| Index: test/nilptr_s390.go |
| =================================================================== |
| new file mode 100644 |
| --- /dev/null |
| +++ b/test/nilptr_s390.go |
| @@ -0,0 +1,23 @@ |
| +// +build s390 |
| +// run nilptr.go nilptr_s390_common.go |
| + |
| +// Copyright 2014 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. |
| + |
| +// Platform specific test configuration |
| + |
| +package main |
| + |
| +// Having a big address space means that indexing at a large |
| +// offset from a nil pointer might not cause a memory access |
| +// fault. This test checks that Go is doing the correct explicit |
| +// checks to catch these nil pointer accesses, not just relying on |
| +// the hardware. |
| +// |
| +// Give us a big address space somewhere near minBssOffset. |
| +const inMemSize uintptr = 256 << 20 // 256 MiB |
| +const minBssOffset uintptr = 1 << 22 // 0x00400000 |
| +const maxlen uintptr = (1 << 31) - 2 // 0x7ffffffe |
| +const inMaxlenArray uintptr = minBssOffset + inMemSize / 2 |
| +var dummy [inMemSize]byte |
