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implicit resolution via type alias fails in 2.10.1-RC1 #7180

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scabug opened this issue Feb 25, 2013 · 3 comments
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implicit resolution via type alias fails in 2.10.1-RC1 #7180

scabug opened this issue Feb 25, 2013 · 3 comments
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@scabug
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@scabug scabug commented Feb 25, 2013

Implicit resolution fails via a type alias in 2.10.1-RC1 yet works fine in 2.10.0

The following shows the problem:

trait Higher[F[_]]

trait Box[A] 
object Box {
  implicit def HigherBox = new Higher[Box] {}
}
 
object Foo {
  val box = implicitly[Higher[Box]] // compiles fine !!!

  type Bar[A] = Box[A]
  val bar = implicitly[Higher[Bar]] // <-- this doesn't compile in 2.10.1-RC1, but does in 2.10.0 !!!
}
@scabug
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@scabug scabug commented Feb 25, 2013

Imported From: https://issues.scala-lang.org/browse/SI-7180?orig=1
Reporter: Jed Wesley-Smith (jedws)
Affected Versions: 2.10.1-RC1

@scabug
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@scabug scabug commented Feb 25, 2013

@gkossakowski said:
Jason, assigning to you and rising it to blocker as it seems like source-incompatible regression in area you are familiar with.

@scabug
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@scabug scabug commented Feb 25, 2013

@scabug scabug closed this Feb 25, 2013
@scabug scabug added this to the 2.10.1 milestone Apr 7, 2017
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