mirror of
https://github.com/golang/go
synced 2024-11-13 17:50:23 -07:00
53fd522c0d
Follows suit with https://go-review.googlesource.com/#/c/20111. Generated by running $ grep -R 'Go Authors. All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go Authors. All/Go Authors. All/g' $F;done The code in cmd/internal/unvendor wasn't changed. Fixes #15213 Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f Reviewed-on: https://go-review.googlesource.com/21819 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
152 lines
2.5 KiB
Go
152 lines
2.5 KiB
Go
// run
|
|
|
|
// Copyright 2013 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.
|
|
|
|
// Issue 4585: comparisons and hashes process blank
|
|
// fields and padding in structs.
|
|
|
|
package main
|
|
|
|
import "unsafe"
|
|
|
|
// T is a structure with padding.
|
|
type T struct {
|
|
A int16
|
|
B int64
|
|
C int16
|
|
D int64
|
|
Dummy [64]byte
|
|
}
|
|
|
|
// U is a structure with a blank field
|
|
type U struct {
|
|
A, _, B int
|
|
Dummy [64]byte
|
|
}
|
|
|
|
// USmall is like U but the frontend will inline comparison
|
|
// instead of calling the generated eq function.
|
|
type USmall struct {
|
|
A, _, B int32
|
|
}
|
|
|
|
// V has padding but not on the first field.
|
|
type V struct {
|
|
A1, A2, A3 int32
|
|
B int16
|
|
C int32
|
|
}
|
|
|
|
// W has padding at the end.
|
|
type W struct {
|
|
A1, A2, A3 int32
|
|
B int32
|
|
C int8
|
|
}
|
|
|
|
func test1() {
|
|
var a, b U
|
|
m := make(map[U]int)
|
|
copy((*[16]byte)(unsafe.Pointer(&a))[:], "hello world!")
|
|
a.A, a.B = 1, 2
|
|
b.A, b.B = 1, 2
|
|
if a != b {
|
|
panic("broken equality: a != b")
|
|
}
|
|
|
|
m[a] = 1
|
|
m[b] = 2
|
|
if len(m) == 2 {
|
|
panic("broken hash: len(m) == 2")
|
|
}
|
|
if m[a] != 2 {
|
|
panic("m[a] != 2")
|
|
}
|
|
}
|
|
|
|
func test2() {
|
|
var a, b T
|
|
m := make(map[T]int)
|
|
|
|
copy((*[16]byte)(unsafe.Pointer(&a))[:], "hello world!")
|
|
a.A, a.B, a.C, a.D = 1, 2, 3, 4
|
|
b.A, b.B, b.C, b.D = 1, 2, 3, 4
|
|
|
|
if a != b {
|
|
panic("broken equality: a != b")
|
|
}
|
|
|
|
m[a] = 1
|
|
m[b] = 2
|
|
if len(m) == 2 {
|
|
panic("broken hash: len(m) == 2")
|
|
}
|
|
if m[a] != 2 {
|
|
panic("m[a] != 2")
|
|
}
|
|
}
|
|
|
|
func test3() {
|
|
var a, b USmall
|
|
copy((*[12]byte)(unsafe.Pointer(&a))[:], "hello world!")
|
|
a.A, a.B = 1, 2
|
|
b.A, b.B = 1, 2
|
|
if a != b {
|
|
panic("broken equality: a != b")
|
|
}
|
|
}
|
|
|
|
func test4() {
|
|
var a, b V
|
|
m := make(map[V]int)
|
|
|
|
copy((*[20]byte)(unsafe.Pointer(&a))[:], "Hello World, Gopher!")
|
|
a.A1, a.A2, a.A3, a.B, a.C = 1, 2, 3, 4, 5
|
|
b.A1, b.A2, b.A3, b.B, b.C = 1, 2, 3, 4, 5
|
|
|
|
if a != b {
|
|
panic("broken equality: a != b")
|
|
}
|
|
|
|
m[a] = 1
|
|
m[b] = 2
|
|
if len(m) == 2 {
|
|
panic("broken hash: len(m) == 2")
|
|
}
|
|
if m[a] != 2 {
|
|
panic("m[a] != 2")
|
|
}
|
|
}
|
|
|
|
func test5() {
|
|
var a, b W
|
|
m := make(map[W]int)
|
|
|
|
copy((*[20]byte)(unsafe.Pointer(&a))[:], "Hello World, Gopher!")
|
|
a.A1, a.A2, a.A3, a.B, a.C = 1, 2, 3, 4, 5
|
|
b.A1, b.A2, b.A3, b.B, b.C = 1, 2, 3, 4, 5
|
|
|
|
if a != b {
|
|
panic("broken equality: a != b")
|
|
}
|
|
|
|
m[a] = 1
|
|
m[b] = 2
|
|
if len(m) == 2 {
|
|
panic("broken hash: len(m) == 2")
|
|
}
|
|
if m[a] != 2 {
|
|
panic("m[a] != 2")
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
test1()
|
|
test2()
|
|
test3()
|
|
test4()
|
|
test5()
|
|
}
|