mirror of
https://github.com/golang/go
synced 2024-11-26 20:31:25 -07:00
df9f4f14b9
Reusing it when multiple comparisons occurred in the same function call led to bad overwriting. Fixes #5162. R=golang-dev, daniel.morsing CC=golang-dev https://golang.org/cl/8174047
89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
// runoutput
|
|
|
|
// 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 5162: bad array equality when multiple comparisons
|
|
// happen in the same expression.
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
)
|
|
|
|
const template = `
|
|
func CheckEqNNN_TTT() {
|
|
onesA := [NNN]ttt{ONES}
|
|
onesB := [NNN]ttt{ONES}
|
|
twos := [NNN]ttt{TWOS}
|
|
if onesA != onesB {
|
|
println("onesA != onesB in CheckEqNNN_TTT")
|
|
}
|
|
if onesA == twos {
|
|
println("onesA == twos in CheckEqNNN_TTT")
|
|
}
|
|
if onesB == twos {
|
|
println("onesB == twos in CheckEqNNN_TTT")
|
|
}
|
|
if s := fmt.Sprint(onesA == onesB, onesA != twos, onesB != twos); s != "true true true" {
|
|
println("fail in CheckEqNNN_TTT:", s)
|
|
}
|
|
}
|
|
|
|
func CheckEqNNN_TTTExtraVar() {
|
|
onesA := [NNN]ttt{ONES}
|
|
onesB := [NNN]ttt{ONES}
|
|
twos := [NNN]ttt{TWOS}
|
|
onesX := onesA
|
|
if onesA != onesB {
|
|
println("onesA != onesB in CheckEqNNN_TTTExtraVar")
|
|
}
|
|
if onesA == twos {
|
|
println("onesA == twos in CheckEqNNN_TTTExtraVar")
|
|
}
|
|
if onesB == twos {
|
|
println("onesB == twos in CheckEqNNN_TTTExtraVar")
|
|
}
|
|
if s := fmt.Sprint(onesA == onesB, onesA != twos, onesB != twos); s != "true true true" {
|
|
println("fail in CheckEqNNN_TTTExtraVar:", s)
|
|
}
|
|
if s := fmt.Sprint(onesB == onesX); s != "true" {
|
|
println("extra var fail in CheckEqNNN_TTTExtraVar")
|
|
}
|
|
}
|
|
`
|
|
|
|
func main() {
|
|
fmt.Print("// run\n\n")
|
|
fmt.Print("// THIS FILE IS AUTO-GENERATED\n\n")
|
|
fmt.Print("package main\n\n")
|
|
fmt.Println(`import "fmt"`)
|
|
|
|
types := []string{
|
|
"int", "int8", "int16", "int32", "int64",
|
|
"uint", "uint8", "uint16", "uint32", "uint64",
|
|
"float32", "float64"}
|
|
tocall := make([]string, 0, 32*len(types))
|
|
for i := 1; i <= 32; i++ {
|
|
for _, typ := range types {
|
|
src := template
|
|
src = strings.Replace(src, "NNN", fmt.Sprint(i), -1)
|
|
src = strings.Replace(src, "TTT", strings.Title(typ), -1)
|
|
src = strings.Replace(src, "ttt", typ, -1)
|
|
src = strings.Replace(src, "ONES", "1"+strings.Repeat(", 1", i-1), -1)
|
|
src = strings.Replace(src, "TWOS", "2"+strings.Repeat(", 2", i-1), -1)
|
|
fmt.Print(src)
|
|
tocall = append(tocall, fmt.Sprintf("CheckEq%d_%s", i, strings.Title(typ)))
|
|
}
|
|
}
|
|
fmt.Println("func main() {")
|
|
for _, fun := range tocall {
|
|
fmt.Printf("\t%s()\n", fun)
|
|
fmt.Printf("\t%sExtraVar()\n", fun)
|
|
}
|
|
fmt.Println("}")
|
|
}
|