From de7a870509017dbed649ba7040a5620e32ff88a0 Mon Sep 17 00:00:00 2001
From: Brown <github@muglug.com>
Date: Tue, 14 Jan 2020 18:38:02 -0500
Subject: [PATCH] Add better mixed check

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

diff --git a/src/Psalm/Internal/Type/NegatedAssertionReconciler.php b/src/Psalm/Internal/Type/NegatedAssertionReconciler.php
index df36f72cbea..d12b5a0f810 100644
--- a/src/Psalm/Internal/Type/NegatedAssertionReconciler.php
+++ b/src/Psalm/Internal/Type/NegatedAssertionReconciler.php
@@ -99,7 +99,7 @@ public static function reconcile(
                     && strpos($key, '[') === false
                 ) {
                     foreach ($existing_var_type->getAtomicTypes() as $atomic) {
-                        if (!$atomic instanceof TMixed
+                        if (!$existing_var_type->hasMixed()
                             || $atomic instanceof Type\Atomic\TNonEmptyMixed
                         ) {
                             $failed_reconciliation = 2;