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| author | Zdenek Kabelac <zkabelac@redhat.com> | 2020-03-05 12:58:34 +0100 |
|---|---|---|
| committer | Zdenek Kabelac <zkabelac@redhat.com> | 2020-03-05 17:38:55 +0100 |
| commit | f439716b7583556352f1b7a6696ada32f52e44b4 (patch) | |
| tree | 917f503eebc9115a44eb1992d316e0246b6f84a7 /base | |
| parent | b3fa71fbd8e583c040c04e655f3ebe70a3d941b2 (diff) | |
| download | lvm2-f439716b7583556352f1b7a6696ada32f52e44b4.tar.gz | |
container_of: use offsetof from stddef
Use standardized offsetof() macro from stddef.
Helps to build valid code with latest gcc10 with -O2.
Diffstat (limited to 'base')
| -rw-r--r-- | base/memory/container_of.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/base/memory/container_of.h b/base/memory/container_of.h index 4e4c662bf..ddb795935 100644 --- a/base/memory/container_of.h +++ b/base/memory/container_of.h @@ -1,4 +1,4 @@ -// Copyright (C) 2018 Red Hat, Inc. All rights reserved. +// Copyright (C) 2018 - 2020 Red Hat, Inc. All rights reserved. // // This file is part of LVM2. // @@ -13,10 +13,12 @@ #ifndef BASE_MEMORY_CONTAINER_OF_H #define BASE_MEMORY_CONTAINER_OF_H +#include <stddef.h> // offsetof + //---------------------------------------------------------------- #define container_of(v, t, head) \ - ((t *)((const char *)(v) - (const char *)&((t *) 0)->head)) + ((t *)((const char *)(v) - offsetof(t, head))) //---------------------------------------------------------------- |