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// errorcheck
// 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 cases for revised conversion rules.
package main
func main() {
type NewInt int
i0 := 0
var i1 int = 1
var i2 NewInt = 1
i0 = i0
i0 = i1
i0 = int(i2)
i1 = i0
i1 = i1
i1 = int(i2)
i2 = NewInt(i0)
i2 = NewInt(i1)
i2 = i2
type A1 [3]int
type A2 [3]NewInt
var a0 [3]int
var a1 A1
var a2 A2
a0 = a0
a0 = a1
a0 = [3]int(a2) // ERROR "cannot|invalid"
a1 = a0
a1 = a1
a1 = A1(a2) // ERROR "cannot|invalid"
a2 = A2(a0) // ERROR "cannot|invalid"
a2 = A2(a1) // ERROR "cannot|invalid"
a2 = a2
type S1 struct {
x int
}
type S2 struct {
x NewInt
}
var s0 struct {
x int
}
var s1 S1
var s2 S2
s0 = s0
s0 = s1
s0 = struct {
x int
}(s2) // ERROR "cannot|invalid"
s1 = s0
s1 = s1
s1 = S1(s2) // ERROR "cannot|invalid"
s2 = S2(s0) // ERROR "cannot|invalid"
s2 = S2(s1) // ERROR "cannot|invalid"
s2 = s2
type P1 *int
type P2 *NewInt
var p0 *int
var p1 P1
var p2 P2
p0 = p0
p0 = p1
p0 = (*int)(p2) // ERROR "cannot|invalid"
p1 = p0
p1 = p1
p1 = P1(p2) // ERROR "cannot|invalid"
p2 = P2(p0) // ERROR "cannot|invalid"
p2 = P2(p1) // ERROR "cannot|invalid"
p2 = p2
type Q1 *struct {
x int
}
type Q2 *S1
var q0 *struct {
x int
}
var q1 Q1
var q2 Q2
var ps1 *S1
q0 = q0
q0 = q1
q0 = (*struct {
x int
})(ps1) // legal because of special conversion exception for pointers
q0 = (*struct {
x int
})(q2) // ERROR "cannot|invalid"
q1 = q0
q1 = q1
q1 = Q1(q2) // ERROR "cannot|invalid"
q2 = (*S1)(q0) // legal because of special conversion exception for pointers
q2 = Q2(q1) // ERROR "cannot|invalid"
q2 = q2
type F1 func(x NewInt) int
type F2 func(x int) NewInt
var f0 func(x NewInt) int
var f1 F1
var f2 F2
f0 = f0
f0 = f1
f0 = func(x NewInt) int(f2) // ERROR "cannot|invalid"
f1 = f0
f1 = f1
f1 = F1(f2) // ERROR "cannot|invalid"
f2 = F2(f0) // ERROR "cannot|invalid"
f2 = F2(f1) // ERROR "cannot|invalid"
f2 = f2
type X1 interface {
f() int
}
type X2 interface {
f() NewInt
}
var x0 interface {
f() int
}
var x1 X1
var x2 X2
x0 = x0
x0 = x1
x0 = interface {
f() int
}(x2) // ERROR "cannot|need type assertion|incompatible"
x1 = x0
x1 = x1
x1 = X1(x2) // ERROR "cannot|need type assertion|incompatible"
x2 = X2(x0) // ERROR "cannot|need type assertion|incompatible"
x2 = X2(x1) // ERROR "cannot|need type assertion|incompatible"
x2 = x2
type L1 []int
type L2 []NewInt
var l0 []int
var l1 L1
var l2 L2
l0 = l0
l0 = l1
l0 = []int(l2) // ERROR "cannot|invalid"
l1 = l0
l1 = l1
l1 = L1(l2) // ERROR "cannot|invalid"
l2 = L2(l0) // ERROR "cannot|invalid"
l2 = L2(l1) // ERROR "cannot|invalid"
l2 = l2
type M1 map[string]int
type M2 map[string]NewInt
var m0 []int
var m1 L1
var m2 L2
m0 = m0
m0 = m1
m0 = []int(m2) // ERROR "cannot|invalid"
m1 = m0
m1 = m1
m1 = L1(m2) // ERROR "cannot|invalid"
m2 = L2(m0) // ERROR "cannot|invalid"
m2 = L2(m1) // ERROR "cannot|invalid"
m2 = m2
type C1 chan int
type C2 chan NewInt
var c0 chan int
var c1 C1
var c2 C2
c0 = c0
c0 = c1
c0 = chan int(c2) // ERROR "cannot|invalid"
c1 = c0
c1 = c1
c1 = C1(c2) // ERROR "cannot|invalid"
c2 = C2(c0) // ERROR "cannot|invalid"
c2 = C2(c1) // ERROR "cannot|invalid"
c2 = c2
// internal compiler error (6g and gccgo)
type T interface{}
var _ T = 17 // assignment compatible
_ = T(17) // internal compiler error even though assignment compatible
}