Merge pull request #500 from dotty-staging/implement/i499

Implement/i499

2 files changed, 43 insertions, 0 deletions

diff --git a/tests/pos/byNameVarargs.scala b/tests/pos/byNameVarargs.scala
new file mode 100644
index 000000000..e7f9664ab
--- /dev/null
+++ b/tests/pos/byNameVarargs.scala
@@ -0,0 +1,15 @@
+package test
+
+object O {
+
+  def byname(xs: => Int*) = xs.sum
+  def byval(xs: Int*) = xs.sum
+
+  def a = 1
+  def b = 2
+
+  byval(a, b)
+  byname(a, b)
+
+}
+
diff --git a/tests/run/byNameVarargs/i499.scala b/tests/run/byNameVarargs/i499.scala
new file mode 100644
index 000000000..be40ead50
--- /dev/null
+++ b/tests/run/byNameVarargs/i499.scala
@@ -0,0 +1,28 @@
+object Test {
+  def foo(a: => Any*) = ()
+  def bar(a: => Any*) = foo(a : _*)
+  def baz(a: => Seq[Any]) = foo(a : _*)
+  bar(???, ???)
+  baz(Seq(???, ???))
+  baz(Array(???, ???))
+
+  def foo1(a => Any, b: => Any*) = ()
+  foo1(???)
+  foo1(???, ???, ???)
+
+  def assertFails(a => Any) = {
+   var failed = false 
+   try {
+     a
+   } catch {
+     case e => failed = true
+   }
+   assert(failed)
+  }
+
+  def forceLength(b: => Any*) = b.length
+  assertFails(forceLength(???))
+
+  def forceHead(b: => Any*) = b(0)
+  assertFails(forceHead(1, ???))
+}