[Qemu-devel] [PULL 02/13] console: add same displaychangelistener registration pre-condition

[Gerd Hoffmann]

From: Marc-André Lureau <address@hidden>

Catch an invalid state. Mainly useful for documentation purposes.

Signed-off-by: Marc-André Lureau <address@hidden>
Message-id: address@hidden
Signed-off-by: Gerd Hoffmann <address@hidden>
---
 ui/console.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ui/console.c b/ui/console.c
index 0cbe5033dd..189eecfd29 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1410,6 +1410,8 @@ void register_displaychangelistener(DisplayChangeListener 
*dcl)
     static DisplaySurface *dummy;
     QemuConsole *con;
 
+    assert(!dcl->ds);
+
     if (dcl->ops->dpy_gl_ctx_create) {
         /* display has opengl support */
         assert(dcl->con);
-- 
2.9.3