ClassfileParser: apply scala commit b2c67b3 (java8 default methods)

Author: samuelgruetter

src/dotty/tools/dotc/core/Flags.scala

@@ -342,6 +342,9 @@ object Flags {
   /** Symbol is a Java-style varargs method */
   final val JavaVarargs = termFlag(38, "<varargs>")
 
+  /** Symbol is a Java default method */
+  final val DefaultMethod = termFlag(39, "<defaultmethod>")
+
   // Flags following this one are not pickled
 
   /** Denotation is in train of being loaded and completed, used to catch cyclic dependencies */

src/dotty/tools/dotc/core/pickling/ClassfileParser.scala

@@ -496,6 +496,13 @@ class ClassfileParser(
         case tpnme.ExceptionsATTR =>
           parseExceptions(attrLen)
 
+        case tpnme.CodeATTR =>
+          if (sym.owner is Flags.Interface) {
+            sym.setFlag(Flags.DefaultMethod)
+            ctx.log(s"$sym in ${sym.owner} is a java8+ default method.")
+          }
+          in.skip(attrLen)
+
         case _ =>
       }
       in.bp = end