.jetbrains.jps.javac.JavacMain.compile(JavacMain.java:144)
Information:java: 	at
org.jetbrains.jps.incremental.java.JavaBuilder.compileJava(JavaBuilder.java:319)
Information:java: 	at
org.jetbrains.jps.incremental.java.JavaBuilder.compile(JavaBuilder.java:231)
Information:java: 	at
org.jetbrains.jps.incremental.java.JavaBuilder.build(JavaBuilder.java:145)
Information:java: 	at
org.jetbrains.jps.incremental.IncProjectBuilder.runModuleLevelBuilders(IncProjectBuilder.java:963)
Information:java: 	at
org.jetbrains.jps.incremental.IncProjectBuilder.runBuildersForChunk(IncProjectBuilder.java:710)
Information:java: 	at
org.jetbrains.jps.incremental.IncProjectBuilder.buildTargetsChunk(IncProjectBuilder.java:740)
Information:java: 	at
org.jetbrains.jps.incremental.IncProjectBuilder.buildChunkIfAffected(IncProjectBuilder.java:673)
Information:java: 	at
org.jetbrains.jps.incremental.IncProjectBuilder.buildChunks(IncProjectBuilder.java:494)
Information:java: 	at
org.jetbrains.jps.incremental.IncProjectBuilder.runBuild(IncProjectBuilder.java:274)
Information:java: 	at
org.jetbrains.jps.incremental.IncProjectBuilder.build(IncProjectBuilder.java:164)
Information:java: 	at
org.jetbrains.jps.cmdline.BuildRunner.runBuild(BuildRunner.java:114)
Information:java: 	at
org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:205)
Information:java: 	at
org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:102)
Information:java: 	at
org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler$1.run(BuildMain.java:107)
Information:java: 	at
org.jetbrains.jps.service.impl.SharedThreadPoolImpl$1.run(SharedThreadPoolImpl.java:26)
Information:java: 	at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
Information:java: 	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
Information:java: 	at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
Information:java: 	at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
Information:java: 	at java.lang.Thread.run(Thread.java:722)
Information:java: Errors occurred while compiling module 'jdk8_310'
Information:Compilation completed with 1 error and 0 warnings in 3 sec
Information:1 error
Information:0 warnings
Error:java: Compilation failed: internal java compiler error

This is the version of code in
http://hg.openjdk.java.net/threeten/threeten and sub-repos. (called
from Intellij, but I doubt that is the issue)

thanks
Stephen