From aaae8db368ea3d67cfc60df471fe908abb0f4fa2 Mon Sep 17 00:00:00 2001
From: Paul Phillips <paulp@improving.org>
Date: Sat, 17 Oct 2009 13:02:10 +0000
Subject: Fix for #1687.

---
 src/compiler/scala/tools/nsc/symtab/classfile/ClassfileParser.scala | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/compiler/scala/tools/nsc/symtab/classfile/ClassfileParser.scala b/src/compiler/scala/tools/nsc/symtab/classfile/ClassfileParser.scala
index 3e3b4961e0..1eef2bf49d 100644
--- a/src/compiler/scala/tools/nsc/symtab/classfile/ClassfileParser.scala
+++ b/src/compiler/scala/tools/nsc/symtab/classfile/ClassfileParser.scala
@@ -1105,7 +1105,10 @@ abstract class ClassfileParser {
 
   private def setPrivateWithin(sym: Symbol, jflags: Int) {
     if ((jflags & (JAVA_ACC_PRIVATE | JAVA_ACC_PROTECTED | JAVA_ACC_PUBLIC)) == 0)
-      sym.privateWithin = sym.toplevelClass.owner
+      // See ticket #1687 for an example of when topLevelClass is NoSymbol: it
+      // apparently occurs when processing v45.3 bytecode.
+      if (sym.toplevelClass != NoSymbol)
+        sym.privateWithin = sym.toplevelClass.owner
   }
 
   @inline final private def isPrivate(flags: Int) =
-- 
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