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// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG indirect

// 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.

package main

var m0 map[string]int
var m1 *map[string]int
var m2 *map[string]int = &m0
var m3 map[string]int = map[string]int{"a": 1}
var m4 *map[string]int = &m3

var s0 string
var s1 *string
var s2 *string = &s0
var s3 string = "a"
var s4 *string = &s3

var a0 [10]int
var a1 *[10]int
var a2 *[10]int = &a0

var b0 []int
var b1 *[]int
var b2 *[]int = &b0
var b3 []int = []int{1, 2, 3}
var b4 *[]int = &b3

func crash() {
        // these uses of nil pointers
        // would crash but should type check
        println("crash",
                len(a1)+cap(a1))
}

func nocrash() {
        // this is spaced funny so that
        // the compiler will print a different
        // line number for each len call if
        // it decides there are type errors.
        // it might also help in the traceback.
        x :=
                len(m0) +
                        len(m3)
        if x != 1 {
                println("wrong maplen")
                panic("fail")
        }

        x =
                len(s0) +
                        len(s3)
        if x != 1 {
                println("wrong stringlen")
                panic("fail")
        }

        x =
                len(a0) +
                        len(a2)
        if x != 20 {
                println("wrong arraylen")
                panic("fail")
        }

        x =
                len(b0) +
                        len(b3)
        if x != 3 {
                println("wrong slicelen")
                panic("fail")
        }

        x =
                cap(b0) +
                        cap(b3)
        if x != 3 {
                println("wrong slicecap")
                panic("fail")
        }
}

func main() { nocrash() }