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| author | Arthur de Jong <arthur@arthurdejong.org> | 2008-03-30 16:31:46 +0200 |
|---|---|---|
| committer | Arthur de Jong <arthur@arthurdejong.org> | 2008-03-30 16:31:46 +0200 |
| commit | 799dd39d431189aaf0f836866c6c3c28dee75bf4 (patch) | |
| tree | 7e29bee9f95b1b8410da824ba56d42754ea43c08 /compat/attrs.h | |
| parent | f3d160df2da80a7e49b46594061755b8ffc47276 (diff) | |
make test for compiler versions simpler and per used attribute
git-svn-id: http://arthurdejong.org/svn/nss-pam-ldapd/nss-ldapd@647 ef36b2f9-881f-0410-afb5-c4e39611909c
Diffstat (limited to 'compat/attrs.h')
| -rw-r--r-- | compat/attrs.h | 44 |
1 files changed, 27 insertions, 17 deletions
diff --git a/compat/attrs.h b/compat/attrs.h index b91cc11..492f45c 100644 --- a/compat/attrs.h +++ b/compat/attrs.h @@ -28,46 +28,56 @@ /* These are macros to use some gcc-specific flags in case the're available and otherwise define them to empty strings. This allows us to give - the compiler some extra information. */ - -#if GCC_VERSION(3,0) /* gcc >= 3.0 */ + the compiler some extra information. + See http://gcc.gnu.org/onlinedocs/gcc/Attribute-Syntax.html + for a list of attributes supported by gcc */ /* this is used to flag function parameters that are not used in the function body. */ +#if GCC_VERSION(3,0) #define UNUSED(x) x __attribute__((__unused__)) +#else +#define UNUSED(x) x +#endif /* this is used to add extra format checking to the function calls as if this was a printf()-like function */ +#if GCC_VERSION(3,0) #define LIKE_PRINTF(format_idx,arg_idx) \ __attribute__((__format__(__printf__,format_idx,arg_idx))) +#else +#define LIKE_PRINTF(format_idx,arg_idx) /* no attribute */ +#endif /* indicates that the function is "pure": it's result is purely based on the parameters and has no side effects or used static data */ +#if GCC_VERSION(3,0) #define PURE __attribute__((__pure__)) +#else +#define PURE /* no attribute */ +#endif /* the function returns a new data structure that has been freshly allocated */ +#if GCC_VERSION(3,0) #define LIKE_MALLOC __attribute__((__malloc__)) - -#else /* not gcc >= 3.0 */ - -#define UNUSED(x) x -#define LIKE_PRINTF(format_idx,arg_idx) /* no attribute */ -#define PURE /* no attribute */ +#else #define LIKE_MALLOC /* no attribute */ - -#endif /* not gcc >= 3.0 */ - -#if GCC_VERSION(3,4) /* gcc >= 3.4 */ +#endif /* the function's return value should be used by the caller */ +#if GCC_VERSION(3,4) #define MUST_USE __attribute__((__warn_unused_result__)) - -#else /* not gcc >= 3.4 */ - +#else #define MUST_USE /* no attribute */ +#endif -#endif /* not gcc >= 3.4 */ +/* the function's return value should be used by the caller */ +#if GCC_VERSION(2,5) +#define NORETURN __attribute__((__noreturn__)) +#else +#define NORETURN /* no attribute */ +#endif /* define __STRING if it's not yet defined */ #ifndef __STRING |