Fix SIGBUS from wayland clients

include/client/client.h

@@ -15,7 +15,6 @@ struct output_state {
 
 struct buffer {
         struct wl_buffer *buffer;
-        int fd;
         cairo_surface_t *surface;
         cairo_t *cairo;
         PangoContext *pango;

swaybg/main.c

@@ -21,7 +21,7 @@ int main(int argc, char **argv) {
 	state->width = output->width;
 	state->height = output->height;
 
-	uint8_t r = 100, g = 100, b = 100;
+	uint8_t r = 0, g = 0, b = 0;
 
 	do {
 		if (client_prerender(state) && state->cairo) {
@@ -31,7 +31,7 @@ int main(int argc, char **argv) {
 
 			client_render(state);
 
-			r++; if (r == 0) { g++; if (g == 0) { b++; } }
+			r++; g += 2; b += 4;
 		}
 	} while (wl_display_dispatch(state->display) != -1);
 

wayland/buffers.c

@@ -66,6 +66,8 @@ static struct buffer *create_buffer(struct client_state *state, struct buffer *b
 	free(name);
 	fd = -1;
 
+	buf->width = width;
+	buf->height = height;
 	buf->surface = cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32, width, height, stride);
 	buf->cairo = cairo_create(buf->surface);
 	buf->pango = pango_cairo_create_context(buf->cairo);