From dda67753250c57c85b3f005aa27c28117555aadd Mon Sep 17 00:00:00 2001
From: hjk <hjk@qt.io>
Date: Tue, 1 Dec 2020 08:11:07 +0100
Subject: [PATCH] Debugger: Fix crash in GdbMi::parseValue with Qt 6

QString::begin/end may be null in Qt 6.

Fixes: QTCREATORBUG-25018
Change-Id: If50cb79c58096d5fa68e494e33bea131063968fb
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
---
 src/plugins/debugger/debuggerprotocol.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/debugger/debuggerprotocol.cpp b/src/plugins/debugger/debuggerprotocol.cpp
index 30250f27d76..8a751aa4879 100644
--- a/src/plugins/debugger/debuggerprotocol.cpp
+++ b/src/plugins/debugger/debuggerprotocol.cpp
@@ -198,6 +198,9 @@ QString GdbMi::parseCString(const QChar *&from, const QChar *to)
 
 void GdbMi::parseValue(const QChar *&from, const QChar *to)
 {
+    if (from == to)
+        return;
+
     //qDebug() << "parseValue: " << QString(from, to - from);
     switch (from->unicode()) {
         case '{':