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| author | Jan Kara <jack@suse.cz> | 2019-11-06 12:52:10 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2019-11-06 12:52:10 +0300 |
| commit | dae82c7fd0926840c832151f3258ba751f73d348 (patch) | |
| tree | 5cdef8359f6cfb964919ffb0bfa36d2de60140b1 /include/linux/compiler_attributes.h | |
| parent | a9913d7eafa74eb2e34e26aa31fe80449b999f8e (diff) | |
| parent | a0828b6ccbdfd46afbbaa9f28df359081c29109b (diff) | |
| download | linux-dae82c7fd0926840c832151f3258ba751f73d348.tar.xz | |
Pull series refactoring quota enabling and disabling code.
Diffstat (limited to 'include/linux/compiler_attributes.h')
| -rw-r--r-- | include/linux/compiler_attributes.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h index 6b318efd8a74..cdf016596659 100644 --- a/include/linux/compiler_attributes.h +++ b/include/linux/compiler_attributes.h @@ -40,6 +40,7 @@ # define __GCC4_has_attribute___noclone__ 1 # define __GCC4_has_attribute___nonstring__ 0 # define __GCC4_has_attribute___no_sanitize_address__ (__GNUC_MINOR__ >= 8) +# define __GCC4_has_attribute___fallthrough__ 0 #endif /* @@ -186,6 +187,22 @@ #endif /* + * Add the pseudo keyword 'fallthrough' so case statement blocks + * must end with any of these keywords: + * break; + * fallthrough; + * 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 + +/* * Note the missing underscores. * * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-noinline-function-attribute |