go source for verification 2026-05-22

test/fixedbugs/issue18915.go

@@ -0,0 +1,21 @@
+// 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 error message for invalid conditions
+// or tags are consistent with earlier Go versions.
+
+package p
+
+func _() {
+	if a := 10 { // ERROR "cannot use a := 10 as value|expected .*;|declared and not used"
+	}
+
+	for b := 10 { // ERROR "cannot use b := 10 as value|parse error|declared and not used"
+	}
+
+	switch c := 10 { // ERROR "cannot use c := 10 as value|expected .*;|declared and not used"
+	}
+}