From db4b3641f5235be9a67967e0cf33512da2b50f6b Mon Sep 17 00:00:00 2001
From: Dominik Holland <dominik.holland@qt.io>
Date: Fri, 9 Oct 2020 12:29:57 +0200
Subject: [PATCH] qmlprofiler: Fix a crash in the rangeFilter

Always check the stack before popping an element.

Fixes: QTCREATORBUG-24730
Change-Id: I7dc6363137ef002219fbc49b7343cff8112a58c2
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
---
 src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp b/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
index f1349d97d9c..868b481a19d 100644
--- a/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
+++ b/src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp
@@ -395,7 +395,7 @@ QmlProfilerModelManager::rangeFilter(qint64 rangeStart, qint64 rangeEnd) const
                 if (type.rangeType() != MaximumRangeType) {
                     if (event.rangeStage() == RangeStart)
                         stack.push(event);
-                    else if (event.rangeStage() == RangeEnd)
+                    else if (event.rangeStage() == RangeEnd && !stack.isEmpty())
                         stack.pop();
                     return true;
                 } else if (isStateful(type)) {