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go/test/fixedbugs/issue5162.go

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// 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("}")
}