Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/src/cmd/compile/internal/ssa/testdata/pushback.go b/src/cmd/compile/internal/ssa/testdata/pushback.go
new file mode 100644
index 0000000..754e6cb
--- /dev/null
+++ b/src/cmd/compile/internal/ssa/testdata/pushback.go
@@ -0,0 +1,30 @@
+package main
+
+type Node struct {
+	Circular bool
+}
+
+type ExtNode[V any] struct {
+	v V
+	Node
+}
+
+type List[V any] struct {
+	root *ExtNode[V]
+	len  int
+}
+
+func (list *List[V]) PushBack(arg V) {
+	if list.len == 0 {
+		list.root = &ExtNode[V]{v: arg}
+		list.root.Circular = true
+		list.len++
+		return
+	}
+	list.len++
+}
+
+func main() {
+	var v List[int]
+	v.PushBack(1)
+}