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macros: fix compatibility with non-clang compilers

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Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
This commit is contained in:
Frediano Ziglio 2015-08-20 11:16:31 +01:00
parent 39be7a8fce
commit b397eca557
1 changed files with 4 additions and 0 deletions
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4
spice/macros.h
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@ -47,6 +47,10 @@
#define SPICE_GNUC_NULL_TERMINATED
#endif
#ifndef __has_feature
#define __has_feature(x) 0 /* Compatibility with non-clang compilers. */
#endif
#if (!defined(__clang__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || \
(defined(__clang__) && __has_feature(__alloc_size__))
#define SPICE_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x)))