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// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG: bug285

// Copyright 2010 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 for issue 778: Map key values that are assignment

// compatible with the map key type must be accepted according

// to the spec: http://golang.org/doc/go_spec.html#Indexes .

package main

type T2 struct {

        x int

}

func (t *T2) f() int { return t.x }

func main() {

        type B bool

        b := B(false)

        mb := make(map[B]int)

        mb[false] = 42 // this should work: false is assignment compatible with B

        mb[b] = 42

        type Z int

        z := Z(0)

        mz := make(map[Z]int)

        mz[0] = 42

        mz[z] = 42

        type S string

        s := S("foo")

        ms := make(map[S]int)

        ms["foo"] = 42

        ms[s] = 42

        type T struct {

                x int

        }

        type P *T

        p := P(nil)

        mp := make(map[P]int)

        mp[nil] = 42

        mp[p] = 42

        mp[&T{7}] = 42

        type C chan int

        c := make(C)

        mc := make(map[C]int)

        mc[nil] = 42

        mc[c] = 42

        mc[make(C)] = 42

        type I1 interface{}

        type I2 interface {

                f() int

        }

        var i0 interface{} = z

        var i1 I1 = p

        m0 := make(map[interface{}]int)

        m1 := make(map[I1]int)

        m2 := make(map[I2]int)

        m0[i0] = 42

        m0[i1] = 42

        m0[z] = 42 // this should work: z is assignment-compatible with interface{}

        m0[new(struct {

                x int

        })] = 42       // this should work: *struct{x int} is assignment-compatible with interface{}

        m0[p] = 42     // this should work: p is assignment-compatible with interface{}

        m0[false] = 42 // this should work: false is assignment-compatible with interface{}

        m0[17] = 42    // this should work: 17 is assignment-compatible with interface{}

        m0["foo"] = 42 // this should work: "foo" is assignment-compatible with interface{}

        m1[i0] = 42

        m1[i1] = 42

        m1[new(struct {

                x int

        })] = 42       // this should work: *struct{x int} is assignment-compatible with I1

        m1[false] = 42 // this should work: false is assignment-compatible with I1

        m1[17] = 42    // this should work: 17 is assignment-compatible with I1

        m1["foo"] = 42 // this should work: "foo" is assignment-compatible with I1

        m2[new(T2)] = 42 // this should work: *T2 is assignment-compatible with I2

}

/*

6g -e bug286.go

bug286.go:23: invalid map index false - need type B

bug286.go:80: invalid map index z - need type interface { }

bug286.go:83: invalid map index new(struct { x int }) - need type interface { }

bug286.go:84: invalid map index p - need type interface { }

bug286.go:85: invalid map index false - need type interface { }

bug286.go:86: invalid map index 17 - need type interface { }

bug286.go:87: invalid map index "foo" - need type interface { }

bug286.go:93: invalid map index new(struct { x int }) - need type I1

bug286.go:94: invalid map index false - need type I1

bug286.go:95: invalid map index 17 - need type I1

bug286.go:96: invalid map index "foo" - need type I1

bug286.go:99: invalid map index new(T2) - need type I2

bug286.go:100: invalid map index t2 - need type I2

*/