Merge pull request #1364 from dotty-staging/exhaustivity2

Implementation of exhaustivity and redundancy check

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/patmat/virtpatmat_exhaust_compound.scala.ignore b/tests/patmat/virtpatmat_exhaust_compound.scala.ignore
new file mode 100644
index 000000000..4ff04dd06
--- /dev/null
+++ b/tests/patmat/virtpatmat_exhaust_compound.scala.ignore
@@ -0,0 +1,29 @@
+sealed trait Base
+case object O1 extends Base
+case object O2 extends Base {
+  def foo: Int = 0
+}
+
+sealed trait Base2
+case object O3 extends Base2
+
+case object O4 extends Base with Base2
+
+object Test {
+  val a /*: Product with Serializable with Base */ = if (true) O1 else O2
+  a match {
+    case null =>
+  }
+
+  def t1(a: Product with Base with Base2) = a match {
+    case null => // O1..O3 should *not* be possible here
+  }
+
+  def t2(a: Product with Base { def foo: Int }) = a match {
+    case null => // O2 in the domain
+  }
+
+  def t3(a: Product with Base { def bar: Int }) = a match {
+    case null => // nothing in the domain
+  }
+}