go bug286 源码
golang bug286 代码
文件路径：/test/fixedbugs/bug286.go
// run
// 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 case for issue 849.
package main
type I interface {
f()
}
var callee string
var error_ bool
type T int
func (t *T) f() { callee = "f" }
func (i *T) g() { callee = "g" }
// test1 and test2 are the same except that in the interface J
// the entries are swapped. test2 and test3 are the same except
// that in test3 the interface J is declared outside the function.
//
// Error: test2 calls g instead of f
func test1(x I) {
type J interface {
I
g()
}
x.(J).f()
if callee != "f" {
println("test1 called", callee)
error_ = true
}
}
func test2(x I) {
type J interface {
g()
I
}
x.(J).f()
if callee != "f" {
println("test2 called", callee)
error_ = true
}
}
type J interface {
g()
I
}
func test3(x I) {
x.(J).f()
if callee != "f" {
println("test3 called", callee)
error_ = true
}
}
func main() {
x := new(T)
test1(x)
test2(x)
test3(x)
if error_ {
panic("wrong method called")
}
}
/*
6g bug286.go && 6l bug286.6 && 6.out
test2 called g
panic: wrong method called
panic PC=0x24e040
runtime.panic+0x7c /home/gri/go1/src/pkg/runtime/proc.c:1012
runtime.panic(0x0, 0x24e0a0)
main.main+0xef /home/gri/go1/test/bugs/bug286.go:76
main.main()
mainstart+0xf /home/gri/go1/src/pkg/runtime/amd64/asm.s:60
mainstart()
goexit /home/gri/go1/src/pkg/runtime/proc.c:145
goexit()
*/
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