NoSuchElementException @LambdaReifier.java:47

[ddsimoes]

I tried to run the tool on a test project (single file) and got the following error:

Error! Failed to transform some classes
java.lang.RuntimeException: java.util.NoSuchElementException
    at net.orfjackal.retrolambda.LambdaReifier.reifyLambdaClass(LambdaReifier.java:32)
    at net.orfjackal.retrolambda.LambdaUsageBackporter$InvokeDynamicInsnConvertingMethodVisitor.backportLambda(LambdaUsageBackporter.java:107)
    at net.orfjackal.retrolambda.LambdaUsageBackporter$InvokeDynamicInsnConvertingMethodVisitor.visitInvokeDynamicInsn(LambdaUsageBackporter.java:99)
    at org.objectweb.asm.ClassReader.readCode(ClassReader.java:1343)
    at org.objectweb.asm.ClassReader.readMethod(ClassReader.java:938)
    at org.objectweb.asm.ClassReader.accept(ClassReader.java:669)
    at org.objectweb.asm.ClassReader.accept(ClassReader.java:506)
    at net.orfjackal.retrolambda.LambdaUsageBackporter.transform(LambdaUsageBackporter.java:28)
    at net.orfjackal.retrolambda.Main$1.transform(Main.java:40)
    at net.orfjackal.retrolambda.BytecodeTransformingFileVisitor.visitFile(BytecodeTransformingFileVisitor.java:25)
    at net.orfjackal.retrolambda.BytecodeTransformingFileVisitor.visitFile(BytecodeTransformingFileVisitor.java:11)
    at java.nio.file.Files.walkFileTree(Files.java:2667)
    at java.nio.file.Files.walkFileTree(Files.java:2739)
    at net.orfjackal.retrolambda.Main.main(Main.java:38)
Caused by: java.util.NoSuchElementException
    at java.util.concurrent.LinkedBlockingDeque.getFirst(LinkedBlockingDeque.java:553)
    at net.orfjackal.retrolambda.LambdaReifier.getLambdaFactoryMethod(LambdaReifier.java:47)
    at net.orfjackal.retrolambda.LambdaReifier.reifyLambdaClass(LambdaReifier.java:29)
    ... 13 more

Thank's

[luontola]

What is the command that you used for running Retrolambda? I'm guessing this to be a case of the Java agent not running (i.e. no -javaagent:retrolambda.jar JVM option). If that's so, then the error message needs to be improved to be more user friendly.

[ddsimoes]

Sorry for the late reply. Yes, I forgot the -javaagent option. Sorry. It's working now. Thank you.

[luontola]

Let's keep this open. I want it to produce a better error message.

[ddsimoes]

Great, it would be better. And I think it's nice to show the full instructions in the README.md too.
Thanks.