merged branch tucksaun/fix-issue-1126 (PR #1146)

This PR was merged into the master branch.

Discussion
----------

Fix issue #1126

@fabpot Is this way of adding the test case is ok for you?

Commits
-------

2430431 Fixed #1126
4ce9cbf Added test case for issue #1126

ext/twig/twig.c

@@ -217,8 +217,8 @@ zval *TWIG_CALL_USER_FUNC_ARRAY(zval *object, char *function, zval *arguments TS
 	fci.no_separation = 0;
 
 	if (zend_call_function(&fci, NULL TSRMLS_CC) == FAILURE) {
-		FREE_DTOR(zfunction)
-		zend_throw_exception_ex(zend_exception_get_default(TSRMLS_C), 0 TSRMLS_CC, "Could not execute %s::%s()", zend_get_class_entry(object TSRMLS_CC)->name, function TSRMLS_CC);
+		ALLOC_INIT_ZVAL(retval_ptr);
+		ZVAL_BOOL(retval_ptr, 0);
 	}
 
 	if (args) {

test/Twig/Tests/Fixtures/regression/issue_1126.test

@@ -0,0 +1,15 @@
+--TEST--
+C extension causes php5-fpm to crash
+--TEMPLATE--
+{{ data.test1 }}
+--DATA--
+class test
+{
+    public function __isset($key) {
+        throw new Exception("Hey! Don't try to isset me!");
+    }
+}
+
+return array('data' => new test())
+--EXCEPTION--
+Twig_Error_Runtime: An exception has been thrown during the rendering of a template ("Hey! Don't try to isset me!") in "index.twig" at line 2.