Golang程序  |  14行  |  402 B

// errorcheck

// Copyright 2018 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 14988: declaring a map with an invalid key type should not cause a
//              fatal panic.

package main

var x map[func()]int // ERROR "invalid map key type"
var X map[func()]int // ERROR "invalid map key type"