| // errorcheck |
| |
| // Copyright 2012 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 3890: missing detection of init cycle involving |
| // method calls in function bodies. |
| |
| package flag |
| |
| var commandLine = NewFlagSet() // ERROR "initialization cycle|depends upon itself" |
| |
| type FlagSet struct { |
| } |
| |
| func (f *FlagSet) failf(format string, a ...interface{}) { |
| f.usage() |
| } |
| |
| func (f *FlagSet) usage() { |
| if f == commandLine { |
| panic(3) |
| } |
| } |
| |
| func NewFlagSet() *FlagSet { |
| f := &FlagSet{} |
| f.setErrorHandling(true) |
| return f |
| } |
| |
| func (f *FlagSet) setErrorHandling(b bool) { |
| f.failf("DIE") |
| } |
