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| author | Dmitry Torokhov <[email protected]> | 2021-09-05 18:58:05 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <[email protected]> | 2021-09-05 18:58:05 -0700 |
| commit | 8be98d2f2a0a262f8bf8a0bc1fdf522b3c7aab17 (patch) | |
| tree | a226b265d692d1933c0541802527d8aeb0d469ab /tools/include/linux/const.h | |
| parent | 818b26588994d9d95743fca0a427f08ec6c1c41d (diff) | |
| parent | 3e204d6b76b29274cc8e57f8bd8d9873f04a7f48 (diff) | |
Merge branch 'next' into for-linus
Prepare input updates for 5.15 merge window.
Diffstat (limited to 'tools/include/linux/const.h')
| -rw-r--r-- | tools/include/linux/const.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/include/linux/const.h b/tools/include/linux/const.h index 81b8aae5a855..435ddd72d2c4 100644 --- a/tools/include/linux/const.h +++ b/tools/include/linux/const.h @@ -3,4 +3,12 @@ #include <vdso/const.h> +/* + * This returns a constant expression while determining if an argument is + * a constant expression, most importantly without evaluating the argument. + * Glory to Martin Uecker <[email protected]> + */ +#define __is_constexpr(x) \ + (sizeof(int) == sizeof(*(8 ? ((void *)((long)(x) * 0l)) : (int *)8))) + #endif /* _LINUX_CONST_H */ |