| // 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] |
| } |
