mirror of
https://github.com/golang/go
synced 2024-11-27 00:21:21 -07:00
33 lines
712 B
Go
33 lines
712 B
Go
|
// run
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"reflect"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Copyright 2019 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.
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
defer func() {
|
||
|
|
e := recover()
|
||
|
|
if e == nil {
|
||
|
|
panic("should have panicked")
|
||
|
|
}
|
||
|
|
text := fmt.Sprintf("%s", e) // handles both string and runtime.errorString
|
||
|
|
if !strings.HasPrefix(text, "reflect:") {
|
||
|
|
panic("wanted a reflect error, got this instead:\n" + text)
|
||
|
|
}
|
||
|
|
}()
|
||
|
|
r := reflect.MakeFunc(reflect.TypeOf(func() error { return nil }),
|
||
|
|
func(args []reflect.Value) []reflect.Value {
|
||
|
|
var x [1]reflect.Value
|
||
|
|
return x[:]
|
||
|
|
}).Interface().(func() error)
|
||
|
|
r()
|
||
|
|
}
|