Regression: crash of JVM backend in kuceramartin/tyqu

[WojciechMazur]

Compiler version

Fails in 3.3.0 (stacktrace below)
Fails in 3.3.2-RC1-bin-20230707-7ede150-NIGHTLY with different error message
Works in 3.2.2

Minimized code

Not yet minimized, based on compilation of OSS project: https://github.com/kuceramartin/tyqu.git

Output (click arrow to expand)

dotty.tools.dotc.core.Denotations$StaleSymbol: stale symbol; method columnsWithNames$lzyINIT1#52597 in class Table, defined in Period(77..94, run = 2), is referred to in run Period(93..93, run = 3)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.staleSymbolError(Denotations.scala:952)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.bringForward(Denotations.scala:756)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.toNewRun$1(Denotations.scala:803)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:874)
	at dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:122)
	at dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:116)
	at dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:109)
	at dotty.tools.dotc.core.Symbols$Symbol.name(Symbols.scala:262)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames$$anonfun$2(SymDenotations.scala:2358)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:575)
	at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:573)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1300)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames(SymDenotations.scala:2358)
	at dotty.tools.dotc.core.SymDenotations$MemberNamesImpl.apply(SymDenotations.scala:2943)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.memberNames(SymDenotations.scala:2340)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames$$anonfun$1(SymDenotations.scala:2350)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.immutable.List.foreach(List.scala:333)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames(SymDenotations.scala:2351)
	at dotty.tools.dotc.core.SymDenotations$MemberNamesImpl.apply(SymDenotations.scala:2943)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.memberNames(SymDenotations.scala:2340)
	at dotty.tools.dotc.core.Types$Type.memberNames(Types.scala:934)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.sortedMembersBasedOnFlags(BCodeHelpers.scala:[520](https://github.com/VirtusLab/community-build3/actions/runs/5489142048/jobs/10007265342#step:6:521))
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.addForwarders(BCodeHelpers.scala:489)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.addForwarders$(BCodeHelpers.scala:406)
	at dotty.tools.backend.jvm.BCodeHelpers$JCommonBuilder.addForwarders(BCodeHelpers.scala:570)
	at dotty.tools.backend.jvm.BCodeHelpers$JMirrorBuilder.genMirrorClass(BCodeHelpers.scala:617)
	at dotty.tools.backend.jvm.CodeGen.genMirrorClass(CodeGen.scala:145)
	at dotty.tools.backend.jvm.CodeGen.genClassDef$1(CodeGen.scala:61)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:101)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1$$anonfun$1(CodeGen.scala:99)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.immutable.List.foreach(List.scala:333)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:99)
	at dotty.tools.backend.jvm.CodeGen.genUnit(CodeGen.scala:104)
	at dotty.tools.backend.jvm.GenBCode.run(GenBCode.scala:76)
	at dotty.tools.dotc.core.Phases$Phase.runOn$$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.backend.jvm.GenBCode.runOn(GenBCode.scala:87)
	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$$anonfun$adapted$1(Run.scala:279)
	at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:67)
	at dotty.tools.dotc.Run.compileUnits(Run.scala:279)
	at dotty.tools.dotc.Run.compileUnits(Run.scala:200)
	at dotty.tools.dotc.Driver.finish(Driver.scala:58)
	at dotty.tools.dotc.Driver.doCompile(Driver.scala:38)
	at dotty.tools.dotc.Driver.process(Driver.scala:197)
	at dotty.tools.dotc.Driver.process(Driver.scala:165)
	at dotty.tools.dotc.Driver.process(Driver.scala:177)
	at dotty.tools.dotc.Driver.main(Driver.scala:207)
	at dotty.tools.dotc.Main.main(Main.scala)
Error while emitting /build/repo/src/demo/Demo.scala
stale symbol; method columnsWithNames$lzyINIT1#52597 in class Table, defined in Period(77..94, run = 2), is referred to in run Period(93..93, run = 3)
dotty.tools.dotc.core.Denotations$StaleSymbol: stale symbol; method columns$lzyINIT1#52605 in class Table, defined in Period(77..94, run = 2), is referred to in run Period(93..93, run = 3)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.staleSymbolError(Denotations.scala:952)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.bringForward(Denotations.scala:756)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.toNewRun$1(Denotations.scala:803)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:874)
	at dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:122)
	at dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:116)
	at dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:109)
	at dotty.tools.dotc.core.Symbols$Symbol.name(Symbols.scala:262)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames$$anonfun$2(SymDenotations.scala:2358)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:575)
	at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:573)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1300)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames(SymDenotations.scala:2358)
	at dotty.tools.dotc.core.SymDenotations$MemberNamesImpl.apply(SymDenotations.scala:2943)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.memberNames(SymDenotations.scala:2340)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames$$anonfun$1(SymDenotations.scala:2350)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.immutable.List.foreach(List.scala:333)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames(SymDenotations.scala:2351)
	at dotty.tools.dotc.core.SymDenotations$MemberNamesImpl.apply(SymDenotations.scala:2943)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.memberNames(SymDenotations.scala:2340)
	at dotty.tools.dotc.core.Types$Type.memberNames(Types.scala:934)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.sortedMembersBasedOnFlags(BCodeHelpers.scala:520)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.addForwarders(BCodeHelpers.scala:489)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.addForwarders$(BCodeHelpers.scala:406)
	at dotty.tools.backend.jvm.BCodeHelpers$JCommonBuilder.addForwarders(BCodeHelpers.scala:570)
	at dotty.tools.backend.jvm.BCodeHelpers$JMirrorBuilder.genMirrorClass(BCodeHelpers.scala:617)
	at dotty.tools.backend.jvm.CodeGen.genMirrorClass(CodeGen.scala:145)
	at dotty.tools.backend.jvm.CodeGen.genClassDef$1(CodeGen.scala:61)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:101)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1$$anonfun$1(CodeGen.scala:99)
	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.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:99)
	at dotty.tools.backend.jvm.CodeGen.genUnit(CodeGen.scala:104)
	at dotty.tools.backend.jvm.GenBCode.run(GenBCode.scala:76)
	at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:327)
	at scala.collection.immutable.List.map(List.scala:246)
	at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:331)
	at dotty.tools.backend.jvm.GenBCode.runOn(GenBCode.scala:87)
	at dotty.tools.dotc.Run.runPhases$1$$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.compileUnits(Run.scala:200)
	at dotty.tools.dotc.Driver.finish(Driver.scala:58)
	at dotty.tools.dotc.Driver.doCompile(Driver.scala:38)
	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.dotc.Main.main(Main.scala)
Error while emitting /build/repo/src/demo/Demo.scala
stale symbol; method columns$lzyINIT1#[526](https://github.com/VirtusLab/community-build3/actions/runs/5489142048/jobs/10007265342#step:6:527)05 in class Table, defined in Period(77..94, run = 2), is referred to in run Period(93..93, run = 3)
dotty.tools.dotc.core.Denotations$StaleSymbol: stale symbol; method colToName$lzyINIT1#52613 in class Table, defined in Period(77..94, run = 2), is referred to in run Period(93..93, run = 3)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.staleSymbolError(Denotations.scala:952)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.bringForward(Denotations.scala:756)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.toNewRun$1(Denotations.scala:803)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:874)
	at dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:122)
	at dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:116)
	at dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:109)
	at dotty.tools.dotc.core.Symbols$Symbol.name(Symbols.scala:262)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames$$anonfun$2(SymDenotations.scala:2358)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:575)
	at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:573)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1300)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames(SymDenotations.scala:2358)
	at dotty.tools.dotc.core.SymDenotations$MemberNamesImpl.apply(SymDenotations.scala:2943)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.memberNames(SymDenotations.scala:2340)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames$$anonfun$1(SymDenotations.scala:2350)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.immutable.List.foreach(List.scala:333)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames(SymDenotations.scala:2351)
	at dotty.tools.dotc.core.SymDenotations$MemberNamesImpl.apply(SymDenotations.scala:2943)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.memberNames(SymDenotations.scala:2340)
	at dotty.tools.dotc.core.Types$Type.memberNames(Types.scala:934)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.sortedMembersBasedOnFlags(BCodeHelpers.scala:520)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.addForwarders(BCodeHelpers.scala:489)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.addForwarders$(BCodeHelpers.scala:406)
	at dotty.tools.backend.jvm.BCodeHelpers$JCommonBuilder.addForwarders(BCodeHelpers.scala:570)
	at dotty.tools.backend.jvm.BCodeHelpers$JMirrorBuilder.genMirrorClass(BCodeHelpers.scala:617)
	at dotty.tools.backend.jvm.CodeGen.genMirrorClass(CodeGen.scala:145)
	at dotty.tools.backend.jvm.CodeGen.genClassDef$1(CodeGen.scala:61)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:101)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1$$anonfun$1(CodeGen.scala:99)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.immutable.List.foreach(List.scala:333)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:99)
	at dotty.tools.backend.jvm.CodeGen.genUnit(CodeGen.scala:104)
	at dotty.tools.backend.jvm.GenBCode.run(GenBCode.scala:76)
	at dotty.tools.dotc.core.Phases$Phase.runOn$$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.backend.jvm.GenBCode.runOn(GenBCode.scala:87)
	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$$anonfun$adapted$1(Run.scala:279)
	at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:67)
	at dotty.tools.dotc.Run.compileUnits(Run.scala:279)
	at dotty.tools.dotc.Run.compileUnits(Run.scala:200)
	at dotty.tools.dotc.Driver.finish(Driver.scala:58)
	at dotty.tools.dotc.Driver.doCompile(Driver.scala:38)
	at dotty.tools.dotc.Driver.process(Driver.scala:197)
	at dotty.tools.dotc.Driver.process(Driver.scala:165)
	at dotty.tools.dotc.Driver.process(Driver.scala:177)
	at dotty.tools.dotc.Driver.main(Driver.scala:207)
	at dotty.tools.dotc.Main.main(Main.scala)
Error while emitting /build/repo/src/demo/Demo.scala
stale symbol; method colToName$lzyINIT1#52613 in class Table, defined in Period(77..94, run = 2), is referred to in run Period(93..93, run = 3)
dotty.tools.dotc.core.Denotations$StaleSymbol: stale symbol; method colToExpr$lzyINIT1#52621 in class Table, defined in Period(77..94, run = 2), is referred to in run Period(93..93, run = 3)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.staleSymbolError(Denotations.scala:952)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.bringForward(Denotations.scala:756)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.toNewRun$1(Denotations.scala:803)
	at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:874)
	at dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:122)
	at dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:116)
	at dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:109)
	at dotty.tools.dotc.core.Symbols$Symbol.name(Symbols.scala:262)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames$$anonfun$2(SymDenotations.scala:2358)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:575)
	at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:573)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1300)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames(SymDenotations.scala:2358)
	at dotty.tools.dotc.core.SymDenotations$MemberNamesImpl.apply(SymDenotations.scala:2943)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.memberNames(SymDenotations.scala:2340)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames$$anonfun$1(SymDenotations.scala:2350)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.immutable.List.foreach(List.scala:333)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.computeMemberNames(SymDenotations.scala:2351)
	at dotty.tools.dotc.core.SymDenotations$MemberNamesImpl.apply(SymDenotations.scala:2943)
	at dotty.tools.dotc.core.SymDenotations$ClassDenotation.memberNames(SymDenotations.scala:2340)
	at dotty.tools.dotc.core.Types$Type.memberNames(Types.scala:934)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.sortedMembersBasedOnFlags(BCodeHelpers.scala:520)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.addForwarders(BCodeHelpers.scala:489)
	at dotty.tools.backend.jvm.BCodeHelpers$BCForwardersGen.addForwarders$(BCodeHelpers.scala:406)
	at dotty.tools.backend.jvm.BCodeHelpers$JCommonBuilder.addForwarders(BCodeHelpers.scala:[570](https://github.com/VirtusLab/community-build3/actions/runs/5489142048/jobs/10007265342#step:6:571))
	at dotty.tools.backend.jvm.BCodeHelpers$JMirrorBuilder.genMirrorClass(BCodeHelpers.scala:617)
	at dotty.tools.backend.jvm.CodeGen.genMirrorClass(CodeGen.scala:145)
	at dotty.tools.backend.jvm.CodeGen.genClassDef$1(CodeGen.scala:61)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:101)
	at dotty.tools.backend.jvm.CodeGen.genClassDefs$1$$anonfun$1(CodeGen.scala:99)
	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.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:99)
	at dotty.tools.backend.jvm.CodeGen.genUnit(CodeGen.scala:104)
	at dotty.tools.backend.jvm.GenBCode.run(GenBCode.scala:76)
	at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:327)
	at scala.collection.immutable.List.map(List.scala:246)
	at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:331)
	at dotty.tools.backend.jvm.GenBCode.runOn(GenBCode.scala:87)
	at dotty.tools.dotc.Run.runPhases$1$$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.compileUnits(Run.scala:200)
	at dotty.tools.dotc.Driver.finish(Driver.scala:58)
	at dotty.tools.dotc.Driver.doCompile(Driver.scala:38)
	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.dotc.Main.main(Main.scala)
Error while emitting /build/repo/src/demo/Demo.scala
stale symbol; method colToExpr$lzyINIT1#52[621](https://github.com/VirtusLab/community-build3/actions/runs/5489142048/jobs/10007265342#step:6:622) in class Table, defined in Period(77..94, run = 2), is referred to in run Period(93..93, run = 3)

[soronpo]

Did you check the 3.3.2 nightly after #18077 was merged? It handles a stale symbol error like this.

[WojciechMazur]

Did you check the 3.3.2 nightly after #18077 was merged? It handles a stale symbol error like this.

Yes, it still fails in latest nightly: 3.3.2-RC1-bin-20230710-ed319e8-NIGHTLY

[mbovel]

@KuceraMartin, we will actually have a spree on August 1st. Would you like to look into this issue then?

[WojciechMazur]

The crash happens when compiling this test: https://github.com/KuceraMartin/tyqu/blob/c1747edc67ae69cfecd5c5f2ee00c5dc7643e158/src/test/translators/GenericSqlTranslatorTest.scala#L324-L335

It can be simplified to:

  case object MyTable extends Table:
    val id = Column[Int]()
    val firstName = Column[String]()
    val lastName = Column[String]()
    val age = Column[Int | Null]()

  val translator = new GenericSqlTranslator(MySqlPlatform)
  val query = translator.translate(
    from(MyTable).map { t =>
        (t.id - t.age.getOrElse(0) * t.id)
      }
    )

From what I've observed it fails when we reference at least 2 different columns, and use one of them at least twice

[KuceraMartin]

@mbovel I’d be happy to work on it during the next spree but I’m away and with poor internet connection so I haven’t been able to register. Is it fine if I just join the zoom call without signing up?

[KuceraMartin]

The problem appears starting from this commit: KuceraMartin/tyqu@2cc26d5

It also doesn't compile with Scala 3.2.0. (that is an issue we knew of but did not investigate because it was working again in 3.2.2., see https://lampepfl.slack.com/archives/C0L95M1J8/p1674819778873259)