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ExistentialType reaches GenASM #7552

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scabug opened this issue Jun 4, 2013 · 2 comments
Closed

ExistentialType reaches GenASM #7552

scabug opened this issue Jun 4, 2013 · 2 comments
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@scabug
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scabug commented Jun 4, 2013

As part of scala/scala#2575 , akka-actors was built using the new backend , which revealed that existential types were reaching the bytecode emitter.

[error] ExistentialType reached GenBCode: akka.dispatch.RequiresMessageQueue[_]

The relevant code section in GenASM is:

// !!! Iulian says types which make no sense after erasure should not reach here,
// which includes the ExistentialType, AnnotatedType, RefinedType.  I don't know
// if the first two cases exist because they do or as a defensive measure, but
// at the time I added it, RefinedTypes were indeed reaching here.
case ExistentialType(_, t)           => toTypeKind(t)
case AnnotatedType(_, t, _)          => toTypeKind(t)
case RefinedType(parents, _)         => parents map toTypeKind reduceLeft lub
@scabug
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scabug commented Jun 4, 2013

Imported From: https://issues.scala-lang.org/browse/SI-7552?orig=1
Reporter: @magarciaEPFL
Affected Versions: 2.11.0-M3
See #7122

@scabug scabug added the backend label Apr 7, 2017
@SethTisue
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closing stale backend tickets; comment/reopen if you have evidence this is still applicable

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@SethTisue @scabug