SI-9397 Add "_root_" to "GenUtils.scalaFactoryCall" to avoid the scala package name conflits (#5150)

When a user imports some package ending with `scala`, the macro expansion of TypeTag may not work because it uses `scala.collection.immutable.List` but it's overrided. This patch adds the `_root_` prefix to avoid the scala package name conflits. Of cause, after this fix, importing a package ending with `_root_` has the same issue. However, people rarely do that.

1 files changed, 12 insertions, 0 deletions

diff --git a/test/files/pos/t9397.scala b/test/files/pos/t9397.scala
new file mode 100644
index 0000000000..3dbc6591d3
--- /dev/null
+++ b/test/files/pos/t9397.scala
@@ -0,0 +1,12 @@
+package foo.scala
+
+import scala.reflect.runtime.universe._
+
+object Foo {
+
+  def bar[T: TypeTag]() {
+  }
+
+  import foo._
+  bar[String]()
+}