diff options
Diffstat (limited to 'src/commonlib/bsd')
| -rw-r--r-- | src/commonlib/bsd/include/commonlib/bsd/compiler.h | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/commonlib/bsd/include/commonlib/bsd/compiler.h b/src/commonlib/bsd/include/commonlib/bsd/compiler.h index 42f9235e8e..aada973749 100644 --- a/src/commonlib/bsd/include/commonlib/bsd/compiler.h +++ b/src/commonlib/bsd/include/commonlib/bsd/compiler.h @@ -15,8 +15,21 @@ #define __aligned(x) __attribute__((__aligned__(x))) #endif -#ifndef __unused -#define __unused __attribute__((__unused__)) +/* Because there may be variables/parameters whose name contains "__unused" in + header files of libc, namely musl, these names consistent with ones in the + Linux kernel may be a better choice. */ + +/* This is used to mark identifiers unused in all conditions, e.g. a parameter + completely unused in all code branch, only present to fit an API. */ +#ifndef __always_unused +#define __always_unused __attribute__((__unused__)) +#endif + +/* This is used to mark identifiers unused in some conditions, e.g. a parameter + only unused in some code branches, a global variable only accessed with code + being conditionally preprocessed, etc. */ +#ifndef __maybe_unused +#define __maybe_unused __attribute__((__unused__)) #endif #ifndef __must_check |