diff options
| -rw-r--r-- | src/library/scala/collection/immutable/ListMap.scala | 8 | ||||
| -rw-r--r-- | test/files/run/t6370.scala | 12 |
2 files changed, 18 insertions, 2 deletions
diff --git a/src/library/scala/collection/immutable/ListMap.scala b/src/library/scala/collection/immutable/ListMap.scala index 670540187e..75817350e5 100644 --- a/src/library/scala/collection/immutable/ListMap.scala +++ b/src/library/scala/collection/immutable/ListMap.scala @@ -156,8 +156,12 @@ extends AbstractMap[A, B] * @return the value associated with the given key. */ override def apply(k: A): B1 = apply0(this, k) - - @tailrec private def apply0(cur: ListMap[A, B1], k: A): B1 = if (k == cur.key) cur.value else apply0(cur.tail, k) + + + @tailrec private def apply0(cur: ListMap[A, B1], k: A): B1 = + if (cur.isEmpty) throw new NoSuchElementException("key not found: "+k) + else if (k == cur.key) cur.value + else apply0(cur.tail, k) /** Checks if this map maps `key` to a value and return the * value if it exists. diff --git a/test/files/run/t6370.scala b/test/files/run/t6370.scala new file mode 100644 index 0000000000..c86b87dc8a --- /dev/null +++ b/test/files/run/t6370.scala @@ -0,0 +1,12 @@ +object Test { + + def main(args: Array[String]): Unit = { + val m = collection.immutable.ListMap( "x" -> 1 ) + try { + m("y") + } catch { + case e : NoSuchElementException => assert(e.getMessage() == "key not found: y") + } + + } +} |