mirror of
https://github.com/golang/go
synced 2024-11-14 22:50:27 -07:00
af0fc83985
This adds 8 bytes of binary size to every type that has methods. It is the smallest change I could come up with for 1.7. Fixes #16037 Change-Id: Ibe15c3165854a21768596967757864b880dbfeed Reviewed-on: https://go-review.googlesource.com/24070 Reviewed-by: Keith Randall <khr@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
71 lines
1.3 KiB
Go
71 lines
1.3 KiB
Go
// +build !nacl,!android
|
|
// run
|
|
|
|
// Copyright 2016 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.
|
|
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"html/template"
|
|
"io/ioutil"
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
)
|
|
|
|
var tmpl = template.Must(template.New("main").Parse(`
|
|
package main
|
|
|
|
type T struct {
|
|
{{range .Names}}
|
|
{{.Name}} *string
|
|
{{end}}
|
|
}
|
|
|
|
{{range .Names}}
|
|
func (t *T) Get{{.Name}}() string {
|
|
if t.{{.Name}} == nil {
|
|
return ""
|
|
}
|
|
return *t.{{.Name}}
|
|
}
|
|
{{end}}
|
|
|
|
func main() {}
|
|
`))
|
|
|
|
func main() {
|
|
const n = 5000
|
|
|
|
type Name struct{ Name string }
|
|
var t struct{ Names []Name }
|
|
for i := 0; i < n; i++ {
|
|
t.Names = append(t.Names, Name{Name: fmt.Sprintf("H%06X", i)})
|
|
}
|
|
|
|
buf := new(bytes.Buffer)
|
|
if err := tmpl.Execute(buf, t); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
dir, err := ioutil.TempDir("", "issue16037-")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
path := filepath.Join(dir, "ridiculous_number_of_fields.go")
|
|
if err := ioutil.WriteFile(path, buf.Bytes(), 0664); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
out, err := exec.Command("go", "build", "-o="+filepath.Join(dir, "out"), path).CombinedOutput()
|
|
if err != nil {
|
|
log.Fatalf("build failed: %v\n%s", err, out)
|
|
}
|
|
}
|