Closed
Description
Compiler version
Latest version, git commit 51d69e85e1f7c31459b57fe747a6d2ae7d1d3ab7, but the same problem exists in 3.0.0
Minimized code
object Extract {
transparent inline def unapply(value: String): Option[Tuple] = Some((1, "two"))
}
def fail(): Unit = "" match { case Extract(a, b) => }Output (click arrow to expand)
unhandled exception while running MegaPhase{protectedAccessors, extmethods, uncacheGivenAliases, elimByName, hoistSuperArgs, forwardDepChecks, specializeApplyMethods, tryCatchPatterns, patternMatcher} on extractor.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-RC1-bin-SNAPSHOT-git-51d69e8
settings:
tree: EmptyTree
tree position: :<unknown>
tree type: <notype>
symbol: val <none>
call site: �[33mpackage�[0m �[35m<root>�[0m in module class <root>
== Source file context for tree position ==
Exception in thread "main" scala.MatchError: List() (of class scala.collection.immutable.Nil$)
at dotty.tools.dotc.transform.PatternMatcher$Translator.matchArgsPatternPlan$1(PatternMatcher.scala:267)
at dotty.tools.dotc.transform.PatternMatcher$Translator.matchArgsComponentsPlan$1(PatternMatcher.scala:262)
at dotty.tools.dotc.transform.PatternMatcher$Translator.matchArgsPlan$1(PatternMatcher.scala:273)
at dotty.tools.dotc.transform.PatternMatcher$Translator.$anonfun$12(PatternMatcher.scala:381)
at dotty.tools.dotc.transform.PatternMatcher$Translator.letAbstract(PatternMatcher.scala:114)
at dotty.tools.dotc.transform.PatternMatcher$Translator.unapplyPlan$1$$anonfun$1(PatternMatcher.scala:381)
at dotty.tools.dotc.transform.PatternMatcher$Translator.letAbstract(PatternMatcher.scala:114)
at dotty.tools.dotc.transform.PatternMatcher$Translator.unapplyPlan$1(PatternMatcher.scala:385)
at dotty.tools.dotc.transform.PatternMatcher$Translator.patternPlan(PatternMatcher.scala:422)
at dotty.tools.dotc.transform.PatternMatcher$Translator.caseDefPlan(PatternMatcher.scala:458)
at dotty.tools.dotc.transform.PatternMatcher$Translator.matchPlan$$anonfun$1$$anonfun$1(PatternMatcher.scala:465)
at scala.collection.immutable.List.foldRight(List.scala:352)
at dotty.tools.dotc.transform.PatternMatcher$Translator.matchPlan$$anonfun$1(PatternMatcher.scala:465)
at dotty.tools.dotc.transform.PatternMatcher$Translator.letAbstract(PatternMatcher.scala:114)
at dotty.tools.dotc.transform.PatternMatcher$Translator.matchPlan(PatternMatcher.scala:466)
at dotty.tools.dotc.transform.PatternMatcher$Translator.translateMatch(PatternMatcher.scala:1052)
at dotty.tools.dotc.transform.PatternMatcher.transformMatch(PatternMatcher.scala:48)
at dotty.tools.dotc.transform.MegaPhase.goMatch(MegaPhase.scala:804)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:371)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:442)
at dotty.tools.dotc.transform.MegaPhase.mapDefDef$1(MegaPhase.scala:253)
at dotty.tools.dotc.transform.MegaPhase.transformNamed$1(MegaPhase.scala:256)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:440)
at dotty.tools.dotc.transform.MegaPhase.loop$1(MegaPhase.scala:453)
at dotty.tools.dotc.transform.MegaPhase.transformStats(MegaPhase.scala:453)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:364)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:442)
at dotty.tools.dotc.transform.MegaPhase.transformNamed$1(MegaPhase.scala:260)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:440)
at dotty.tools.dotc.transform.MegaPhase.loop$1(MegaPhase.scala:453)
at dotty.tools.dotc.transform.MegaPhase.transformStats(MegaPhase.scala:453)
at dotty.tools.dotc.transform.MegaPhase.mapPackage$1(MegaPhase.scala:384)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:387)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:442)
at dotty.tools.dotc.transform.MegaPhase.transformUnit(MegaPhase.scala:469)
at dotty.tools.dotc.transform.MegaPhase.run(MegaPhase.scala:481)
at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:327)
at scala.collection.immutable.List.map(List.scala:246)
at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:331)
at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:246)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1321)
at dotty.tools.dotc.Run.runPhases$1(Run.scala:262)
at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:270)
at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:279)
at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:67)
at dotty.tools.dotc.Run.compileUnits(Run.scala:279)
at dotty.tools.dotc.Run.compileSources(Run.scala:194)
at dotty.tools.dotc.Run.compile(Run.scala:179)
at dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
at dotty.tools.dotc.Driver.process(Driver.scala:197)
at dotty.tools.dotc.Driver.process(Driver.scala:165)
at dotty.tools.dotc.Driver.process(Driver.scala:177)
at dotty.tools.dotc.Driver.main(Driver.scala:207)
at dotty.tools.MainGenericCompiler$.run$1(MainGenericCompiler.scala:162)
at dotty.tools.MainGenericCompiler$.main(MainGenericCompiler.scala:186)
at dotty.tools.MainGenericCompiler.main(MainGenericCompiler.scala)