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Quasiquotes crash if unlifted type is infinitely deep iterable #8466

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scabug opened this issue Apr 1, 2014 · 2 comments
Closed

Quasiquotes crash if unlifted type is infinitely deep iterable #8466

scabug opened this issue Apr 1, 2014 · 2 comments
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@scabug
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scabug commented Apr 1, 2014

Due to bug in unlifting following code crashes with StackOverflow:

implicit val unliftXmlComment = Unliftable[xml.Comment] {
  case q"new _root_.scala.xml.Comment(${value: String})" => xml.Comment(value)
}
val q"${comment: xml.Comment}" = q"<!--foo-->"

This is caused by the fact that quasiquotes tries to recursively unwrap xml.Node as an iterable to figure out its rank but due to the fact that xml.Node is an Iterable[xml.Node] it causes infinite recursion.

@scabug
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scabug commented Apr 1, 2014

Imported From: https://issues.scala-lang.org/browse/SI-8466?orig=1
Reporter: @densh
Affected Versions: 2.11.0

@scabug scabug closed this as completed Apr 2, 2014
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scabug commented Apr 2, 2014

@retronym said:
scala/scala#3671

@scabug scabug added this to the 2.11.0-RC4 milestone Apr 7, 2017
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