SI-9097 Remove spurious warning about conflicting filenames

When using delambdafy:method, closure classes are generated late.
The class is added to a map and integrated into the PackageDef in
transformStats.

When declaring a package object, there are potentially multiple
PackageDefs for the same package. In this case, the closure class
was added to all of them. As a result, GenASM / GenBCode would run
multiple times on the closure class. In GenBCode this would trigger
a warning about conflicting filenames.

1 files changed, 26 insertions, 0 deletions

diff --git a/test/files/run/t9097.scala b/test/files/run/t9097.scala
new file mode 100644
index 0000000000..0f148c3b9d
--- /dev/null
+++ b/test/files/run/t9097.scala
@@ -0,0 +1,26 @@
+import scala.tools.partest._
+import java.io.{Console => _, _}
+
+object Test extends DirectTest {
+
+  override def extraSettings: String = "-usejavacp -Ydelambdafy:method -Xprint:delambdafy -d " + testOutput.path
+
+  override def code = """package o
+                        |package a {
+                        |  class C {
+                        |    def hihi = List(1,2).map(_ * 2)
+                        |  }
+                        |}
+                        |package object a {
+                        |  def f = 1
+                        |}
+                        |""".stripMargin.trim
+
+  override def show(): Unit = {
+    val baos = new java.io.ByteArrayOutputStream()
+    Console.withOut(baos)(Console.withErr(baos)(compile()))
+    val out = baos.toString("UTF-8")
+    // was 2 before the fix, the two PackageDefs for a would both contain the ClassDef for the closure
+    assert(out.lines.count(_ contains "class hihi$1") == 1, out)
+  }
+}