Fighting bitrot with typing.

  if (false && settings.debug.value) { ... }
      Date:   7 years ago
      *** empty log message ***

That's way past the sell-by date for 'if (false && condition)'.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/compiler/scala/tools/nsc/typechecker/Contexts.scala b/src/compiler/scala/tools/nsc/typechecker/Contexts.scala
index e2d4efab83..4584ba032d 100644
--- a/src/compiler/scala/tools/nsc/typechecker/Contexts.scala
+++ b/src/compiler/scala/tools/nsc/typechecker/Contexts.scala
@@ -405,6 +405,17 @@ trait Contexts { self: Analyzer =>
       case _                => outer.isLocal()
     }
 
+    /** Fast path for some slow checks (ambiguous assignment in Refchecks, and
+     *  existence of __match for MatchTranslation in virtpatmat.) This logic probably
+     *  needs improvement.
+     */
+    def isNameInScope(name: Name) = (
+      enclosingContextChain exists (ctx =>
+           (ctx.scope.lookupEntry(name) != null)
+        || (ctx.owner.rawInfo.member(name) != NoSymbol)
+      )
+    )
+
     // nextOuter determines which context is searched next for implicits
     // (after `this`, which contributes `newImplicits` below.) In
     // most cases, it is simply the outer context: if we're owned by