AssertionError: assertion failed: orphan parameter reference: TypeParamRef(T) - when matching type
See original GitHub issueCompiler version
3.2.0-RC1
Minimized code
type Var[T]
type Set[T, D <: Var[T], V <: T]
type Get[S] = S match {
case Set[?, ?, v] => v
}
https://scastie.scala-lang.org/DswQvPTZTou8wqLq9zAXDw
Output (click arrow to expand)
java.lang.AssertionError: assertion failed: orphan parameter reference: TypeParamRef(T)
at scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType(TreePickler.scala:291)
at dotty.tools.dotc.core.tasty.TreePickler.pickleType(TreePickler.scala:160)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType$$anonfun$2$$anonfun$1(TreePickler.scala:181)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
java.lang.AssertionError: assertion failed: orphan parameter reference: TypeParamRef(T)
at scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType(TreePickler.scala:291)
at dotty.tools.dotc.core.tasty.TreePickler.pickleType(TreePickler.scala:160)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType$$anonfun$2$$anonfun$1(TreePickler.scala:181)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.immutable.List.foreach(List.scala:333)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType$$anonfun$2(TreePickler.scala:181)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType$$anonfun$adapted$2(TreePickler.scala:181)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType(TreePickler.scala:181)
at dotty.tools.dotc.core.tasty.TreePickler.pickleType(TreePickler.scala:160)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType$$anonfun$5(TreePickler.scala:258)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType$$anonfun$adapted$5(TreePickler.scala:260)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleNewType(TreePickler.scala:260)
at dotty.tools.dotc.core.tasty.TreePickler.pickleType(TreePickler.scala:160)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$20(TreePickler.scala:531)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$18(TreePickler.scala:534)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:534)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$32$$anonfun$1(TreePickler.scala:625)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.immutable.List.foreach(List.scala:333)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$32(TreePickler.scala:625)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$29(TreePickler.scala:625)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:625)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$13(TreePickler.scala:501)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$12(TreePickler.scala:501)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:501)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$33$$anonfun$1(TreePickler.scala:631)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.immutable.List.foreach(List.scala:333)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$33(TreePickler.scala:631)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$30(TreePickler.scala:632)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:632)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$35(TreePickler.scala:641)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$32(TreePickler.scala:641)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:641)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTpt(TreePickler.scala:318)
at dotty.tools.dotc.core.tasty.TreePickler.pickleDef$$anonfun$1(TreePickler.scala:336)
at dotty.tools.dotc.core.tasty.TreePickler.pickleDef$$anonfun$adapted$1(TreePickler.scala:340)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleDef(TreePickler.scala:340)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:567)
at dotty.tools.dotc.core.tasty.TreePickler.pickleStats$$anonfun$2(TreePickler.scala:365)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.immutable.List.foreach(List.scala:333)
at dotty.tools.dotc.core.tasty.TreePickler.pickleStats(TreePickler.scala:365)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$26(TreePickler.scala:591)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$24(TreePickler.scala:592)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:592)
at dotty.tools.dotc.core.tasty.TreePickler.pickleDef$$anonfun$1(TreePickler.scala:335)
at dotty.tools.dotc.core.tasty.TreePickler.pickleDef$$anonfun$adapted$1(TreePickler.scala:340)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleDef(TreePickler.scala:340)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:567)
at dotty.tools.dotc.core.tasty.TreePickler.pickleStats$$anonfun$2(TreePickler.scala:365)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.immutable.List.foreach(List.scala:333)
at dotty.tools.dotc.core.tasty.TreePickler.pickleStats(TreePickler.scala:365)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$29(TreePickler.scala:607)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$27(TreePickler.scala:607)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:58)
at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:607)
at dotty.tools.dotc.core.tasty.TreePickler.pickle$$anonfun$1(TreePickler.scala:779)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.immutable.List.foreach(List.scala:333)
at dotty.tools.dotc.core.tasty.TreePickler.pickle(TreePickler.scala:779)
at dotty.tools.dotc.transform.Pickler.run$$anonfun$1$$anonfun$1(Pickler.scala:72)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.immutable.List.foreach(List.scala:333)
at dotty.tools.dotc.transform.Pickler.run$$anonfun$1(Pickler.scala:110)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.immutable.List.foreach(List.scala:333)
at dotty.tools.dotc.transform.Pickler.run(Pickler.scala:110)
at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:311)
at scala.collection.immutable.List.map(List.scala:246)
at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:312)
at dotty.tools.dotc.transform.Pickler.runOn(Pickler.scala:115)
at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:234)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1328)
at dotty.tools.dotc.Run.runPhases$1(Run.scala:245)
at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:253)
at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:262)
at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:68)
at dotty.tools.dotc.Run.compileUnits(Run.scala:262)
at dotty.tools.dotc.Run.compileSources(Run.scala:186)
at dotty.tools.dotc.Run.compile(Run.scala:170)
at dotty.tools.dotc.Driver.doCompile(Driver.scala:35)
at dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:88)
at dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:192)
at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:247)
at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:182)
at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163)
at sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239)
at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163)
at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:210)
at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:528)
at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:528)
at sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:177)
at sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:175)
at sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:461)
at sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263)
at sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:416)
at sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:503)
at sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:403)
at sbt.internal.inc.Incremental$.apply(Incremental.scala:169)
at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:528)
at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:482)
at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:420)
at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2366)
at sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2316)
at sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:30)
at sbt.internal.io.Retry$.apply(Retry.scala:46)
at sbt.internal.io.Retry$.apply(Retry.scala:28)
at sbt.internal.io.Retry$.apply(Retry.scala:23)
at sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:30)
at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2314)
at scala.Function1.$anonfun$compose$1(Function1.scala:49)
at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
at sbt.std.Transform$$anon$4.work(Transform.scala:68)
at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
at sbt.Execute.work(Execute.scala:291)
at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:831)
Issue Analytics
- State:
- Created a year ago
- Comments:7 (4 by maintainers)
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Top GitHub Comments
How do we know it’s a regression? I am actually not sure this is a duplicate of #15595 after all.
@mwisnicki Try to convert all your
type
s toclass
es. Matching against types like that is bound to be full of surprises.