1 files changed, 15 insertions, 0 deletions
diff --git a/test/fixedbugs/issue13779.go b/test/fixedbugs/issue13779.go
new file mode 100644
index 0000000..b18577c
--- /dev/null
+++ b/test/fixedbugs/issue13779.go
@@ -0,0 +1,15 @@
+// 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.
+
+// Issue 13779: provide better error message when directly assigning to struct field in map
+
+package main
+
+func main() {
+	type person struct{ age, weight, height int }
+	students := map[string]person{"sally": person{12, 50, 32}}
+	students["sally"].age = 3 // ERROR "cannot assign to struct field .* in map"
+}