Merge branch '2.8' into 3.1

* 2.8:
  always check for all fields to be mapped
  clarify exception when no args are configured
  [PropertyAccess] Handle interfaces in the invalid argument exception
  [DI] Fix defaults overriding empty strings in AutowirePass
  [Debug] Workaround "null" $context
  [Debug] Remove $context arg from handleError(), preparing for PHP 7.2
  [Routing] Fix BC break in AnnotationClassLoader defaults attributes handling
  Fix tests with ICU 57.1
  Fix the condition checking the minimum ICU version

ErrorHandler.php

@@ -348,12 +348,10 @@ class ErrorHandler
     /**
      * Handles errors by filtering then logging them according to the configured bit fields.
      *
-     * @param int    $type      One of the E_* constants
+     * @param int    $type    One of the E_* constants
      * @param string $message
      * @param string $file
      * @param int    $line
-     * @param array  $context
-     * @param array  $backtrace
      *
      * @return bool Returns false when no handling happens so that the PHP engine can handle the error itself
      *
@@ -361,7 +359,7 @@ class ErrorHandler
      *
      * @internal
      */
-    public function handleError($type, $message, $file, $line, array $context, array $backtrace = null)
+    public function handleError($type, $message, $file, $line)
     {
         $level = error_reporting() | E_RECOVERABLE_ERROR | E_USER_ERROR | E_DEPRECATED | E_USER_DEPRECATED;
         $log = $this->loggedErrors & $type;
@@ -371,9 +369,20 @@ class ErrorHandler
         if (!$type || (!$log && !$throw)) {
             return $type && $log;
         }
+        $scope = $this->scopedErrors & $type;
 
-        if (isset($context['GLOBALS']) && ($this->scopedErrors & $type)) {
-            unset($context['GLOBALS']);
+        if (4 < $numArgs = func_num_args()) {
+            $context = $scope ? (func_get_arg(4) ?: array()) : array();
+            $backtrace = 5 < $numArgs ? func_get_arg(5) : null; // defined on HHVM
+        } else {
+            $context = array();
+            $backtrace = null;
+        }
+
+        if (isset($context['GLOBALS']) && $scope) {
+            $e = $context;                  // Whatever the signature of the method,
+            unset($e['GLOBALS'], $context); // $context is always a reference in 5.3
+            $context = $e;
         }
 
         if (null !== $backtrace && $type & E_ERROR) {
@@ -389,7 +398,8 @@ class ErrorHandler
             if (null !== self::$toStringException) {
                 $throw = self::$toStringException;
                 self::$toStringException = null;
-            } elseif (($this->scopedErrors & $type) && class_exists(ContextErrorException::class)) {
+            } elseif ($scope && class_exists(ContextErrorException::class)) {
+                // Checking for class existence is a work around for https://bugs.php.net/42098
                 $throw = new ContextErrorException($this->levels[$type].': '.$message, 0, $type, $file, $line, $context);
             } else {
                 $throw = new \ErrorException($this->levels[$type].': '.$message, 0, $type, $file, $line);
@@ -452,7 +462,7 @@ class ErrorHandler
         $e = compact('type', 'file', 'line', 'level');
 
         if ($type & $level) {
-            if ($this->scopedErrors & $type) {
+            if ($scope) {
                 $e['scope_vars'] = $context;
                 if ($trace) {
                     $e['stack'] = $backtrace ?: debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT);

FatalErrorHandler/ClassNotFoundFatalErrorHandler.php

@@ -173,7 +173,7 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
         );
 
         if ($prefix) {
-            $candidates = array_filter($candidates, function ($candidate) use ($prefix) {return 0 === strpos($candidate, $prefix);});
+            $candidates = array_filter($candidates, function ($candidate) use ($prefix) { return 0 === strpos($candidate, $prefix); });
         }
 
         // We cannot use the autoloader here as most of them use require; but if the class