Fix scala#10900: Avoid loop for F-bounds in checkCanEqual

olsdavis · Apr 4, 2022 · a4e3824 · a4e3824
1 parent e9c9d38
commit a4e3824
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 0 deletions.
diff --git a/compiler/src/dotty/tools/dotc/typer/Implicits.scala b/compiler/src/dotty/tools/dotc/typer/Implicits.scala
@@ -926,6 +926,8 @@ trait Implicits:
           apply(t.widen)
         case t: RefinedType =>
           apply(t.parent)
+        case t: LazyRef =>
+          t
         case _ =>
           if (variance > 0) mapOver(t) else t
       }

diff --git a/tests/pos/i10900.scala b/tests/pos/i10900.scala
@@ -0,0 +1,3 @@
+import scala.collection.IterableOps
+def foo[CC[A] <: IterableOps[A, CC, CC[A]], A](collection: CC[A]) =
+  collection == collection