Log X11 errors in i3bar.

This commit introduces X11 error logging similar to the way we already do in i3.

fixes #1998

diff --git a/i3bar/src/xcb.c b/i3bar/src/xcb.c
index efef73650b6fb87b159f4a6a0144053b65c2ab92..63b9863af83aa2114197834d61d9aee84f4eac1e 100644 (file)
--- a/i3bar/src/xcb.c
+++ b/i3bar/src/xcb.c
@@ -987,6 +987,13 @@ void xcb_chk_cb(struct ev_loop *loop, ev_check *watcher, int revents) {
     }
 
     while ((event = xcb_poll_for_event(xcb_connection)) != NULL) {
+        if (event->response_type == 0) {
+            xcb_generic_error_t *error = (xcb_generic_error_t *)event;
+            DLOG("Received X11 error, sequence 0x%x, error_code = %d\n", error->sequence, error->error_code);
+            free(event);
+            continue;
+        }
+
         int type = (event->response_type & ~0x80);
 
         if (type == xkb_base && xkb_base > -1) {