From 3398b38cf0d0096fe9b0c3c948bf64efee392215 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien.potencier@gmail.com>
Date: Tue, 3 Apr 2012 19:12:14 +0200
Subject: [PATCH] fixed a regression when a template only extends another one without defining any blocks (closes #683)

---
 CHANGELOG                                          |    1 +
 lib/Twig/Node/Module.php                           |    2 +-
 .../Tests/Fixtures/tags/inheritance/empty.test     |   10 ++++++++++
 test/Twig/Tests/Node/ModuleTest.php                |   20 ++++++++++++++++++++
 test/Twig/Tests/Node/SandboxedModuleTest.php       |   20 ++++++++++++++++++++
 5 files changed, 52 insertions(+), 1 deletions(-)
 create mode 100644 test/Twig/Tests/Fixtures/tags/inheritance/empty.test

diff --git a/CHANGELOG b/CHANGELOG
index 4d8b7f7..b0e96ec 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 * 1.7.0 (2012-XX-XX)
 
+ * fixed a regression when a template only extends another one without defining any blocks
  * added compilation checks to avoid misuses of the sandbox tag
  * fixed filesystem loader freshness logic for high traffic websites
 
diff --git a/lib/Twig/Node/Module.php b/lib/Twig/Node/Module.php
index c67bc9a..65428f9 100644
--- a/lib/Twig/Node/Module.php
+++ b/lib/Twig/Node/Module.php
@@ -37,7 +37,7 @@ class Twig_Node_Module extends Twig_Node
     {
         $this->compileClassHeader($compiler);
 
-        if (count($this->getNode('blocks')) || count($this->getNode('traits'))) {
+        if (count($this->getNode('blocks')) || count($this->getNode('traits')) || null === $this->getNode('parent') || $this->getNode('parent') instanceof Twig_Node_Expression_Constant) {
             $this->compileConstructor($compiler);
         }
 
diff --git a/test/Twig/Tests/Fixtures/tags/inheritance/empty.test b/test/Twig/Tests/Fixtures/tags/inheritance/empty.test
new file mode 100644
index 0000000..784f357
--- /dev/null
+++ b/test/Twig/Tests/Fixtures/tags/inheritance/empty.test
@@ -0,0 +1,10 @@
+--TEST--
+"extends" tag
+--TEMPLATE--
+{% extends "foo.twig" %}
+--TEMPLATE(foo.twig)--
+{% block content %}FOO{% endblock %}
+--DATA--
+return array()
+--EXPECT--
+FOO
diff --git a/test/Twig/Tests/Node/ModuleTest.php b/test/Twig/Tests/Node/ModuleTest.php
index 4b2b2e9..f60f105 100644
--- a/test/Twig/Tests/Node/ModuleTest.php
+++ b/test/Twig/Tests/Node/ModuleTest.php
@@ -69,6 +69,16 @@ class Twig_Tests_Node_ModuleTest extends Twig_Tests_Node_TestCase
 /* foo.twig */
 class __TwigTemplate_be925a7b06dda0dfdbd18a1509f7eb34 extends Twig_Template
 {
+    public function __construct(Twig_Environment \$env)
+    {
+        parent::__construct(\$env);
+
+        \$this->parent = false;
+
+        \$this->blocks = array(
+        );
+    }
+
     protected function doDisplay(array \$context, array \$blocks = array())
     {
         echo "foo";
@@ -99,6 +109,16 @@ EOF
 /* foo.twig */
 class __TwigTemplate_be925a7b06dda0dfdbd18a1509f7eb34 extends Twig_Template
 {
+    public function __construct(Twig_Environment \$env)
+    {
+        parent::__construct(\$env);
+
+        \$this->parent = \$this->env->loadTemplate("layout.twig");
+
+        \$this->blocks = array(
+        );
+    }
+
     protected function doGetParent(array \$context)
     {
         return "layout.twig";
diff --git a/test/Twig/Tests/Node/SandboxedModuleTest.php b/test/Twig/Tests/Node/SandboxedModuleTest.php
index f86442b..db1bd89 100644
--- a/test/Twig/Tests/Node/SandboxedModuleTest.php
+++ b/test/Twig/Tests/Node/SandboxedModuleTest.php
@@ -67,6 +67,16 @@ class Twig_Tests_Node_SandboxedModuleTest extends Twig_Tests_Node_TestCase
 /* foo.twig */
 class __TwigTemplate_be925a7b06dda0dfdbd18a1509f7eb34 extends Twig_Template
 {
+    public function __construct(Twig_Environment \$env)
+    {
+        parent::__construct(\$env);
+
+        \$this->parent = false;
+
+        \$this->blocks = array(
+        );
+    }
+
     protected function doDisplay(array \$context, array \$blocks = array())
     {
         \$this->checkSecurity();
@@ -110,6 +120,16 @@ EOF
 /* foo.twig */
 class __TwigTemplate_be925a7b06dda0dfdbd18a1509f7eb34 extends Twig_Template
 {
+    public function __construct(Twig_Environment \$env)
+    {
+        parent::__construct(\$env);
+
+        \$this->parent = \$this->env->loadTemplate("layout.twig");
+
+        \$this->blocks = array(
+        );
+    }
+
     protected function doGetParent(array \$context)
     {
         return "layout.twig";
-- 
1.7.2.5