more additions to checknull.

1 files changed, 15 insertions, 0 deletions

diff --git a/test/files/neg/bug997.scala b/test/files/neg/bug997.scala
new file mode 100755
index 0000000000..b6897e62df
--- /dev/null
+++ b/test/files/neg/bug997.scala
@@ -0,0 +1,15 @@
+// An extractor with 2 results
+object Foo { def unapply(x : String)  = Some(Pair(x, x)) }
+
+object Test extends Application {
+
+// Prints 'x'; ought not to compile (or maybe a should be the Pair?).
+"x" match { case Foo(a) => Console.println(a) }
+
+// Prints '(x,x)' as expected.
+"x" match { case Foo(a, b) => Console.println((a,b)) }
+
+// Gives confusing error 'not found: value c'.
+"x" match { case Foo(a, b, c) => Console.println((a,b,c)) }
+
+}