From 7ebc328b5ac9158dc52cc7809d4c19d2d9a33594 Mon Sep 17 00:00:00 2001
From: karutoh <NelsonArron@outlook.com>
Date: Thu, 8 Feb 2024 18:51:44 -0800
Subject: [PATCH] fixed get_heap_size function by adding null pointer checks.

---
 main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/main.c b/main.c
index dc86001..ccfe0b0 100644
--- a/main.c
+++ b/main.c
@@ -157,6 +157,9 @@ void free(void* ptr)
 /// @returns Usage in bytes.
 size_t get_heap_size()
 {
+	if (!first || !last)
+		return 0;
+
 	return ((char*)last + last->size) - (char*)first;
 }