Fix #1865: Compute outer path at right phase #1873
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When computing the outer path, we need to be careful to dealias before erasure, even if the outer path is demanded during erasure. Otherwise we lose prefixes.
smarter
reviewed
Jan 3, 2017
| else tpe.prefix | ||
| case _ => | ||
| outerPrefix(tpe.underlying) | ||
| outerPrefix(tpe.underlying(ctx.withPhaseNoLater(ctx.erasurePhase))) |
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Since this is somewhat subtle, I would add a comment here that restates what is in the commit message.
| val cls = fun.symbol.owner.asClass | ||
| def outerArg(receiver: Tree): Tree = receiver match { | ||
| case New(_) | Super(_, _) => | ||
| println(i"outerarg: ${receiver.tpe} --> ${outerPrefix(receiver.tpe)} at ${ctx.phase}") |
| @@ -0,0 +1,24 @@ | |||
| class AbsCell { | |||
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This test is in tests/pending/ so we're not actually running it
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When computing the outer path, we need to be careful to dealias before erasure,
even if the outer path is demanded during erasure. Otherwise we lose prefixes.
Review by @DarkDimius ?