From dd3964c8c3f290c689a342536c7353f865f2a936 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luk=C3=A1=C5=A1=20Hejl?= <hejl.lukas@gmail.com>
Date: Sat, 5 Feb 2022 13:27:54 +0100
Subject: [PATCH] Added deallocation of SupportLayers
 (PrintObject::m_support_layers) into the PrintObject destructor and fixed
 memory leak in modulate_extrusion_by_overlapping_layers().

---
 src/libslic3r/Print.hpp           | 3 ++-
 src/libslic3r/SupportMaterial.cpp | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libslic3r/Print.hpp b/src/libslic3r/Print.hpp
index b6e4802bbb..c5e312a2bf 100644
--- a/src/libslic3r/Print.hpp
+++ b/src/libslic3r/Print.hpp
@@ -346,10 +346,11 @@ private:
     friend class Print;
 
 	PrintObject(Print* print, ModelObject* model_object, const Transform3d& trafo, PrintInstances&& instances);
-    ~PrintObject() {
+    ~PrintObject() override {
         if (m_shared_regions && --m_shared_regions->m_ref_cnt == 0)
             delete m_shared_regions;
         clear_layers();
+        clear_support_layers();
     }
 
     void                    config_apply(const ConfigBase &other, bool ignore_nonexistent = false) { m_config.apply(other, ignore_nonexistent); }
diff --git a/src/libslic3r/SupportMaterial.cpp b/src/libslic3r/SupportMaterial.cpp
index 67bd2639b4..195fc9e172 100644
--- a/src/libslic3r/SupportMaterial.cpp
+++ b/src/libslic3r/SupportMaterial.cpp
@@ -3754,6 +3754,7 @@ void modulate_extrusion_by_overlapping_layers(
             assert(path != nullptr);
             polylines.emplace_back(Polyline(std::move(path->polyline)));
             path_ends.emplace_back(std::pair<Point, Point>(polylines.back().points.front(), polylines.back().points.back()));
+            delete path;
         }
     }
     // Destroy the original extrusion paths, their polylines were moved to path_fragments already.