Windows: Fix potential crash when retrieving default printer

GetDefaultPrinter() has been observed to return size == 0. Pick-to: 6.3 6.2 5.15 Fixes: QTBUG-53290 Change-Id: Id4c7a06d14d368c792e15e55cacf2366b6aedc7b Reviewed-by: Andy Shaw <[email protected]>
andreasbuhr · Mar 29, 2022 · 0cdb44f · 0cdb44f
1 parent d85c652
commit 0cdb44f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/printsupport/platform/windows/qwindowsprintdevice.cpp b/src/printsupport/platform/windows/qwindowsprintdevice.cpp
@@ -499,7 +499,7 @@ QStringList QWindowsPrintDevice::availablePrintDeviceIds()
 QString QWindowsPrintDevice::defaultPrintDeviceId()
 {
     DWORD size = 0;
-    if (GetDefaultPrinter(nullptr, &size) == ERROR_FILE_NOT_FOUND)
+    if (GetDefaultPrinter(nullptr, &size) == ERROR_FILE_NOT_FOUND || size < 2)
        return QString();
 
     QScopedArrayPointer<wchar_t> name(new wchar_t[size]);