Merge branch '3.3' into 3.4

* 3.3:
  fix merge
  [Translation] Fix InvalidArgumentException when using untranslated plural forms from .po files
  Fixed exit code with non-integer throwable code
  Add suggestions
  Added instructions to upgrade Symfony applications to 4.x

DebugClassLoader.php

@@ -31,7 +31,6 @@ class DebugClassLoader
     private static $final = array();
     private static $finalMethods = array();
     private static $deprecated = array();
-    private static $deprecatedMethods = array();
     private static $internal = array();
     private static $internalMethods = array();
     private static $php7Reserved = array('int', 'float', 'bool', 'string', 'true', 'false', 'null');
@@ -204,12 +203,11 @@ class DebugClassLoader
                 }
             }
 
-            // Inherit @final and @deprecated annotations for methods
+            // Inherit @final and @internal annotations for methods
             self::$finalMethods[$name] = array();
-            self::$deprecatedMethods[$name] = array();
             self::$internalMethods[$name] = array();
             foreach ($parentAndTraits as $use) {
-                foreach (array('finalMethods', 'deprecatedMethods', 'internalMethods') as $property) {
+                foreach (array('finalMethods', 'internalMethods') as $property) {
                     if (isset(self::${$property}[$use])) {
                         self::${$property}[$name] = array_merge(self::${$property}[$name], self::${$property}[$use]);
                     }
@@ -233,12 +231,6 @@ class DebugClassLoader
                 }
 
                 foreach ($parentAndTraits as $use) {
-                    if (isset(self::$deprecatedMethods[$use][$method->name])) {
-                        list($declaringClass, $message) = self::$deprecatedMethods[$use][$method->name];
-                        if (strncmp($ns, $declaringClass, $len)) {
-                            @trigger_error(sprintf('The "%s::%s()" method is deprecated%s. You should not extend it from "%s".', $declaringClass, $method->name, $message, $name), E_USER_DEPRECATED);
-                        }
-                    }
                     if (isset(self::$internalMethods[$use][$method->name])) {
                         list($declaringClass, $message) = self::$internalMethods[$use][$method->name];
                         if (strncmp($ns, $declaringClass, $len)) {
@@ -252,7 +244,7 @@ class DebugClassLoader
                     continue;
                 }
 
-                foreach (array('final', 'deprecated', 'internal') as $annotation) {
+                foreach (array('final', 'internal') as $annotation) {
                     if (false !== strpos($doc, '@'.$annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$)#s', $doc, $notice)) {
                         $message = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
                         self::${$annotation.'Methods'}[$name][$method->name] = array($name, $message);

ErrorHandler.php

@@ -409,21 +409,25 @@ class ErrorHandler
             $errorAsException = self::$toStringException;
             self::$toStringException = null;
         } elseif (!$throw && !($type & $level)) {
-            if (isset(self::$silencedErrorCache[$message])) {
-                $lightTrace = null;
-                $errorAsException = self::$silencedErrorCache[$message];
-                ++$errorAsException->count;
-            } else {
+            if (!isset(self::$silencedErrorCache[$id = $file.':'.$line])) {
                 $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3), $type, $file, $line, false) : array();
                 $errorAsException = new SilencedErrorContext($type, $file, $line, $lightTrace);
+            } elseif (isset(self::$silencedErrorCache[$id][$message])) {
+                $lightTrace = null;
+                $errorAsException = self::$silencedErrorCache[$id][$message];
+                ++$errorAsException->count;
+            } else {
+                $lightTrace = array();
+                $errorAsException = null;
             }
 
             if (100 < ++self::$silencedErrorCount) {
                 self::$silencedErrorCache = $lightTrace = array();
                 self::$silencedErrorCount = 1;
             }
-            self::$silencedErrorCache[$message] = $errorAsException;
-
+            if ($errorAsException) {
+                self::$silencedErrorCache[$id][$message] = $errorAsException;
+            }
             if (null === $lightTrace) {
                 return;
             }
@@ -494,13 +498,13 @@ class ErrorHandler
                 $this->loggers[$type][0],
                 ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG,
                 $logMessage,
-                array('exception' => $errorAsException),
+                $errorAsException ? array('exception' => $errorAsException) : array(),
             );
         } else {
             try {
                 $this->isRecursive = true;
                 $level = ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG;
-                $this->loggers[$type][0]->log($level, $logMessage, array('exception' => $errorAsException));
+                $this->loggers[$type][0]->log($level, $logMessage, $errorAsException ? array('exception' => $errorAsException) : array());
             } finally {
                 $this->isRecursive = false;
             }
@@ -526,6 +530,7 @@ class ErrorHandler
             $exception = new FatalThrowableError($exception);
         }
         $type = $exception instanceof FatalErrorException ? $exception->getSeverity() : E_ERROR;
+        $handlerException = null;
 
         if (($this->loggedErrors & $type) || $exception instanceof FatalThrowableError) {
             if ($exception instanceof FatalErrorException) {
@@ -560,18 +565,20 @@ class ErrorHandler
                 }
             }
         }
-        if (empty($this->exceptionHandler)) {
-            throw $exception; // Give back $exception to the native handler
-        }
         try {
-            call_user_func($this->exceptionHandler, $exception);
+            if (null !== $this->exceptionHandler) {
+                return \call_user_func($this->exceptionHandler, $exception);
+            }
+            $handlerException = $handlerException ?: $exception;
         } catch (\Exception $handlerException) {
         } catch (\Throwable $handlerException) {
         }
-        if (isset($handlerException)) {
-            $this->exceptionHandler = null;
-            $this->handleException($handlerException);
+        $this->exceptionHandler = null;
+        if ($exception === $handlerException) {
+            self::$reservedMemory = null; // Disable the fatal error handler
+            throw $exception; // Give back $exception to the native handler
         }
+        $this->handleException($handlerException);
     }
 
     /**
@@ -587,15 +594,30 @@ class ErrorHandler
             return;
         }
 
-        self::$reservedMemory = null;
+        $handler = self::$reservedMemory = null;
+        $handlers = array();
 
-        $handler = set_error_handler('var_dump');
-        $handler = is_array($handler) ? $handler[0] : null;
-        restore_error_handler();
+        while (!is_array($handler) || !$handler[0] instanceof self) {
+            $handler = set_exception_handler('var_dump');
+            restore_exception_handler();
 
-        if (!$handler instanceof self) {
+            if (!$handler) {
+                break;
+            }
+            restore_exception_handler();
+            array_unshift($handlers, $handler);
+        }
+        foreach ($handlers as $h) {
+            set_exception_handler($h);
+        }
+        if (!$handler) {
             return;
         }
+        if ($handler !== $h) {
+            $handler[0]->setExceptionHandler($h);
+        }
+        $handler = $handler[0];
+        $handlers = array();
 
         if ($exit = null === $error) {
             $error = error_get_last();
@@ -715,7 +737,7 @@ class ErrorHandler
         }
         if (!($throw || $this->scopedErrors & $type)) {
             for ($i = 0; isset($lightTrace[$i]); ++$i) {
-                unset($lightTrace[$i]['args']);
+                unset($lightTrace[$i]['args'], $lightTrace[$i]['object']);
             }
         }
 

Tests/DebugClassLoaderTest.php

@@ -332,7 +332,7 @@ class DebugClassLoaderTest extends TestCase
         $this->assertSame($xError, $lastError);
     }
 
-    public function testExtendedDeprecatedMethod()
+    public function testExtendedDeprecatedMethodDoesntTriggerAnyNotice()
     {
         set_error_handler(function () { return false; });
         $e = error_reporting(0);
@@ -346,12 +346,7 @@ class DebugClassLoaderTest extends TestCase
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
-            'type' => E_USER_DEPRECATED,
-            'message' => 'The "Symfony\Component\Debug\Tests\Fixtures\AnnotatedClass::deprecatedMethod()" method is deprecated since version 3.4. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsAnnotatedClass".',
-        );
-
-        $this->assertSame($xError, $lastError);
+        $this->assertSame(array('type' => E_USER_NOTICE, 'message' => ''), $lastError);
     }
 
     public function testInternalsUse()

Tests/Fixtures/Throwing.php

@@ -1,5 +1,3 @@
 <?php
 
-if (!function_exists('__phpunit_run_isolated_test')) {
-    throw new \Exception('boo');
-}
+throw new \Exception('boo');

Tests/phpt/exception_rethrown.phpt

@@ -0,0 +1,36 @@
+--TEST--
+Test rethrowing in custom exception handler
+--FILE--
+<?php
+
+namespace Symfony\Component\Debug;
+
+$vendor = __DIR__;
+while (!file_exists($vendor.'/vendor')) {
+    $vendor = dirname($vendor);
+}
+require $vendor.'/vendor/autoload.php';
+
+if (true) {
+    class TestLogger extends \Psr\Log\AbstractLogger
+    {
+        public function log($level, $message, array $context = array())
+        {
+            echo $message, "\n";
+        }
+    }
+}
+
+set_exception_handler(function ($e) { echo 123; throw $e; });
+ErrorHandler::register()->setDefaultLogger(new TestLogger());
+ini_set('display_errors', 1);
+
+throw new \Exception('foo');
+
+?>
+--EXPECTF--
+Uncaught Exception: foo
+123
+Fatal error: Uncaught %s:25
+Stack trace:
+%a

Tests/phpt/fatal_with_nested_handlers.phpt

@@ -0,0 +1,40 @@
+--TEST--
+Test catching fatal errors when handlers are nested
+--FILE--
+<?php
+
+namespace Symfony\Component\Debug;
+
+$vendor = __DIR__;
+while (!file_exists($vendor.'/vendor')) {
+    $vendor = dirname($vendor);
+}
+require $vendor.'/vendor/autoload.php';
+
+Debug::enable();
+ini_set('display_errors', 0);
+
+$eHandler = set_error_handler('var_dump');
+$xHandler = set_exception_handler('var_dump');
+
+var_dump(array(
+    $eHandler[0] === $xHandler[0] ? 'Error and exception handlers do match' : 'Error and exception handlers are different',
+));
+
+$eHandler[0]->setExceptionHandler('print_r');
+
+if (true) {
+    class Broken implements \Serializable {};
+}
+
+?>
+--EXPECTF--
+array(1) {
+  [0]=>
+  string(37) "Error and exception handlers do match"
+}
+object(Symfony\Component\Debug\Exception\FatalErrorException)#%d (%d) {
+  ["message":protected]=>
+  string(199) "Error: Class Symfony\Component\Debug\Broken contains 2 abstract methods and must therefore be declared abstract or implement the remaining methods (Serializable::serialize, Serializable::unserialize)"
+%a
+}