NoDenotation.owner while running MegaPhase during compile with coverage

[tchlr]

Hi,

during an scala update to 3.3.0 in my project I noticed an exception during compilation with coverage support.
I tried to minimize the problem as far as possible. With version 3.2.2 or without the -coverage-out argument the code compiles without any problems.

Compiler version

Scala compiler version 3.3.0 -- Copyright 2002-2023, LAMP/EPFL

Minimized code

class TestClass(i: Int) {
  def this(str: String) = this(str.toInt)
}

run with

scalac -coverage-out:. TestClass.scala 

Output

java.lang.AssertionError: NoDenotation.owner while running MegaPhase{crossVersionChecks, protectedAccessors, extmethods, uncacheGivenAliases, elimByName, hoistSuperArgs, forwardDepChecks, specializeApplyMethods, tryCatchPatterns, patternMatcher} on TestClass.scala
exception occurred while compiling TestClass.scala
java.lang.AssertionError: NoDenotation.owner while compiling TestClass.scala
Exception in thread "main" java.lang.AssertionError: NoDenotation.owner
	at dotty.tools.dotc.core.SymDenotations$NoDenotation$.owner(SymDenotations.scala:2576)
	at dotty.tools.dotc.transform.HoistSuperArgs$Hoister.hoistSuperArgsFromCall(HoistSuperArgs.scala:185)
	at dotty.tools.dotc.transform.HoistSuperArgs$Hoister.hoistSuperArgsFromConstr(HoistSuperArgs.scala:218)
	at dotty.tools.dotc.transform.HoistSuperArgs.$anonfun$7(HoistSuperArgs.scala:230)
	at dotty.tools.dotc.core.Decorators$.loop$1(Decorators.scala:94)
	at dotty.tools.dotc.core.Decorators$.mapconserve(Decorators.scala:110)
	at dotty.tools.dotc.transform.HoistSuperArgs.transformTypeDef(HoistSuperArgs.scala:230)
	at dotty.tools.dotc.transform.MegaPhase.goTypeDef(MegaPhase.scala:995)
	at dotty.tools.dotc.transform.MegaPhase.goTypeDef(MegaPhase.scala:996)
	at dotty.tools.dotc.transform.MegaPhase.transformNamed$1(MegaPhase.scala:256)
	at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:425)
	at dotty.tools.dotc.transform.MegaPhase.loop$1(MegaPhase.scala:438)
	at dotty.tools.dotc.transform.MegaPhase.transformStats(MegaPhase.scala:438)
	at dotty.tools.dotc.transform.MegaPhase.mapPackage$1(MegaPhase.scala:379)
	at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:382)
	at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:427)
	at dotty.tools.dotc.transform.MegaPhase.transformUnit(MegaPhase.scala:454)
	at dotty.tools.dotc.transform.MegaPhase.run(MegaPhase.scala:466)
	at dotty.tools.dotc.core.Phases$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.MainGenericCompiler$.run$1(MainGenericCompiler.scala:162)
	at dotty.tools.MainGenericCompiler$.main(MainGenericCompiler.scala:186)
	at dotty.tools.MainGenericCompiler.main(MainGenericCompiler.scala)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at coursier.bootstrap.launcher.a.a(Unknown Source)
	at coursier.bootstrap.launcher.Launcher.main(Unknown Source)

[TheElectronWill]

Thank you for reporting! This looks like a duplicate of #17625

[reid-spencer]

I just closed #17625 because 3.3.1-RC1 fixes the issue for me. It is likely fixed here, too, because this issue has the same symptom.