diff -ur bc-1.06.orig/bc/scan.l bc-1.06/bc/scan.l

--- bc-1.06.orig/bc/scan.l	Wed Sep 13 22:25:47 2000

+++ bc-1.06/bc/scan.l	Mon May  7 14:49:20 2001

@@ -143,7 +143,7 @@

 /* Definitions for readline access. */

 extern FILE *rl_instream;

-_PROTOTYPE(char *readline, (char *));

+_PROTOTYPE(char *readline, (const char *));

 /* rl_input puts upto MAX characters into BUF with the number put in

    BUF placed in *RESULT.  If the yy input file is the same as