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Fixes SI-6500 by making erasure more regular.
With the introduction of value classes, erasure uses specialErasure where a value class C with underlying type T is unboxed to an ErasedValueType. ErasedValue types are eliminated on phase later, in post-erasure. This was done everywhere, except in the parameter types of bridge methods. That was a mistale, because that way bridge methods could not do the boxing/unboxing logic triggered by ErasedValueTypes. Note: there is one remaining use of erasure (not specialErasure) in Erasure.scala. I put in a comment why that is OK.
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Original file line number | Diff line number | Diff line change |
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object Test extends App { | ||
class Box(val value: Int) extends AnyVal | ||
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trait Foo { | ||
def append(box: Box): Foo | ||
} | ||
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class Bar extends Foo { | ||
override def append(box: Box): Bar = this // produces bad forwarder | ||
} | ||
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((new Bar): Foo).append(new Box(0)) | ||
} |