From 31b65dfbe9ae98ac6e2ff61c745041e73b60e491 Mon Sep 17 00:00:00 2001
From: "zhimin.zeng" <zhimin.zeng@bambulab.com>
Date: Mon, 9 Dec 2024 20:20:42 +0800
Subject: [PATCH] FIX: array out of bounds

when slice one filament with multi_extruder printer
jira: none

Change-Id: Ic8deeb7df9c428e97bf904532362180fc1fd6738
(cherry picked from commit feb9b02067b2e4bbdba7ba429531d4fd6081913c)
---
 src/libslic3r/Config.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libslic3r/Config.hpp b/src/libslic3r/Config.hpp
index 33f5dba65e..91955ae565 100644
--- a/src/libslic3r/Config.hpp
+++ b/src/libslic3r/Config.hpp
@@ -602,6 +602,8 @@ public:
         if (cnt < 1)
             return false;
 
+        std::vector<T> default_value = this->values;
+
         if (this->values.empty())
             this->values.resize(rhs_vec->size());
         else
@@ -610,7 +612,7 @@ public:
         assert(default_index.size() == rhs_vec->size());
 
         bool modified = false;
-        std::vector<T> default_value = this->values;
+
         for (size_t i = 0; i < rhs_vec->size(); ++i) {
             if (!rhs_vec->is_nil(i)) {
                 this->values[i] = rhs_vec->values[i];