From 2dde3708d122c608b2d96c6e4b96c6e9d4e3980a Mon Sep 17 00:00:00 2001
From: "lane.wei" <lane.wei@bambulab.com>
Date: Tue, 1 Aug 2023 20:36:01 +0800
Subject: [PATCH] FIX: add protection to fix crash when mesh boolean

when the split has no effect
we should return directly

Change-Id: I81510c3edea96e101abfedf77023264e06d7d35c
---
 src/libslic3r/MeshBoolean.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/libslic3r/MeshBoolean.cpp b/src/libslic3r/MeshBoolean.cpp
index 5e8a83fe5..61e5cef3e 100644
--- a/src/libslic3r/MeshBoolean.cpp
+++ b/src/libslic3r/MeshBoolean.cpp
@@ -670,6 +670,12 @@ void do_boolean(McutMesh &srcMesh, const McutMesh &cutMesh, const std::string &b
             indexed_triangle_set all_its;
             TriangleMesh tri_src = mcut_to_triangle_mesh(srcMesh);
             std::vector<indexed_triangle_set> src_parts = its_split(tri_src.its);
+            if (src_parts.size() == 1)
+            {
+                //can not split, return error directly
+                BOOST_LOG_TRIVIAL(error) << boost::format("bool operation %1% failed, also can not split")%boolean_opts;
+                return;
+            }
             for (size_t i = 0; i < src_parts.size(); i++)
             {
                 auto part = triangle_mesh_to_mcut(src_parts[i]);