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master
test/fixedbugs/issue10135.go
25 строк
597 B
Shenghou Ma
runtime: don't return a slice with nil ptr but non-zero len from growslice
12 мар 2015, 03:08
12 мар 2015, 03:08
0d6a0d6
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// run // Copyright 2015 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. // Issue 10135: append a slice with zero-sized element used // to always return a slice with the same data pointer as the // old slice, even if it's nil, so this program used to panic // with nil pointer dereference because after append, s is a // slice with nil data pointer but non-zero len and cap. package main type empty struct{} func main() { var s []empty s = append(s, empty{}) for _, v := range s { _ = v } }