--- a/src/toplev.h	Mon Nov 08 23:43:03 1993 +0000
+++ b/src/toplev.h	Wed Nov 10 21:00:31 1993 +0000
@@ -27,6 +27,7 @@
 #include <stdio.h>
 
 class tree;
+class tree_function;
 
 // Tell g++ that clean_up_and_exit doesn't return;
 
@@ -78,6 +79,9 @@
 // Current command to execute.
 extern tree *global_command;
 
+// Pointer to function that is currently being evaluated.
+extern tree_function *curr_function;
+
 #endif
 
 /*