github.com/mattn/go@v0.0.0-20171011075504-07f7db3ea99f/test/fixedbugs/issue13779.go (about)

     1  // errorcheck
     2  
     3  // Copyright 2016 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  // Issue 13779: provide better error message when directly assigning to struct field in map
     8  
     9  package main
    10  
    11  func main() {
    12  	type person struct{ age, weight, height int }
    13  	students := map[string]person{"sally": person{12, 50, 32}}
    14  	students["sally"].age = 3 // ERROR "cannot assign to struct field .* in map"
    15  }