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Assertion failure compiling macros with Scala 2.12 #29

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Facsimiler opened this issue Jan 2, 2017 · 3 comments
Open

Assertion failure compiling macros with Scala 2.12 #29

Facsimiler opened this issue Jan 2, 2017 · 3 comments

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@Facsimiler
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Facsimiler commented Jan 2, 2017 •
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Hi!

I recently switched to using Scala 2.12, and have since found that Unidoc fails when processing sources containing macro definitions. Specifically, an assertion error results.

The Ymacro-no-expand option has been deprecated in favor of Ymacro-expand:none as of Scala 2.12, so I'm using that, but otherwise, there aren't too many changes I can recall from the sources I used with Scala 2.11.

Unidoc worked fine with the same code under Scala 2.12. Am I missing something?

Here's what I'm seeing:

java.lang.AssertionError: assertion failed:

     while compiling: /home/some-user/src/some-project/some-module/macro/src/main/scala/some-url/util/package.scala
        during phase: globalPhase=terminal, enteringPhase=typer
     library version: version 2.12.1
    compiler version: version 2.12.1
  reconstructed args: -Ymacro-expand:none -diagrams -doc-footer Copyright © Some copyright message. -deprecation -groups -doc-title Some API Documentation -Xfatal-warnings -doc-version 0.0.4-SNAPSHOT -no-prefixes -classpath /some/path/macro/target/scala-2.12/classes:/home/some-user/.ivy2/cache/org.scoverage/scalac-scoverage-runtime_2.12/jars/scalac-scoverage-runtime_2.12-1.3.0.jar:/home/some-user/.ivy2/cache/org.scala-lang/scala-reflect/jars/scala-reflect-2.12.1.jar -bootclasspath /usr/lib/jvm/java-8-oracle/jre/lib/resources.jar:/usr/lib/jvm/java-8-oracle/jre/lib/rt.jar:/usr/lib/jvm/java-8-oracle/jre/lib/sunrsasign.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jsse.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jce.jar:/usr/lib/jvm/java-8-oracle/jre/lib/charsets.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jfr.jar:/usr/lib/jvm/java-8-oracle/jre/classes:/home/some-user/.ivy2/cache/org.scala-lang/scala-library/jars/scala-library-2.12.1.jar -d /home/some-user/src/some-project/target/scala-2.12/api -implicits

  last tree to typer: Ident(<argument>)
       tree position: <unknown>
            tree tpe: some-url.util.Resource
              symbol: <none>
   symbol definition: <none> (a NoSymbol)
      symbol package: <none>
       symbol owners: 
           call site: package <root> in <none>

<Cannot read source file>
    at scala.tools.nsc.doc.model.ModelFactory.findTemplateMaybe(ModelFactory.scala:811)
    at scala.tools.nsc.doc.model.MemberLookup.internalLink(MemberLookup.scala:15)
    at scala.tools.nsc.doc.model.MemberLookup.internalLink$(MemberLookup.scala:14)
    at scala.tools.nsc.doc.DocFactory$$anon$1.internalLink(DocFactory.scala:68)
    at scala.tools.nsc.doc.base.MemberLookupBase.$anonfun$memberLookup$6(MemberLookupBase.scala:59)
    at scala.tools.nsc.doc.base.MemberLookupBase.memberLookup(MemberLookupBase.scala:59)
    at scala.tools.nsc.doc.base.MemberLookupBase.memberLookup$(MemberLookupBase.scala:48)
    at scala.tools.nsc.doc.DocFactory$$anon$1.memberLookup(DocFactory.scala:68)
    at scala.tools.nsc.doc.base.CommentFactoryBase.$anonfun$parseAtSymbol$16(CommentFactoryBase.scala:371)
    at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:234)
    at scala.collection.immutable.Map$Map2.foreach(Map.scala:146)
    at scala.collection.TraversableLike.map(TraversableLike.scala:234)
    at scala.collection.TraversableLike.map$(TraversableLike.scala:227)
    at scala.collection.AbstractTraversable.map(Traversable.scala:104)
    at scala.tools.nsc.doc.base.CommentFactoryBase.linkedExceptions$1(CommentFactoryBase.scala:370)
    at scala.tools.nsc.doc.base.CommentFactoryBase.parse0$1(CommentFactoryBase.scala:388)
    at scala.tools.nsc.doc.base.CommentFactoryBase.parseAtSymbol(CommentFactoryBase.scala:416)
    at scala.tools.nsc.doc.base.CommentFactoryBase.parseAtSymbol$(CommentFactoryBase.scala:200)
    at scala.tools.nsc.doc.DocFactory$$anon$1.parseAtSymbol(DocFactory.scala:68)
    at scala.tools.nsc.doc.model.CommentFactory.parse(CommentFactory.scala:85)
    at scala.tools.nsc.doc.model.CommentFactory.parse$(CommentFactory.scala:83)
    at scala.tools.nsc.doc.DocFactory$$anon$1.parse(DocFactory.scala:68)
    at scala.tools.nsc.doc.model.CommentFactory.defineComment(CommentFactory.scala:75)
    at scala.tools.nsc.doc.model.CommentFactory.defineComment$(CommentFactory.scala:38)
    at scala.tools.nsc.doc.DocFactory$$anon$1.defineComment(DocFactory.scala:68)
    at scala.tools.nsc.doc.model.CommentFactory.$anonfun$comment$1(CommentFactory.scala:31)
    at scala.collection.mutable.HashMap.getOrElseUpdate(HashMap.scala:79)
    at scala.tools.nsc.doc.model.CommentFactory.comment(CommentFactory.scala:31)
    at scala.tools.nsc.doc.model.CommentFactory.comment$(CommentFactory.scala:29)
    at scala.tools.nsc.doc.DocFactory$$anon$1.comment(DocFactory.scala:68)
    at scala.tools.nsc.doc.model.ModelFactoryImplicitSupport.makeImplicitConversions(ModelFactoryImplicitSupport.scala:102)
    at scala.tools.nsc.doc.model.ModelFactoryImplicitSupport.makeImplicitConversions$(ModelFactoryImplicitSupport.scala:85)
    at scala.tools.nsc.doc.DocFactory$$anon$1.makeImplicitConversions(DocFactory.scala:68)
    at scala.tools.nsc.doc.model.ModelFactory$DocTemplateImpl.<init>(ModelFactory.scala:346)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$$anon$7.<init>(ModelFactory.scala:642)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$.createDocTemplate$1(ModelFactory.scala:642)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$.createTemplate(ModelFactory.scala:689)
    at scala.tools.nsc.doc.model.ModelFactory.makeMember0$1(ModelFactory.scala:783)
    at scala.tools.nsc.doc.model.ModelFactory.makeMember(ModelFactory.scala:796)
    at scala.tools.nsc.doc.model.ModelFactory$DocTemplateImpl.$anonfun$ownMembers$1(ModelFactory.scala:356)
    at scala.tools.nsc.doc.model.ModelFactory$DocTemplateImpl.<init>(ModelFactory.scala:356)
    at scala.tools.nsc.doc.model.ModelFactory$PackageImpl.<init>(ModelFactory.scala:465)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$$anon$4.<init>(ModelFactory.scala:675)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$.createTemplate(ModelFactory.scala:675)
    at scala.tools.nsc.doc.model.ModelFactory.makeMember0$1(ModelFactory.scala:783)
    at scala.tools.nsc.doc.model.ModelFactory.makeMember(ModelFactory.scala:796)
    at scala.tools.nsc.doc.model.ModelFactory$DocTemplateImpl.$anonfun$ownMembers$1(ModelFactory.scala:356)
    at scala.tools.nsc.doc.model.ModelFactory$DocTemplateImpl.<init>(ModelFactory.scala:356)
    at scala.tools.nsc.doc.model.ModelFactory$PackageImpl.<init>(ModelFactory.scala:465)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$$anon$4.<init>(ModelFactory.scala:675)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$.createTemplate(ModelFactory.scala:675)
    at scala.tools.nsc.doc.model.ModelFactory.makeMember0$1(ModelFactory.scala:783)
    at scala.tools.nsc.doc.model.ModelFactory.makeMember(ModelFactory.scala:796)
    at scala.tools.nsc.doc.model.ModelFactory$DocTemplateImpl.$anonfun$ownMembers$1(ModelFactory.scala:356)
    at scala.tools.nsc.doc.model.ModelFactory$DocTemplateImpl.<init>(ModelFactory.scala:356)
    at scala.tools.nsc.doc.model.ModelFactory$PackageImpl.<init>(ModelFactory.scala:465)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$$anon$4.<init>(ModelFactory.scala:675)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$.createTemplate(ModelFactory.scala:675)
    at scala.tools.nsc.doc.model.ModelFactory.makeMember0$1(ModelFactory.scala:783)
    at scala.tools.nsc.doc.model.ModelFactory.makeMember(ModelFactory.scala:796)
    at scala.tools.nsc.doc.model.ModelFactory$DocTemplateImpl.$anonfun$ownMembers$1(ModelFactory.scala:356)
    at scala.tools.nsc.doc.model.ModelFactory$DocTemplateImpl.<init>(ModelFactory.scala:356)
    at scala.tools.nsc.doc.model.ModelFactory$PackageImpl.<init>(ModelFactory.scala:465)
    at scala.tools.nsc.doc.model.ModelFactory$RootPackageImpl.<init>(ModelFactory.scala:473)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$$anon$1.<init>(ModelFactory.scala:657)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$.createTemplate(ModelFactory.scala:657)
    at scala.tools.nsc.doc.model.ModelFactory$modelCreation$.createRootPackage(ModelFactory.scala:605)
    at scala.tools.nsc.doc.model.ModelFactory$$anon$21.<init>(ModelFactory.scala:50)
    at scala.tools.nsc.doc.model.ModelFactory.makeModel(ModelFactory.scala:47)
    at scala.tools.nsc.doc.DocFactory.makeUniverse(DocFactory.scala:81)
    at scala.tools.nsc.doc.DocFactory.generate$1(DocFactory.scala:124)
    at scala.tools.nsc.doc.DocFactory.document(DocFactory.scala:131)
    at xsbt.Runner.run(ScaladocInterface.scala:26)
    at xsbt.ScaladocInterface.run(ScaladocInterface.scala:10)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:107)
    at sbt.compiler.AnalyzingCompiler.doc(AnalyzingCompiler.scala:73)
    at sbt.compiler.AnalyzingCompiler.doc(AnalyzingCompiler.scala:68)
    at sbt.Doc$$anonfun$scaladoc$1.apply(Doc.scala:23)
    at sbt.Doc$$anonfun$scaladoc$1.apply(Doc.scala:23)
    at sbt.RawCompileLike$$anonfun$prepare$1.apply(RawCompileLike.scala:64)
    at sbt.RawCompileLike$$anonfun$prepare$1.apply(RawCompileLike.scala:56)
    at sbt.RawCompileLike$$anonfun$cached$1$$anonfun$2$$anonfun$apply$1.apply(RawCompileLike.scala:49)
    at sbt.RawCompileLike$$anonfun$cached$1$$anonfun$2$$anonfun$apply$1.apply(RawCompileLike.scala:47)
    at sbt.Tracked$$anonfun$outputChanged$1.apply(Tracked.scala:84)
    at sbt.Tracked$$anonfun$outputChanged$1.apply(Tracked.scala:79)
    at sbt.RawCompileLike$$anonfun$cached$1.apply(RawCompileLike.scala:54)
    at sbt.RawCompileLike$$anonfun$cached$1.apply(RawCompileLike.scala:39)
    at sbtunidoc.Plugin$Unidoc$.apply(Plugin.scala:134)
    at sbtunidoc.Plugin$$anonfun$baseCommonUnidocTasks$2.apply(Plugin.scala:27)
    at sbtunidoc.Plugin$$anonfun$baseCommonUnidocTasks$2.apply(Plugin.scala:27)
    at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
    at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:40)
    at sbt.std.Transform$$anon$4.work(System.scala:63)
    at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:228)
    at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:228)
    at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
    at sbt.Execute.work(Execute.scala:237)
    at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)
    at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)
    at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:159)
    at sbt.CompletionService$$anon$2.call(CompletionService.scala:28)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.Executors$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)

This is then followed by a repeat of the original error message heading, without the stack trace. I'm not sure what line of the file is causing the failure.

Any ideas?

UPDATE: Incidentally, if I generate documentation using "doc" instead, I don't get any errors.
@Sciss
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Sciss commented Mar 14, 2017

I'm having the same problem, both in Scala 2.11.8 and 2.12.1. My error looks slightly different:

[info] Main Scala API documentation to /home/hhrutz/Documents/devel/Mellite/site/target/scala-2.12/unidoc...
[error] /home/hhrutz/.sbt/0.13/staging/826f0b08a174143cc2c0/mellite/src/main/scala-2.12/de/sciss/mellite/gui/impl/FScapeOutputsViewImpl.scala:106: can't expand macros compiled by previous versions of Scala
[error]         if (res === OptionPane.Result.Ok) {
[error]                                       ^
[error] /home/hhrutz/.sbt/0.13/staging/826f0b08a174143cc2c0/mellite/src/main/scala/de/sciss/mellite/ProcActions.scala:133: can't expand macros compiled by previous versions of Scala
[error]       if (key !== Proc.mainIn) {
[error]                        ^
[error] /home/hhrutz/.sbt/0.13/staging/826f0b08a174143cc2c0/mellite/src/main/scala/de/sciss/mellite/gui/ActionArtifactLocation.scala:86: can't expand macros compiled by previous versions of Scala
[error]         if (optRes === 0) {
[error]                        ^

@Sciss
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Sciss commented Mar 14, 2017

In my case, adding scala-reflect to the unidoc project solved the issue for me:

+    libraryDependencies ++= Seq(
+      "org.scala-lang" %  "scala-reflect" % scalaVersion.value % "provided"
+    ),

@Facsimiler
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Author

I just revisited this issue, which is still present in Scala 2.12.8, and found that if I remove the -implicits flag, the assertion error no longer occurs.

@Sciss It appears that our issues are different. I tried adding the scala-reflect dependency, and it made no difference.

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@Sciss @Facsimiler