Add comments about how _xcb_conn_ret_error() works

[free-sw/xcb/libxcb] / src / xcbint.h

diff --git a/src/xcbint.h b/src/xcbint.h
index b25f03b..67cf571 100644 (file)
--- a/src/xcbint.h
+++ b/src/xcbint.h
@@ -192,6 +192,7 @@ void _xcb_ext_destroy(xcb_connection_t *c);
 /* xcb_conn.c */
 
 struct xcb_connection_t {
+    /* This must be the first field; see _xcb_conn_ret_error(). */
     int has_error;
 
     /* constant data */