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-rw-r--r--src/compiler/scala/tools/nsc/MainGenericRunner.scala10
1 files changed, 6 insertions, 4 deletions
diff --git a/src/compiler/scala/tools/nsc/MainGenericRunner.scala b/src/compiler/scala/tools/nsc/MainGenericRunner.scala
index 53ae8cc793..c5b903066f 100644
--- a/src/compiler/scala/tools/nsc/MainGenericRunner.scala
+++ b/src/compiler/scala/tools/nsc/MainGenericRunner.scala
@@ -102,10 +102,12 @@ object MainGenericRunner {
catch { case e => Console.println(e); None }
def urls(specs: String): List[URL] = {
- val urls = for (
- spec <- specs.split(" ").toList;
- val url = specToURL(spec); if !url.isEmpty
- ) yield url.get
+ val urls =
+ if (specs == null || specs.length == 0) Nil
+ else for (
+ spec <- specs.split(" ").toList;
+ val url = specToURL(spec); if !url.isEmpty
+ ) yield url.get
if (!urls.isEmpty && (System.getSecurityManager == null)) {
// Here we require a security manager to be present !
// Security permissions are defined in a user-defined