diff options
Diffstat (limited to 'libXext')
| -rw-r--r-- | libXext/src/Xge.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/libXext/src/Xge.c b/libXext/src/Xge.c index 1f37e596d..5c4d72dd7 100644 --- a/libXext/src/Xge.c +++ b/libXext/src/Xge.c @@ -108,15 +108,21 @@ static XExtDisplayInfo *_xgeFindDisplay(Display *dpy) &xge_extension_hooks, 0 /* no events, see below */, NULL); - /* We don't use an extension opcode, so we have to set the handlers - * directly. If GenericEvent would be > 64, the job would be done by - * XExtAddDisplay */ - XESetWireToEvent (dpy, - GenericEvent, - xge_extension_hooks.wire_to_event); - XESetEventToWire (dpy, - GenericEvent, - xge_extension_hooks.event_to_wire); + /* dpyinfo->codes is only null if the server claims not to suppport + XGE. Don't set up the hooks then, so that an XGE event from the + server doesn't crash our client */ + if (dpyinfo && dpyinfo->codes) + { + /* We don't use an extension opcode, so we have to set the handlers + * directly. If GenericEvent would be > 64, the job would be done by + * XExtAddDisplay */ + XESetWireToEvent (dpy, + GenericEvent, + xge_extension_hooks.wire_to_event); + XESetEventToWire (dpy, + GenericEvent, + xge_extension_hooks.event_to_wire); + } } return dpyinfo; } @@ -238,7 +244,7 @@ _xgeWireToEvent(Display* dpy, XEvent* re, xEvent *event) int extension; XGEExtList it; XExtDisplayInfo* info = _xgeFindDisplay(dpy); - if (!info) + if (!info || !info->data) return False; /* _xgeCheckExtInit() calls LockDisplay, leading to a SIGABRT. @@ -274,7 +280,7 @@ _xgeEventToWire(Display* dpy, XEvent* re, xEvent* event) int extension; XGEExtList it; XExtDisplayInfo* info = _xgeFindDisplay(dpy); - if (!info) + if (!info || !info->data) return 1; /* error! */ extension = ((XGenericEvent*)re)->extension; |