Fix undefined behavior of toMSecsSinceEpoch() if QDateTime is not valid

https://doc.qt.io/qt-5/qdatetime.html#toMSecsSinceEpoch

1 files changed, 3 insertions, 1 deletions

diff --git a/src/sources/metadatasourcetaglib.cpp b/src/sources/metadatasourcetaglib.cpp
index 6684e820ef..9893623e29 100644
--- a/src/sources/metadatasourcetaglib.cpp
+++ b/src/sources/metadatasourcetaglib.cpp
@@ -80,7 +80,9 @@ inline QDateTime getSourceSynchronizedAt(const QFileInfo& fileInfo) {
     // Ignore bogus values like 1970-01-01T00:00:00.000 UTC
     // that are obviously incorrect and don't provide any
     // information.
-    if (lastModifiedUtc.toMSecsSinceEpoch() == 0) {
+    if (lastModifiedUtc.isValid() &&
+            // Only defined if valid
+            lastModifiedUtc.toMSecsSinceEpoch() == 0) {
         return QDateTime{};
     }
     return lastModifiedUtc;