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Adapt toInstantiate in interpolateTypeVars to consider #20399 #20426

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May 19, 2024
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Adapt toInstantiate in interpolateTypeVars to consider #20399 #20426

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4 changes: 3 additions & 1 deletion compiler/src/dotty/tools/dotc/typer/Inferencing.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -706,7 +706,9 @@ trait Inferencing { this: Typer =>
else
typr.println(i"no interpolation for nonvariant $tvar in $state")
)
buf.toList
// constrainIfDependentParamRef could also have instantiated tvars added to buf before the check
buf.filterNot(_._1.isInstantiated).toList
end toInstantiate

def typeVarsIn(xs: ToInstantiate): TypeVars =
xs.foldLeft(SimpleIdentitySet.empty: TypeVars)((tvs, tvi) => tvs + tvi._1)
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