You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
809 B
49 lines
809 B
// run
|
|
|
|
// Copyright 2019 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
|
|
|
|
type T struct {
|
|
s [1]string
|
|
pad [16]uintptr
|
|
}
|
|
|
|
//go:noinline
|
|
func f(t *int, p *int) []T {
|
|
var res []T
|
|
for {
|
|
var e *T
|
|
res = append(res, *e)
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
defer func() {
|
|
useStack(100) // force a stack copy
|
|
// We're expecting a panic.
|
|
// The bug in this issue causes a throw, which this recover() will not squash.
|
|
recover()
|
|
}()
|
|
junk() // fill the stack with invalid pointers
|
|
f(nil, nil)
|
|
}
|
|
|
|
func useStack(n int) {
|
|
if n == 0 {
|
|
return
|
|
}
|
|
useStack(n - 1)
|
|
}
|
|
|
|
//go:noinline
|
|
func junk() uintptr {
|
|
var a [128]uintptr // 1k of bad pointers on the stack
|
|
for i := range a {
|
|
a[i] = 0xaa
|
|
}
|
|
return a[12]
|
|
}
|