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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-12-27 15:36:01 (GMT) |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-01-14 21:46:29 (GMT) |
| commit | ff90af6c73883121358251bba66245ff4da3755c (patch) | |
| tree | b529b70b7ded25b775a0affbbedbe5220872e13c /include/linux | |
| parent | a7b817699985b515b63a601b317e3e8fd413d7e9 (diff) | |
| download | u-boot-fsl-qoriq-ff90af6c73883121358251bba66245ff4da3755c.tar.xz | |
typecheck: import include/linux/typecheck.h from Linux 4.9
Copied from Linux 4.9.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/typecheck.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/typecheck.h b/include/linux/typecheck.h new file mode 100644 index 0000000..eb5b74a --- /dev/null +++ b/include/linux/typecheck.h @@ -0,0 +1,24 @@ +#ifndef TYPECHECK_H_INCLUDED +#define TYPECHECK_H_INCLUDED + +/* + * Check at compile time that something is of a particular type. + * Always evaluates to 1 so you may use it easily in comparisons. + */ +#define typecheck(type,x) \ +({ type __dummy; \ + typeof(x) __dummy2; \ + (void)(&__dummy == &__dummy2); \ + 1; \ +}) + +/* + * Check at compile time that 'function' is a certain type, or is a pointer + * to that type (needs to use typedef for the function type.) + */ +#define typecheck_fn(type,function) \ +({ typeof(type) __tmp = function; \ + (void)__tmp; \ +}) + +#endif /* TYPECHECK_H_INCLUDED */ |