From 70e3147d58502f0c9122d6d18ed02c9b0e4cd863 Mon Sep 17 00:00:00 2001
From: Daniel Poelzleithner <git@poelzi.org>
Date: Mon, 24 May 2021 16:48:41 +0200
Subject: [PATCH] Fix crash when right double clicking GLSL waveform

---
 src/waveform/widgets/glslwaveformwidget.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/waveform/widgets/glslwaveformwidget.cpp b/src/waveform/widgets/glslwaveformwidget.cpp
index d133459baa9..b7b2994e899 100644
--- a/src/waveform/widgets/glslwaveformwidget.cpp
+++ b/src/waveform/widgets/glslwaveformwidget.cpp
@@ -97,7 +97,9 @@ void GLSLWaveformWidget::mouseDoubleClickEvent(QMouseEvent *event) {
     if (event->button() == Qt::RightButton) {
         makeCurrent();
 #if !defined(QT_NO_OPENGL) && !defined(QT_OPENGL_ES_2)
-        m_signalRenderer->debugClick();
+        if (m_signalRenderer) {
+            m_signalRenderer->debugClick();
+        }
 #endif // !defined(QT_NO_OPENGL) && !defined(QT_OPENGL_ES_2)
     }
 }