From f75ab0bd662c73d15057d746347d09bf94a992a6 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Wed, 16 Feb 2022 22:42:34 +0800
Subject: ...

---
 src/ui/host/WindowHost.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/ui/host/WindowHost.cpp')

diff --git a/src/ui/host/WindowHost.cpp b/src/ui/host/WindowHost.cpp
index 6849d000..91b5f438 100644
--- a/src/ui/host/WindowHost.cpp
+++ b/src/ui/host/WindowHost.cpp
@@ -53,6 +53,8 @@ bool IsAncestor(controls::Control* control, controls::Control* ancestor) {
 
 // Ancestor at last.
 std::vector<controls::Control*> GetAncestorList(controls::Control* control) {
+  if (control == nullptr) return {};
+
   std::vector<controls::Control*> l;
   while (control != nullptr) {
     l.push_back(control);
-- 
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