From cd6121019bc4f18f82050b2c28fb7e6cd4b532a8 Mon Sep 17 00:00:00 2001
From: wael <adminmail@firemail.cc>
Date: Sat, 5 Mar 2022 16:52:37 +0200
Subject: [PATCH] Update safe string copy for better debug flow and fix
 filename typo.

---
 strings/{strzcpy.c => strscpy.c} | 3 +++
 strings/strscpy.h                | 7 +++++++
 2 files changed, 10 insertions(+)
 rename strings/{strzcpy.c => strscpy.c} (97%)

diff --git a/strings/strzcpy.c b/strings/strscpy.c
similarity index 97%
rename from strings/strzcpy.c
rename to strings/strscpy.c
index 71c64ad..ed279b3 100644
--- a/strings/strzcpy.c
+++ b/strings/strscpy.c
@@ -29,6 +29,9 @@
 * Will return the length copied (and whether it overflowed or not).
 */
 char *strscpy(char *restrict dest, const char* restrict src, size_t n) {
+	/* Sanity check. */
+	assert(dest && src);
+
 	/* Copy using memcpy. */
 	char *last = memccpy(dest, src, NULL_CHAR, n);
 
diff --git a/strings/strscpy.h b/strings/strscpy.h
index b7a8557..f0d0594 100644
--- a/strings/strscpy.h
+++ b/strings/strscpy.h
@@ -20,6 +20,13 @@
 #define STRSCPY_H
 /* Include string.h */
 #include <string.h>
+/* Include assert.h to allow code generation, but only run with debug flag. */
+#ifdef DEBUG
+#ifndef NDEBUG
+#define NDEBUG
+#endif	/* NDEBUG. */
+#endif	/* DEBUG. */
+#include <assert.h>
 
 /* Constants. */
 #define NULL_CHAR	'\0'