From a37c769fbbc956461210317fa856be4042c144f4 Mon Sep 17 00:00:00 2001
From: jvoisin
Date: Sun, 9 Jul 2023 18:12:01 +0200
Subject: Improve a bit `size_t*size_t` overflow checks

---
 include/stdio.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'include/stdio.h')

diff --git a/include/stdio.h b/include/stdio.h
index cc16e46..d5206f5 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -53,7 +53,7 @@ _FORTIFY_FN(fread) size_t fread(void * _FORTIFY_POS0 __d, size_t __n,
 {
 	size_t __b = __bos(__d, 0);
 
-	if (__n != 0 && (__n * __m) / __n != __m)
+	if (__bmo(__n, __m))
 		__builtin_trap();
 	if (__n * __m > __b)
 		__builtin_trap();
@@ -66,7 +66,7 @@ _FORTIFY_FN(fwrite) size_t fwrite(const void * _FORTIFY_POS0 __d, size_t __n,
 {
 	size_t __b = __bos(__d, 0);
 
-	if (__n != 0 && (__n * __m) / __n != __m)
+	if (__bmo(__n, __m))
 		__builtin_trap();
 	if (__n * __m > __b)
 		__builtin_trap();
-- 
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