go source for verification 2026-05-22

test/fixedbugs/issue20415.go

@@ -0,0 +1,33 @@
+// errorcheck
+
+// Copyright 2017 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.
+
+// Make sure redeclaration errors report correct position.
+
+package p
+
+// 1
+var f byte
+
+var f interface{} // ERROR "issue20415.go:12: previous declaration|redefinition|f redeclared"
+
+func _(f int) {
+}
+
+// 2
+var g byte
+
+func _(g int) {
+}
+
+var g interface{} // ERROR "issue20415.go:20: previous declaration|redefinition|g redeclared"
+
+// 3
+func _(h int) {
+}
+
+var h byte
+
+var h interface{} // ERROR "issue20415.go:31: previous declaration|redefinition|h redeclared"