mirror of
https://github.com/golang/go
synced 2024-11-15 03:30:37 -07:00
13514d4e0b
Most already had comments (yay); adjusted for consistency. R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5676102
75 lines
1.4 KiB
Go
75 lines
1.4 KiB
Go
// run
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test big vs. small, pointer vs. value interface methods.
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package main
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type I interface { M() int64 }
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type BigPtr struct { a, b, c, d int64 }
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func (z *BigPtr) M() int64 { return z.a+z.b+z.c+z.d }
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type SmallPtr struct { a int32 }
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func (z *SmallPtr) M() int64 { return int64(z.a) }
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type IntPtr int32
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func (z *IntPtr) M() int64 { return int64(*z) }
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var bad bool
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func test(name string, i I) {
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m := i.M()
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if m != 12345 {
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println(name, m)
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bad = true
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}
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}
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func ptrs() {
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var bigptr BigPtr = BigPtr{ 10000, 2000, 300, 45 }
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var smallptr SmallPtr = SmallPtr{ 12345 }
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var intptr IntPtr = 12345
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// test("bigptr", bigptr)
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test("&bigptr", &bigptr)
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// test("smallptr", smallptr)
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test("&smallptr", &smallptr)
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// test("intptr", intptr)
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test("&intptr", &intptr)
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}
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type Big struct { a, b, c, d int64 }
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func (z Big) M() int64 { return z.a+z.b+z.c+z.d }
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type Small struct { a int32 }
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func (z Small) M() int64 { return int64(z.a) }
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type Int int32
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func (z Int) M() int64 { return int64(z) }
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func nonptrs() {
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var big Big = Big{ 10000, 2000, 300, 45 }
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var small Small = Small{ 12345 }
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var int Int = 12345
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test("big", big)
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test("&big", &big)
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test("small", small)
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test("&small", &small)
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test("int", int)
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test("&int", &int)
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}
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func main() {
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ptrs()
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nonptrs()
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if bad {
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println("BUG: interface4")
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}
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}
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