From 843f14d069d12a121a79a385510d5b2c8aef01fb Mon Sep 17 00:00:00 2001
From: NikolayZhebet <phpapple@gmail.com>
Date: Thu, 30 Sep 2021 20:09:15 +0300
Subject: [PATCH] fix 'Undefined offset: 1' in
 CodeBase::getTypeContextAtPosition issue (#6559)

---
 src/Psalm/Codebase.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Psalm/Codebase.php b/src/Psalm/Codebase.php
index 256f5c5f1..894ea7eb3 100644
--- a/src/Psalm/Codebase.php
+++ b/src/Psalm/Codebase.php
@@ -1466,7 +1466,7 @@ class Codebase
             }
             // First parameter to a function-like
             $function_storage = $this->getFunctionStorageForSymbol($file_path, $function . '()');
-            if (!$function_storage || !$function_storage->params) {
+            if (!$function_storage || !$function_storage->params || !isset($function_storage->params[$argument_num])) {
                 return null;
             }