diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..77d7e7a
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module test
+
+go 1.21.0
diff --git a/x.go b/x.go
new file mode 100644
index 0000000..823aafd
--- /dev/null
+++ b/x.go
@@ -0,0 +1 @@
+package x