From 4b43b375b7abae22070cd86bfc26a8222233150e Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Wed, 31 Jan 2024 13:24:56 -0500
Subject: check for overlapping pointers

---
 src/stdlib/wcstombs.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/stdlib/wcstombs.c')

diff --git a/src/stdlib/wcstombs.c b/src/stdlib/wcstombs.c
index 1d9dd4eb..62524aa3 100644
--- a/src/stdlib/wcstombs.c
+++ b/src/stdlib/wcstombs.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include <wchar.h>
 #include "_stdlib.h"
 
 /** convert wide character string to multibyte string **/
@@ -6,6 +7,7 @@
 size_t wcstombs(char * restrict s, const wchar_t * restrict pwcs, size_t n)
 {
 	SIGNAL_SAFE(0);
+	ASSERT_NOOVERLAP(s, n, pwcs, wcslen(pwcs));
 
 	(void)s; (void)pwcs; (void)n;
 	/* TODO */
-- 
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