mirror of
https://github.com/golang/go
synced 2024-11-25 13:38:00 -07:00
d2cc988429
X ,s;^// \$G (\$D/)?\$F\.go *$;// compile;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A *$;// build;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A && \./\$A\.out *$;// run;g X ,s;^// errchk \$G( -e)? (\$D/)?\$F\.go *$;// errorcheck;g R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5673079
76 lines
1.5 KiB
Go
76 lines
1.5 KiB
Go
// run
|
|
|
|
// 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.
|
|
|
|
// check that big vs small, pointer vs not
|
|
// interface methods work.
|
|
|
|
package main
|
|
|
|
type I interface { M() int64 }
|
|
|
|
type BigPtr struct { a, b, c, d int64 }
|
|
func (z *BigPtr) M() int64 { return z.a+z.b+z.c+z.d }
|
|
|
|
type SmallPtr struct { a int32 }
|
|
func (z *SmallPtr) M() int64 { return int64(z.a) }
|
|
|
|
type IntPtr int32
|
|
func (z *IntPtr) M() int64 { return int64(*z) }
|
|
|
|
var bad bool
|
|
|
|
func test(name string, i I) {
|
|
m := i.M()
|
|
if m != 12345 {
|
|
println(name, m)
|
|
bad = true
|
|
}
|
|
}
|
|
|
|
func ptrs() {
|
|
var bigptr BigPtr = BigPtr{ 10000, 2000, 300, 45 }
|
|
var smallptr SmallPtr = SmallPtr{ 12345 }
|
|
var intptr IntPtr = 12345
|
|
|
|
// test("bigptr", bigptr)
|
|
test("&bigptr", &bigptr)
|
|
// test("smallptr", smallptr)
|
|
test("&smallptr", &smallptr)
|
|
// test("intptr", intptr)
|
|
test("&intptr", &intptr)
|
|
}
|
|
|
|
type Big struct { a, b, c, d int64 }
|
|
func (z Big) M() int64 { return z.a+z.b+z.c+z.d }
|
|
|
|
type Small struct { a int32 }
|
|
func (z Small) M() int64 { return int64(z.a) }
|
|
|
|
type Int int32
|
|
func (z Int) M() int64 { return int64(z) }
|
|
|
|
func nonptrs() {
|
|
var big Big = Big{ 10000, 2000, 300, 45 }
|
|
var small Small = Small{ 12345 }
|
|
var int Int = 12345
|
|
|
|
test("big", big)
|
|
test("&big", &big)
|
|
test("small", small)
|
|
test("&small", &small)
|
|
test("int", int)
|
|
test("&int", &int)
|
|
}
|
|
|
|
func main() {
|
|
ptrs()
|
|
nonptrs()
|
|
|
|
if bad {
|
|
println("BUG: interface4")
|
|
}
|
|
}
|