Ensure that QTemporaryFile clears all file mappings.

Factor out code to clear all mappings into
QFSFileEnginePrivate::unmapAll() and call that
from QTemporaryFile.

Task-number: QTBUG-39976
Change-Id: Ic1ceeba0ba4451866f1081fee430e5c458c0819d
Reviewed-by: Jonathan Liu <net147@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/corelib/io/qtemporaryfile.cpp b/src/corelib/io/qtemporaryfile.cpp
index 3cade0ed25..bc6c2f1f06 100644
--- a/src/corelib/io/qtemporaryfile.cpp
+++ b/src/corelib/io/qtemporaryfile.cpp
@@ -235,6 +235,8 @@ static bool createFileFromTemplate(NativeFileHandle &file,
 //************* QTemporaryFileEngine
 QTemporaryFileEngine::~QTemporaryFileEngine()
 {
+    Q_D(QFSFileEngine);
+    d->unmapAll();
     QFSFileEngine::close();
 }
 
@@ -363,6 +365,7 @@ bool QTemporaryFileEngine::remove()
     Q_D(QFSFileEngine);
     // Since the QTemporaryFileEngine::close() does not really close the file,
     // we must explicitly call QFSFileEngine::close() before we remove it.
+    d->unmapAll();
     QFSFileEngine::close();
     if (QFSFileEngine::remove()) {
         d->fileEntry.clear();