Message ID | 20170406120513.638-2-marcandre.lureau@redhat.com |
---|---|
State | New |
Headers | show |
diff --git a/ui/console.c b/ui/console.c index 419b098c11..0cbe5033dd 100644 --- a/ui/console.c +++ b/ui/console.c @@ -1538,6 +1538,8 @@ void dpy_gfx_replace_surface(QemuConsole *con, DisplaySurface *old_surface = con->surface; DisplayChangeListener *dcl; + assert(old_surface != surface); + con->surface = surface; QLIST_FOREACH(dcl, &s->listeners, next) { if (con != (dcl->con ? dcl->con : active_console)) {
Catch an invalid state early, before a potential use-after-free. This is mainly useful for documentation purposes. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> --- ui/console.c | 2 ++ 1 file changed, 2 insertions(+)