diff options
| author | Ahmad Fatoum <ahmad@a3f.at> | 2022-03-02 21:12:15 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2022-03-08 09:57:59 +0100 |
| commit | c77ed8d120be90a43845f785a8dc82d490d2bd10 (patch) | |
| tree | bdd4380ab8bc034b69ecf0e21adc8dd5be5c92cd /include | |
| parent | 9d6cce28e006798655add3b799ec6adb55b5564c (diff) | |
| download | barebox-c77ed8d120be90a43845f785a8dc82d490d2bd10.tar.gz barebox-c77ed8d120be90a43845f785a8dc82d490d2bd10.tar.xz | |
compiler: add support for fallthrough attribute
Use of it is enforced in Linux now, so code we'll port may contain it.
Import the definition.
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Link: https://lore.barebox.org/20220302201215.658986-1-ahmad@a3f.at
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/compiler_types.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index aa9cbcac77..bc1b43aab0 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -112,6 +112,27 @@ struct ftrace_likely_data { #define __deprecated #define __deprecated_for_modules +#ifndef __has_attribute +#define __has_attribute(...) 0 +#endif + +/* + * Add the pseudo keyword 'fallthrough' so case statement blocks + * must end with any of these keywords: + * break; + * fallthrough; + * continue; + * goto <label>; + * return [expression]; + * + * gcc: https://gcc.gnu.org/onlinedocs/gcc/Statement-Attributes.html#Statement-Attributes + */ +#if __has_attribute(__fallthrough__) +# define fallthrough __attribute__((__fallthrough__)) +#else +# define fallthrough do {} while (0) /* fallthrough */ +#endif + #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ |