mirror of
https://github.com/golang/go
synced 2024-11-24 22:10:02 -07:00
2e73453aca
The stack overflow checker in the linker uses the spadj field to determine whether stack space will be large enough or not. When spadj=0, the checker treats the function as a nosplit and emits an error although the program is correct. Also enable the stack checker in 8l. Fixes #4316. R=rsc, golang-dev CC=golang-dev https://golang.org/cl/6855088
65 lines
973 B
Go
65 lines
973 B
Go
// run
|
|
|
|
// 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 4316: the stack overflow check in the linker
|
|
// is confused when it encounters a split-stack function
|
|
// that needs 0 bytes of stack space.
|
|
|
|
package main
|
|
|
|
type Peano *Peano
|
|
|
|
func makePeano(n int) *Peano {
|
|
if n == 0 {
|
|
return nil
|
|
}
|
|
p := Peano(makePeano(n - 1))
|
|
return &p
|
|
}
|
|
|
|
var countArg Peano
|
|
var countResult int
|
|
|
|
func countPeano() {
|
|
if countArg == nil {
|
|
countResult = 0
|
|
return
|
|
}
|
|
countArg = *countArg
|
|
countPeano()
|
|
countResult++
|
|
}
|
|
|
|
var s = "(())"
|
|
var pT = 0
|
|
|
|
func p() {
|
|
if pT >= len(s) {
|
|
return
|
|
}
|
|
if s[pT] == '(' {
|
|
pT += 1
|
|
p()
|
|
if pT < len(s) && s[pT] == ')' {
|
|
pT += 1
|
|
} else {
|
|
return
|
|
}
|
|
p()
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
countArg = makePeano(4096)
|
|
countPeano()
|
|
if countResult != 4096 {
|
|
println("countResult =", countResult)
|
|
panic("countResult != 4096")
|
|
}
|
|
|
|
p()
|
|
}
|