|  | // 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. | 
|  |  | 
|  | // Compiler rejected initialization of structs to composite literals | 
|  | // in a non-static setting (e.g. in a function) | 
|  | // when the struct contained a field named _. | 
|  |  | 
|  | package p | 
|  |  | 
|  | type T struct { | 
|  | _ string | 
|  | } | 
|  |  | 
|  | func ok() { | 
|  | var x = T{"check"} | 
|  | _ = x | 
|  | _ = T{"et"} | 
|  | } | 
|  |  | 
|  | var ( | 
|  | y = T{"stare"} | 
|  | w = T{_: "look"} // ERROR "invalid field name _ in struct initializer" | 
|  | _ = T{"page"} | 
|  | _ = T{_: "out"} // ERROR "invalid field name _ in struct initializer" | 
|  | ) | 
|  |  | 
|  | func bad() { | 
|  | var z = T{_: "verse"} // ERROR "invalid field name _ in struct initializer" | 
|  | _ = z | 
|  | _ = T{_: "itinerary"} // ERROR "invalid field name _ in struct initializer" | 
|  | } |