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| author | Karel Zak | 2011-02-07 17:29:47 +0100 |
|---|---|---|
| committer | Karel Zak | 2011-02-07 17:29:47 +0100 |
| commit | 40084d0d5c5031580907d61e2df81b5b21af6c68 (patch) | |
| tree | de96970d47e2bab2691361b596509b152c3f4450 /include/c.h | |
| parent | fsck: include c.h, fallback for PATH_MAX (diff) | |
| download | kernel-qcow2-util-linux-40084d0d5c5031580907d61e2df81b5b21af6c68.tar.gz kernel-qcow2-util-linux-40084d0d5c5031580907d61e2df81b5b21af6c68.tar.xz kernel-qcow2-util-linux-40084d0d5c5031580907d61e2df81b5b21af6c68.zip | |
include: [c.h] add fallback for alloc_size attributes
Reported-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'include/c.h')
| -rw-r--r-- | include/c.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/c.h b/include/c.h index 02c29e960..f50a338c9 100644 --- a/include/c.h +++ b/include/c.h @@ -10,6 +10,15 @@ /* * Compiler specific stuff */ +#ifndef __GNUC_PREREQ +# if defined __GNUC__ && defined __GNUC_MINOR__ +# define __GNUC_PREREQ(maj, min) \ + ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) +# else +# define __GNUC_PREREQ(maj, min) 0 +# endif +#endif + #ifdef __GNUC__ /* &a[0] degrades to a pointer: a different type from an array */ @@ -24,6 +33,24 @@ # define ignore_result(x) ((void) (x)) #endif /* !__GNUC__ */ +/* + * Function attributes + */ +#ifndef __ul_alloc_size +# if __GNUC_PREREQ (3, 0) +# define __ul_alloc_size(s) __attribute__((alloc_size(s))) +# else +# define __ul_alloc_size(s) +# endif +#endif + +#ifndef __ul_calloc_size +# if __GNUC_PREREQ (3, 0) +# define __ul_calloc_size(n, s) __attribute__((alloc_size(n, s))) +# else +# define __ul_calloc_size(n, s) +# endif +#endif /* Force a compilation error if condition is true, but also produce a * result (of value 0 and type size_t), so the expression can be used |