[Spice-devel] [spice-protocol PATCH v2 01/10] macros: verify if __alloc_size__ works with clang

[Victor Toso]

Hey,

On Mon, Aug 24, 2015 at 01:55:05PM +0200, Christophe Fergeau wrote:
> On Fri, Aug 14, 2015 at 06:24:22PM +0200, Victor Toso wrote:
> > So we can avoid using using an attribute not supported for the compiler.
> > 
> > warning:
> > ../spice-common/common/mem.h:91:80: warning: unknown attribute
> > '__alloc_size__' ignored [-Wunknown-attributes]
> 
> Any idea if this is because your clang is too old, or because it only
> knows of __attribute__((alloc_size(x,y)) which is what is documented at
> https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-g_t_0040code_007balloc_005fsize_007d-function-attribute-3080
> ?
> 
> According to
> http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20120521/058005.html
> clang has support for this attribute.
> 
> Christophe

Looks like they drop it :(
https://github.com/llvm-mirror/clang/commit/c047507a9a79e89fc8339e074fa72822a7e7ea73

Cheers,
  Victor Toso