From b6c53c9648d208ece06b4812e5f8786c9948cc20 Mon Sep 17 00:00:00 2001
From: lukileczo <lukasz.leczkowski@phoenix-rtos.com>
Date: Tue, 23 Jan 2024 14:21:40 +0100
Subject: [PATCH] string/strstr: handle empty special case

JIRA: RTOS-743
---
 string/string.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/string/string.c b/string/string.c
index 539a7ca6..714c12c7 100644
--- a/string/string.c
+++ b/string/string.c
@@ -327,6 +327,10 @@ char *strstr(const char *s1, const char *s2)
 {
 	const char *p1, *p2;
 
+	if (*s2 == '\0') {
+		return (char *)s1;
+	}
+
 	for (; *s1; ++s1) {
 		for (p1 = s1, p2 = s2; *p2 && *p1 && *p1 == *p2; ++p1, ++p2)
 			;