From 41bfd5b8c2a93b965f2b2928f1ee4335a50e8e6b Mon Sep 17 00:00:00 2001
From: "lane.wei" <lane.wei@bambulab.com>
Date: Mon, 18 Aug 2025 09:38:09 +0800
Subject: [PATCH] FIX: CLI: fix the size related issue in set_with_restore_2

jira: no-jira
Change-Id: I5b9b5dd3ae2eac63e9f494fd7b7ab5d4d38dbac7
(cherry picked from commit 030ebd1a3515a7d3dbdf3c6cfb77ff0b6b764f2e)
---
 src/libslic3r/Config.hpp | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/libslic3r/Config.hpp b/src/libslic3r/Config.hpp
index ce70f73654..05f6eb8c1c 100644
--- a/src/libslic3r/Config.hpp
+++ b/src/libslic3r/Config.hpp
@@ -514,11 +514,17 @@ public:
             //backup original ones
             std::vector<T> backup_values = this->values;
 
-            if (this->values.size() < (start+len))
+            if (this->values.size() < start) {
                 throw ConfigurationError("ConfigOptionVector::set_with_restore_2(): invalid size found");
+            }
+            else {
+                if (this->values.size() < start + len)
+                    len = this->values.size() - start;
 
-            //erase the original ones
-            this->values.erase(this->values.begin() + start, this->values.begin() + start + len);
+                //erase the original ones
+                if (len > 0)
+                    this->values.erase(this->values.begin() + start, this->values.begin() + start + len);
+            }
 
             // Assign the new value from the rhs vector.
             auto other = static_cast<const ConfigOptionVector<T>*>(rhs);