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Viewing changes to test/fixedbugs/issue4316.go

  • Committer: Package Import Robot
  • Author(s): James Page
  • Date: 2013-08-20 14:06:23 UTC
  • mfrom: (14.1.23 saucy-proposed)
  • Revision ID: package-import@ubuntu.com-20130820140623-b414jfxi3m0qkmrq
Tags: 2:1.1.2-2ubuntu1
https://launchpad.net/bugs/1211749
https://launchpad.net/bugs/1202027
* Merge from Debian unstable (LP: #1211749, #1202027). Remaining changes:
  - 016-armhf-elf-header.patch: Use correct ELF header for armhf binaries.
  - d/control,control.cross: Update Breaks/Replaces for Ubuntu
    versions to ensure smooth upgrades, regenerate control file.

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Lines of Context:
test/fixedbugs/issue4316.go
 
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// 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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}