QNAM: Add a warning for misuse of the file backend.

Task-number: QTBUG-17731
Reviewed-by: Markus Goetz

1 files changed, 2 insertions, 0 deletions

diff --git a/src/network/access/qnetworkaccessfilebackend.cpp b/src/network/access/qnetworkaccessfilebackend.cpp
index 6da0722..7ebf626 100644
--- a/src/network/access/qnetworkaccessfilebackend.cpp
+++ b/src/network/access/qnetworkaccessfilebackend.cpp
@@ -75,6 +75,8 @@ QNetworkAccessFileBackendFactory::create(QNetworkAccessManager::Operation op,
         //
         // this construct here must match the one below in open()
         QFileInfo fi(url.toString(QUrl::RemoveAuthority | QUrl::RemoveFragment | QUrl::RemoveQuery));
+        if ((url.scheme().length()==1) && fi.exists())
+            qWarning("QNetworkAccessFileBackendFactory: URL has no schema set, use file:// for files");
         if (fi.exists() || (op == QNetworkAccessManager::PutOperation && fi.dir().exists()))
             return new QNetworkAccessFileBackend;
     }