From 35d4f91b42f7b468bfe01ee160900f419b409a90 Mon Sep 17 00:00:00 2001
From: Matthieu Gallien <matthieu.gallien@nextcloud.com>
Date: Mon, 7 Oct 2024 14:16:50 +0200
Subject: [PATCH] ensure log context category is valid before reading it

category of logs accessed via log context can be null
in such a case, strcmp will crash

Signed-off-by: Matthieu Gallien <matthieu.gallien@nextcloud.com>
---
 src/libsync/logger.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libsync/logger.cpp b/src/libsync/logger.cpp
index 5e84be48a..86f482fff 100644
--- a/src/libsync/logger.cpp
+++ b/src/libsync/logger.cpp
@@ -148,7 +148,7 @@ void Logger::doLog(QtMsgType type, const QMessageLogContext &ctx, const QString
             if (_doFileFlush)
                 _logstream->flush();
         }
-        if (_permanentDeleteLogStream && strcmp(ctx.category, lcPermanentLog().categoryName()) == 0) {
+        if (_permanentDeleteLogStream && ctx.category && strcmp(ctx.category, lcPermanentLog().categoryName()) == 0) {
             (*_permanentDeleteLogStream) << msg << "\n";
             _permanentDeleteLogStream->flush();
             if (_permanentDeleteLogFile.size() > 10LL * 1024LL) {