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class defined with paste mode mismatches #9734

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scabug opened this issue Apr 5, 2016 · 5 comments
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class defined with paste mode mismatches #9734

scabug opened this issue Apr 5, 2016 · 5 comments
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@som-snytt
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repl
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2.11.11

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@scabug
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scabug commented Apr 5, 2016

This bug only exists with the flag -Yrepl-class-based:

#  scala -Yrepl-class-based
Welcome to Scala version 2.11.7 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_60).
Type in expressions to have them evaluated.
Type :help for more information.

scala> :pa
// Entering paste mode (ctrl-D to finish)

case class Data(i: Int)
val d = Data(1)

// Exiting paste mode, now interpreting.

defined class Data
d: Data = Data(1)

scala> val d2: Data = d
<console>:14: error: type mismatch;
 found   : Data
 required: Data
       val d2: Data = d
                      ^

scala>
@scabug
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scabug commented Apr 5, 2016

Imported From: https://issues.scala-lang.org/browse/SI-9734?orig=1
Reporter: Wenchen Fan (cloud)
Affected Versions: 2.11.7
Other Milestones: 2.12.0-M5

@scabug
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scabug commented Apr 5, 2016

Wenchen Fan (cloud) said:
cc [~rxin]

@scabug
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scabug commented Apr 5, 2016

@som-snytt said:
Minimization of a sort:

import $line3.$read.INSTANCE.$iw.$iw.D;
val $line3$read = $line3.$read.INSTANCE;
import $line3$read.$iw.$iw.d;
val x: D = d

or

package badinterp {

  class read { case class D(i: Int) }
  object read { val instance = new read }

  object Test extends App {
    import badinterp.read.instance.D
    val instance = badinterp.read.instance
    //val instance: read.instance.type = read.instance  // works
    val x: D = instance.D(42)
    Console println x
  }
}

@scabug
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scabug commented Apr 5, 2016

@som-snytt said:
I would have added, Fixed in Ammonite, but I didn't actually try it out.

@scabug
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scabug commented Apr 5, 2016

@som-snytt said:
scala/scala#5084

@scabug scabug closed this as completed Apr 20, 2016
@scabug scabug added the repl label Apr 7, 2017
@scabug scabug added this to the 2.11.9 milestone Apr 7, 2017
@scabug scabug mentioned this issue Apr 7, 2017
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