SI-7019 Fix crasher with private[this] extension methods

When we move the body of value class methods to the corresponding
extension method, we typecheck a forward method that remains
in the class. In order to allow access, this commit weakens the
access of `private[local]` extension methods to `private`.

1 files changed, 10 insertions, 0 deletions

diff --git a/test/files/run/t7019.scala b/test/files/run/t7019.scala
new file mode 100644
index 0000000000..5dcc09d2b6
--- /dev/null
+++ b/test/files/run/t7019.scala
@@ -0,0 +1,10 @@
+final class Foo(val i: Int) extends AnyVal {
+  def foo() = go(i)
+  private[this] def go(i: Int) = i * 2
+}
+
+object Test {
+  def main(args: Array[String]): Unit = {
+    assert(new Foo(1).foo() == 2)
+  }
+}