fixed issue #91

src/Monolog/Handler/BufferHandler.php

@@ -38,6 +38,9 @@ class BufferHandler extends AbstractHandler
         parent::__construct($level, $bubble);
         $this->handler = $handler;
         $this->bufferSize = $bufferSize;
+
+        // __destructor() doesn't get called on Fatal errors
+        register_shutdown_function(array($this, 'close'));
     }
 
     /**
@@ -64,4 +67,4 @@ class BufferHandler extends AbstractHandler
     {
         $this->handler->handleBatch($this->buffer);
     }
-}
+}