Fix check for number of arguments

Fix the test for number of arguments by passing all arguments instead
of passing the argument list as a single argument.

Add positive and negative tests for it.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/library/scala/StringContext.scala b/src/library/scala/StringContext.scala
index 1f0b4c766e..6116547aa2 100644
--- a/src/library/scala/StringContext.scala
+++ b/src/library/scala/StringContext.scala
@@ -43,7 +43,7 @@ case class StringContext(parts: String*) {
    *          that does not start a valid escape sequence.
    */
   def s(args: Any*) = {
-    checkLengths(args)
+    checkLengths(args: _*)
     val pi = parts.iterator
     val ai = args.iterator
     val bldr = new java.lang.StringBuilder(treatEscapes(pi.next))
@@ -83,7 +83,7 @@ case class StringContext(parts: String*) {
    *      format specifier `%s` and adding a corresponding argument string `"%"`.
    */
   def f(args: Any*) = {
-    checkLengths(args)
+    checkLengths(args: _*)
     val pi = parts.iterator
     val ai = args.iterator
     val bldr = new java.lang.StringBuilder