From 967be9e750221ab2ab783f95df79bb26d290a45e Mon Sep 17 00:00:00 2001
From: Martial Simon <msimon_fr@hotmail.com>
Date: Mon, 15 Sep 2025 01:07:58 +0200
Subject: add: added projects

---
 malloc/beware_overflow/beware_overflow.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 malloc/beware_overflow/beware_overflow.c

(limited to 'malloc/beware_overflow/beware_overflow.c')

diff --git a/malloc/beware_overflow/beware_overflow.c b/malloc/beware_overflow/beware_overflow.c
new file mode 100644
index 0000000..4b2555c
--- /dev/null
+++ b/malloc/beware_overflow/beware_overflow.c
@@ -0,0 +1,10 @@
+#include "beware_overflow.h"
+
+void *beware_overflow(void *ptr, size_t nmemb, size_t size)
+{
+    size_t res;
+    if (__builtin_umull_overflow(nmemb, size, &res))
+        return NULL;
+    char *r = ptr;
+    return r + res;
+}
-- 
cgit v1.2.3