From d10b1290b28144ea6b5a25824bec930a8a8a95b4 Mon Sep 17 00:00:00 2001
From: Pierre Joye <pajoye@php.net>
Date: Sat, 28 Jan 2006 00:13:13 +0000
Subject: [PATCH] - #36185 str_rot13(NULL) crash

---
 ext/standard/string.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ext/standard/string.c b/ext/standard/string.c
index 7194f804c1..94bbc603b5 100644
--- a/ext/standard/string.c
+++ b/ext/standard/string.c
@@ -6324,6 +6324,8 @@ PHP_FUNCTION(str_rot13)
 	if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &arg)) {
 		WRONG_PARAM_COUNT;
 	}
+
+	convert_to_string_ex(arg);
 	RETVAL_ZVAL(*arg, 1, 0);
 
 	php_strtr(Z_STRVAL_P(return_value), Z_STRLEN_P(return_value), rot13_from, rot13_to, 52);
-- 
2.40.0