Merge pull request scala#1774 from adriaanm/bc-2.9.3

binary compatibility compensation

Author: adriaanm

build.xml

@@ -2131,10 +2131,10 @@ Binary compatibility testing
     <mkdir dir="${bc-build.dir}"/>
     <!-- Pull down MIMA -->
     <artifact:dependencies pathId="mima.classpath">
-      <dependency groupId="com.typesafe" artifactId="mima-reporter_2.9.1" version="0.1.3"/>
+      <dependency groupId="com.typesafe" artifactId="mima-reporter_2.9.2" version="0.1.4"/>
     </artifact:dependencies>
     <artifact:dependencies pathId="old.bc.classpath">
-      <dependency groupId="org.scala-lang" artifactId="scala-library" version="2.9.0"/>
+      <dependency groupId="org.scala-lang" artifactId="scala-library" version="2.9.2"/>
     </artifact:dependencies>
   </target>
 

src/compiler/scala/tools/nsc/typechecker/SuperAccessors.scala

@@ -65,7 +65,7 @@ abstract class SuperAccessors extends transform.Transform with transform.TypingT
         storeAccessorDefinition(clazz, DefDef(acc, EmptyTree))
         acc
       }
-      
+
       atPos(sel.pos)(Select(gen.mkAttributedThis(clazz), superAcc) setType sel.tpe)
     }
 
@@ -131,20 +131,20 @@ abstract class SuperAccessors extends transform.Transform with transform.TypingT
       // we need an accessor to get to a super on an outer thing, but only if we can't call name more directly on
       // a trait implementation class. So this complicated condition is leaving alone cases where we don't need to do
       // anything special (i.e. we're getting a direct super class) or where a later transform will inject a call to
-      // a trait implementation method directly. 
+      // a trait implementation method directly.
       //
-      // SI-6536 has more discussion about how this works. 
+      // SI-6536 has more discussion about how this works.
       //
-      // So, we're looking for items of the form clazz.super[mix].name (or clazz.super.name wich is seen as 
+      // So, we're looking for items of the form clazz.super[mix].name (or clazz.super.name wich is seen as
       // clazz.super[EMPTY].name with some limitations. First, name has to be a term rather than a type.
-      // Then there are a couple of cases. 
+      // Then there are a couple of cases.
       def requiresAccessor = name.isTermName && (mix match {
         // If mix is empty then we only need an accessor if clazz is a trait, it's not this current class,
-        // or the validCurentOwner setting is false...which...ugh, is a mess. 
-        case tpnme.EMPTY => clazz.isTrait || clazz != currentClass || !validCurrentOwner 
+        // or the validCurentOwner setting is false...which...ugh, is a mess.
+        case tpnme.EMPTY => clazz.isTrait || clazz != currentClass || !validCurrentOwner
         // If the mix is set then if it refers to a class and the clazz part isn't the current class
         // it's not just super[mix].name then we need to generate an accessor.
-        case _           => clazz != currentClass && !mixTpeIsTrait 
+        case _           => clazz != currentClass && !mixTpeIsTrait
       })
 
       if (requiresAccessor) ensureAccessor(sel)
@@ -232,7 +232,7 @@ abstract class SuperAccessors extends transform.Transform with transform.TypingT
                 parent.info.decls filterNot (x => x.isPrivate || x.hasLocalFlag) foreach { m2 =>
                   if (sym.name == m2.name && m2.isGetter && m2.accessed.isMutable) {
                     unit.warning(sel.pos,
-                        sym.accessString + " " + sym.fullLocationString + " shadows mutable " + m2.name
+                        sym.fullLocationString + " shadows mutable " + m2.name
                       + " inherited from " + m2.owner + ".  Changes to " + m2.name + " will not be visible within "
                       + sym.owner + " - you may want to give them distinct names."
                     )
@@ -263,7 +263,7 @@ abstract class SuperAccessors extends transform.Transform with transform.TypingT
             // FIXME - this should be unified with needsProtectedAccessor, but some
             // subtlety which presently eludes me is foiling my attempts.
             val shouldEnsureAccessor = (
-                 currentClass.isTrait 
+                 currentClass.isTrait
               && sym.isProtected
               && sym.enclClass != currentClass
               && !sym.owner.isTrait

src/library/scala/collection/immutable/Stream.scala

@@ -479,7 +479,7 @@ self =>
   final class StreamWithFilter(p: A => Boolean) extends WithFilter(p) {
 
     override def map[B, That](f: A => B)(implicit bf: CanBuildFrom[Stream[A], B, That]): That = {
-      def tailMap(coll: Stream[A]): Stream[B] = {
+      def tailMapConstStack(coll: Stream[A]): Stream[B] = {
         var head: A = null.asInstanceOf[A]
         var tail: Stream[A] = coll
         while (true) {
@@ -488,17 +488,17 @@ self =>
           head = tail.head
           tail = tail.tail
           if (p(head))
-            return cons(f(head), tailMap(tail))
+            return cons(f(head), tailMapConstStack(tail))
         }
         throw new RuntimeException()
       }
 
-      if (isStreamBuilder(bf)) asThat(tailMap(Stream.this))
+      if (isStreamBuilder(bf)) asThat(tailMapConstStack(Stream.this))
       else super.map(f)(bf)
     }
 
     override def flatMap[B, That](f: A => GenTraversableOnce[B])(implicit bf: CanBuildFrom[Stream[A], B, That]): That = {
-      def tailFlatMap(coll: Stream[A]): Stream[B] = {
+      def tailFlatMapConstStack(coll: Stream[A]): Stream[B] = {
         var head: A = null.asInstanceOf[A]
         var tail: Stream[A] = coll
         while (true) {
@@ -507,12 +507,12 @@ self =>
           head = tail.head
           tail = tail.tail
           if (p(head))
-            return f(head).toStream append tailFlatMap(tail)
+            return f(head).toStream append tailFlatMapConstStack(tail)
         }
         throw new RuntimeException()
       }
 
-      if (isStreamBuilder(bf)) asThat(tailFlatMap(Stream.this))
+      if (isStreamBuilder(bf)) asThat(tailFlatMapConstStack(Stream.this))
       else super.flatMap(f)(bf)
     }
 
@@ -522,6 +522,10 @@ self =>
 
     override def withFilter(q: A => Boolean): StreamWithFilter =
       new StreamWithFilter(x => p(x) && q(x))
+
+    // DO NOT USE -- for binary compatibility
+    def tailMap$1(f: Nothing => Nothing): Stream[Nothing] = null
+    def tailFlatMap$1(f: Nothing => Nothing): Stream[Nothing] = null
   }
 
   /** A lazier Iterator than LinearSeqLike's. */

src/library/scala/reflect/generic/HasFlags.scala

@@ -183,20 +183,6 @@ import Flags._
   def hasTraitFlag   = hasFlag(TRAIT)
   def hasDefaultFlag = hasFlag(DEFAULTPARAM)
 
-  def accessString: String = {
-    val pw = if (hasAccessBoundary) privateWithin.toString else ""
-    
-    if (pw == "") {
-      if (hasAllFlags(PRIVATE | LOCAL)) "private[this]"
-      else if (hasAllFlags(PROTECTED | LOCAL)) "protected[this]"
-      else if (hasFlag(PRIVATE)) "private"
-      else if (hasFlag(PROTECTED)) "protected"
-      else ""
-    }
-    else if (hasFlag(PROTECTED)) "protected[" + pw + "]"
-    else "private[" + pw + "]"
-  }
-
   // Straightforwardly named accessors already being used differently.
   // These names are most likely temporary.
   def hasAbstractFlag      = hasFlag(ABSTRACT)