diff options
Diffstat (limited to 'test/nilptr/structfield.go')
-rw-r--r-- | test/nilptr/structfield.go | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/test/nilptr/structfield.go b/test/nilptr/structfield.go deleted file mode 100644 index 35196bb68..000000000 --- a/test/nilptr/structfield.go +++ /dev/null @@ -1,34 +0,0 @@ -// $G $D/$F.go && $L $F.$A && -// ((! sh -c ./$A.out) >/dev/null 2>&1 || echo BUG: should fail) - -// Copyright 2009 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 - -import "unsafe" - -var dummy [512<<20]byte // give us a big address space -type T struct { - x [256<<20] byte - i int -} - -func main() { - // the test only tests what we intend to test - // if dummy starts in the first 256 MB of memory. - // otherwise there might not be anything mapped - // at the address that might be accidentally - // dereferenced below. - if uintptr(unsafe.Pointer(&dummy)) > 256<<20 { - panic("dummy too far out") - } - - // The problem here is that indexing into t with a large - // enough index can jump out of the unmapped section - // at the beginning of memory and into valid memory. - // We require the pointer dereference to check. - var t *T - println(t.i) // should crash -} |