Fix baseUrl returning an empty url

Do not append the directory separator if the current path is the root
directory. Otherwise it is treated as a remote path incorrectly and an
empty url is returned as a result.

Change-Id: Icc62114702265e9e1b247624370a78999e564d5f
Task-number: QTBUG-83121
Pick-to: 5.15
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/qml/qml/qqmlengine.cpp b/src/qml/qml/qqmlengine.cpp
index 381d934b8b..c63418cb0b 100644
--- a/src/qml/qml/qqmlengine.cpp
+++ b/src/qml/qml/qqmlengine.cpp
@@ -1285,7 +1285,9 @@ QUrl QQmlEngine::baseUrl() const
 {
     Q_D(const QQmlEngine);
     if (d->baseUrl.isEmpty()) {
-        return QUrl::fromLocalFile(QDir::currentPath() + QDir::separator());
+        const QString currentPath = QDir::currentPath();
+        const QString rootPath = QDir::rootPath();
+        return QUrl::fromLocalFile((currentPath == rootPath) ? rootPath : (currentPath + QDir::separator()));
     } else {
         return d->baseUrl;
     }