From fe1fc9864cf2c216a91e940aaf7b2739ff6729b3 Mon Sep 17 00:00:00 2001
From: klemek <klemek.dev@proton.me>
Date: Sat, 16 May 2026 15:39:17 +0200
Subject: [PATCH] fix: string_replace_at check args validity

---
 src/string.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/string.c b/src/string.c
index 6eb5e18..1426def 100644
--- a/src/string.c
+++ b/src/string.c
@@ -62,6 +62,10 @@ char *string_replace_at(const char *src, unsigned int from, unsigned int to,
   unsigned long rpl_len;
   char *dst;
 
+  if (to < from) {
+    return "";
+  }
+
   src_len = strnlen(src, STR_LEN * STR_LEN);
   rpl_len = strnlen(rpl, STR_LEN * STR_LEN);