From b57cd71e54b23039e8439d4243e22647d77c2299 Mon Sep 17 00:00:00 2001
From: Mathias <mathias@decodified.com>
Date: Wed, 17 Mar 2021 15:55:12 +0100
Subject: [PATCH] Fix #11792 (Tuple.fromProduct doesn't handle Product0)

---
 library/src/scala/runtime/Tuples.scala | 1 +
 tests/run/i11793.scala                 | 2 ++
 2 files changed, 3 insertions(+)
 create mode 100644 tests/run/i11793.scala

diff --git a/library/src/scala/runtime/Tuples.scala b/library/src/scala/runtime/Tuples.scala
index 57b404e79d5c..267e04f65aed 100644
--- 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
new file mode 100644
index 000000000000..3a84d07fcaf2
--- /dev/null
+++ b/tests/run/i11793.scala
@@ -0,0 +1,2 @@
+case class Foo()
+@main def Test: Unit = Tuple.fromProduct(Foo())
\ No newline at end of file