go source for verification 2026-05-22

test/fixedbugs/issue22822.go

@@ -0,0 +1,19 @@
+// errorcheck
+
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Check that calling a function shadowing a built-in provides a good
+// error message.
+
+package main
+
+func F() {
+	slice := []int{1, 2, 3}
+	_ = slice
+	len := int(2)
+	println(len(slice)) // ERROR "cannot call non-function len .type int., declared at LINE-1|expected function|cannot call len"
+	const iota = 1
+	println(iota(slice)) // ERROR "cannot call non-function iota .type int., declared at LINE-1|expected function|cannot call iota"
+}