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dstu/errordemo.scala

Created April 21, 2014 20:13
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Dead code error in Scala macro definintion
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errordemo.scala
package errordemo
import scala.annotation.StaticAnnotation
import scala.reflect.macros.whitebox.Context
class mymacro extends StaticAnnotation {
def macroTransform(annottees: Any*): Any = macro MacroImpl.macroImpl
}
class MacroImpl(val c: Context) {
import c.universe._
def macroImpl(annottees: c.Expr[Any]*): c.Expr[Any] = c.literalUnit
}
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dstu commented Apr 21, 2014

Scala 2.11.0, macroparadise 2.0.0, sbt 0.13.2. Error message: "dead code following this construct" at "macro MacroImpl.macroImpl".

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dstu commented Apr 22, 2014

NB: This crops up as an error when -Ywarn-dead-code and -Xfatal-warnings are passed to scalac. The warning is spurious, and a patch has been written. This should be fixed in Scala 2.11.1.

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