diff --git a/gcc/LANGUAGES b/gcc/LANGUAGES
index 216ad2e798f..ed8a8967d0c 100644
--- a/gcc/LANGUAGES
+++ b/gcc/LANGUAGES
@@ -6,6 +6,9 @@ time as we can formally start documenting the interface this file will
 serve as a repository for information on these interface and any incompatable
 changes we've made.
 
+Apr 1, 1998:
+  Front-ends must now define lang_print_xnode.  It is safe for this
+  function to do nothing.  See c-lang.c.
 
 Feb 1, 1998: