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module classes can sometimes extend scala.runtime.AbstractFuntionN in Scala 2 #24147

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Merged
merged 2 commits into from
Oct 8, 2025
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module classes can sometimes extend scala.runtime.AbstractFuntionN in Scala 2 #24147

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d7994ed
fix: alias `scalac` for `scala3-bootrapped-new` was malconfigured
hamzaremmal Oct 7, 2025
e7c79dc
fix: add `scala.runtime.AbstractFunction1` to parent of some module c…
hamzaremmal Oct 7, 2025
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3 changes: 3 additions & 0 deletions library/src/scala/UninitializedFieldError.scala
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Expand Up @@ -23,3 +23,6 @@ import scala.language.`2.13`
final case class UninitializedFieldError(msg: String) extends RuntimeException(msg) {
def this(obj: Any) = this("" + obj)
}

object UninitializedFieldError extends scala.runtime.AbstractFunction1[String, UninitializedFieldError]:
override def toString: String = "UninitializedFieldError"
3 changes: 3 additions & 0 deletions library/src/scala/collection/StringOps.scala
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Expand Up @@ -1651,3 +1651,6 @@ final case class StringView(s: String) extends AbstractIndexedSeqView[Char] {
def apply(n: Int) = s.charAt(n)
override def toString: String = s"StringView($s)"
}

object StringView extends scala.runtime.AbstractFunction1[String, StringView]:
override def toString: String = "StringView"
3 changes: 3 additions & 0 deletions library/src/scala/reflect/package.scala
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Expand Up @@ -76,3 +76,6 @@ package object reflect {

/** An exception that indicates an error during Scala reflection */
case class ScalaReflectionException(msg: String) extends Exception(msg)

object ScalaReflectionException extends scala.runtime.AbstractFunction1[String, ScalaReflectionException]:
override def toString: String = "ScalaReflectionException"
2 changes: 1 addition & 1 deletion project/Build.scala
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Expand Up @@ -1522,7 +1522,7 @@ object Build {
val wrappedArgs = if (printTasty) args else insertClasspathInArgs(args, extraClasspath.mkString(File.pathSeparator))
val fullArgs = main :: (defaultOutputDirectory ::: wrappedArgs).map("\""+ _ + "\"").map(_.replace("\\", "\\\\"))

(Compile / runMain).toTask(fullArgs.mkString(" ", " ", ""))
(`scala3-compiler-bootstrapped-new` / Compile / runMain).toTask(fullArgs.mkString(" ", " ", ""))
}.evaluated,
testCompilation := Def.inputTaskDyn {
val args = spaceDelimited("<arg>").parsed
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11 changes: 0 additions & 11 deletions project/MiMaFilters.scala
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Expand Up @@ -548,17 +548,6 @@ object MiMaFilters {
ProblemFilters.exclude[DirectMissingMethodProblem]("scala.runtime.Tuple3Zipped.coll2$extension"),
ProblemFilters.exclude[DirectMissingMethodProblem]("scala.runtime.Tuple3Zipped.coll3$extension"),

// singleton case classes modules inherit AbstractFunction1??
ProblemFilters.exclude[MissingTypesProblem]("scala.ScalaReflectionException$"),
ProblemFilters.exclude[DirectMissingMethodProblem]("scala.ScalaReflectionException.compose"),
ProblemFilters.exclude[DirectMissingMethodProblem]("scala.ScalaReflectionException.andThen"),
ProblemFilters.exclude[MissingTypesProblem]("scala.UninitializedFieldError$"),
ProblemFilters.exclude[DirectMissingMethodProblem]("scala.UninitializedFieldError.compose"),
ProblemFilters.exclude[DirectMissingMethodProblem]("scala.UninitializedFieldError.andThen"),
ProblemFilters.exclude[MissingTypesProblem]("scala.collection.StringView$"),
ProblemFilters.exclude[DirectMissingMethodProblem]("scala.collection.StringView.compose"),
ProblemFilters.exclude[DirectMissingMethodProblem]("scala.collection.StringView.andThen"),

// TO INVESTIGATE: This constructor changed, but it is private... why complaining?
ProblemFilters.exclude[IncompatibleMethTypeProblem]("scala.collection.immutable.LazyList.this"),
// This one should be fine, public class inside private object
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