Crash while compiling ScalaJS

[cornim]

Compiler version

3.3.1

Minimized code

package scalajs

import java.nio.ByteBuffer
import org.scalajs.dom
import org.scalajs.dom.{Blob, FormData}

import scala.concurrent.{Future, Promise}
import scala.language.implicitConversions
import scala.scalajs.js
import scala.scalajs.js.typedarray.ArrayBufferView
import scala.scalajs.js.typedarray.TypedArrayBufferOps._

/** Wraps an XMLHttpRequest to provide an easy one-line way of making an Ajax call, returning a Future. */
object Ajax {

  /** Supported data formats for Ajax are implicitly converted to InputData */
  @js.native
  sealed trait InputData extends js.Any

  object InputData {
    implicit def str2ajax(s: String): InputData = s.asInstanceOf[InputData]

    implicit def arrayBufferView2ajax(b: ArrayBufferView): InputData =
      b.asInstanceOf[InputData]

    implicit def blob2ajax(b: Blob): InputData = b.asInstanceOf[InputData]

    implicit def formdata2ajax(b: FormData): InputData =
      b.asInstanceOf[InputData]

    implicit def byteBuffer2ajax(data: ByteBuffer): InputData = {
      if (data.hasTypedArray()) {
        // get relevant part of the underlying typed array
        data.typedArray().subarray(data.position, data.limit)
      } else {
        // fall back to copying the data
        val tempBuffer = ByteBuffer.allocateDirect(data.remaining)
        val origPosition = data.position()
        tempBuffer.put(data)
        data.position(origPosition)
        tempBuffer.typedArray()
      }
    }
  }

  def get(url: String, data: InputData = null, timeout: Int = 0, headers: Map[String, String] = Map.empty,
          withCredentials: Boolean = false, responseType: String = ""): Future[dom.XMLHttpRequest] = {
    apply("GET", url, data, timeout, headers, withCredentials, responseType)
  }

  def post(url: String, data: InputData = null, timeout: Int = 0, headers: Map[String, String] = Map.empty,
           withCredentials: Boolean = false, responseType: String = ""): Future[dom.XMLHttpRequest] = {
    apply("POST", url, data, timeout, headers, withCredentials, responseType)
  }

  def put(url: String, data: InputData = null, timeout: Int = 0, headers: Map[String, String] = Map.empty,
          withCredentials: Boolean = false, responseType: String = ""): Future[dom.XMLHttpRequest] = {
    apply("PUT", url, data, timeout, headers, withCredentials, responseType)
  }

  def patch(url: String, data: InputData = null, timeout: Int = 0, headers: Map[String, String] = Map.empty,
            withCredentials: Boolean = false, responseType: String = ""): Future[dom.XMLHttpRequest] = {
    apply("PATCH", url, data, timeout, headers, withCredentials, responseType)
  }

  def delete(url: String, data: InputData = null, timeout: Int = 0, headers: Map[String, String] = Map.empty,
             withCredentials: Boolean = false, responseType: String = ""): Future[dom.XMLHttpRequest] = {
    apply("DELETE", url, data, timeout, headers, withCredentials, responseType)
  }

  def apply(method: String, url: String, data: InputData, timeout: Int, headers: Map[String, String],
            withCredentials: Boolean, responseType: String): Future[dom.XMLHttpRequest] = {
    val req = new dom.XMLHttpRequest()
    val promise = Promise[dom.XMLHttpRequest]()

    req.onreadystatechange = { _ =>
      if (req.readyState == 4) {
        if ((req.status >= 200 && req.status < 300) || req.status == 304)
          promise.success(req)
        else
          promise.failure(AjaxException(req))
      }
    }
    req.open(method, url)
    req.responseType = responseType
    req.timeout = timeout
    req.withCredentials = withCredentials
    headers.foreach(x => req.setRequestHeader(x._1, x._2))
    if (data == null)
      req.send()
    else
      req.send(data)
    promise.future
  }
}

/** Thrown when `Ajax.get` or `Ajax.post` receives a non-20X response code. Contains the XMLHttpRequest that resulted in
 * that response
 */
case class AjaxException(xhr: dom.XMLHttpRequest) extends Exception {
  def isTimeout: Boolean = xhr.status == 0 && xhr.readyState == 4
}

// This is just there to work around some weird warnings in Scala 3.x
object AjaxException extends (dom.XMLHttpRequest => AjaxException)

Output (click arrow to expand)

Details

unhandled exception while running genSJSIR on /builds/ProjectForecast/project-forecast/scalajs/src/main/scala/scalajs/Ajax.scala
  An unhandled exception was thrown in the compiler.
  Please file a crash report here:
  https://github.com/lampepfl/dotty/issues/new/choose
     while compiling: <no file>
        during phase: <no phase>
                mode: Mode(ImplicitsEnabled)
     library version: version 2.13.10
    compiler version: version 3.3.1
            settings: -Xplugin List(target/scala-3.3.1/compiler_plugins/wartremover_3.3.1-3.1.6.jar) -bootclasspath /builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/scala-lang/scala3-library_3/3.3.1/scala3-library_3-3.3.1.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.10/scala-library-2.13.10.jar -classpath /builds/ProjectForecast/project-forecast/scalajs/target/scala-3.3.1/classes:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/scala-lang/scala3-library_sjs1_3/3.3.1/scala3-library_sjs1_3-3.3.1.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/scala-js/scalajs-library_2.13/1.16.0/scalajs-library_2.13-1.16.0.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/scala-js/scalajs-dom_sjs1_3/2.6.0/scalajs-dom_sjs1_3-2.6.0.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/io/lemonlabs/scala-uri_sjs1_3/4.0.0/scala-uri_sjs1_3-4.0.0.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/scala-js/scalajs-javalib/1.16.0/scalajs-javalib-1.16.0.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/scala-js/scalajs-scalalib_2.13/2.13.13%2B1.16.0/scalajs-scalalib_2.13-2.13.13%2B1.16.0.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/typelevel/cats-core_sjs1_3/2.7.0/cats-core_sjs1_3-2.7.0.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/typelevel/cats-parse_sjs1_3/0.3.6/cats-parse_sjs1_3-0.3.6.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/typelevel/cats-kernel_sjs1_3/2.7.0/cats-kernel_sjs1_3-2.7.0.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/typelevel/simulacrum-scalafix-annotations_3/0.5.4/simulacrum-scalafix-annotations_3-0.5.4.jar:/builds/ProjectForecast/project-forecast/sbt-cache/.coursier/cache/https/repo1.maven.org/maven2/org/scala-lang/scala3-library_3/3.0.0/scala3-library_3-3.0.0.jar -coverage-out /builds/ProjectForecast/project-forecast/scalajs/target/scala-3.3.1/scoverage-data -d /builds/ProjectForecast/project-forecast/scalajs/target/scala-3.3.1/classes -scalajs true
                tree: EmptyTree
       tree position: :<unknown>
           tree type: <notype>
              symbol: val <none>
           call site: package <root> in module class <root>
  == Source file context for tree position ==
[error] ## Exception when compiling 4 sources to /builds/ProjectForecast/project-forecast/scalajs/target/scala-3.3.1/classes
[error] org.scalajs.ir.InvalidIRException: Cannot hash a transient IR node (its value is of class class dotty.tools.backend.sjs.JSCodeGen$UndefinedParam$)
[error] org.scalajs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:552)
[error] org.scalajs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:560)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:333)
[error] org.scalajs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:560)
[error] org.scalajs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:170)
[error] org.scalajs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:560)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:333)
[error] org.scalajs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:560)
[error] org.scalajs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:170)
[error] org.scalajs.ir.Hashers$.hashMethodDef$$anonfun$1(Hashers.scala:38)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.Option.foreach(Option.scala:437)
[error] org.scalajs.ir.Hashers$.hashMethodDef(Hashers.scala:38)
[error] org.scalajs.ir.Hashers$.hashMemberDefs$$anonfun$1(Hashers.scala:93)
[error] scala.collection.immutable.List.map(List.scala:250)
[error] org.scalajs.ir.Hashers$.hashMemberDefs(Hashers.scala:97)
[error] dotty.tools.backend.sjs.JSCodeGen.genScalaClass(JSCodeGen.scala:463)
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3$$anonfun$1(JSCodeGen.scala:245)
[error] dotty.tools.backend.sjs.ScopedVar$.withScopedVars(ScopedVar.scala:33)
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3(JSCodeGen.scala:249)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:333)
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit(JSCodeGen.scala:251)
[error] dotty.tools.backend.sjs.JSCodeGen.run(JSCodeGen.scala:163)
[error] dotty.tools.backend.sjs.GenSJSIR.run(GenSJSIR.scala:18)
[error] dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:327)
[error] scala.collection.immutable.List.map(List.scala:246)
[error] dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:331)
[error] dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:246)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1321)
[error] dotty.tools.dotc.Run.runPhases$1(Run.scala:262)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:270)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:279)
[error] dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:67)
[error] dotty.tools.dotc.Run.compileUnits(Run.scala:279)
[error] dotty.tools.dotc.Run.compileSources(Run.scala:194)
[error] dotty.tools.dotc.Run.compile(Run.scala:179)
[error] dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
[error] dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:88)
[error] dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
[error] sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:192)
[error] scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[error] sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:247)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:182)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163)
[error] sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:210)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:528)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:528)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:177)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:175)
[error] sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:461)
[error] sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
[error] sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263)
[error] sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:416)
[error] sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:503)
[error] sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:403)
[error] sbt.internal.inc.Incremental$.apply(Incremental.scala:169)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:528)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:482)
[error] sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:420)
[error] sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
[error] sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2366)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2316)
[error] sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:30)
[error] sbt.internal.io.Retry$.apply(Retry.scala:46)
[error] sbt.internal.io.Retry$.apply(Retry.scala:28)
[error] sbt.internal.io.Retry$.apply(Retry.scala:23)
[error] sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:30)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2314)
[error] scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error] sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error] sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error] sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error] sbt.Execute.work(Execute.scala:291)
[error] sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error] sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[error] java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[error] java.base/java.lang.Thread.run(Thread.java:[840](https://gitlab.internal.d-fine.dev/ProjectForecast/project-forecast/-/jobs/302920#L840))
[error]

I'm happy to provide additional infos. Just let me know what you need.

[cornim]

I couldn't figure out, why this was only happening in my pipeline and locally everything compiled fine until I tried something which seemed unreasonable to me at first glance.

Locally I ran sbt clean test.

The pipelline runs sbt clean coverage test using addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.0.11") and this apperantly is exactly what is causing the issue. I hope this helps.

[sjrd]

Is this scoverage/scalac-scoverage-plugin#447 yet again?

[counter2015]

I have meet the same problem. The pipline runs sbt coverage test coverageReport

My plugins

// sbt-scoverage https://github.com/scoverage/sbt-scoverage
addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.3.0")

Compiler Version: 3.7.2

The crash log

click here to see full output

Run sbt coverage test coverageReport
[info] [launcher] getting org.scala-sbt sbt 1.11.5  (this may take some time)...
[info] [launcher] getting Scala 2.12.20 (for sbt)...
[info] welcome to sbt 1.11.5 (Eclipse Adoptium Java 21.0.8)
[info] loading settings for project wenchu-build from plugins.sbt...
[info] loading project definition from /home/runner/work/WenChu/WenChu/project
[info] compiling 1 Scala source to /home/runner/work/WenChu/WenChu/project/target/scala-2.12/sbt-1.0/classes ...
[info] Non-compiled module 'compiler-bridge_2.12' for Scala 2.12.20. Compiling...
[info]   Compilation completed in 13.663s.
[info] done compiling
[info] loading settings for project rootProject from build.sbt...
[info] set current project to WenChu (in build file:/home/runner/work/WenChu/WenChu/)
[info] Defining ThisBuild / coverageEnabled
[info] The new value will be used by Compile / compile / scalacOptions, backend / Compile / compile / scalacOptions and 7 others.
[info] 	Run `last` for details.
[info] Reapplying settings...
[info] set current project to WenChu (in build file:/home/runner/work/WenChu/WenChu/)
[info] scalafmt: Formatting 1 Scala sources (/home/runner/work/WenChu/WenChu/shared/.jvm)...
[info] scalafmt: Formatting 1 Scala sources (/home/runner/work/WenChu/WenChu/shared/.js)...
[info] compiling 1 Scala source to /home/runner/work/WenChu/WenChu/shared/.jvm/target/scala-3.7.2/classes ...
[info] compiling 1 Scala source to /home/runner/work/WenChu/WenChu/shared/.js/target/scala-3.7.2/classes ...
[info] done compiling
[info] scalafmt: Formatting 2 Scala sources (/home/runner/work/WenChu/WenChu/frontend)...
[info] done compiling
[info] Running scalafix on 1 Scala sources
[info] Running scalafix on 1 Scala sources
[info] compiling 2 Scala sources to /home/runner/work/WenChu/WenChu/frontend/target/scala-3.7.2/classes ...
  unhandled exception while running genSJSIR on /home/runner/work/WenChu/WenChu/frontend/src/main/scala/com/counter2015/wenchu/Frontend.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: /home/runner/work/WenChu/WenChu/frontend/src/main/scala/com/counter2015/wenchu/Frontend.scala
        during phase: genSJSIR
                mode: Mode(ImplicitsEnabled,ReadPositions)
     library version: version 2.13.16
    compiler version: version 3.7.2
            settings: -Wunused List(all) -Xsemanticdb true -classpath /home/runner/work/WenChu/WenChu/frontend/target/scala-3.7.2/classes:/home/runner/work/WenChu/WenChu/shared/.js/target/scala-3.7.2/classes:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala3-library_sjs1_3/3.7.2/scala3-library_sjs1_3-3.7.2.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-library_2.13/1.19.0/scalajs-library_2.13-1.19.0.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-dom_sjs1_3/2.4.0/scalajs-dom_sjs1_3-2.4.0.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/io/circe/circe-core_sjs1_3/0.14.14/circe-core_sjs1_3-0.14.14.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/io/circe/circe-generic_sjs1_3/0.14.14/circe-generic_sjs1_3-0.14.14.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/io/circe/circe-parser_sjs1_3/0.14.14/circe-parser_sjs1_3-0.14.14.jar:/home/runner/.cache/coursier/v
[error] ## Exception when compiling 2 sources to /home/runner/work/WenChu/WenChu/frontend/target/scala-3.7.2/classes
[error] dotty.tools.sjs.ir.InvalidIRException: Cannot hash a transient IR node (its value is of class class dotty.tools.backend.sjs.JSCodeGen$UndefinedParam$)
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:562)
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:570)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:334)
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:570)
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:185)
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:570)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:334)
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:570)
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:185)
[error] dotty.tools.sjs.ir.Hashers$.hashMethodDef$$anonfun$1(Hashers.scala:38)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.Option.foreach(Option.scala:437)
[error] dotty.tools.sjs.ir.Hashers$.hashMethodDef(Hashers.scala:38)
[error] dotty.tools.sjs.ir.Hashers$.$anonfun$1(Hashers.scala:126)
[error] scala.collection.immutable.List.map(List.scala:251)
[error] dotty.tools.sjs.ir.Hashers$.hashClassDef(Hashers.scala:126)
[error] dotty.tools.backend.sjs.JSCodeGen.genScalaClass(JSCodeGen.scala:501)
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3$$anonfun$1(JSCodeGen.scala:254)
[error] dotty.tools.backend.sjs.ScopedVar$.withScopedVars(ScopedVar.scala:33)
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3(JSCodeGen.scala:258)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:334)
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit(JSCodeGen.scala:234)
[error] dotty.tools.backend.sjs.JSCodeGen.run(JSCodeGen.scala:172)
[error] dotty.tools.backend.sjs.GenSJSIR.run(GenSJSIR.scala:21)
[error] dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:383)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:334)
[error] dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:376)
[error] dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:368)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1324)
[error] dotty.tools.dotc.Run.runPhases$1(Run.scala:361)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$2(Run.scala:408)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$adapted$1(Run.scala:408)
[error] scala.Function0.apply$mcV$sp(Function0.scala:42)
[error] dotty.tools.dotc.Run.showProgress(Run.scala:470)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:408)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:420)
[error] dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
[error] dotty.tools.dotc.Run.compileUnits(Run.scala:420)
[error] dotty.tools.dotc.Run.compileSources(Run.scala:307)
[error] dotty.tools.dotc.Run.compile(Run.scala:292)
[error] dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
[error] dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)
[error] dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
[error] sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:196)
[error] scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[error] sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:252)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:186)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:166)
[error] sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:241)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:166)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:214)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:542)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:542)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$3(Incremental.scala:182)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$3$adapted(Incremental.scala:180)
[error] sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:458)
[error] sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
[error] sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:264)
[error] sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:413)
[error] sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:500)
[error] sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:400)
[error] sbt.internal.inc.Incremental$.apply(Incremental.scala:208)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:542)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:496)
[error] sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:433)
[error] sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
[error] sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2489)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2439)
[error] sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:41)
[error] sbt.internal.io.Retry$.sbt$internal$io$Retry$$impl(Retry.scala:114)
[error] sbt.internal.io.Retry$.io(Retry.scala:102)
[error] sbt.internal.io.Retry$.io(Retry.scala:78)
[error] sbt.internal.io.Retry$.io(Retry.scala:67)
[error] sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:41)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2437)
[error] scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:63)
[error] sbt.std.Transform$$anon$4.work(Transform.scala:69)
[error] sbt.Execute.$anonfun$submit$2(Execute.scala:283)
[error] sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:24)
[error] sbt.Execute.work(Execute.scala:292)
[error] sbt.Execute.$anonfun$submit$1(Execute.scala:283)
[error] sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] sbt.CompletionService$$anon$2.call(CompletionService.scala:65)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error] java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error] java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
[error] java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
[error] java.base/java.lang.Thread.run(Thread.java:1583)
[error]            
[info] scalafmt: Formatting 2 Scala sources (/home/runner/work/WenChu/WenChu/backend)...
[info] Fast optimizing /home/runner/work/WenChu/WenChu/shared/.js/target/scala-3.7.2/wenchu-shared-test-fastopt
[info] compiling 2 Scala sources to /home/runner/work/WenChu/WenChu/backend/target/scala-3.7.2/classes ...
[info] done compiling
[error] dotty.tools.sjs.ir.InvalidIRException: Cannot hash a transient IR node (its value is of class class dotty.tools.backend.sjs.JSCodeGen$UndefinedParam$)
[error] 	at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:562)
[error] 	at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:570)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.collection.immutable.List.foreach(List.scala:334)
[error] 	at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:570)
[error] 	at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:185)
[error] 	at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:570)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.collection.immutable.List.foreach(List.scala:334)
[error] 	at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:570)
[error] 	at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:185)
[error] 	at dotty.tools.sjs.ir.Hashers$.hashMethodDef$$anonfun$1(Hashers.scala:38)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.Option.foreach(Option.scala:437)
[error] 	at dotty.tools.sjs.ir.Hashers$.hashMethodDef(Hashers.scala:38)
[error] 	at dotty.tools.sjs.ir.Hashers$.$anonfun$1(Hashers.scala:126)
[error] 	at scala.collection.immutable.List.map(List.scala:251)
[error] 	at dotty.tools.sjs.ir.Hashers$.hashClassDef(Hashers.scala:126)
[error] 	at dotty.tools.backend.sjs.JSCodeGen.genScalaClass(JSCodeGen.scala:501)
[error] 	at dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3$$anonfun$1(JSCodeGen.scala:254)
[error] 	at dotty.tools.backend.sjs.ScopedVar$.withScopedVars(ScopedVar.scala:33)
[error] 	at dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3(JSCodeGen.scala:258)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.collection.immutable.List.foreach(List.scala:334)
[error] 	at dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit(JSCodeGen.scala:234)
[error] 	at dotty.tools.backend.sjs.JSCodeGen.run(JSCodeGen.scala:172)
[error] 	at dotty.tools.backend.sjs.GenSJSIR.run(GenSJSIR.scala:21)
[error] 	at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:383)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.collection.immutable.List.foreach(List.scala:334)
[error] 	at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:376)
[error] 	at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:368)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1324)
[error] 	at dotty.tools.dotc.Run.runPhases$1(Run.scala:361)
[error] 	at dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$2(Run.scala:408)
[error] 	at dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$adapted$1(Run.scala:408)
[error] 	at scala.Function0.apply$mcV$sp(Function0.scala:42)
[error] 	at dotty.tools.dotc.Run.showProgress(Run.scala:470)
[error] 	at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:408)
[error] 	at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:420)
[error] 	at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
[error] 	at dotty.tools.dotc.Run.compileUnits(Run.scala:420)
[error] 	at dotty.tools.dotc.Run.compileSources(Run.scala:307)
[error] 	at dotty.tools.dotc.Run.compile(Run.scala:292)
[error] 	at dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
[error] 	at dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)
[error] 	at dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
[error] 	at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:196)
[error] 	at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:252)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:186)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:166)
[error] 	at sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:241)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:166)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:214)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:542)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:542)
[error] 	at sbt.internal.inc.Incremental$.$anonfun$apply$3(Incremental.scala:182)
[error] 	at sbt.internal.inc.Incremental$.$anonfun$apply$3$adapted(Incremental.scala:180)
[error] 	at sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:458)
[error] 	at sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
[error] 	at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
[error] 	at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
[error] 	at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:264)
[error] 	at sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:413)
[error] 	at sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:500)
[error] 	at sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:400)
[error] 	at sbt.internal.inc.Incremental$.apply(Incremental.scala:208)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:542)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:496)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:433)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
[error] 	at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2489)
[error] 	at sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2439)
[error] 	at sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:41)
[error] 	at sbt.internal.io.Retry$.sbt$internal$io$Retry$$impl(Retry.scala:114)
[error] 	at sbt.internal.io.Retry$.io(Retry.scala:102)
[error] 	at sbt.internal.io.Retry$.io(Retry.scala:78)
[error] 	at sbt.internal.io.Retry$.io(Retry.scala:67)
[error] 	at sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:41)
[error] 	at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2437)
[error] 	at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] 	at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:63)
[error] 	at sbt.std.Transform$$anon$4.work(Transform.scala:69)
[error] 	at sbt.Execute.$anonfun$submit$2(Execute.scala:283)
[error] 	at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:24)
[error] 	at sbt.Execute.work(Execute.scala:292)
[error] 	at sbt.Execute.$anonfun$submit$1(Execute.scala:283)
[error] 	at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] 	at sbt.CompletionService$$anon$2.call(CompletionService.scala:65)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error] 	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
[error] 	at java.base/java.lang.Thread.run(Thread.java:1583)
[error] (frontend / Compile / compileIncremental) dotty.tools.sjs.ir.InvalidIRException: Cannot hash a transient IR node (its value is of class class dotty.tools.backend.sjs.JSCodeGen$UndefinedParam$)
[error] Total time: 43 s, completed Sep 10, 2025, 11:09:36 AM

Error: Process completed with exit code 1.

[tgodzik]

@sjrd any idea where to look? We have a reproduction and I wanted to try and fix it, but I am a bit lost.

[sjrd]

Look into the phase for coverage. It should not add coverage around calls to $default methods.

[tgodzik]

I started looking into this and have a potential fix in https://github.com/scala/scala3/compare/main...tgodzik:scala3:fix-scalajs-coverage?expand=1 but is anyone able to provide some reproduction? Or potentially check out the fix?

[counter2015]

@tgodzik I have test this fix on my laptap. It' works fine when run sbt clean coverage compile
the case is following

import org.scalajs.dom
import org.scalajs.dom.html
import scala.scalajs.js.annotation.JSExportTopLevel

@JSExportTopLevel("SimpleApp")
object SimpleApp:
  def main(args: Array[String]): Unit =
    dom.window.addEventListener("test", (_: dom.Event) => {
      val button = dom.document.createElement("button").asInstanceOf[html.Button]
      button.onclick = _ => println("Clicked")
    })

build.sbt

ThisBuild / scalaVersion := "3.8.1-RC1-bin-SNAPSHOT"

// this would fail
//ThisBuild / scalaVersion := "3.7.4"


// Use local ivy repository for the fixed Scala version
ThisBuild / resolvers += Resolver.mavenLocal
ThisBuild / resolvers += "Local Ivy" at s"file://${System.getProperty("user.home")}/.ivy2/local"

lazy val root = project.in(file("."))
  .enablePlugins(ScalaJSPlugin)
  .settings(
    name := "scalajs-coverage-test",
    scalaJSUseMainModuleInitializer := true,
    libraryDependencies += "org.scala-js" %%% "scalajs-dom" % "2.8.0"
  )

project/plugins.sbt

addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.4.1")
addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.20.1")