Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Crash when matching on Underlying type of a Type #17039

Closed
prolativ opened this issue Mar 3, 2023 · 0 comments · Fixed by #17048
Closed

Crash when matching on Underlying type of a Type #17039

prolativ opened this issue Mar 3, 2023 · 0 comments · Fixed by #17048
Assignees
@nicolasstucki
Labels
area:metaprogramming:quotes Issues related to quotes and splices itype:bug itype:crash
Milestone
3.3.1

Comments

@prolativ
Copy link
Contributor

prolativ commented Mar 3, 2023

Compiler version

3.3.1-RC1-bin-20230301-0df5ae2-NIGHTLY and before

Minimized code

import scala.quoted.*

def macroImpl(using Quotes) =
  val t = summon[Type[Int]]
  Type.of[Int] match
    case '[t.Underlying] => '{true}
    case _ => '{false}

Output (click arrow to expand)

scala.MatchError: TypeTree[ClassInfo(ThisType(TypeRef(NoPrefix,module class scala)), class Int, List(TypeRef(ThisType(TypeRef(NoPrefix,module class scala)),class AnyVal)))] (of class dotty.tools.dotc.ast.Trees$TypeTree) while running posttyper on Crash.scala
exception occurred while compiling Crash.scala
scala.MatchError: TypeTree[ClassInfo(ThisType(TypeRef(NoPrefix,module class scala)), class Int, List(TypeRef(ThisType(TypeRef(NoPrefix,module class scala)),class AnyVal)))] (of class dotty.tools.dotc.ast.Trees$TypeTree) while compilingCrash.scala
Exception in thread "main" scala.MatchError: TypeTree[ClassInfo(ThisType(TypeRef(NoPrefix,module class scala)), class Int, List(TypeRef(ThisType(TypeRef(NoPrefix,module class scala)),class AnyVal)))] (of class dotty.tools.dotc.ast.Trees$TypeTree)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:400)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.loop$2(tpd.scala:1238)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1238)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transformStats(PostTyper.scala:488)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformBlock(tpd.scala:1243)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1429)
        at dotty.tools.dotc.transform.MacroTransform$Transformer.transform(MacroTransform.scala:49)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:479)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform$$anonfun$1(Trees.scala:1510)
        at scala.collection.immutable.List.mapConserve(List.scala:472)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1510)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1417)
        at dotty.tools.dotc.transform.MacroTransform$Transformer.transform(MacroTransform.scala:49)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:353)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.app1$1(PostTyper.scala:318)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:331)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform$$anonfun$1(Trees.scala:1510)
        at scala.collection.immutable.List.mapConserve(List.scala:472)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1510)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:335)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1437)
        at dotty.tools.dotc.transform.MacroTransform$Transformer.transform(MacroTransform.scala:49)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:275)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform$$anonfun$1(Trees.scala:1510)
        at scala.collection.immutable.List.mapConserve(List.scala:472)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1510)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transformSub(Trees.scala:1514)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1435)
        at dotty.tools.dotc.transform.MacroTransform$Transformer.transform(MacroTransform.scala:49)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:479)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformBlock$$anonfun$1$$anonfun$1(tpd.scala:1243)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.loop$2(tpd.scala:1225)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1238)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transformStats(PostTyper.scala:488)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformBlock(tpd.scala:1243)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1429)
        at dotty.tools.dotc.transform.MacroTransform$Transformer.transform(MacroTransform.scala:49)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:479)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1481)
        at dotty.tools.dotc.transform.MacroTransform$Transformer.transform(MacroTransform.scala:40)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform$$anonfun$5(PostTyper.scala:381)
        at dotty.tools.dotc.transform.SuperAccessors.wrapDefDef(SuperAccessors.scala:223)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:381)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.loop$2(tpd.scala:1238)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1238)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transformStats(PostTyper.scala:488)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1240)
        at dotty.tools.dotc.transform.MacroTransform$Transformer.transform(MacroTransform.scala:47)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform$$anonfun$4$$anonfun$1(PostTyper.scala:366)
        at dotty.tools.dotc.transform.SuperAccessors.wrapTemplate(SuperAccessors.scala:208)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform$$anonfun$4(PostTyper.scala:366)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.withNoCheckNews(PostTyper.scala:105)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:368)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1483)
        at dotty.tools.dotc.transform.MacroTransform$Transformer.transform(MacroTransform.scala:40)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:418)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.loop$2(tpd.scala:1238)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1238)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transformStats(PostTyper.scala:488)
        at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1240)
        at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1491)
        at dotty.tools.dotc.transform.MacroTransform$Transformer.transform(MacroTransform.scala:40)
        at dotty.tools.dotc.transform.PostTyper$PostTyperTransformer.transform(PostTyper.scala:479)
        at dotty.tools.dotc.transform.MacroTransform.run(MacroTransform.scala:18)
        at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:324)
        at scala.collection.immutable.List.map(List.scala:246)
        at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:328)
        at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:247)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
        at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
        at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1321)
        at dotty.tools.dotc.Run.runPhases$1(Run.scala:263)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:271)
        at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:280)
        at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:67)
        at dotty.tools.dotc.Run.compileUnits(Run.scala:280)
        at dotty.tools.dotc.Run.compileSources(Run.scala:195)
        at dotty.tools.dotc.Run.compile(Run.scala:179)
        at dotty.tools.dotc.Driver.doCompile(Driver.scala:35)
        at dotty.tools.dotc.Driver.process(Driver.scala:195)
        at dotty.tools.dotc.Driver.process(Driver.scala:163)
        at dotty.tools.dotc.Driver.process(Driver.scala:175)
        at dotty.tools.dotc.Driver.main(Driver.scala:205)
        at dotty.tools.dotc.Main.main(Main.scala)

This might be related to #17037
@prolativ prolativ added itype:bug itype:crash area:metaprogramming:quotes Issues related to quotes and splices labels Mar 3, 2023
nicolasstucki added a commit to dotty-staging/dotty that referenced this issue Mar 6, 2023
@nicolasstucki
Fix splice type variable pattern detection
0a1ceb9 
Fixes scala#17039
@nicolasstucki nicolasstucki mentioned this issue Mar 6, 2023
Merged
nicolasstucki added a commit that referenced this issue Mar 21, 2023
@nicolasstucki
Fix splice type variable pattern detection (#17048)
09a73dc 
Fixes #17039
Dedelweiss pushed a commit to Dedelweiss/dotty that referenced this issue Apr 17, 2023
@nicolasstucki @Dedelweiss
Fix splice type variable pattern detection
b92bddd 
Fixes scala#17039
@Kordyjan Kordyjan added this to the 3.3.1 milestone Aug 1, 2023
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@nicolasstucki nicolasstucki

Labels
area:metaprogramming:quotes Issues related to quotes and splices itype:bug itype:crash
Projects
None yet
Milestone
3.3.1
Development

Successfully merging a pull request may close this issue.

Fix splice type variable pattern detection dotty-staging/dotty
3 participants
@nicolasstucki @prolativ @Kordyjan