go source for verification 2026-05-22

test/fixedbugs/issue17645.go

@@ -0,0 +1,16 @@
+// errorcheck
+
+// Copyright 2016 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.
+
+package main
+
+type Foo struct {
+	X int
+}
+
+func main() {
+	var s []int
+	var _ string = append(s, Foo{""}) // ERROR "cannot use append\(s, Foo{…}\) .* as string value in variable declaration" "cannot use Foo{…} .* as int value in argument to append" "cannot use .* as int value in struct literal"
+}