Renaming a file does not change QFile's fileName

QFile made no attempt to reset the file name on a rename. We now reset
the fileEngine's fileName if it was able to handle the rename.
Otherwise, we call setFileName, which will result in reallocation of the
fileEngine.

Task-number: 244485
Reviewed-by: mariusSO

1 files changed, 5 insertions, 0 deletions

diff --git a/src/corelib/io/qfile.cpp b/src/corelib/io/qfile.cpp
index 986c6f5..f0a6676 100644
--- a/src/corelib/io/qfile.cpp
+++ b/src/corelib/io/qfile.cpp
@@ -712,6 +712,9 @@ QFile::rename(const QString &newName)
     if(error() == QFile::NoError) {
         if (fileEngine()->rename(newName)) {
             unsetError();
+            // engine was able to handle the new name so we just reset it
+            fileEngine()->setFileName(newName);
+            d->fileName = newName;
             return true;
         }
 
@@ -741,6 +744,8 @@ QFile::rename(const QString &newName)
                 }
                 if (error)
                     out.remove();
+                else
+                    setFileName(newName);
                 return !error;
             }
         }