Merge pull request scala#11793 from sirthias/master

liufengyun · web-flow · commit 75f7cb34d1af · 2021-03-22T14:21:49.000+01:00
Fix scala#11792 (Tuple.fromProduct doesn't handle Product0)
diff --git a/library/src/scala/runtime/Tuples.scala b/library/src/scala/runtime/Tuples.scala
@@ -58,6 +58,7 @@ object Tuples {
     else TupleXXL.fromIArray(xs).asInstanceOf[Tuple]
 
   def fromProduct(xs: Product): Tuple = (xs.productArity match {
+    case 0  => EmptyTuple
     case 1 =>
       xs match {
         case xs: Tuple1[_] => xs
diff --git a/tests/run/i11793.scala b/tests/run/i11793.scala
@@ -0,0 +1,2 @@
+case class Foo()
+@main def Test: Unit = Tuple.fromProduct(Foo())

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+case class Foo()`
	`2`	`+@main def Test: Unit = Tuple.fromProduct(Foo())`