From 8c095ec885e7131993ee50ae7f1bc9b1ea570128 Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Sat, 22 Apr 2017 00:41:58 -0700
Subject: [PATCH] Qt: Fix crash when first CLI command is empty (fixes #693)

---
 src/platform/qt/DebuggerConsoleController.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/platform/qt/DebuggerConsoleController.cpp b/src/platform/qt/DebuggerConsoleController.cpp
index 4670d7470..50021eb2c 100644
--- a/src/platform/qt/DebuggerConsoleController.cpp
+++ b/src/platform/qt/DebuggerConsoleController.cpp
@@ -88,6 +88,9 @@ const char* DebuggerConsoleController::historyLast(struct CLIDebuggerBackend* be
 	DebuggerConsoleController* self = consoleBe->self;
 	GameController::Interrupter interrupter(self->m_gameController, true);
 	QMutexLocker lock(&self->m_mutex);
+	if (self->m_history.isEmpty()) {
+		return nullptr;
+	}
 	self->m_last = self->m_history.last().toUtf8();
 	return self->m_last.constData();
 }