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// 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]
}
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