From: Antony Dovgal <tony2001@php.net>
Date: Thu, 9 Dec 2004 14:14:21 +0000 (+0000)
Subject: fix segfault in session_module_name() when session.save_handler is empty
X-Git-Tag: RELEASE_0_2~545
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e76824c91fd428b663dd14dfbabe9501e26f360d;p=php

fix segfault in session_module_name() when session.save_handler is empty
---

diff --git a/ext/session/session.c b/ext/session/session.c
index 34d86f7658..cff31696af 100644
--- a/ext/session/session.c
+++ b/ext/session/session.c
@@ -1337,11 +1337,21 @@ PHP_FUNCTION(session_module_name)
 		}
 		PS(mod_data) = NULL;
 
-		RETVAL_STRING(safe_estrdup(PS(mod)->s_name), 0);
-
+		if (PS(mod) && PS(mod)->s_name) {
+			RETVAL_STRING(safe_estrdup(PS(mod)->s_name), 0);
+		}
+		else {
+			RETVAL_EMPTY_STRING();
+		}
+		
 		zend_alter_ini_entry("session.save_handler", sizeof("session.save_handler"), Z_STRVAL_PP(p_name), Z_STRLEN_PP(p_name), PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
 	} else {
-		RETURN_STRING(safe_estrdup(PS(mod)->s_name), 0);
+		if (PS(mod) && PS(mod)->s_name) {
+			RETURN_STRING(safe_estrdup(PS(mod)->s_name), 0);
+		}
+		else {
+			RETURN_EMPTY_STRING();
+		}
 	}
 }
 /* }}} */