mirror of
https://github.com/golang/go
synced 2024-11-14 06:10:24 -07:00
fc0dc04095
Very few of the compiler regression tests include a comment saying waht they do. Many are obvious, some are anything but. I've started with a-c in the top directory. More will follow once we agree on the approach, correctness, and thoroughness here. zerodivide.go sneaked in too. R=rsc, r CC=golang-dev https://golang.org/cl/5656100
47 lines
833 B
Go
47 lines
833 B
Go
// run
|
|
|
|
// Copyright 2009 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 types of constant expressions, using reflect.
|
|
|
|
package main
|
|
|
|
import "reflect"
|
|
|
|
func typeof(x interface{}) string { return reflect.TypeOf(x).String() }
|
|
|
|
func f() int { return 0 }
|
|
|
|
func g() int { return 0 }
|
|
|
|
type T func() int
|
|
|
|
var m = map[string]T{"f": f}
|
|
|
|
type A int
|
|
type B int
|
|
|
|
var a A = 1
|
|
var b B = 2
|
|
var x int
|
|
|
|
func main() {
|
|
want := typeof(g)
|
|
if t := typeof(f); t != want {
|
|
println("type of f is", t, "want", want)
|
|
panic("fail")
|
|
}
|
|
|
|
want = typeof(a)
|
|
if t := typeof(+a); t != want {
|
|
println("type of +a is", t, "want", want)
|
|
panic("fail")
|
|
}
|
|
if t := typeof(a + 0); t != want {
|
|
println("type of a+0 is", t, "want", want)
|
|
panic("fail")
|
|
}
|
|
}
|