Make use of pass_dynamic_object_size when available

1 files changed, 4 insertions, 0 deletions

diff --git a/include/fortify-headers.h b/include/fortify-headers.h
index 18d302b..a918b10 100644
--- a/include/fortify-headers.h
+++ b/include/fortify-headers.h
@@ -25,7 +25,11 @@
 #ifdef __clang__
 
 /* clang uses overloads; see https://github.com/llvm/llvm-project/issues/53516 */
+#if __has_attribute(pass_dynamic_object_size)
+#define _FORTIFY_POSN(n) const __attribute__((pass_dynamic_object_size(n)))
+#else
 #define _FORTIFY_POSN(n) const __attribute__((pass_object_size(n)))
+#endif /* pass_dynamic_object_size) */
 /* we can't use extern inline with overloads without making them external */
 #define _FORTIFY_INLINE static __inline__ \
         __attribute__((__always_inline__,__artificial__,__overloadable__))