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-rw-r--r--spice/macros.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/spice/macros.h b/spice/macros.h
index 29cdf82..cd63528 100644
--- a/spice/macros.h
+++ b/spice/macros.h
@@ -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)))