Fixed bug #75797

Fix zend_register_class_alias_ex() to use non-persistent strings
for (non-persistent) userland classes.

Author: Massimiliano Braglia

NEWS

@@ -6,6 +6,8 @@ PHP                                                                        NEWS
   . Fixed bug #76754 (parent private constant in extends class memory leak).
     (Laruence)
   . Fixed bug #72443 (Generate enabled extension). (petk)
+  . Fixed bug #75797 (Memory leak when using class_alias() in non-debug mode).
+    (Massimiliano Braglia)
 
 - Bz2:
   . Fixed arginfo for bzcompress. (Tyson Andre)

Zend/zend_API.c

@@ -2774,12 +2774,15 @@ ZEND_API zend_class_entry *zend_register_internal_interface(zend_class_entry *or
 ZEND_API int zend_register_class_alias_ex(const char *name, size_t name_len, zend_class_entry *ce) /* {{{ */
 {
 	zend_string *lcname;
+	int persistent;
+
+	persistent = ce->type != ZEND_USER_CLASS;
 
 	if (name[0] == '\\') {
-		lcname = zend_string_alloc(name_len-1, 1);
+		lcname = zend_string_alloc(name_len-1, persistent);
 		zend_str_tolower_copy(ZSTR_VAL(lcname), name+1, name_len-1);
 	} else {
-		lcname = zend_string_alloc(name_len, 1);
+		lcname = zend_string_alloc(name_len, persistent);
 		zend_str_tolower_copy(ZSTR_VAL(lcname), name, name_len);
 	}