[uclibc-ng-devel] [PATCH] sys/cdefs.h: add definition of __attribute_alloc_size__

Commit cee0b058fa0b4501b289a2da365182d60314d746 ("add aligned_alloc required for latest gcc libstdc++") added the prototype of aligned_alloc() to <stdlib.h>. This prototype contains '__attribute_alloc_size__ ((2))', but this is not defined anywhere in uClibc-ng. This commit addresses that by adding the relevant definition in <sys/cdefs.h>, borrowed from glibc. Signed-off-by: Thomas Petazzoni &lt;thomas.petazzoni(a)free-electrons.com&gt; --- include/sys/cdefs.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h index f725ce9..6cd3811 100644 --- a/include/sys/cdefs.h +++ b/include/sys/cdefs.h @@ -222,6 +222,15 @@ # define __attribute_malloc__ /* Ignore */ #endif +/* Tell the compiler which arguments to an allocation function + indicate the size of the allocation. */ +#if __GNUC_PREREQ (4, 3) +# define __attribute_alloc_size__(params) \ + __attribute__ ((__alloc_size__ params)) +#else +# define __attribute_alloc_size__(params) /* Ignore. */ +#endif + /* At some point during the gcc 2.96 development the `pure' attribute for functions was introduced. We don't want to use it unconditionally (although this would be possible) since it generates warnings. */ -- 2.7.4