Fix #10116: Fix adaptConstant to that it survives Ycheck

Author: odersky

compiler/src/dotty/tools/dotc/typer/Typer.scala

@@ -3425,7 +3425,7 @@ class Typer extends Namer
       // try converting a constant to the target type
       val folded = ConstFold(tree, pt)
       if (folded ne tree)
-        return adaptConstant(folded, folded.tpe.asInstanceOf[ConstantType])
+        return adaptConstant(tree, folded.tpe.asInstanceOf[ConstantType])
 
       val captured = captureWildcards(wtp)
       if (captured `ne` wtp)

tests/pos/i10116.scala

@@ -0,0 +1,18 @@
+object OverloadedWithLong {
+  def overloaded(x: Long): Any =
+    x
+
+  def overloaded(x: Any): Unit =
+    ???
+}
+
+object Test {
+  def main(args: Array[String]): Unit =
+    import OverloadedWithLong._
+
+    val l: Any = 0 :: Nil
+    val r = overloaded(l match {
+      case x :: xs => 5
+    })
+    assert(r == 5L)
+}