From 466be7766d6191fee2135d3e484062f9aad2c16c Mon Sep 17 00:00:00 2001
From: zzyyyl <aysyxx53@hotmail.com>
Date: Mon, 2 Oct 2023 15:10:47 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=20`templ=20size=20is?=
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fix #6639
---
 src/MaaCore/Vision/MultiMatcher.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/MaaCore/Vision/MultiMatcher.cpp b/src/MaaCore/Vision/MultiMatcher.cpp
index a1ac881905..4bd776c9ff 100644
--- a/src/MaaCore/Vision/MultiMatcher.cpp
+++ b/src/MaaCore/Vision/MultiMatcher.cpp
@@ -15,6 +15,10 @@ using namespace asst;
 MultiMatcher::ResultsVecOpt MultiMatcher::analyze() const
 {
     auto match_results = Matcher::preproc_and_match(make_roi(m_image, m_roi), m_params);
+    if (match_results.empty()) {
+        return std::nullopt;
+    }
+
     const auto& [matched, templ, templ_name] = match_results.front();
 
     if (matched.empty()) {