Fix #79487: ::getStaticProperties() ignores property modifications

When retrieving the static class properties via reflection, we have to
cater to possible modifications.

NEWS

@@ -5,6 +5,10 @@ PHP                                                                        NEWS
 - FTP:
   . Fixed bug #55857 (ftp_size on large files). (cmb)
 
+- Reflection:
+  . Fixed bug #79487 (::getStaticProperties() ignores property modifications).
+    (cmb, Nikita)
+
 ?? ??? 2020, PHP 7.4.8
 
 - Core:

ext/reflection/php_reflection.c

@@ -3726,9 +3726,7 @@ static void add_class_vars(zend_class_entry *ce, int statics, zval *return_value
 	zend_string *key;
 
 	ZEND_HASH_FOREACH_STR_KEY_PTR(&ce->properties_info, key, prop_info) {
-		if (((prop_info->flags & ZEND_ACC_PROTECTED) &&
+		if (((prop_info->flags & ZEND_ACC_PRIVATE) &&
-		     !zend_check_protected(prop_info->ce, ce)) ||
-		    ((prop_info->flags & ZEND_ACC_PRIVATE) &&
 		     prop_info->ce != ce)) {
 			continue;
 		}
@@ -3766,6 +3764,9 @@ ZEND_METHOD(reflection_class, getStaticProperties)
 {
 	reflection_object *intern;
 	zend_class_entry *ce;
+	zend_property_info *prop_info;
+	zval *prop;
+	zend_string *key;
 
 	if (zend_parse_parameters_none() == FAILURE) {
 		return;
@@ -3777,8 +3778,34 @@ ZEND_METHOD(reflection_class, getStaticProperties)
 		return;
 	}
 
+	if (ce->default_static_members_count && !CE_STATIC_MEMBERS(ce)) {
+		zend_class_init_statics(ce);
+	}
+
 	array_init(return_value);
-	add_class_vars(ce, 1, return_value);
+
+	ZEND_HASH_FOREACH_STR_KEY_PTR(&ce->properties_info, key, prop_info) {
+		if (((prop_info->flags & ZEND_ACC_PRIVATE) &&
+		     prop_info->ce != ce)) {
+			continue;
+		}
+		if ((prop_info->flags & ZEND_ACC_STATIC) == 0) {
+			continue;
+		}
+
+		prop = &CE_STATIC_MEMBERS(ce)[prop_info->offset];
+		ZVAL_DEINDIRECT(prop);
+
+		if (prop_info->type && Z_ISUNDEF_P(prop)) {
+			continue;
+		}
+
+		/* enforce read only access */
+		ZVAL_DEREF(prop);
+		Z_TRY_ADDREF_P(prop);
+
+		zend_hash_update(Z_ARRVAL_P(return_value), key, prop);
+	} ZEND_HASH_FOREACH_END();
 }
 /* }}} */
 

ext/reflection/tests/bug79487.phpt

@@ -0,0 +1,34 @@
+--TEST--
+Bug #79487 (::getStaticProperties() ignores property modifications)
+--FILE--
+<?php
+class Foo {
+    public static $bar = 'orig';
+}
+
+Foo::$bar = 'new';
+$rc = new ReflectionClass('Foo');
+var_dump($rc->getStaticProperties());
+
+class A {
+  public static $a = 'A old';
+}
+class B extends A {
+  public static $b = 'B old';
+}
+
+$rc = new ReflectionClass(B::class);
+A::$a = 'A new';
+var_dump($rc->getStaticProperties());
+?>
+--EXPECT--
+array(1) {
+  ["bar"]=>
+  string(3) "new"
+}
+array(2) {
+  ["b"]=>
+  string(5) "B old"
+  ["a"]=>
+  string(5) "A new"
+}