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-rw-r--r--compiler/src/dotty/tools/dotc/config/Settings.scala3
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/src/dotty/tools/dotc/config/Settings.scala b/compiler/src/dotty/tools/dotc/config/Settings.scala
index 58fa6d366..c2763cdf0 100644
--- a/compiler/src/dotty/tools/dotc/config/Settings.scala
+++ b/compiler/src/dotty/tools/dotc/config/Settings.scala
@@ -6,6 +6,7 @@ import scala.util.{ Try, Success, Failure }
import scala.reflect.internal.util.StringOps
import reflect.ClassTag
import core.Contexts._
+import scala.annotation.tailrec
// import annotation.unchecked
// Dotty deviation: Imports take precedence over definitions in enclosing package
// (Note that @unchecked is in scala, not annotation, so annotation.unchecked gives
@@ -217,7 +218,7 @@ object Settings {
case "--" :: args =>
checkDependencies(stateWithArgs(skipped ++ args))
case x :: _ if x startsWith "-" =>
- def loop(settings: List[Setting[_]]): ArgsSummary = settings match {
+ @tailrec def loop(settings: List[Setting[_]]): ArgsSummary = settings match {
case setting :: settings1 =>
val state1 = setting.tryToSet(state)
if (state1 ne state) processArguments(state1, processAll, skipped)