mirror of
https://github.com/golang/go
synced 2024-11-23 12:50:12 -07:00
70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
// runoutput
|
|
|
|
// Copyright 2012 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 3866
|
|
// runtime.equal failed to take padding between arguments and
|
|
// return values into account, so in certain cases gc-generated
|
|
// code will read a random bool from the stack as the result of
|
|
// the comparison.
|
|
// This program generates a lot of equality tests and hopes to
|
|
// catch this.
|
|
// NOTE: this program assumes comparing instance of T and T's
|
|
// underlying []byte will make gc emit calls to runtime.equal,
|
|
// and if gc optimizes this case, then the test will no longer
|
|
// be correct (in the sense that it no longer tests runtime.equal).
|
|
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
const ntest = 1024
|
|
|
|
func main() {
|
|
var decls, calls bytes.Buffer
|
|
|
|
for i := 1; i <= ntest; i++ {
|
|
s := strconv.Itoa(i)
|
|
decls.WriteString(strings.Replace(decl, "$", s, -1))
|
|
calls.WriteString(strings.Replace("call(test$)\n\t", "$", s, -1))
|
|
}
|
|
|
|
program = strings.Replace(program, "$DECLS", decls.String(), 1)
|
|
program = strings.Replace(program, "$CALLS", calls.String(), 1)
|
|
fmt.Print(program)
|
|
}
|
|
|
|
var program = `package main
|
|
|
|
var count int
|
|
|
|
func call(f func() bool) {
|
|
if f() {
|
|
count++
|
|
}
|
|
}
|
|
|
|
$DECLS
|
|
|
|
func main() {
|
|
$CALLS
|
|
if count != 0 {
|
|
println("failed", count, "case(s)")
|
|
}
|
|
}
|
|
`
|
|
|
|
const decl = `
|
|
type T$ [$]uint8
|
|
func test$() bool {
|
|
v := T${1}
|
|
return v == [$]uint8{2} || v != [$]uint8{1}
|
|
}`
|