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bug284: make conversion legal, fix error patterns

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R=gri
CC=golang-dev
https://golang.org/cl/1612041
This commit is contained in:
Russ Cox 2010-06-08 15:51:31 -07:00
parent 2ec58f73e3
commit 57a62a8bcb
1 changed files with 10 additions and 6 deletions
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16
test/bugs/bug284.go
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@ -1,4 +1,4 @@
// errchk $G $D/$F.go // errchk $G -e $D/$F.go
// Copyright 2010 The Go Authors. All rights reserved. // Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style // Use of this source code is governed by a BSD-style
@ -85,11 +85,15 @@ func main() {
} }
var q1 Q1 var q1 Q1
var q2 Q2 var q2 Q2
var ps1 *S1
q0 = q0 q0 = q0
q0 = q1 q0 = q1
q0 = (*struct { q0 = (*struct {
x int x int
})(q2) // legal because of special conversion exception for pointers })(ps1) // legal because of special conversion exception for pointers
q0 = (*struct {
x int
})(q2) // ERROR "cannot"
q1 = q0 q1 = q0
q1 = q1 q1 = q1
q1 = Q1(q2) // ERROR "cannot" q1 = Q1(q2) // ERROR "cannot"
@ -127,12 +131,12 @@ func main() {
x0 = x1 x0 = x1
x0 = interface { x0 = interface {
f() int f() int
}(x2) // ERROR "cannot"|"need type assertion" }(x2) // ERROR "cannot|need type assertion"
x1 = x0 x1 = x0
x1 = x1 x1 = x1
x1 = X1(x2) // ERROR "cannot"|"need type assertion" x1 = X1(x2) // ERROR "cannot|need type assertion"
x2 = X2(x0) // ERROR "cannot"|"need type assertion" x2 = X2(x0) // ERROR "cannot|need type assertion"
x2 = X2(x1) // ERROR "cannot"|"need type assertion" x2 = X2(x1) // ERROR "cannot|need type assertion"
x2 = x2 x2 = x2
type L1 []int type L1 []int