1 files changed, 107 insertions, 0 deletions
diff --git a/test/scaladoc/run/t5527.scala b/test/scaladoc/run/t5527.scala
new file mode 100644
index 0000000000..2449ff60c3
--- /dev/null
+++ b/test/scaladoc/run/t5527.scala
@@ -0,0 +1,107 @@
+import scala.tools.partest._
+import java.io._
+import scala.tools.nsc._
+import scala.tools.nsc.util.CommandLineParser
+import scala.tools.nsc.doc.{Settings, DocFactory}
+import scala.tools.nsc.reporters.ConsoleReporter
+
+object Test extends DirectTest {
+
+  override def extraSettings: String = "-usejavacp -Xprint:parser -Yrangepos -Ystop-after:parser -d " + testOutput.path
+
+  override def code = """
+    // SI-5527
+    object UselessComments {
+
+      var z = 0
+
+      def test1 = {
+        /** Some comment here */
+        object Maybe {
+          /** Some comment inside */
+          def nothing() = ()
+        }
+      }
+
+      def test2 = {
+        var x = 4
+        if (true) {
+          /** Testing 123 */
+          x = 5
+          val y = 6
+        }
+      }
+
+      def test3 = {
+        if (true)
+         z = 3
+
+        /** Calculate this result. */
+        val t = 4
+        for (i <- 0 to 4)
+          println(i)
+      }
+
+      val test4 = ('a') match {
+        /** Another digit is a giveaway. */
+        case '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9'  =>
+          true
+        case _ =>
+          false
+      }
+    }
+
+    /** comments that we should keep */
+    object UsefulComments {
+      /** class A */
+      class A {
+        /** f */
+        def f(i: Int) = i
+        /** v */
+        val v = 1
+        /** u */
+        var u = 2
+      }     
+      /** trait B */
+      trait B {
+        /** T */
+        type T
+        /** f */
+        def f(i: Int)
+        /** v */
+        val v = 1
+        /** u */
+        var u = 2
+      }     
+      /** object C */
+      object C {
+        /** f */
+        def f(i: Int) = i
+        /** v */
+        val v = 1
+        /** u */
+        var u = 2
+      }
+      /** class D */
+      @deprecated("use ... instead", "2.10.0")
+      class D
+    }
+  """.trim
+
+  override def show(): Unit = {
+    // redirect err to out, for logging
+    val prevErr = System.err
+    System.setErr(System.out)
+    compile()
+    System.setErr(prevErr)
+  }
+
+  override def newCompiler(args: String*): Global = {
+    // we want the Scaladoc compiler here, because it keeps DocDef nodes in the tree
+    val settings = new Settings(_ => ())
+    val command = new ScalaDoc.Command((CommandLineParser tokenize extraSettings) ++ args.toList, settings)
+    new DocFactory(new ConsoleReporter(settings), settings).compiler
+  }
+
+  override def isDebug = false // so we don't get the newSettings warning
+}