Followup for bug #72785

Fix incorrect handling of nesting ... need to reset to the old
value afterwards.

4 files changed, 529 insertions, 498 deletions

diff --git a/ext/standard/php_var.h b/ext/standard/php_var.h
index 2d1cc5a40b..c9dbddeaac 100644
--- a/ext/standard/php_var.h
+++ b/ext/standard/php_var.h
@@ -50,6 +50,7 @@ PHPAPI php_serialize_data_t php_var_serialize_init(void);
 PHPAPI void php_var_serialize_destroy(php_serialize_data_t d);
 PHPAPI php_unserialize_data_t php_var_unserialize_init(void);
 PHPAPI void php_var_unserialize_destroy(php_unserialize_data_t d);
+PHPAPI HashTable *php_var_unserialize_get_allowed_classes(php_unserialize_data_t d);
 PHPAPI void php_var_unserialize_set_allowed_classes(php_unserialize_data_t d, HashTable *classes);
 
 #define PHP_VAR_SERIALIZE_INIT(d) \
diff --git a/ext/standard/var.c b/ext/standard/var.c
index 18d027f5aa..8722f3df34 100644
--- a/ext/standard/var.c
+++ b/ext/standard/var.c
@@ -1065,7 +1065,7 @@ PHP_FUNCTION(unserialize)
 	const unsigned char *p;
 	php_unserialize_data_t var_hash;
 	zval *options = NULL, *classes = NULL;
-	HashTable *class_hash = NULL;
+	HashTable *class_hash = NULL, *prev_class_hash;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|a", &buf, &buf_len, &options) == FAILURE) {
 		RETURN_FALSE;
@@ -1077,7 +1077,9 @@ PHP_FUNCTION(unserialize)
 
 	p = (const unsigned char*) buf;
 	PHP_VAR_UNSERIALIZE_INIT(var_hash);
-	if(options != NULL) {
+
+	prev_class_hash = php_var_unserialize_get_allowed_classes(var_hash);
+	if (options != NULL) {
 		classes = zend_hash_str_find(Z_ARRVAL_P(options), "allowed_classes", sizeof("allowed_classes")-1);
 		if (classes && Z_TYPE_P(classes) != IS_ARRAY && Z_TYPE_P(classes) != IS_TRUE && Z_TYPE_P(classes) != IS_FALSE) {
 			php_error_docref(NULL, E_WARNING, "allowed_classes option should be array or boolean");
@@ -1104,32 +1106,31 @@ PHP_FUNCTION(unserialize)
 	}
 
 	if (!php_var_unserialize(return_value, &p, p + buf_len, &var_hash)) {
-		PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
-		if (class_hash) {
-			zend_hash_destroy(class_hash);
-			FREE_HASHTABLE(class_hash);
-		}
 		zval_ptr_dtor(return_value);
 		if (!EG(exception)) {
 			php_error_docref(NULL, E_NOTICE, "Error at offset " ZEND_LONG_FMT " of %zd bytes",
 				(zend_long)((char*)p - buf), buf_len);
 		}
-		RETURN_FALSE;
-	}
-	/* We should keep an reference to return_value to prevent it from being dtor
-	   in case nesting calls to unserialize */
-	var_push_dtor(&var_hash, return_value);
+		RETVAL_FALSE;
+	} else {
+		/* We should keep an reference to return_value to prevent it from being dtor
+		   in case nesting calls to unserialize */
+		var_push_dtor(&var_hash, return_value);
 
-	/* Ensure return value is a value */
-	if (Z_ISREF_P(return_value)) {
-		zend_unwrap_reference(return_value);
+		/* Ensure return value is a value */
+		if (Z_ISREF_P(return_value)) {
+			zend_unwrap_reference(return_value);
+		}
 	}
 
-	PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
 	if (class_hash) {
 		zend_hash_destroy(class_hash);
 		FREE_HASHTABLE(class_hash);
 	}
+
+	/* Reset to previous allowed_classes in case this is a nested call */
+	php_var_unserialize_set_allowed_classes(var_hash, prev_class_hash);
+	PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
 }
 /* }}} */
 
diff --git a/ext/standard/var_unserializer.c b/ext/standard/var_unserializer.c
index 18f80a8c7d..f3b997a6ef 100644
--- a/ext/standard/var_unserializer.c
+++ b/ext/standard/var_unserializer.c
@@ -1,4 +1,4 @@
-/* Generated by re2c 0.13.7.5 */
+/* Generated by re2c 0.16 */
 #line 1 "ext/standard/var_unserializer.re"
 /*
   +----------------------------------------------------------------------+
@@ -59,6 +59,9 @@ PHPAPI void php_var_unserialize_destroy(php_unserialize_data_t d) {
 	}
 }
 
+PHPAPI HashTable *php_var_unserialize_get_allowed_classes(php_unserialize_data_t d) {
+	return d->allowed_classes;
+}
 PHPAPI void php_var_unserialize_set_allowed_classes(php_unserialize_data_t d, HashTable *classes) {
 	d->allowed_classes = classes;
 }
@@ -280,7 +283,7 @@ static inline int unserialize_allowed_class(
 #define YYMARKER marker
 
 
-#line 288 "ext/standard/var_unserializer.re"
+#line 291 "ext/standard/var_unserializer.re"
 
 
 
@@ -586,7 +589,7 @@ static int php_var_unserialize_internal(UNSERIALIZE_PARAMETER)
 	start = cursor;
 
 
-#line 590 "ext/standard/var_unserializer.c"
+#line 593 "ext/standard/var_unserializer.c"
 {
 	YYCTYPE yych;
 	static const unsigned char yybm[] = {
@@ -623,112 +626,510 @@ static int php_var_unserialize_internal(UNSERIALIZE_PARAMETER)
 		  0,   0,   0,   0,   0,   0,   0,   0, 
 		  0,   0,   0,   0,   0,   0,   0,   0, 
 	};
-
 	if ((YYLIMIT - YYCURSOR) < 7) YYFILL(7);
 	yych = *YYCURSOR;
 	switch (yych) {
 	case 'C':
-	case 'O':	goto yy13;
+	case 'O':	goto yy4;
 	case 'N':	goto yy5;
-	case 'R':	goto yy2;
-	case 'S':	goto yy10;
-	case 'a':	goto yy11;
-	case 'b':	goto yy6;
-	case 'd':	goto yy8;
-	case 'i':	goto yy7;
+	case 'R':	goto yy6;
+	case 'S':	goto yy7;
+	case 'a':	goto yy8;
+	case 'b':	goto yy9;
+	case 'd':	goto yy10;
+	case 'i':	goto yy11;
 	case 'o':	goto yy12;
-	case 'r':	goto yy4;
-	case 's':	goto yy9;
-	case '}':	goto yy14;
-	default:	goto yy16;
+	case 'r':	goto yy13;
+	case 's':	goto yy14;
+	case '}':	goto yy15;
+	default:	goto yy2;
 	}
 yy2:
-	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy95;
+	++YYCURSOR;
 yy3:
-#line 956 "ext/standard/var_unserializer.re"
+#line 959 "ext/standard/var_unserializer.re"
 	{ return 0; }
-#line 652 "ext/standard/var_unserializer.c"
+#line 653 "ext/standard/var_unserializer.c"
 yy4:
 	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy89;
+	if (yych == ':') goto yy17;
 	goto yy3;
 yy5:
 	yych = *++YYCURSOR;
-	if (yych == ';') goto yy87;
+	if (yych == ';') goto yy19;
 	goto yy3;
 yy6:
 	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy83;
+	if (yych == ':') goto yy21;
 	goto yy3;
 yy7:
 	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy77;
+	if (yych == ':') goto yy22;
 	goto yy3;
 yy8:
 	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy53;
+	if (yych == ':') goto yy23;
 	goto yy3;
 yy9:
 	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy46;
+	if (yych == ':') goto yy24;
 	goto yy3;
 yy10:
 	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy39;
+	if (yych == ':') goto yy25;
 	goto yy3;
 yy11:
 	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy32;
+	if (yych == ':') goto yy26;
 	goto yy3;
 yy12:
 	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy25;
+	if (yych == ':') goto yy27;
 	goto yy3;
 yy13:
 	yych = *(YYMARKER = ++YYCURSOR);
-	if (yych == ':') goto yy17;
+	if (yych == ':') goto yy28;
 	goto yy3;
 yy14:
+	yych = *(YYMARKER = ++YYCURSOR);
+	if (yych == ':') goto yy29;
+	goto yy3;
+yy15:
 	++YYCURSOR;
-#line 950 "ext/standard/var_unserializer.re"
+#line 953 "ext/standard/var_unserializer.re"
 	{
 	/* this is the case where we have less data than planned */
 	php_error_docref(NULL, E_NOTICE, "Unexpected end of serialized data");
 	return 0; /* not sure if it should be 0 or 1 here? */
 }
-#line 701 "ext/standard/var_unserializer.c"
-yy16:
-	yych = *++YYCURSOR;
-	goto yy3;
+#line 706 "ext/standard/var_unserializer.c"
 yy17:
 	yych = *++YYCURSOR;
 	if (yybm[0+yych] & 128) {
-		goto yy20;
+		goto yy31;
 	}
-	if (yych == '+') goto yy19;
+	if (yych == '+') goto yy30;
 yy18:
 	YYCURSOR = YYMARKER;
 	goto yy3;
 yy19:
+	++YYCURSOR;
+#line 648 "ext/standard/var_unserializer.re"
+	{
+	*p = YYCURSOR;
+	ZVAL_NULL(rval);
+	return 1;
+}
+#line 724 "ext/standard/var_unserializer.c"
+yy21:
+	yych = *++YYCURSOR;
+	if (yych <= ',') {
+		if (yych == '+') goto yy33;
+		goto yy18;
+	} else {
+		if (yych <= '-') goto yy33;
+		if (yych <= '/') goto yy18;
+		if (yych <= '9') goto yy34;
+		goto yy18;
+	}
+yy22:
+	yych = *++YYCURSOR;
+	if (yych == '+') goto yy36;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy37;
+	goto yy18;
+yy23:
+	yych = *++YYCURSOR;
+	if (yych == '+') goto yy39;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy40;
+	goto yy18;
+yy24:
+	yych = *++YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych <= '1') goto yy42;
+	goto yy18;
+yy25:
+	yych = *++YYCURSOR;
+	if (yych <= '/') {
+		if (yych <= ',') {
+			if (yych == '+') goto yy43;
+			goto yy18;
+		} else {
+			if (yych <= '-') goto yy44;
+			if (yych <= '.') goto yy45;
+			goto yy18;
+		}
+	} else {
+		if (yych <= 'I') {
+			if (yych <= '9') goto yy46;
+			if (yych <= 'H') goto yy18;
+			goto yy48;
+		} else {
+			if (yych == 'N') goto yy49;
+			goto yy18;
+		}
+	}
+yy26:
+	yych = *++YYCURSOR;
+	if (yych <= ',') {
+		if (yych == '+') goto yy50;
+		goto yy18;
+	} else {
+		if (yych <= '-') goto yy50;
+		if (yych <= '/') goto yy18;
+		if (yych <= '9') goto yy51;
+		goto yy18;
+	}
+yy27:
+	yych = *++YYCURSOR;
+	if (yych <= ',') {
+		if (yych == '+') goto yy53;
+		goto yy18;
+	} else {
+		if (yych <= '-') goto yy53;
+		if (yych <= '/') goto yy18;
+		if (yych <= '9') goto yy54;
+		goto yy18;
+	}
+yy28:
+	yych = *++YYCURSOR;
+	if (yych <= ',') {
+		if (yych == '+') goto yy56;
+		goto yy18;
+	} else {
+		if (yych <= '-') goto yy56;
+		if (yych <= '/') goto yy18;
+		if (yych <= '9') goto yy57;
+		goto yy18;
+	}
+yy29:
+	yych = *++YYCURSOR;
+	if (yych == '+') goto yy59;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy60;
+	goto yy18;
+yy30:
 	yych = *++YYCURSOR;
 	if (yybm[0+yych] & 128) {
-		goto yy20;
+		goto yy31;
 	}
 	goto yy18;
-yy20:
+yy31:
 	++YYCURSOR;
 	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
 	yych = *YYCURSOR;
 	if (yybm[0+yych] & 128) {
-		goto yy20;
+		goto yy31;
 	}
 	if (yych <= '/') goto yy18;
-	if (yych >= ';') goto yy18;
+	if (yych <= ':') goto yy62;
+	goto yy18;
+yy33:
 	yych = *++YYCURSOR;
-	if (yych != '"') goto yy18;
+	if (yych <= '/') goto yy18;
+	if (yych >= ':') goto yy18;
+yy34:
 	++YYCURSOR;
-#line 805 "ext/standard/var_unserializer.re"
+	if (YYLIMIT <= YYCURSOR) YYFILL(1);
+	yych = *YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy34;
+	if (yych == ';') goto yy63;
+	goto yy18;
+yy36:
+	yych = *++YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych >= ':') goto yy18;
+yy37:
+	++YYCURSOR;
+	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
+	yych = *YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy37;
+	if (yych <= ':') goto yy65;
+	goto yy18;
+yy39:
+	yych = *++YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych >= ':') goto yy18;
+yy40:
+	++YYCURSOR;
+	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
+	yych = *YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy40;
+	if (yych <= ':') goto yy66;
+	goto yy18;
+yy42:
+	yych = *++YYCURSOR;
+	if (yych == ';') goto yy67;
+	goto yy18;
+yy43:
+	yych = *++YYCURSOR;
+	if (yych == '.') goto yy45;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy46;
+	goto yy18;
+yy44:
+	yych = *++YYCURSOR;
+	if (yych <= '/') {
+		if (yych != '.') goto yy18;
+	} else {
+		if (yych <= '9') goto yy46;
+		if (yych == 'I') goto yy48;
+		goto yy18;
+	}
+yy45:
+	yych = *++YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy69;
+	goto yy18;
+yy46:
+	++YYCURSOR;
+	if ((YYLIMIT - YYCURSOR) < 4) YYFILL(4);
+	yych = *YYCURSOR;
+	if (yych <= ':') {
+		if (yych <= '.') {
+			if (yych <= '-') goto yy18;
+			goto yy69;
+		} else {
+			if (yych <= '/') goto yy18;
+			if (yych <= '9') goto yy46;
+			goto yy18;
+		}
+	} else {
+		if (yych <= 'E') {
+			if (yych <= ';') goto yy71;
+			if (yych <= 'D') goto yy18;
+			goto yy73;
+		} else {
+			if (yych == 'e') goto yy73;
+			goto yy18;
+		}
+	}
+yy48:
+	yych = *++YYCURSOR;
+	if (yych == 'N') goto yy74;
+	goto yy18;
+yy49:
+	yych = *++YYCURSOR;
+	if (yych == 'A') goto yy75;
+	goto yy18;
+yy50:
+	yych = *++YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych >= ':') goto yy18;
+yy51:
+	++YYCURSOR;
+	if (YYLIMIT <= YYCURSOR) YYFILL(1);
+	yych = *YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy51;
+	if (yych == ';') goto yy76;
+	goto yy18;
+yy53:
+	yych = *++YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych >= ':') goto yy18;
+yy54:
+	++YYCURSOR;
+	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
+	yych = *YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy54;
+	if (yych <= ':') goto yy78;
+	goto yy18;
+yy56:
+	yych = *++YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych >= ':') goto yy18;
+yy57:
+	++YYCURSOR;
+	if (YYLIMIT <= YYCURSOR) YYFILL(1);
+	yych = *YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy57;
+	if (yych == ';') goto yy79;
+	goto yy18;
+yy59:
+	yych = *++YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych >= ':') goto yy18;
+yy60:
+	++YYCURSOR;
+	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
+	yych = *YYCURSOR;
+	if (yych <= '/') goto yy18;
+	if (yych <= '9') goto yy60;
+	if (yych <= ':') goto yy81;
+	goto yy18;
+yy62:
+	yych = *++YYCURSOR;
+	if (yych == '"') goto yy82;
+	goto yy18;
+yy63:
+	++YYCURSOR;
+#line 597 "ext/standard/var_unserializer.re"
+	{
+	zend_long id;
+
+ 	*p = YYCURSOR;
+	if (!var_hash) return 0;
+
+	id = parse_iv(start + 2) - 1;
+	if (id == -1 || (rval_ref = var_access(var_hash, id)) == NULL) {
+		return 0;
+	}
+
+	zval_ptr_dtor(rval);
+	if (Z_ISUNDEF_P(rval_ref) || (Z_ISREF_P(rval_ref) && Z_ISUNDEF_P(Z_REFVAL_P(rval_ref)))) {
+		ZVAL_UNDEF(rval);
+		return 1;
+	}
+	if (Z_ISREF_P(rval_ref)) {
+		ZVAL_COPY(rval, rval_ref);
+	} else {
+		ZVAL_NEW_REF(rval_ref, rval_ref);
+		ZVAL_COPY(rval, rval_ref);
+	}
+
+	return 1;
+}
+#line 1000 "ext/standard/var_unserializer.c"
+yy65:
+	yych = *++YYCURSOR;
+	if (yych == '"') goto yy84;
+	goto yy18;
+yy66:
+	yych = *++YYCURSOR;
+	if (yych == '{') goto yy86;
+	goto yy18;
+yy67:
+	++YYCURSOR;
+#line 654 "ext/standard/var_unserializer.re"
+	{
+	*p = YYCURSOR;
+	ZVAL_BOOL(rval, parse_iv(start + 2));
+	return 1;
+}
+#line 1017 "ext/standard/var_unserializer.c"
+yy69:
+	++YYCURSOR;
+	if ((YYLIMIT - YYCURSOR) < 4) YYFILL(4);
+	yych = *YYCURSOR;
+	if (yych <= ';') {
+		if (yych <= '/') goto yy18;
+		if (yych <= '9') goto yy69;
+		if (yych <= ':') goto yy18;
+	} else {
+		if (yych <= 'E') {
+			if (yych <= 'D') goto yy18;
+			goto yy73;
+		} else {
+			if (yych == 'e') goto yy73;
+			goto yy18;
+		}
+	}
+yy71:
+	++YYCURSOR;
+#line 702 "ext/standard/var_unserializer.re"
+	{
+#if SIZEOF_ZEND_LONG == 4
+use_double:
+#endif
+	*p = YYCURSOR;
+	ZVAL_DOUBLE(rval, zend_strtod((const char *)start + 2, NULL));
+	return 1;
+}
+#line 1046 "ext/standard/var_unserializer.c"
+yy73:
+	yych = *++YYCURSOR;
+	if (yych <= ',') {
+		if (yych == '+') goto yy88;
+		goto yy18;
+	} else {
+		if (yych <= '-') goto yy88;
+		if (yych <= '/') goto yy18;
+		if (yych <= '9') goto yy89;
+		goto yy18;
+	}
+yy74:
+	yych = *++YYCURSOR;
+	if (yych == 'F') goto yy91;
+	goto yy18;
+yy75:
+	yych = *++YYCURSOR;
+	if (yych == 'N') goto yy91;
+	goto yy18;
+yy76:
+	++YYCURSOR;
+#line 660 "ext/standard/var_unserializer.re"
+	{
+#if SIZEOF_ZEND_LONG == 4
+	int digits = YYCURSOR - start - 3;
+
+	if (start[2] == '-' || start[2] == '+') {
+		digits--;
+	}
+
+	/* Use double for large zend_long values that were serialized on a 64-bit system */
+	if (digits >= MAX_LENGTH_OF_LONG - 1) {
+		if (digits == MAX_LENGTH_OF_LONG - 1) {
+			int cmp = strncmp((char*)YYCURSOR - MAX_LENGTH_OF_LONG, long_min_digits, MAX_LENGTH_OF_LONG - 1);
+
+			if (!(cmp < 0 || (cmp == 0 && start[2] == '-'))) {
+				goto use_double;
+			}
+		} else {
+			goto use_double;
+		}
+	}
+#endif
+	*p = YYCURSOR;
+	ZVAL_LONG(rval, parse_iv(start + 2));
+	return 1;
+}
+#line 1094 "ext/standard/var_unserializer.c"
+yy78:
+	yych = *++YYCURSOR;
+	if (yych == '"') goto yy92;
+	goto yy18;
+yy79:
+	++YYCURSOR;
+#line 623 "ext/standard/var_unserializer.re"
+	{
+	zend_long id;
+
+ 	*p = YYCURSOR;
+	if (!var_hash) return 0;
+
+	id = parse_iv(start + 2) - 1;
+	if (id == -1 || (rval_ref = var_access(var_hash, id)) == NULL) {
+		return 0;
+	}
+
+	if (rval_ref == rval) {
+		return 0;
+	}
+
+	if (Z_ISUNDEF_P(rval_ref) || (Z_ISREF_P(rval_ref) && Z_ISUNDEF_P(Z_REFVAL_P(rval_ref)))) {
+		ZVAL_UNDEF(rval);
+		return 1;
+	}
+
+	ZVAL_COPY(rval, rval_ref);
+
+	return 1;
+}
+#line 1126 "ext/standard/var_unserializer.c"
+yy81:
+	yych = *++YYCURSOR;
+	if (yych == '"') goto yy94;
+	goto yy18;
+yy82:
+	++YYCURSOR;
+#line 808 "ext/standard/var_unserializer.re"
 	{
 	size_t len, len2, len3, maxlen;
 	zend_long elements;
@@ -873,105 +1274,10 @@ yy20:
 
 	return object_common2(UNSERIALIZE_PASSTHRU, elements);
 }
-#line 877 "ext/standard/var_unserializer.c"
-yy25:
-	yych = *++YYCURSOR;
-	if (yych <= ',') {
-		if (yych != '+') goto yy18;
-	} else {
-		if (yych <= '-') goto yy26;
-		if (yych <= '/') goto yy18;
-		if (yych <= '9') goto yy27;
-		goto yy18;
-	}
-yy26:
-	yych = *++YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych >= ':') goto yy18;
-yy27:
+#line 1278 "ext/standard/var_unserializer.c"
+yy84:
 	++YYCURSOR;
-	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
-	yych = *YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy27;
-	if (yych >= ';') goto yy18;
-	yych = *++YYCURSOR;
-	if (yych != '"') goto yy18;
-	++YYCURSOR;
-#line 798 "ext/standard/var_unserializer.re"
-	{
-    if (!var_hash) return 0;
-
-	return object_common2(UNSERIALIZE_PASSTHRU,
-			object_common1(UNSERIALIZE_PASSTHRU, ZEND_STANDARD_CLASS_DEF_PTR));
-}
-#line 909 "ext/standard/var_unserializer.c"
-yy32:
-	yych = *++YYCURSOR;
-	if (yych == '+') goto yy33;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy34;
-	goto yy18;
-yy33:
-	yych = *++YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych >= ':') goto yy18;
-yy34:
-	++YYCURSOR;
-	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
-	yych = *YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy34;
-	if (yych >= ';') goto yy18;
-	yych = *++YYCURSOR;
-	if (yych != '{') goto yy18;
-	++YYCURSOR;
-#line 774 "ext/standard/var_unserializer.re"
-	{
-	zend_long elements = parse_iv(start + 2);
-	/* use iv() not uiv() in order to check data range */
-	*p = YYCURSOR;
-    if (!var_hash) return 0;
-
-	if (elements < 0) {
-		return 0;
-	}
-
-	array_init_size(rval, elements);
-	if (elements) {
-		/* we can't convert from packed to hash during unserialization, because
-		   reference to some zvals might be keept in var_hash (to support references) */
-		zend_hash_real_init(Z_ARRVAL_P(rval), 0);
-	}
-
-	if (!process_nested_data(UNSERIALIZE_PASSTHRU, Z_ARRVAL_P(rval), elements, 0)) {
-		return 0;
-	}
-
-	return finish_nested_data(UNSERIALIZE_PASSTHRU);
-}
-#line 954 "ext/standard/var_unserializer.c"
-yy39:
-	yych = *++YYCURSOR;
-	if (yych == '+') goto yy40;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy41;
-	goto yy18;
-yy40:
-	yych = *++YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych >= ':') goto yy18;
-yy41:
-	++YYCURSOR;
-	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
-	yych = *YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy41;
-	if (yych >= ';') goto yy18;
-	yych = *++YYCURSOR;
-	if (yych != '"') goto yy18;
-	++YYCURSOR;
-#line 740 "ext/standard/var_unserializer.re"
+#line 743 "ext/standard/var_unserializer.re"
 	{
 	size_t len, maxlen;
 	zend_string *str;
@@ -1005,407 +1311,127 @@ yy41:
 	ZVAL_STR(rval, str);
 	return 1;
 }
-#line 1009 "ext/standard/var_unserializer.c"
-yy46:
-	yych = *++YYCURSOR;
-	if (yych == '+') goto yy47;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy48;
-	goto yy18;
-yy47:
-	yych = *++YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych >= ':') goto yy18;
-yy48:
-	++YYCURSOR;
-	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
-	yych = *YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy48;
-	if (yych >= ';') goto yy18;
-	yych = *++YYCURSOR;
-	if (yych != '"') goto yy18;
+#line 1315 "ext/standard/var_unserializer.c"
+yy86:
 	++YYCURSOR;
-#line 708 "ext/standard/var_unserializer.re"
+#line 777 "ext/standard/var_unserializer.re"
 	{
-	size_t len, maxlen;
-	char *str;
+	zend_long elements = parse_iv(start + 2);
+	/* use iv() not uiv() in order to check data range */
+	*p = YYCURSOR;
+    if (!var_hash) return 0;
 
-	len = parse_uiv(start + 2);
-	maxlen = max - YYCURSOR;
-	if (maxlen < len) {
-		*p = start + 2;
+	if (elements < 0) {
 		return 0;
 	}
 
-	str = (char*)YYCURSOR;
-
-	YYCURSOR += len;
-
-	if (*(YYCURSOR) != '"') {
-		*p = YYCURSOR;
-		return 0;
+	array_init_size(rval, elements);
+	if (elements) {
+		/* we can't convert from packed to hash during unserialization, because
+		   reference to some zvals might be keept in var_hash (to support references) */
+		zend_hash_real_init(Z_ARRVAL_P(rval), 0);
 	}
 
-	if (*(YYCURSOR + 1) != ';') {
-		*p = YYCURSOR + 1;
+	if (!process_nested_data(UNSERIALIZE_PASSTHRU, Z_ARRVAL_P(rval), elements, 0)) {
 		return 0;
 	}
 
-	YYCURSOR += 2;
-	*p = YYCURSOR;
-
-	ZVAL_STRINGL(rval, str, len);
-	return 1;
-}
-#line 1062 "ext/standard/var_unserializer.c"
-yy53:
-	yych = *++YYCURSOR;
-	if (yych <= '/') {
-		if (yych <= ',') {
-			if (yych == '+') goto yy57;
-			goto yy18;
-		} else {
-			if (yych <= '-') goto yy55;
-			if (yych <= '.') goto yy60;
-			goto yy18;
-		}
-	} else {
-		if (yych <= 'I') {
-			if (yych <= '9') goto yy58;
-			if (yych <= 'H') goto yy18;
-			goto yy56;
-		} else {
-			if (yych != 'N') goto yy18;
-		}
-	}
-	yych = *++YYCURSOR;
-	if (yych == 'A') goto yy76;
-	goto yy18;
-yy55:
-	yych = *++YYCURSOR;
-	if (yych <= '/') {
-		if (yych == '.') goto yy60;
-		goto yy18;
-	} else {
-		if (yych <= '9') goto yy58;
-		if (yych != 'I') goto yy18;
-	}
-yy56:
-	yych = *++YYCURSOR;
-	if (yych == 'N') goto yy72;
-	goto yy18;
-yy57:
-	yych = *++YYCURSOR;
-	if (yych == '.') goto yy60;
-	if (yych <= '/') goto yy18;
-	if (yych >= ':') goto yy18;
-yy58:
-	++YYCURSOR;
-	if ((YYLIMIT - YYCURSOR) < 4) YYFILL(4);
-	yych = *YYCURSOR;
-	if (yych <= ':') {
-		if (yych <= '.') {
-			if (yych <= '-') goto yy18;
-			goto yy70;
-		} else {
-			if (yych <= '/') goto yy18;
-			if (yych <= '9') goto yy58;
-			goto yy18;
-		}
-	} else {
-		if (yych <= 'E') {
-			if (yych <= ';') goto yy63;
-			if (yych <= 'D') goto yy18;
-			goto yy65;
-		} else {
-			if (yych == 'e') goto yy65;
-			goto yy18;
-		}
-	}
-yy60:
-	yych = *++YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych >= ':') goto yy18;
-yy61:
-	++YYCURSOR;
-	if ((YYLIMIT - YYCURSOR) < 4) YYFILL(4);
-	yych = *YYCURSOR;
-	if (yych <= ';') {
-		if (yych <= '/') goto yy18;
-		if (yych <= '9') goto yy61;
-		if (yych <= ':') goto yy18;
-	} else {
-		if (yych <= 'E') {
-			if (yych <= 'D') goto yy18;
-			goto yy65;
-		} else {
-			if (yych == 'e') goto yy65;
-			goto yy18;
-		}
-	}
-yy63:
-	++YYCURSOR;
-#line 699 "ext/standard/var_unserializer.re"
-	{
-#if SIZEOF_ZEND_LONG == 4
-use_double:
-#endif
-	*p = YYCURSOR;
-	ZVAL_DOUBLE(rval, zend_strtod((const char *)start + 2, NULL));
-	return 1;
+	return finish_nested_data(UNSERIALIZE_PASSTHRU);
 }
-#line 1159 "ext/standard/var_unserializer.c"
-yy65:
+#line 1342 "ext/standard/var_unserializer.c"
+yy88:
 	yych = *++YYCURSOR;
 	if (yych <= ',') {
-		if (yych != '+') goto yy18;
-	} else {
-		if (yych <= '-') goto yy66;
-		if (yych <= '/') goto yy18;
-		if (yych <= '9') goto yy67;
-		goto yy18;
-	}
-yy66:
-	yych = *++YYCURSOR;
-	if (yych <= ',') {
-		if (yych == '+') goto yy69;
+		if (yych == '+') goto yy96;
 		goto yy18;
 	} else {
-		if (yych <= '-') goto yy69;
+		if (yych <= '-') goto yy96;
 		if (yych <= '/') goto yy18;
 		if (yych >= ':') goto yy18;
 	}
-yy67:
+yy89:
 	++YYCURSOR;
 	if (YYLIMIT <= YYCURSOR) YYFILL(1);
 	yych = *YYCURSOR;
 	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy67;
-	if (yych == ';') goto yy63;
+	if (yych <= '9') goto yy89;
+	if (yych == ';') goto yy71;
 	goto yy18;
-yy69:
+yy91:
 	yych = *++YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy67;
+	if (yych == ';') goto yy97;
 	goto yy18;
-yy70:
-	++YYCURSOR;
-	if ((YYLIMIT - YYCURSOR) < 4) YYFILL(4);
-	yych = *YYCURSOR;
-	if (yych <= ';') {
-		if (yych <= '/') goto yy18;
-		if (yych <= '9') goto yy70;
-		if (yych <= ':') goto yy18;
-		goto yy63;
-	} else {
-		if (yych <= 'E') {
-			if (yych <= 'D') goto yy18;
-			goto yy65;
-		} else {
-			if (yych == 'e') goto yy65;
-			goto yy18;
-		}
-	}
-yy72:
-	yych = *++YYCURSOR;
-	if (yych != 'F') goto yy18;
-yy73:
-	yych = *++YYCURSOR;
-	if (yych != ';') goto yy18;
+yy92:
 	++YYCURSOR;
-#line 683 "ext/standard/var_unserializer.re"
+#line 801 "ext/standard/var_unserializer.re"
 	{
-	*p = YYCURSOR;
-
-	if (!strncmp((char*)start + 2, "NAN", 3)) {
-		ZVAL_DOUBLE(rval, php_get_nan());
-	} else if (!strncmp((char*)start + 2, "INF", 3)) {
-		ZVAL_DOUBLE(rval, php_get_inf());
-	} else if (!strncmp((char*)start + 2, "-INF", 4)) {
-		ZVAL_DOUBLE(rval, -php_get_inf());
-	} else {
-		ZVAL_NULL(rval);
-	}
+    if (!var_hash) return 0;
 
-	return 1;
+	return object_common2(UNSERIALIZE_PASSTHRU,
+			object_common1(UNSERIALIZE_PASSTHRU, ZEND_STANDARD_CLASS_DEF_PTR));
 }
-#line 1234 "ext/standard/var_unserializer.c"
-yy76:
-	yych = *++YYCURSOR;
-	if (yych == 'N') goto yy73;
-	goto yy18;
-yy77:
-	yych = *++YYCURSOR;
-	if (yych <= ',') {
-		if (yych != '+') goto yy18;
-	} else {
-		if (yych <= '-') goto yy78;
-		if (yych <= '/') goto yy18;
-		if (yych <= '9') goto yy79;
-		goto yy18;
-	}
-yy78:
-	yych = *++YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych >= ':') goto yy18;
-yy79:
+#line 1374 "ext/standard/var_unserializer.c"
+yy94:
 	++YYCURSOR;
-	if (YYLIMIT <= YYCURSOR) YYFILL(1);
-	yych = *YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy79;
-	if (yych != ';') goto yy18;
-	++YYCURSOR;
-#line 657 "ext/standard/var_unserializer.re"
+#line 711 "ext/standard/var_unserializer.re"
 	{
-#if SIZEOF_ZEND_LONG == 4
-	int digits = YYCURSOR - start - 3;
+	size_t len, maxlen;
+	char *str;
 
-	if (start[2] == '-' || start[2] == '+') {
-		digits--;
+	len = parse_uiv(start + 2);
+	maxlen = max - YYCURSOR;
+	if (maxlen < len) {
+		*p = start + 2;
+		return 0;
 	}
 
-	/* Use double for large zend_long values that were serialized on a 64-bit system */
-	if (digits >= MAX_LENGTH_OF_LONG - 1) {
-		if (digits == MAX_LENGTH_OF_LONG - 1) {
-			int cmp = strncmp((char*)YYCURSOR - MAX_LENGTH_OF_LONG, long_min_digits, MAX_LENGTH_OF_LONG - 1);
-
-			if (!(cmp < 0 || (cmp == 0 && start[2] == '-'))) {
-				goto use_double;
-			}
-		} else {
-			goto use_double;
-		}
-	}
-#endif
-	*p = YYCURSOR;
-	ZVAL_LONG(rval, parse_iv(start + 2));
-	return 1;
-}
-#line 1287 "ext/standard/var_unserializer.c"
-yy83:
-	yych = *++YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych >= '2') goto yy18;
-	yych = *++YYCURSOR;
-	if (yych != ';') goto yy18;
-	++YYCURSOR;
-#line 651 "ext/standard/var_unserializer.re"
-	{
-	*p = YYCURSOR;
-	ZVAL_BOOL(rval, parse_iv(start + 2));
-	return 1;
-}
-#line 1301 "ext/standard/var_unserializer.c"
-yy87:
-	++YYCURSOR;
-#line 645 "ext/standard/var_unserializer.re"
-	{
-	*p = YYCURSOR;
-	ZVAL_NULL(rval);
-	return 1;
-}
-#line 1310 "ext/standard/var_unserializer.c"
-yy89:
-	yych = *++YYCURSOR;
-	if (yych <= ',') {
-		if (yych != '+') goto yy18;
-	} else {
-		if (yych <= '-') goto yy90;
-		if (yych <= '/') goto yy18;
-		if (yych <= '9') goto yy91;
-		goto yy18;
-	}
-yy90:
-	yych = *++YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych >= ':') goto yy18;
-yy91:
-	++YYCURSOR;
-	if (YYLIMIT <= YYCURSOR) YYFILL(1);
-	yych = *YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy91;
-	if (yych != ';') goto yy18;
-	++YYCURSOR;
-#line 620 "ext/standard/var_unserializer.re"
-	{
-	zend_long id;
+	str = (char*)YYCURSOR;
 
- 	*p = YYCURSOR;
-	if (!var_hash) return 0;
+	YYCURSOR += len;
 
-	id = parse_iv(start + 2) - 1;
-	if (id == -1 || (rval_ref = var_access(var_hash, id)) == NULL) {
+	if (*(YYCURSOR) != '"') {
+		*p = YYCURSOR;
 		return 0;
 	}
 
-	if (rval_ref == rval) {
+	if (*(YYCURSOR + 1) != ';') {
+		*p = YYCURSOR + 1;
 		return 0;
 	}
 
-	if (Z_ISUNDEF_P(rval_ref) || (Z_ISREF_P(rval_ref) && Z_ISUNDEF_P(Z_REFVAL_P(rval_ref)))) {
-		ZVAL_UNDEF(rval);
-		return 1;
-	}
-
-	ZVAL_COPY(rval, rval_ref);
+	YYCURSOR += 2;
+	*p = YYCURSOR;
 
+	ZVAL_STRINGL(rval, str, len);
 	return 1;
 }
-#line 1358 "ext/standard/var_unserializer.c"
-yy95:
-	yych = *++YYCURSOR;
-	if (yych <= ',') {
-		if (yych != '+') goto yy18;
-	} else {
-		if (yych <= '-') goto yy96;
-		if (yych <= '/') goto yy18;
-		if (yych <= '9') goto yy97;
-		goto yy18;
-	}
+#line 1409 "ext/standard/var_unserializer.c"
 yy96:
 	yych = *++YYCURSOR;
 	if (yych <= '/') goto yy18;
-	if (yych >= ':') goto yy18;
+	if (yych <= '9') goto yy89;
+	goto yy18;
 yy97:
 	++YYCURSOR;
-	if (YYLIMIT <= YYCURSOR) YYFILL(1);
-	yych = *YYCURSOR;
-	if (yych <= '/') goto yy18;
-	if (yych <= '9') goto yy97;
-	if (yych != ';') goto yy18;
-	++YYCURSOR;
-#line 594 "ext/standard/var_unserializer.re"
+#line 686 "ext/standard/var_unserializer.re"
 	{
-	zend_long id;
-
- 	*p = YYCURSOR;
-	if (!var_hash) return 0;
-
-	id = parse_iv(start + 2) - 1;
-	if (id == -1 || (rval_ref = var_access(var_hash, id)) == NULL) {
-		return 0;
-	}
+	*p = YYCURSOR;
 
-	zval_ptr_dtor(rval);
-	if (Z_ISUNDEF_P(rval_ref) || (Z_ISREF_P(rval_ref) && Z_ISUNDEF_P(Z_REFVAL_P(rval_ref)))) {
-		ZVAL_UNDEF(rval);
-		return 1;
-	}
-	if (Z_ISREF_P(rval_ref)) {
-		ZVAL_COPY(rval, rval_ref);
+	if (!strncmp((char*)start + 2, "NAN", 3)) {
+		ZVAL_DOUBLE(rval, php_get_nan());
+	} else if (!strncmp((char*)start + 2, "INF", 3)) {
+		ZVAL_DOUBLE(rval, php_get_inf());
+	} else if (!strncmp((char*)start + 2, "-INF", 4)) {
+		ZVAL_DOUBLE(rval, -php_get_inf());
 	} else {
-		ZVAL_NEW_REF(rval_ref, rval_ref);
-		ZVAL_COPY(rval, rval_ref);
+		ZVAL_NULL(rval);
 	}
 
 	return 1;
 }
-#line 1407 "ext/standard/var_unserializer.c"
+#line 1433 "ext/standard/var_unserializer.c"
 }
-#line 958 "ext/standard/var_unserializer.re"
+#line 961 "ext/standard/var_unserializer.re"
 
 
 	return 0;
diff --git a/ext/standard/var_unserializer.re b/ext/standard/var_unserializer.re
index bbf4009f71..6d53cb6249 100644
--- a/ext/standard/var_unserializer.re
+++ b/ext/standard/var_unserializer.re
@@ -57,6 +57,9 @@ PHPAPI void php_var_unserialize_destroy(php_unserialize_data_t d) {
 	}
 }
 
+PHPAPI HashTable *php_var_unserialize_get_allowed_classes(php_unserialize_data_t d) {
+	return d->allowed_classes;
+}
 PHPAPI void php_var_unserialize_set_allowed_classes(php_unserialize_data_t d, HashTable *classes) {
 	d->allowed_classes = classes;
 }