From 873fb30bc5e3ff620fe8041e7c59f924b116fa04 Mon Sep 17 00:00:00 2001
From: "songwei.li" <songwei.li@bambulab.com>
Date: Wed, 30 Jul 2025 15:57:05 +0800
Subject: [PATCH] FIX: 3mf files containing small thumbnails cause crash

Fix the issue that 3mf files containing small thumbnails cause the print page to crash. Due to m_cur_input_thumbnail_data has small size which caused array out of bounds and crash.

jira: STUDIO-13731
Change-Id: Ie3c30287265f635e6afb2b1157c97c5b6863d54e
(cherry picked from commit adffd16e1fbbcba0f1bc33ebd6112e57c88f30e7)
---
 src/slic3r/GUI/SelectMachine.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/SelectMachine.cpp b/src/slic3r/GUI/SelectMachine.cpp
index 2955a97f50..1318a3155d 100644
--- a/src/slic3r/GUI/SelectMachine.cpp
+++ b/src/slic3r/GUI/SelectMachine.cpp
@@ -4031,7 +4031,7 @@ void SelectMachineDialog::record_edge_pixels_data()
     };
     ThumbnailData &data = m_cur_no_light_thumbnail_data;
     ThumbnailData &origin_data = m_cur_input_thumbnail_data;
-    if (data.width > 0 && data.height > 0) {
+    if (data.width > 0 && data.height > 0 && (data.width == origin_data.width && data.height == origin_data.height) ) {
         m_edge_pixels.resize(data.width * data.height);
         for (unsigned int r = 0; r < data.height; ++r) {
             unsigned int rr        = (data.height - 1 - r) * data.width;