Fixed bug #76936

Author: nikic

NEWS

@@ -7,6 +7,10 @@ PHP                                                                        NEWS
     (Nikita)
   . Fixed bug #76946 (Cyclic reference in generator not detected). (Nikita)
 
+- Reflection:
+  . Fixed bug #76936 (Objects cannot access their private attributes while
+    handling reflection errors). (Nikita)
+
 11 Oct 2018, PHP 7.2.11
 
 - Core:

Zend/zend.c

@@ -1117,6 +1117,7 @@ static ZEND_COLD void zend_error_va_list(int type, const char *format, va_list a
 	zend_stack loop_var_stack;
 	zend_stack delayed_oplines_stack;
 	zend_array *symbol_table;
+	zend_class_entry *orig_fake_scope;
 
 	/* Report about uncaught exception in case of fatal errors */
 	if (EG(exception)) {
@@ -1271,6 +1272,9 @@ static ZEND_COLD void zend_error_va_list(int type, const char *format, va_list a
 				CG(in_compilation) = 0;
 			}
 
+			orig_fake_scope = EG(fake_scope);
+			EG(fake_scope) = NULL;
+
 			if (call_user_function_ex(CG(function_table), NULL, &orig_user_error_handler, &retval, 5, params, 1, NULL) == SUCCESS) {
 				if (Z_TYPE(retval) != IS_UNDEF) {
 					if (Z_TYPE(retval) == IS_FALSE) {
@@ -1283,6 +1287,8 @@ static ZEND_COLD void zend_error_va_list(int type, const char *format, va_list a
 				zend_error_cb(type, error_filename, error_lineno, format, args);
 			}
 
+			EG(fake_scope) = orig_fake_scope;
+
 			if (in_compilation) {
 				CG(active_class_entry) = saved_class_entry;
 				RESTORE_STACK(loop_var_stack);

ext/reflection/tests/bug76936.phpt

@@ -0,0 +1,45 @@
+--TEST--
+Bug #76936: Objects cannot access their private attributes while handling reflection errors
+--FILE--
+<?php
+
+class Foo {
+    public $dummy1;
+    public $dummy2;
+}
+
+class ErrorHandler {
+    private $private = 'THIS IS PRIVATE'."\n";
+
+    function __construct() {
+        set_error_handler(
+            function ($errno, $errstr, $errfile, $errline) {
+                $this->handleError($errno, $errstr, $errfile, $errline);
+            }
+        );
+    }
+
+    private function handleError($errno, $errstr, $errfile, $errline, $errmodule = null) {
+        echo __METHOD__. " dealing with error $errstr\n";
+
+        // This attribute is no longer accessible in this object.  Same for other
+        // objects and their private attributes once we reach in this state.
+        echo $this->private;
+    }
+}
+
+$errorHandler = new ErrorHandler();
+
+$f = new Foo;
+unset($f->dummy2);
+
+foreach ((new ReflectionObject($f))->getProperties() as $p) {
+    echo $p->getName() .' = '. $p->getValue($f) ."\n";
+}
+
+?>
+--EXPECT--
+dummy1 = 
+ErrorHandler::handleError dealing with error Undefined property: Foo::$dummy2
+THIS IS PRIVATE
+dummy2 =