Allow hk parameters in lower bounds

2 files changed, 0 insertions, 13 deletions

diff --git a/src/dotty/tools/dotc/typer/Checking.scala b/src/dotty/tools/dotc/typer/Checking.scala
index b37216e6e..9e55216c1 100644
--- a/src/dotty/tools/dotc/typer/Checking.scala
+++ b/src/dotty/tools/dotc/typer/Checking.scala
@@ -534,17 +534,6 @@ trait Checking {
       errorTree(tpt, d"missing type parameter for ${tpt.tpe}")
     }
     else tpt
-
-  def checkLowerNotHK(sym: Symbol, tparams: List[Symbol], pos: Position)(implicit ctx: Context) =
-    if (tparams.nonEmpty)
-      sym.info match {
-        case info: TypeAlias => // ok
-        case TypeBounds(lo, _) =>
-          for (tparam <- tparams)
-            if (tparam.typeRef.occursIn(lo))
-              ctx.error(i"type parameter ${tparam.name} may not occur in lower bound $lo", pos)
-        case _ =>
-      }
 }
 
 trait NoChecking extends Checking {
@@ -558,5 +547,4 @@ trait NoChecking extends Checking {
   override def checkNoDoubleDefs(cls: Symbol)(implicit ctx: Context): Unit = ()
   override def checkParentCall(call: Tree, caller: ClassSymbol)(implicit ctx: Context) = ()
   override def checkSimpleKinded(tpt: Tree)(implicit ctx: Context): Tree = tpt
-  override def checkLowerNotHK(sym: Symbol, tparams: List[Symbol], pos: Position)(implicit ctx: Context) = ()
 }
diff --git a/src/dotty/tools/dotc/typer/Typer.scala b/src/dotty/tools/dotc/typer/Typer.scala
index 62d356e3d..4e2842da7 100644
--- a/src/dotty/tools/dotc/typer/Typer.scala
+++ b/src/dotty/tools/dotc/typer/Typer.scala
@@ -1064,7 +1064,6 @@ class Typer extends Namer with TypeAssigner with Applications with Implicits wit
 
   def typedTypeDef(tdef: untpd.TypeDef, sym: Symbol)(implicit ctx: Context): Tree = track("typedTypeDef") {
     val TypeDef(name, rhs) = tdef
-    checkLowerNotHK(sym, tdef.tparams.map(symbolOfTree), tdef.pos)
     completeAnnotations(tdef, sym)
     assignType(cpy.TypeDef(tdef)(name, typedType(rhs), Nil), sym)
   }