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ProcessBuilder.Sink.#< is causing Process non-termination from 2.12 #10055

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scabug opened this issue Nov 14, 2016 · 2 comments
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ProcessBuilder.Sink.#< is causing Process non-termination from 2.12 #10055

scabug opened this issue Nov 14, 2016 · 2 comments

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@scabug
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scabug commented Nov 14, 2016

Here's the transcript of a REPL session with scala 2.11:

Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.

scala> import scala.sys.process._
import scala.sys.process._

scala> Process("date").!
Mon Nov 14 12:14:46 GMT 2016
res0: Int = 0

scala> Process("date").#<( () => -1 ).!
Mon Nov 14 12:14:49 GMT 2016
res1: Int = 0

Here is the same REPL session under 2.12.0

Welcome to Scala 2.12.0 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.

scala> import scala.sys.process._
import scala.sys.process._

scala> Process("date").!
Mon Nov 14 12:15:21 GMT 2016
res0: Int = 0

scala> Process("date").#<( () => -1 ).!
Mon Nov 14 12:15:23 GMT 2016

This session is hanging indefinitely and the process exit code is never returned
@scabug
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scabug commented Nov 14, 2016

Imported From: https://issues.scala-lang.org/browse/SI-10055?orig=1
Reporter: @oxbowlakes
Affected Versions: 2.12.0
See #9824
Duplicates #10007

@hongxuchen hongxuchen mentioned this issue May 22, 2017
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@som-snytt
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Duplicates #9824

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@som-snytt @scabug