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PolyFunction desugar: Don't copy type flags to parameter #16891

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Merged
merged 2 commits into from
Feb 12, 2023
Merged

PolyFunction desugar: Don't copy type flags to parameter #16891

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4e8e201
PolyFunction desugar: Don't copy type flags to parameter
odersky Feb 11, 2023
bdd56dd
Move test to cc directory
odersky Feb 12, 2023
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2 changes: 1 addition & 1 deletion compiler/src/dotty/tools/dotc/ast/Desugar.scala
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Expand Up @@ -1732,7 +1732,7 @@ object desugar {

val applyVParams = vargs.zipWithIndex.map {
case (p: ValDef, _) => p.withAddedFlags(mods.flags)
case (p, n) => makeSyntheticParameter(n + 1, p).withAddedFlags(mods.flags)
case (p, n) => makeSyntheticParameter(n + 1, p).withAddedFlags(mods.flags.toTermFlags)
}
RefinedTypeTree(polyFunctionTpt, List(
DefDef(nme.apply, applyTParams :: applyVParams :: Nil, res, EmptyTree).withFlags(Synthetic)
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3 changes: 3 additions & 0 deletions tests/pos/i16871.scala
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@@ -0,0 +1,3 @@
import scala.language.experimental.captureChecking

val f: [X] => Int => Int = [X] => (x: Int) => x