From 86702fa29c4ace2f94be651db1fd7b158598be80 Mon Sep 17 00:00:00 2001
From: Allan Sandfeld Jensen <allan.jensen@qt.io>
Date: Fri, 6 Nov 2020 13:18:31 +0100
Subject: [PATCH] Protect QImage colorspace transform on shutdown

Adding a check here similar to fixups in other threaded qimage routines.

Pick-to: 5.15
Change-Id: If7bf7aa0ef78cda15171c9038f41b281fb267dae
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
---
 src/gui/image/qimage.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index 6edf48d3ba..d05a72acc6 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -4861,7 +4861,7 @@ void QImage::applyColorTransform(const QColorTransform &transform)
     int segments = sizeInBytes() / (1<<16);
     segments = std::min(segments, height());
     QThreadPool *threadPool = QThreadPool::globalInstance();
-    if (segments > 1 && !threadPool->contains(QThread::currentThread())) {
+    if (segments > 1 && threadPool && !threadPool->contains(QThread::currentThread())) {
         QSemaphore semaphore;
         int y = 0;
         for (int i = 0; i < segments; ++i) {