From 6bdaf0eaec949e1f50556c83d9e19fe94302a528 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luk=C3=A1=C5=A1=20Hejl?= <hejl.lukas@gmail.com>
Date: Thu, 2 Jun 2022 11:51:43 +0200
Subject: [PATCH] Follow-up of a47446574eb3f831907248dc841eb6f7684bbdb3 -
 Disable tbb::task_scheduler_observer in TBBLocalesSetter destructor.

The base class wasn't disabling observing when tbb::task_scheduler_observer was destructed, which leads to undefined behavior.
---
 src/libslic3r/GCode.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 1f7eaba240..58951ffa5a 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -1501,7 +1501,7 @@ class TBBLocalesSetter : public tbb::task_scheduler_observer
 {
 public:
     TBBLocalesSetter() { this->observe(true); }
-    ~TBBLocalesSetter() override = default;
+    ~TBBLocalesSetter() override { this->observe(false); };
 
     void on_scheduler_entry(bool is_worker) override
     {
@@ -1513,7 +1513,7 @@ public:
     }
 
 private:
-    tbb::enumerable_thread_specific<bool, tbb::cache_aligned_allocator<bool>, tbb::ets_key_usage_type::ets_key_per_instance> m_is_locales_sets;
+    tbb::enumerable_thread_specific<bool, tbb::cache_aligned_allocator<bool>, tbb::ets_key_usage_type::ets_key_per_instance> m_is_locales_sets{false};
 };
 
 // Process all layers of all objects (non-sequential mode) with a parallel pipeline: