From 3e6704d0be707487d7a9dccfdc75203c7261e11b Mon Sep 17 00:00:00 2001
From: jvoisin
Date: Sat, 18 Mar 2023 14:01:02 +0100
Subject: 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.
---
 include/stdlib.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'include/stdlib.h')

diff --git a/include/stdlib.h b/include/stdlib.h
index 11155cf..8642e83 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -42,7 +42,7 @@ _FORTIFY_FN(realpath) char *realpath(const char *__p, char *__r)
 #ifndef PATH_MAX
 #error PATH_MAX unset. A fortified realpath will not work.
 #else
-	if (__r && PATH_MAX > __builtin_object_size(__r, 2)) {
+	if (__r && PATH_MAX > __bos(__r, 2)) {
 		char __buf[PATH_MAX], *__ret;
 		size_t __l;
 
@@ -50,7 +50,7 @@ _FORTIFY_FN(realpath) char *realpath(const char *__p, char *__r)
 		if (!__ret)
 			return NULL;
 		__l = __builtin_strlen(__ret) + 1;
-		if (__l > __builtin_object_size(__r, 0))
+		if (__l > __bos(__r, 0))
 			__builtin_trap();
 		__builtin_memcpy(__r, __ret, __l);
 		return __r;
-- 
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