Traverse synthetic top-level members in API

internal/compiler-bridge/src/main/scala/xsbt/API.scala

@@ -89,7 +89,6 @@ final class API(val global: CallbackGlobal) extends Compat with GlobalHelpers {
       !ignoredSymbol(sym) &&
       sym.isStatic &&
       !sym.isImplClass &&
-      !sym.hasFlag(Flags.SYNTHETIC) &&
       !sym.hasFlag(Flags.JAVA) &&
       !sym.isNestedClass
     }

internal/compiler-bridge/src/main/scala/xsbt/ExtractUsedNames.scala

@@ -276,8 +276,9 @@ class ExtractUsedNames[GlobalType <: CallbackGlobal](val global: GlobalType)
 
       case t if t.hasSymbolField =>
         val symbol = t.symbol
-        if (symbol != rootMirror.RootPackage)
+        if (symbol != rootMirror.RootPackage) {
           addSymbol(getNamesOfEnclosingScope, t.symbol)
+        }
 
         val tpe = t.tpe
         if (!ignoredType(tpe)) {

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/A.scala

@@ -0,0 +1,3 @@
+case class A (
+  name: String
+)

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/UseSite.scala

@@ -0,0 +1,4 @@
+object UseSite extends App {
+  println("hello world")
+	val y = A("5")
+}

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/changes/A.scala

@@ -0,0 +1,3 @@
+case class A(
+  name: Int
+)

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/changes/A2.scala

@@ -0,0 +1,4 @@
+case class A(
+  name: Int,
+  ms: Long = 0L
+)

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/changes/A3.scala

@@ -0,0 +1,4 @@
+case class A(
+  name: Int,
+  ms: String = ""
+)

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/changes/A4.scala

@@ -0,0 +1,4 @@
+case class A(
+  name: Int,
+  ms: Char = 'c'
+)

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/changes/UseSite.scala

@@ -0,0 +1,4 @@
+object UseSite extends App {
+  println("hello world")
+	val y = A(5)
+}

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/changes/UseSite2.scala

@@ -0,0 +1,4 @@
+object UseSite extends App {
+  println("hello world")
+	val y = A(5, "asdf")
+}

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/incOptions.properties

@@ -0,0 +1,2 @@
+apiDebug = true
+relationsDebug = true

zinc/src/sbt-test/source-dependencies/case-classes-no-companion/test

@@ -0,0 +1,13 @@
+> compile
+$ copy-file changes/A.scala A.scala
+-> compile
+$ copy-file changes/UseSite.scala UseSite.scala
+> run
+$ copy-file changes/A2.scala A.scala
+> run
+$ copy-file changes/A3.scala A.scala
+> run
+$ copy-file changes/UseSite2.scala UseSite.scala
+> run
+$ copy-file changes/A4.scala A.scala
+-> compile

zinc/src/sbt-test/source-dependencies/package-object-name/test

@@ -1,3 +1,4 @@
 > compile
 $ copy-file changes/A1.scala A.scala
 > compile
+> checkIterations 2

zinc/src/sbt-test/source-dependencies/packageobject-and-traits/Bar.scala

@@ -1,7 +1,6 @@
-import foo.Foo
+package foo
 import Baz.myNr
 
-
 class Bar {
-	val nr: Int = implicitly
-}
+	val nr: Int = implicitly[Int]
+}

zinc/src/sbt-test/source-dependencies/packageobject-and-traits/Baz.scala

@@ -1,3 +1,4 @@
+package foo
 object Baz {
 	implicit val myNr = 1234
-}
+}