SI-9383 Improved unused import warning

Previously, implicit search would mark every import
it touched as a lookup.

Instead, let subsequent type check perform the lookup.

1 files changed, 17 insertions, 0 deletions

diff --git a/test/files/neg/warn-unused-imports/sample_1.scala b/test/files/neg/warn-unused-imports/sample_1.scala
new file mode 100644
index 0000000000..d2f86239db
--- /dev/null
+++ b/test/files/neg/warn-unused-imports/sample_1.scala
@@ -0,0 +1,17 @@
+
+import language._
+
+object Sample {
+  trait X
+  trait Y
+
+  // import of the non-implicit should be unused
+  object Implicits {
+    def `int to X`(i: Int): X = null
+    implicit def `int to Y`(i: Int): Y = null
+    implicit def useless(i: Int): String = null
+  }
+
+  def f(x: X) = ???
+  def g(y: Y) = ???
+}