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d4fb568e04
The spec is looser than the current implementation. The spec edit was made in CL 4444050 (May 2011) but I never implemented it. Fixes #3244. R=ken2 CC=golang-dev https://golang.org/cl/5785049
78 lines
1.2 KiB
Go
78 lines
1.2 KiB
Go
// run
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test len constants and non-constants, http://golang.org/issue/3244.
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package main
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var b struct {
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a[10]int
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}
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var m map[string][20]int
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var s [][30]int
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const (
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n1 = len(b.a)
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n2 = len(m[""])
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n3 = len(s[10])
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)
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// Non-constants (see also const5.go).
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var (
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n4 = len(f())
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n5 = len(<-c)
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n6 = cap(g())
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n7 = cap(<-c1)
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)
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var calledF = false
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func f() *[40]int {
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calledF = true
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return nil
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}
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var c = func() chan *[50]int {
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c := make(chan *[50]int, 2)
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c <- nil
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c <- new([50]int)
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return c
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}()
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var calledG = false
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func g() *[60]int {
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calledG = true
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return nil
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}
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var c1 = func() chan *[70]int {
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c := make(chan *[70]int, 2)
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c <- nil
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c <- new([70]int)
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return c
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}()
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func main() {
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if n1 != 10 || n2 != 20 || n3 != 30 || n4 != 40 || n5 != 50 || n6 != 60 || n7 != 70 {
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println("BUG:", n1, n2, n3, n4, n5, n6, n7)
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}
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if !calledF {
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println("BUG: did not call f")
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}
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if <-c == nil {
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println("BUG: did not receive from c")
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}
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if !calledG {
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println("BUG: did not call g")
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}
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if <-c1 == nil {
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println("BUG: did not receive from c1")
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}
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}
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