Check for error while communicating with Wayland.

1 files changed, 7 insertions, 5 deletions

diff --git a/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx b/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
index ce050dd36..44f0640ae 100644
--- a/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
+++ b/src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
@@ -1065,11 +1065,13 @@ static const struct wl_registry_listener registry_listener = {
 
 
 static void fd_callback(int fd, struct wl_display *display) {
-  struct pollfd fds;
-  fds.fd = fd;
-  fds.events = POLLIN;
-  fds.revents = 0;
-  do wl_display_dispatch(display);
+  struct pollfd fds = (struct pollfd) { fd, POLLIN, 0 };
+  do {
+    if (wl_display_dispatch(display) == -1) {
+      Fl::fatal("Fatal error while communicating with the Wayland server: errno=%d\n",
+                wl_display_get_error(display));
+    }
+  }
   while (poll(&fds, 1, 0) > 0);
 }