Regression in softwaremill/tapir - StaleSymbolException when compiling macros #21352
Description
Compiler version
3.nightly, available in current main, but not in 3.6.0-RC1-bin-20240807-54344a1-NIGHTLY (last available, last night build failed)
Caused by 8a41389 introduced in #21339, reverted during backport to 3.5.0
Unhandled exception is thrown during inlining or when using -Yforce-sbt-phases in sbt-api
Minimized code
// schema.scala
//> using options -source:3.5
case class Schema[T](format: String):
def asOption: Schema[Option[T]] = ???
def name(name: Option[SName]): Schema[T] = ???
def format(f: String): Schema[T] = ???
object Schema extends SchemaCompanionMacros:
implicit def schemaForOption[T: Schema]: Schema[Option[T]] =
implicitly[Schema[T]]
???
trait SchemaCompanionMacros extends SchemaDerivation:
given derivedStringBasedUnionEnumeration[S](using IsUnionOf[String, S]): Schema[S] =
val x: Schema[S] = ???
x.name(None)
@main def Test =
case class Foo(x: Int) derives Schema// schemaDerivation.scala
import scala.deriving.*
import scala.quoted.*
trait SName
abstract class CaseClass[Typeclass[_], Type]:
def param: CaseClass.Param[Typeclass, Type]
object CaseClass:
trait Param[Typeclass[_], Type]:
type PType
def typeclass: Typeclass[PType]
sealed trait IsUnionOf[T, A]
object IsUnionOf:
transparent inline given derived[T, A]: IsUnionOf[T, A] = ${ deriveImpl[T, A] }
private def deriveImpl[T, A](using quotes: Quotes): Expr[IsUnionOf[T, A]] = ???
trait SchemaDerivation:
inline implicit def derived[T](implicit m: Mirror.Of[T]): Schema[T] =
val ctx: CaseClass[Schema, T] = ???
val valueSchema = ctx.param.typeclass
val format = valueSchema.format
???
Output (click arrow to expand)
unhandled exception while running inlining on /Users/wmazur/projects/sandbox/src/main/scala/schema.scala
An unhandled exception was thrown in the compiler.
Please file a crash report here:
https://github.com/scala/scala3/issues/new/choose
For non-enriched exceptions, compile with -Xno-enrich-error-messages.
while compiling: /Users/wmazur/projects/sandbox/src/main/scala/schema.scala
during phase: inlining
mode: Mode(ImplicitsEnabled)
library version: version 2.13.14
compiler version: version 3.5.0-RC6-bin-73c6e88-SNAPSHOT-git-73c6e88
settings: -classpath /Users/wmazur/Library/Caches/Coursier/v1/https/scala3.westeurope.cloudapp.azure.com/maven2/3.5.0-RC6-bin-73c6e88-SNAPSHOT/org/scala-lang/scala3-library_3/3.5.0-RC6-bin-73c6e88-SNAPSHOT/scala3-library_3-3.5.0-RC6-bin-73c6e88-SNAPSHOT.jar:/Users/wmazur/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.14/scala-library-2.13.14.jar -d /Users/wmazur/projects/sandbox/src/.scala-build/src_851f5ccd4f/classes/main -java-output-version 17 -sourceroot /Users/wmazur/projects/sandbox/src
Exception while compiling /Users/wmazur/projects/sandbox/src/main/scala/schema.scala, /Users/wmazur/projects/sandbox/src/main/scala/schemaDerivation.scala
An unhandled exception was thrown in the compiler.
Please file a crash report here:
https://github.com/scala/scala3/issues/new/choose
For non-enriched exceptions, compile with -Xno-enrich-error-messages.
while compiling: <no file>
during phase: parser
mode: Mode()
library version: version 2.13.14
compiler version: version 3.5.0-RC6-bin-73c6e88-SNAPSHOT-git-73c6e88
settings: -classpath /Users/wmazur/Library/Caches/Coursier/v1/https/scala3.westeurope.cloudapp.azure.com/maven2/3.5.0-RC6-bin-73c6e88-SNAPSHOT/org/scala-lang/scala3-library_3/3.5.0-RC6-bin-73c6e88-SNAPSHOT/scala3-library_3-3.5.0-RC6-bin-73c6e88-SNAPSHOT.jar:/Users/wmazur/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.14/scala-library-2.13.14.jar -d /Users/wmazur/projects/sandbox/src/.scala-build/src_851f5ccd4f/classes/main -java-output-version 17 -sourceroot /Users/wmazur/projects/sandbox/src
Exception in thread "main" dotty.tools.dotc.core.Denotations$StaleSymbolException: stale symbol; val format#4134 in class Schema, defined in Period(2.1-53), is referred to in run Period(3.12)
at dotty.tools.dotc.core.Denotations$SingleDenotation.staleSymbolError(Denotations.scala:961)
at dotty.tools.dotc.core.Denotations$SingleDenotation.bringForward(Denotations.scala:759)
at dotty.tools.dotc.core.Denotations$SingleDenotation.toNewRun$1(Denotations.scala:806)
at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:877)
at dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:124)
at dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:118)
at dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:109)
at dotty.tools.dotc.core.Symbols$.toDenot(Symbols.scala:544)
at dotty.tools.dotc.core.SourceLanguage$.apply(TypeErasure.scala:27)
at dotty.tools.dotc.core.Denotations$SingleDenotation.signature(Denotations.scala:613)
at dotty.tools.dotc.core.Types$NamedType.sigFromDenot(Types.scala:2435)
at dotty.tools.dotc.core.Types$NamedType.currentSignature(Types.scala:2426)
at dotty.tools.dotc.core.Types$NamedType.disambiguate(Types.scala:2552)
at dotty.tools.dotc.core.Types$NamedType.memberDenot(Types.scala:2575)
at dotty.tools.dotc.core.Types$NamedType.computeDenot(Types.scala:2543)
at dotty.tools.dotc.core.Types$NamedType.denot(Types.scala:2502)
at dotty.tools.dotc.core.Types$NamedType.computeSymbol(Types.scala:2449)
at dotty.tools.dotc.core.Types$NamedType.symbol(Types.scala:2444)
at dotty.tools.dotc.core.Types$Type.termSymbol(Types.scala:665)
at dotty.tools.dotc.inlines.Inliner$$anon$4.apply(Inliner.scala:569)
at dotty.tools.dotc.inlines.Inliner$$anon$4.apply(Inliner.scala:565)
at dotty.tools.dotc.ast.TreeTypeMap.mapType(TreeTypeMap.scala:72)
at dotty.tools.dotc.ast.TreeTypeMap.transform(TreeTypeMap.scala:105)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1597)
at dotty.tools.dotc.ast.TreeTypeMap.transform(TreeTypeMap.scala:151)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform$$anonfun$1(Trees.scala:1640)
at scala.collection.immutable.List.mapConserve(List.scala:473)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1640)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transformSub(Trees.scala:1644)
at dotty.tools.dotc.ast.TreeTypeMap.transformDefs(TreeTypeMap.scala:160)
at dotty.tools.dotc.ast.TreeTypeMap.transform(TreeTypeMap.scala:120)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1542)
at dotty.tools.dotc.ast.TreeTypeMap.transform(TreeTypeMap.scala:151)
at dotty.tools.dotc.inlines.Inliner.inlined(Inliner.scala:623)
at dotty.tools.dotc.inlines.Inlines$InlineCall.expand(Inlines.scala:491)
at dotty.tools.dotc.inlines.Inlines$.inlineCall(Inlines.scala:163)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transform(Inlining.scala:100)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1597)
at dotty.tools.dotc.ast.TreeMapWithImplicits.transform(TreeMapWithImplicits.scala:67)
at dotty.tools.dotc.ast.TreeMapWithTrackedStats.transform(TreeMapWithTrackedStats.scala:63)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transformMemberDef(Inlining.scala:141)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transform(Inlining.scala:77)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.loop$2(tpd.scala:1240)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1240)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1242)
at dotty.tools.dotc.ast.TreeMapWithImplicits.transform(TreeMapWithImplicits.scala:58)
at dotty.tools.dotc.ast.TreeMapWithTrackedStats.transform(TreeMapWithTrackedStats.scala:63)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transform(Inlining.scala:101)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1602)
at dotty.tools.dotc.ast.TreeMapWithImplicits.transform(TreeMapWithImplicits.scala:67)
at dotty.tools.dotc.ast.TreeMapWithTrackedStats.transform(TreeMapWithTrackedStats.scala:60)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transformMemberDef(Inlining.scala:141)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transform(Inlining.scala:77)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.loop$2(tpd.scala:1240)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1240)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformBlock(tpd.scala:1245)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1548)
at dotty.tools.dotc.ast.TreeMapWithImplicits.transform(TreeMapWithImplicits.scala:43)
at dotty.tools.dotc.ast.TreeMapWithTrackedStats.transform(TreeMapWithTrackedStats.scala:54)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transform(Inlining.scala:79)
at dotty.tools.dotc.ast.TreeMapWithImplicits.transform(TreeMapWithImplicits.scala:50)
at dotty.tools.dotc.ast.TreeMapWithTrackedStats.transform(TreeMapWithTrackedStats.scala:63)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transformMemberDef(Inlining.scala:141)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transform(Inlining.scala:77)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.loop$2(tpd.scala:1240)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1240)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1242)
at dotty.tools.dotc.ast.TreeMapWithImplicits.transform(TreeMapWithImplicits.scala:58)
at dotty.tools.dotc.ast.TreeMapWithTrackedStats.transform(TreeMapWithTrackedStats.scala:63)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transform(Inlining.scala:101)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1602)
at dotty.tools.dotc.ast.TreeMapWithImplicits.transform(TreeMapWithImplicits.scala:67)
at dotty.tools.dotc.ast.TreeMapWithTrackedStats.transform(TreeMapWithTrackedStats.scala:60)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transformMemberDef(Inlining.scala:141)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transform(Inlining.scala:77)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.loop$2(tpd.scala:1240)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1240)
at dotty.tools.dotc.ast.tpd$TreeMapWithPreciseStatContexts.transformStats(tpd.scala:1242)
at dotty.tools.dotc.ast.Trees$Instance$TreeMap.transform(Trees.scala:1613)
at dotty.tools.dotc.ast.TreeMapWithImplicits.transform(TreeMapWithImplicits.scala:67)
at dotty.tools.dotc.ast.TreeMapWithTrackedStats.transform(TreeMapWithTrackedStats.scala:48)
at dotty.tools.dotc.transform.Inlining$InliningTreeMap.transform(Inlining.scala:81)
at dotty.tools.dotc.transform.Inlining$$anon$2.transform(Inlining.scala:63)
at dotty.tools.dotc.transform.MacroTransform.run(MacroTransform.scala:20)
at dotty.tools.dotc.transform.Inlining.run(Inlining.scala:39)
at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:380)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.immutable.List.foreach(List.scala:334)
at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:373)
at dotty.tools.dotc.transform.Inlining.runOn(Inlining.scala:43)
at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:343)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323)
at dotty.tools.dotc.Run.runPhases$1(Run.scala:336)
at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:384)
at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:396)
at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
at dotty.tools.dotc.Run.compileUnits(Run.scala:396)
at dotty.tools.dotc.Run.compileUnits(Run.scala:288)
at dotty.tools.dotc.Run.compileSuspendedUnits(Run.scala:410)
at dotty.tools.dotc.Driver.finish(Driver.scala:63)
at dotty.tools.dotc.Driver.doCompile(Driver.scala:38)
at dotty.tools.dotc.Driver.process(Driver.scala:201)
at dotty.tools.dotc.Driver.process(Driver.scala:169)
at dotty.tools.dotc.Driver.process(Driver.scala:181)
at dotty.tools.dotc.Driver.main(Driver.scala:211)
at dotty.tools.dotc.Main.main(Main.scala)
Compilation failed