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Cannot extract annotation parameter from annotated type in a macro #22774

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Cannot extract annotation parameter from annotated type in a macro#22774
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hamzaremmal
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area:annotationsarea:metaprogramming:quotesIssues related to quotes and splicesitype:bugitype:crash
@prolativ

Description

@prolativ
prolativ
opened on Mar 11, 2025

Compiler version

3.3.5, 3.6.4, 3.7.0-RC1-bin-20250309-2f639e2-NIGHTLY

Minimized code

Lib1.scala:

import scala.quoted.*

class myAnnot(value: String) extends scala.annotation.StaticAnnotation

inline def myAnnotValue[A]: Option[String] = ${ myAnnotValueImpl[A] }

def myAnnotValueImpl[A : Type](using Quotes): Expr[Option[String]] =
  Type.of[A] match
    case '[t @ `myAnnot`($value)] => '{ Some($value) }
    case _ => '{ None }

Lib2.scala:

import scala.quoted.*

class myAnnot(value: String) extends scala.annotation.StaticAnnotation

inline def myAnnotValue[A]: Option[String] = ${ myAnnotValueImpl[A] }

def myAnnotValueImpl[A : Type](using Quotes): Expr[Option[String]] =
  Type.of[A] match
    case '[t @ myAnnot($value)] => '{ Some($value) }
    case _ => '{ None }

Test.scala:

@main def run() =
  println(myAnnotValue[Int])
  println(myAnnotValue[Int @myAnnot("abc")])

Output: compiling Lib1.scala and Test.scala

[error] /tmp/repro/Test.scala:2:11
[error] Exception occurred while executing macro expansion.
[error] java.lang.ClassCastException: class scala.Tuple1 cannot be cast to class scala.Tuple2 (scala.Tuple1 and scala.Tuple2 are in unnamed module of loader java.net.URLClassLoader @34c5425e)
[error]         at Lib$package$.myAnnotValueImpl(Lib.scala:9)
[error] 
[error]   println(myAnnotValue[Int])
[error]           ^^^^^^^^^^^^^^^^^

Output: compiling Lib2.scala and Test.scala (click arrow to expand)

[error] /tmp/repro/Lib.scala:9:14
[error] myAnnot does not have a constructor
[error]     case '[t @ myAnnot($value)] => '{ Some($value) }
[error]              ^^^^^^^^^
[error] /tmp/repro/Lib.scala:9:25
[error] Type must be fully defined.
[error] Consider annotating the splice using a type ascription:
[error]   (${value}: XYZ).
[error]     case '[t @ myAnnot($value)] => '{ Some($value) }
[error]                         ^^^^^

  exception occurred while typechecking /tmp/repro/Lib.scala

  An unhandled exception was thrown in the compiler.
  Please file a crash report here:
  https://github.com/scala/scala3/issues/new/choose
  For non-enriched exceptions, compile with -Xno-enrich-error-messages.


     while compiling: /tmp/repro/Lib.scala
        during phase: typer
                mode: Mode(ImplicitsEnabled)
     library version: version 2.13.16
    compiler version: version 3.7.0-RC1-bin-20250309-2f639e2-NIGHTLY-git-2f639e2
            settings: -bootclasspath /Users/mpalka/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala3-library_3/3.7.0-RC1-bin-20250309-2f639e2-NIGHTLY/scala3-library_3-3.7.0-RC1-bin-20250309-2f639e2-NIGHTLY.jar:/Users/mpalka/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.16/scala-library-2.13.16.jar -classpath /private/tmp/repro/.scala-build/.bloop/repro_84fb2551f9/bloop-internal-classes/main-N30Q9UncQOWeS1L0ZinWng==:/private/tmp/repro/.scala-build/.bloop/repro_84fb2551f9/bloop-internal-classes/main-m0yvuymsT9uNMAv4bHWfHg== -d /private/tmp/repro/.scala-build/.bloop/repro_84fb2551f9/bloop-internal-classes/main-N30Q9UncQOWeS1L0ZinWng== -java-output-version 11 -sourceroot /tmp/repro

Error compiling project (Scala 3.7.0-RC1-bin-20250309-2f639e2-NIGHTLY, JVM (11))
Error: dotty.tools.dotc.ast.Trees$UnAssignedTypeException: type of Ident(value) is not assigned
        at dotty.tools.dotc.ast.Trees$Tree.tpe(Trees.scala:74)
        at dotty.tools.dotc.core.Annotations$Annotation$$anon$1.apply(Annotations.scala:67)
        at dotty.tools.dotc.core.Annotations$Annotation$$anon$1.apply(Annotations.scala:64)
        at dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1781)
        at dotty.tools.dotc.core.Annotations$Annotation$$anon$1.apply(Annotations.scala:68)
        at dotty.tools.dotc.core.Annotations$Annotation$$anon$1.apply(Annotations.scala:64)
        at dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.fold$1(Trees.scala:1668)
        at dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.apply(Trees.scala:1670)
        at dotty.tools.dotc.core.Annotations$Annotation.mapWith(Annotations.scala:69)
        at dotty.tools.dotc.core.Types$TypeMap.mapOver(Types.scala:6228)
        at dotty.tools.dotc.typer.Typer$$anon$6.apply(Typer.scala:2226)
        at dotty.tools.dotc.core.Types$TypeMap.op$proxy18$1(Types.scala:6143)
        at dotty.tools.dotc.core.Types$TypeMap.mapArg(Types.scala:6143)
        at dotty.tools.dotc.core.Types$TypeMap.mapArgs(Types.scala:6147)
        at dotty.tools.dotc.core.Types$TypeMap.mapOver(Types.scala:6203)
        at dotty.tools.dotc.typer.Typer$$anon$6.apply(Typer.scala:2226)
        at dotty.tools.dotc.typer.Typer$$anon$5.transform(Typer.scala:2229)
        at dotty.tools.dotc.typer.Typer.caseRest$1(Typer.scala:2266)
        at dotty.tools.dotc.typer.Typer.typedCase(Typer.scala:2289)
        at dotty.tools.dotc.typer.Typer.typedCases$$anonfun$1(Typer.scala:2212)
        at dotty.tools.dotc.core.Decorators$.loop$1(Decorators.scala:99)
        at dotty.tools.dotc.core.Decorators$.mapconserve(Decorators.scala:115)
        at dotty.tools.dotc.typer.Typer.typedCases(Typer.scala:2211)
        at dotty.tools.dotc.typer.Typer.$anonfun$39(Typer.scala:2194)
        at dotty.tools.dotc.typer.Applications.harmonic(Applications.scala:2662)
        at dotty.tools.dotc.typer.Applications.harmonic$(Applications.scala:465)
        at dotty.tools.dotc.typer.Typer.harmonic(Typer.scala:154)
        at dotty.tools.dotc.typer.Typer.typedMatchFinish(Typer.scala:2194)
        at dotty.tools.dotc.typer.Typer.typedMatch(Typer.scala:2122)
        at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:3588)
        at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3658)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3735)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3740)
        at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:3851)
        at dotty.tools.dotc.typer.Typer.$anonfun$66(Typer.scala:2968)
        at dotty.tools.dotc.inlines.PrepareInlineable$.dropInlineIfError(PrepareInlineable.scala:256)
        at dotty.tools.dotc.typer.Typer.typedDefDef(Typer.scala:2968)
        at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:3555)
        at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3657)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3735)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3740)
        at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:3762)
        at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:3808)
        at dotty.tools.dotc.typer.Typer.typedClassDef(Typer.scala:3236)
        at dotty.tools.dotc.typer.Typer.typedTypeOrClassDef$1(Typer.scala:3561)
        at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:3565)
        at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3657)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3735)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3740)
        at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:3762)
        at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:3808)
        at dotty.tools.dotc.typer.Typer.typedPackageDef(Typer.scala:3369)
        at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:3607)
        at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3658)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3735)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3740)
        at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:3851)
        at dotty.tools.dotc.typer.TyperPhase.typeCheck$$anonfun$1(TyperPhase.scala:47)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
        at dotty.tools.dotc.core.Phases$Phase.monitor(Phases.scala:510)
        at dotty.tools.dotc.typer.TyperPhase.typeCheck(TyperPhase.scala:53)
        at dotty.tools.dotc.typer.TyperPhase.$anonfun$4(TyperPhase.scala:99)
        at scala.collection.Iterator$$anon$6.hasNext(Iterator.scala:479)
        at scala.collection.Iterator$$anon$9.hasNext(Iterator.scala:583)
        at scala.collection.immutable.List.prependedAll(List.scala:152)
        at scala.collection.immutable.List$.from(List.scala:685)
        at scala.collection.immutable.List$.from(List.scala:682)
        at scala.collection.IterableOps$WithFilter.map(Iterable.scala:900)
        at dotty.tools.dotc.typer.TyperPhase.runOn(TyperPhase.scala:98)
        at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:346)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
        at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1324)
        at dotty.tools.dotc.Run.runPhases$1(Run.scala:339)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$2(Run.scala:386)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$adapted$1(Run.scala:386)
        at scala.Function0.apply$mcV$sp(Function0.scala:42)
        at dotty.tools.dotc.Run.showProgress(Run.scala:448)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:386)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:398)
        at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
        at dotty.tools.dotc.Run.compileUnits(Run.scala:398)
        at dotty.tools.dotc.Run.compileSources(Run.scala:285)
        at dotty.tools.dotc.Run.compile(Run.scala:270)
        at dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
        at dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)
        at dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
        at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.compileSources$1(BloopHighLevelCompiler.scala:148)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.$anonfun$compile$9(BloopHighLevelCompiler.scala:181)
        at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.$anonfun$compile$1(BloopHighLevelCompiler.scala:73)
        at bloop.tracing.NoopTracer$.trace(BraveTracer.scala:53)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.timed$1(BloopHighLevelCompiler.scala:72)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.$anonfun$compile$8(BloopHighLevelCompiler.scala:181)
        at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
        at monix.eval.internal.TaskRunLoop$.startFull(TaskRunLoop.scala:81)
        at monix.eval.internal.TaskRestartCallback.syncOnSuccess(TaskRestartCallback.scala:101)
        at monix.eval.internal.TaskRestartCallback.onSuccess(TaskRestartCallback.scala:74)
        at monix.eval.internal.TaskExecuteOn$AsyncRegister$$anon$1.run(TaskExecuteOn.scala:71)
        at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1395)
        at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
        at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
        at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
        at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
        at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)

Error: Unexpected error when compiling repro_84fb2551f9: dotty.tools.dotc.ast.Trees$UnAssignedTypeException: type of Ident(value) is not assigned
        at dotty.tools.dotc.ast.Trees$Tree.tpe(Trees.scala:74)
        at dotty.tools.dotc.core.Annotations$Annotation$$anon$1.apply(Annotations.scala:67)
        at dotty.tools.dotc.core.Annotations$Annotation$$anon$1.apply(Annotations.scala:64)
        at dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1781)
        at dotty.tools.dotc.core.Annotations$Annotation$$anon$1.apply(Annotations.scala:68)
        at dotty.tools.dotc.core.Annotations$Annotation$$anon$1.apply(Annotations.scala:64)
        at dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.fold$1(Trees.scala:1668)
        at dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.apply(Trees.scala:1670)
        at dotty.tools.dotc.core.Annotations$Annotation.mapWith(Annotations.scala:69)
        at dotty.tools.dotc.core.Types$TypeMap.mapOver(Types.scala:6228)
        at dotty.tools.dotc.typer.Typer$$anon$6.apply(Typer.scala:2226)
        at dotty.tools.dotc.core.Types$TypeMap.op$proxy18$1(Types.scala:6143)
        at dotty.tools.dotc.core.Types$TypeMap.mapArg(Types.scala:6143)
        at dotty.tools.dotc.core.Types$TypeMap.mapArgs(Types.scala:6147)
        at dotty.tools.dotc.core.Types$TypeMap.mapOver(Types.scala:6203)
        at dotty.tools.dotc.typer.Typer$$anon$6.apply(Typer.scala:2226)
        at dotty.tools.dotc.typer.Typer$$anon$5.transform(Typer.scala:2229)
        at dotty.tools.dotc.typer.Typer.caseRest$1(Typer.scala:2266)
        at dotty.tools.dotc.typer.Typer.typedCase(Typer.scala:2289)
        at dotty.tools.dotc.typer.Typer.typedCases$$anonfun$1(Typer.scala:2212)
        at dotty.tools.dotc.core.Decorators$.loop$1(Decorators.scala:99)
        at dotty.tools.dotc.core.Decorators$.mapconserve(Decorators.scala:115)
        at dotty.tools.dotc.typer.Typer.typedCases(Typer.scala:2211)
        at dotty.tools.dotc.typer.Typer.$anonfun$39(Typer.scala:2194)
        at dotty.tools.dotc.typer.Applications.harmonic(Applications.scala:2662)
        at dotty.tools.dotc.typer.Applications.harmonic$(Applications.scala:465)
        at dotty.tools.dotc.typer.Typer.harmonic(Typer.scala:154)
        at dotty.tools.dotc.typer.Typer.typedMatchFinish(Typer.scala:2194)
        at dotty.tools.dotc.typer.Typer.typedMatch(Typer.scala:2122)
        at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:3588)
        at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3658)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3735)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3740)
        at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:3851)
        at dotty.tools.dotc.typer.Typer.$anonfun$66(Typer.scala:2968)
        at dotty.tools.dotc.inlines.PrepareInlineable$.dropInlineIfError(PrepareInlineable.scala:256)
        at dotty.tools.dotc.typer.Typer.typedDefDef(Typer.scala:2968)
        at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:3555)
        at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3657)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3735)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3740)
        at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:3762)
        at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:3808)
        at dotty.tools.dotc.typer.Typer.typedClassDef(Typer.scala:3236)
        at dotty.tools.dotc.typer.Typer.typedTypeOrClassDef$1(Typer.scala:3561)
        at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:3565)
        at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3657)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3735)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3740)
        at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:3762)
        at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:3808)
        at dotty.tools.dotc.typer.Typer.typedPackageDef(Typer.scala:3369)
        at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:3607)
        at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3658)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3735)
        at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3740)
        at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:3851)
        at dotty.tools.dotc.typer.TyperPhase.typeCheck$$anonfun$1(TyperPhase.scala:47)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
        at dotty.tools.dotc.core.Phases$Phase.monitor(Phases.scala:510)
        at dotty.tools.dotc.typer.TyperPhase.typeCheck(TyperPhase.scala:53)
        at dotty.tools.dotc.typer.TyperPhase.$anonfun$4(TyperPhase.scala:99)
        at scala.collection.Iterator$$anon$6.hasNext(Iterator.scala:479)
        at scala.collection.Iterator$$anon$9.hasNext(Iterator.scala:583)
        at scala.collection.immutable.List.prependedAll(List.scala:152)
        at scala.collection.immutable.List$.from(List.scala:685)
        at scala.collection.immutable.List$.from(List.scala:682)
        at scala.collection.IterableOps$WithFilter.map(Iterable.scala:900)
        at dotty.tools.dotc.typer.TyperPhase.runOn(TyperPhase.scala:98)
        at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:346)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
        at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1324)
        at dotty.tools.dotc.Run.runPhases$1(Run.scala:339)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$2(Run.scala:386)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$adapted$1(Run.scala:386)
        at scala.Function0.apply$mcV$sp(Function0.scala:42)
        at dotty.tools.dotc.Run.showProgress(Run.scala:448)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:386)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:398)
        at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
        at dotty.tools.dotc.Run.compileUnits(Run.scala:398)
        at dotty.tools.dotc.Run.compileSources(Run.scala:285)
        at dotty.tools.dotc.Run.compile(Run.scala:270)
        at dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
        at dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)
        at dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
        at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.compileSources$1(BloopHighLevelCompiler.scala:148)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.$anonfun$compile$9(BloopHighLevelCompiler.scala:181)
        at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.$anonfun$compile$1(BloopHighLevelCompiler.scala:73)
        at bloop.tracing.NoopTracer$.trace(BraveTracer.scala:53)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.timed$1(BloopHighLevelCompiler.scala:72)
        at sbt.internal.inc.bloop.internal.BloopHighLevelCompiler.$anonfun$compile$8(BloopHighLevelCompiler.scala:181)
        at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
        at monix.eval.internal.TaskRunLoop$.startFull(TaskRunLoop.scala:81)
        at monix.eval.internal.TaskRestartCallback.syncOnSuccess(TaskRestartCallback.scala:101)
        at monix.eval.internal.TaskRestartCallback.onSuccess(TaskRestartCallback.scala:74)
        at monix.eval.internal.TaskExecuteOn$AsyncRegister$$anon$1.run(TaskExecuteOn.scala:71)
        at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1395)
        at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
        at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
        at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
        at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
        at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)

Note

Lib1.scala and Lib2.scala differ only in @ myAnnot with or without backticks

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