| // run |
| |
| // Copyright 2011 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 len constants and non-constants, http://golang.org/issue/3244. |
| |
| package main |
| |
| var b struct { |
| a[10]int |
| } |
| |
| var m map[string][20]int |
| |
| var s [][30]int |
| |
| const ( |
| n1 = len(b.a) |
| n2 = len(m[""]) |
| n3 = len(s[10]) |
| ) |
| |
| // Non-constants (see also const5.go). |
| var ( |
| n4 = len(f()) |
| n5 = len(<-c) |
| n6 = cap(g()) |
| n7 = cap(<-c1) |
| ) |
| |
| var calledF = false |
| |
| func f() *[40]int { |
| calledF = true |
| return nil |
| } |
| |
| var c = func() chan *[50]int { |
| c := make(chan *[50]int, 2) |
| c <- nil |
| c <- new([50]int) |
| return c |
| }() |
| |
| var calledG = false |
| |
| func g() *[60]int { |
| calledG = true |
| return nil |
| } |
| |
| var c1 = func() chan *[70]int { |
| c := make(chan *[70]int, 2) |
| c <- nil |
| c <- new([70]int) |
| return c |
| }() |
| |
| func main() { |
| if n1 != 10 || n2 != 20 || n3 != 30 || n4 != 40 || n5 != 50 || n6 != 60 || n7 != 70 { |
| println("BUG:", n1, n2, n3, n4, n5, n6, n7) |
| } |
| if !calledF { |
| println("BUG: did not call f") |
| } |
| if <-c == nil { |
| println("BUG: did not receive from c") |
| } |
| if !calledG { |
| println("BUG: did not call g") |
| } |
| if <-c1 == nil { |
| println("BUG: did not receive from c1") |
| } |
| } |