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build manager: Extending sealed class hierarchy does not recompile pattern matches, missing compile warning #2559

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scabug opened this issue Nov 2, 2009 · 2 comments
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build manager: Extending sealed class hierarchy does not recompile pattern matches, missing compile warning #2559

scabug opened this issue Nov 2, 2009 · 2 comments
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@scabug
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scabug commented Nov 2, 2009

A.scala:

sealed trait A
class B extends A
class C extends A
// class E extends A

D.scala:

object D {
	def x(a: A) =
	    a match {
	        case _: B => ()
	        case _: C => ()
	    }
}
  1. Compile.
  2. Uncomment class E in A.scala
  3. Mark A.scala modified
  4. Manager recompiles A.scala but not D.scala. The compile warning about non-exhaustiveness is missed.
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scabug commented Nov 2, 2009

Imported From: https://issues.scala-lang.org/browse/SI-2559?orig=1
Reporter: @harrah

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scabug commented Dec 10, 2009

@hubertp said:
(In r20085) Closes #2559

@scabug scabug closed this as completed May 18, 2011
@scabug scabug added the build label Apr 7, 2017
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