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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
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Issue 4316: the stack overflow check in the linker
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// is confused when it encounters a split-stack function
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// that needs 0 bytes of stack space.
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package main
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type Peano *Peano
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func makePeano(n int) *Peano {
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if n == 0 {
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return nil
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}
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p := Peano(makePeano(n - 1))
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return &p
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}
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var countArg Peano
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var countResult int
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func countPeano() {
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if countArg == nil {
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countResult = 0
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return
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}
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countArg = *countArg
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countPeano()
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countResult++
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}
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var s = "(())"
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var pT = 0
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func p() {
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if pT >= len(s) {
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return
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}
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if s[pT] == '(' {
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pT += 1
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p()
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if pT < len(s) && s[pT] == ')' {
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pT += 1
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} else {
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return
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}
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p()
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}
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}
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func main() {
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countArg = makePeano(4096)
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countPeano()
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if countResult != 4096 {
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println("countResult =", countResult)
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panic("countResult != 4096")
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}
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p()
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}
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