Merge branch '2.8' into 3.1

* 2.8:
  [ClassLoader] Use only forward slashes in generated class map
  ensure the proper context for nested validations
  bug #20653 [WebProfilerBundle] Profiler includes ghost panels

src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/layout.html.twig

@@ -114,7 +114,7 @@
                         {% for name, template in templates %}
                             {% set menu -%}
                                 {% with { collector: profile.getcollector(name), profiler_markup_version: profiler_markup_version } %}
-                                    {{ block('menu', template) }}
+                                    {{- block('menu', template) -}}
                                 {% endwith %}
                             {%- endset %}
                             {% if menu is not empty %}

src/Symfony/Component/ClassLoader/ClassCollectionLoader.php

@@ -60,7 +60,7 @@ class ClassCollectionLoader
             throw new \RuntimeException(sprintf('Class Collection Loader was not able to create directory "%s"', $cacheDir));
         }
         $cacheDir = rtrim(realpath($cacheDir) ?: $cacheDir, '/'.DIRECTORY_SEPARATOR);
-        $cache = $cacheDir.DIRECTORY_SEPARATOR.$name.$extension;
+        $cache = $cacheDir.'/'.$name.$extension;
 
         // auto-reload
         $reload = false;
@@ -108,7 +108,7 @@ class ClassCollectionLoader
 REGEX;
         $dontInlineRegex = str_replace('.', $spacesRegex, $dontInlineRegex);
 
-        $cacheDir = explode(DIRECTORY_SEPARATOR, $cacheDir);
+        $cacheDir = explode('/', str_replace(DIRECTORY_SEPARATOR, '/', $cacheDir));
         $files = array();
         $content = '';
         foreach (self::getOrderedClasses($classes) as $class) {
@@ -120,7 +120,7 @@ REGEX;
             $c = file_get_contents($file);
 
             if (preg_match($dontInlineRegex, $c)) {
-                $file = explode(DIRECTORY_SEPARATOR, $file);
+                $file = explode('/', str_replace(DIRECTORY_SEPARATOR, '/', $file));
 
                 for ($i = 0; isset($file[$i], $cacheDir[$i]); ++$i) {
                     if ($file[$i] !== $cacheDir[$i]) {
@@ -128,11 +128,11 @@ REGEX;
                     }
                 }
                 if (1 >= $i) {
-                    $file = var_export(implode(DIRECTORY_SEPARATOR, $file), true);
+                    $file = var_export(implode('/', $file), true);
                 } else {
                     $file = array_slice($file, $i);
-                    $file = str_repeat('..'.DIRECTORY_SEPARATOR, count($cacheDir) - $i).implode(DIRECTORY_SEPARATOR, $file);
+                    $file = str_repeat('../', count($cacheDir) - $i).implode('/', $file);
-                    $file = '__DIR__.'.var_export(DIRECTORY_SEPARATOR.$file, true);
+                    $file = '__DIR__.'.var_export('/'.$file, true);
                 }
 
                 $c = "\nnamespace {require $file;}";

src/Symfony/Component/Validator/Context/ExecutionContext.php

@@ -269,6 +269,11 @@ class ExecutionContext implements ExecutionContextInterface
         return $this->group;
     }
 
+    public function getConstraint()
+    {
+        return $this->constraint;
+    }
+
     /**
      * {@inheritdoc}
      */

src/Symfony/Component/Validator/Tests/Validator/AbstractTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Validator\Tests\Validator;
 
 use Symfony\Component\Validator\Constraints\Callback;
+use Symfony\Component\Validator\Constraints\Collection;
 use Symfony\Component\Validator\Constraints\GroupSequence;
 use Symfony\Component\Validator\Constraints\NotNull;
 use Symfony\Component\Validator\Constraints\Traverse;
@@ -651,4 +652,22 @@ abstract class AbstractTest extends AbstractValidatorTest
         $this->assertCount(1, $violations);
         $this->assertSame($constraint, $violations[0]->getConstraint());
     }
+
+    public function testCollectionConstraitViolationHasCorrectContext()
+    {
+        $data = array(
+            'foo' => 'fooValue',
+        );
+
+        // Missing field must not be the first in the collection validation
+        $constraint = new Collection(array(
+            'foo' => new NotNull(),
+            'bar' => new NotNull(),
+        ));
+
+        $violations = $this->validate($data, $constraint);
+
+        $this->assertCount(1, $violations);
+        $this->assertSame($constraint, $violations[0]->getConstraint());
+    }
 }

src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php

@@ -14,6 +14,7 @@ namespace Symfony\Component\Validator\Validator;
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\Constraints\GroupSequence;
 use Symfony\Component\Validator\ConstraintValidatorFactoryInterface;
+use Symfony\Component\Validator\Context\ExecutionContext;
 use Symfony\Component\Validator\Context\ExecutionContextInterface;
 use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
 use Symfony\Component\Validator\Exception\NoSuchMetadataException;
@@ -110,6 +111,11 @@ class RecursiveContextualValidator implements ContextualValidatorInterface
         $previousMetadata = $this->context->getMetadata();
         $previousPath = $this->context->getPropertyPath();
         $previousGroup = $this->context->getGroup();
+        $previousConstraint = null;
+
+        if ($this->context instanceof ExecutionContext || method_exists($this->context, 'getConstraint')) {
+            $previousConstraint = $this->context->getConstraint();
+        }
 
         // If explicit constraints are passed, validate the value against
         // those constraints
@@ -138,6 +144,10 @@ class RecursiveContextualValidator implements ContextualValidatorInterface
             $this->context->setNode($previousValue, $previousObject, $previousMetadata, $previousPath);
             $this->context->setGroup($previousGroup);
 
+            if (null !== $previousConstraint) {
+                $this->context->setConstraint($previousConstraint);
+            }
+
             return $this;
         }