Check non-existent function calls autoloader twice.

Author: Danack

Zend/tests/autoloading/function/global_fallback003.phpt

@@ -0,0 +1,27 @@
+--TEST--
+Fallback to non-existent function triggers autoloading once in namespace, once in global.
+--FILE--
+<?php
+
+namespace {
+    function loader($name) {
+        echo "function loader called with $name\n";
+    }
+
+    autoload_register_function('loader');
+}
+
+namespace bar {
+    try {
+        non_existent_function();
+    }
+    catch (\Error $e) {
+        echo "Error correctly caught: " . $e->getMessage() . "\n";
+    }
+}
+
+?>
+--EXPECT--
+function loader called with bar\non_existent_function
+function loader called with non_existent_function
+Error correctly caught: Call to undefined function bar\non_existent_function()