From 28219142c5efe31fcac5c6223a2859571612c1aa Mon Sep 17 00:00:00 2001
From: Vojtech Bubnik <bubnikv@gmail.com>
Date: Tue, 13 Jul 2021 11:19:20 +0200
Subject: [PATCH] Tracing MMU top / bottom segmentation open lines at "trace"
 level.

---
 src/libslic3r/TriangleMeshSlicer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libslic3r/TriangleMeshSlicer.cpp b/src/libslic3r/TriangleMeshSlicer.cpp
index 4304b66b0..565cfcb8b 100644
--- a/src/libslic3r/TriangleMeshSlicer.cpp
+++ b/src/libslic3r/TriangleMeshSlicer.cpp
@@ -1431,6 +1431,8 @@ static std::vector<Polygons> make_slab_loops(
 #endif /* SLIC3R_DEBUG_SLICE_PROCESSING */
                         assert(! loops.empty());
                         assert(open_polylines.empty());
+                        if (! open_polylines.empty())
+                            BOOST_LOG_TRIVIAL(trace) << "make_slab_loops - chaining failed. #" << open_polylines.size() << " open polylines";
                     }
                 }
             }