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utils.h: add fallthrough macro

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This can be used to silence clang warnings about unannotated fall-through

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2021-05-16 17:31:57 +02:00
parent b36a3a9009
commit b8abed7494
1 changed files with 12 additions and 0 deletions
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12
utils.h
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@ -227,6 +227,18 @@ int clock_gettime(int type, struct timespec *tv);
#define __hidden __attribute__((visibility("hidden"))) #define __hidden __attribute__((visibility("hidden")))
#endif #endif
#ifndef __has_attribute
# define __has_attribute(x) 0
#endif
#ifndef fallthrough
# if __has_attribute(__fallthrough__)
# define fallthrough __attribute__((__fallthrough__))
# else
# define fallthrough do {} while (0) /* fallthrough */
# endif
#endif
int b64_encode(const void *src, size_t src_len, int b64_encode(const void *src, size_t src_len,
void *dest, size_t dest_len); void *dest, size_t dest_len);