From e6166a8b4074c76ac05c3f40d4ae6a4e3b267060 Mon Sep 17 00:00:00 2001
From: Pol Dellaiera <pol.dellaiera@protonmail.com>
Date: Mon, 10 Feb 2020 11:19:17 +0100
Subject: [PATCH] PHP 7.4 fix - Ensure the existence of the 'args' key.

---
 src/DocBlock/Tags/InvalidTag.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/DocBlock/Tags/InvalidTag.php b/src/DocBlock/Tags/InvalidTag.php
index a531c03..95f8221 100644
--- a/src/DocBlock/Tags/InvalidTag.php
+++ b/src/DocBlock/Tags/InvalidTag.php
@@ -104,6 +104,7 @@ final class InvalidTag implements Tag
         do {
             $trace = array_map(
                 static function (array $call) use ($flatten) : array {
+                    $call += ['args' => []];
                     array_walk_recursive($call['args'], $flatten);
 
                     return $call;