go source for verification 2026-05-22

test/fixedbugs/issue18231.go

@@ -0,0 +1,20 @@
+// 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.
+
+// Test that error message for composite literals with
+// missing type is at the right place.
+
+package p
+
+type T struct {
+	f map[string]string
+}
+
+var _ = T{
+	f: {                // ERROR "missing type in composite literal|may only omit types within"
+		"a": "b",
+	},
+}