Make use of __builtin_dynamic_object_size

GCC and Clang provide __builtin_dynamic_object_size
(see documentation: https://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html),
so we should make use of it when its available.

1 files changed, 2 insertions, 2 deletions

diff --git a/include/sys/select.h b/include/sys/select.h
index bcee8be..1f19672 100644
--- a/include/sys/select.h
+++ b/include/sys/select.h
@@ -30,7 +30,7 @@ extern "C" {
 static __inline__ __attribute__((__always_inline__,__gnu_inline__,__artificial__))
 void __fortify_FD_CLR(int __f, fd_set *__s)
 {
-        size_t __b = __builtin_object_size(__s, 0);
+        size_t __b = __bos(__s, 0);
 
         if (__f < 0 || __f >= FD_SETSIZE || __b < sizeof(fd_set))
                 __builtin_trap();
@@ -40,7 +40,7 @@ void __fortify_FD_CLR(int __f, fd_set *__s)
 static __inline__ __attribute__((__always_inline__,__gnu_inline__,__artificial__))
 void __fortify_FD_SET(int __f, fd_set *__s)
 {
-        size_t __b = __builtin_object_size(__s, 0);
+        size_t __b = __bos(__s, 0);
 
         if (__f < 0 || __f >= FD_SETSIZE || __b < sizeof(fd_set))
                 __builtin_trap();