codekingpro/portable-devtools

1// run2 3// Copyright 2011 The Go Authors. All rights reserved.4// Use of this source code is governed by a BSD-style5// license that can be found in the LICENSE file.6 7// Test len constants and non-constants, https://golang.org/issue/3244.8 9package main10 11var b struct {12	a [10]int13}14 15var m map[string][20]int16 17var s [][30]int18 19const (20	n1 = len(b.a)21	n2 = len(m[""])22	n3 = len(s[10])23)24 25// Non-constants (see also const5.go).26var (27	n4 = len(f())28	n5 = len(<-c)29	n6 = cap(g())30	n7 = cap(<-c1)31)32 33var calledF = false34 35func f() *[40]int {36	calledF = true37	return nil38}39 40var c = func() chan *[50]int {41	c := make(chan *[50]int, 2)42	c <- nil43	c <- new([50]int)44	return c45}()46 47var calledG = false48 49func g() *[60]int {50	calledG = true51	return nil52}53 54var c1 = func() chan *[70]int {55	c := make(chan *[70]int, 2)56	c <- nil57	c <- new([70]int)58	return c59}()60 61func main() {62	if n1 != 10 || n2 != 20 || n3 != 30 || n4 != 40 || n5 != 50 || n6 != 60 || n7 != 70 {63		println("BUG:", n1, n2, n3, n4, n5, n6, n7)64		panic("fail")65	}66	if !calledF {67		println("BUG: did not call f")68		panic("fail")69	}70	if <-c == nil {71		println("BUG: did not receive from c")72		panic("fail")73	}74	if !calledG {75		println("BUG: did not call g")76		panic("fail")77	}78	if <-c1 == nil {79		println("BUG: did not receive from c1")80		panic("fail")81	}82}83