From 6e9bbbc91e0ea402e132b659e85829f8042e07c8 Mon Sep 17 00:00:00 2001
From: wargio <wargio@libero.it>
Date: Tue, 23 Apr 2024 10:36:40 +0800
Subject: [PATCH] Always check the length of RzVector when accessing the tail
 elem

---
 librz/include/rz_vector.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/librz/include/rz_vector.h b/librz/include/rz_vector.h
index 3d627a7d203..5cd46fe0e15 100644
--- a/librz/include/rz_vector.h
+++ b/librz/include/rz_vector.h
@@ -113,6 +113,9 @@ static inline void *rz_vector_head(const RzVector *vec) {
 // returns a pointer to the last element of the vector
 static inline void *rz_vector_tail(RzVector *vec) {
 	rz_return_val_if_fail(vec, NULL);
+	if (vec->len < 1) {
+		return NULL;
+	}
 	return (char *)vec->a + vec->elem_size * (vec->len - 1);
 }