Error using bash process substitution with Scala Native and Scala.JS

[alexarchambault]

Version(s) 0.1.12

Describe the bug Using bash process substitution with Scala Native doesn't work (Scala Native complains about missing definitions when linking)

To Reproduce

$ scala-cli run --native -S 2.13.8 <(echo 'println("Hello")')
Compiling project (Scala 2.13.8, Scala Native)
Compiled project (Scala 2.13.8, Scala Native)
[error] Found 2 missing definitions while linking
[error] Not found Top(input$minus1_sc)
[error] Not found Member(Top(input$minus1_sc),D4mainLAL16java.lang.String_uEo)
Exception in thread "main" scala.scalanative.linker.LinkingException: Undefined definitions found in reachability phase
	at scala.scalanative.linker.Reach.fail(Reach.scala:976)
	at scala.scalanative.linker.Reach.reportMissing(Reach.scala:971)
	at scala.scalanative.linker.Reach.result(Reach.scala:47)
	at scala.scalanative.linker.Reach$.apply(Reach.scala:989)
	at scala.scalanative.linker.Link$.apply(Link.scala:13)
	at scala.scalanative.build.ScalaNative$.$anonfun$link$1(ScalaNative.scala:32)
	at scala.scalanative.build.Logger.time(Logger.scala:35)
	at scala.scalanative.build.Logger.time$(Logger.scala:32)
	at scala.scalanative.cli.utils.FilteredLogger.time(FilteredLogger.scala:5)
	at scala.scalanative.build.ScalaNative$.link(ScalaNative.scala:32)
	at scala.scalanative.build.Build$.$anonfun$build$1(Build.scala:65)
	at scala.scalanative.build.Logger.time(Logger.scala:35)
	at scala.scalanative.build.Logger.time$(Logger.scala:32)
	at scala.scalanative.cli.utils.FilteredLogger.time(FilteredLogger.scala:5)
	at scala.scalanative.build.Build$.build(Build.scala:55)
	at scala.scalanative.cli.ScalaNativeLd$.$anonfun$runLd$3(ScalaNativeLd.scala:71)
	at scala.scalanative.util.Scope$.apply(Scope.scala:32)
	at scala.scalanative.cli.ScalaNativeLd$.runLd(ScalaNativeLd.scala:70)
	at scala.scalanative.cli.ScalaNativeLd$.main(ScalaNativeLd.scala:44)
	at scala.scalanative.cli.ScalaNativeLd.main(ScalaNativeLd.scala)
Error: scala.build.errors.ScalaNativeBuildError: Error compiling with Scala Native
For more details, please see '~/Library/Caches/ScalaCli/virtual-projects/9f/project-5324e786/.scala-build/stacktraces/1662635545-17065505834168618015.log'

$ cat ~/Library/Caches/ScalaCli/virtual-projects/9f/project-5324e786/.scala-build/stacktraces/1662635545-17065505834168618015.log
scala.build.errors.ScalaNativeBuildError: Error compiling with Scala Native
  scala.cli.commands.Package$.buildNative$$anonfun$1(Package.scala:964)
  scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
  scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
  scala.cli.packaging.Library$.withLibraryJar(Library.scala:26)
  scala.cli.commands.Package$.buildNative(Package.scala:964)
  scala.cli.commands.Run$.withNativeLauncher(Run.scala:478)
  scala.cli.commands.Run$.runOnce$$anonfun$1(Run.scala:375)
  scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
  scala.cli.commands.Run$.runOnce(Run.scala:444)
  scala.cli.commands.Run$.maybeRunOnce$$anonfun$1(Run.scala:297)
  scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
  scala.cli.commands.Run$.maybeRunOnce(Run.scala:300)
  scala.cli.commands.Run$.maybeRun$1$$anonfun$1(Run.scala:137)
  scala.build.EitherCps$Helper.apply(EitherCps.scala:19)
  scala.cli.commands.Run$.maybeRun$1(Run.scala:167)
  scala.cli.commands.Run$.run(Run.scala:251)
  scala.cli.commands.Run$.run(Run.scala:48)
  scala.cli.commands.Run$.run(Run.scala:42)
  caseapp.core.app.CaseApp.main(CaseApp.scala:149)
  caseapp.core.app.CommandsEntryPoint.main(CommandsEntryPoint.scala:120)
  scala.cli.ScalaCliCommands.main(ScalaCliCommands.scala:121)
  scala.cli.ScalaCli$.main0(ScalaCli.scala:188)
  scala.cli.ScalaCli$.main(ScalaCli.scala:92)
  scala.cli.ScalaCli.main(ScalaCli.scala)

Expected behaviour

$ scala-cli run --native -S 2.13.8 <(echo 'println("Hello")')
…
Hello

[alexarchambault]

Same with Scala.JS:

$ scala-cli run --js -S 2.13.8 <(echo 'println("Hello")')
Referring to non-existent class input$minus1_sc
  called from core module module initializers
Referring to non-existent method static input$minus1_sc.main([java.lang.String)void
  called from core module module initializers
Exception in thread "main" org.scalajs.linker.interface.LinkingException: There were linking errors
	at org.scalajs.linker.frontend.BaseLinker.reportErrors$1(BaseLinker.scala:91)
	at org.scalajs.linker.frontend.BaseLinker.$anonfun$analyze$5(BaseLinker.scala:100)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1395)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
	at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
	at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)
	at com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine(PlatformThreads.java:704)
	at com.oracle.svm.core.posix.thread.PosixPlatformThreads.pthreadStartRoutine(PosixPlatformThreads.java:202)
[error]  Error linking Scala.js

[alexarchambault]

But it works on the JVM:

$ scala-cli run -S 2.13.8 <(echo 'println("Hello")')
Hello

[alexarchambault]

Note that it works fine when using piping (cat foo.sc | scala-cli … _.sc or passing a script directly, like scala-cli … foo.sc).

[kiendang]

Ran into this yesterday when testing out scalapy. Looks like an upstream bug. For Scala 2, Scala JS and Scala Native would fail to run if there's $ in the name of the object with main method.

This would fail, even outside of scala-cli (I tested with sbt).

object some$object {
  def main(args: Array[String]): Unit =
    println("Hello")
}

[error] Found 2 missing definitions while linking
[error] Not found Top(some$object)
[error] Not found Member(Top(some$object),D4mainLAL16java.lang.String_uEo)
[error] Undefined definitions found in reachability phase
[error] (Compile / nativeLink) Undefined definitions found in reachability phase
[error] Total time: 4 s, completed 16 Sept 2022, 16:50:41

I think the same issue caused #1266.