go undef 源码
golang undef 代码
文件路径：/test/undef.go
// errorcheck
// Copyright 2010 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 line numbers in error messages.
// Does not compile.
package main
var (
_ = x // ERROR "undefined.*x"
_ = x // ERROR "undefined.*x"
_ = x // ERROR "undefined.*x"
)
type T struct {
y int
}
func foo() *T { return &T{y: 99} }
func bar() int { return y } // ERROR "undefined.*y"
type T1 struct {
y1 int
}
func foo1() *T1 { return &T1{y1: 99} }
var y1 = 2
func bar1() int { return y1 }
func f1(val interface{}) {
switch v := val.(type) {
default:
println(v)
}
}
func f2(val interface{}) {
switch val.(type) {
default:
println(v) // ERROR "undefined.*v"
}
}
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