diff -Naur nip2-7.30.1-orig/src/parser.h nip2-7.30.1/src/parser.h

--- nip2-7.30.1-orig/src/parser.h	2012-04-18 13:38:51.000000000 +0300

+++ nip2-7.30.1/src/parser.h	2012-10-23 02:28:26.290569236 +0300

@@ -55,7 +55,7 @@

 void nip2yyerror( const char *sub, ... )

 	__attribute__((format(printf, 1, 2)));

 void yyerror( const char *msg ); 

-extern int yyleng;			/* lex stuff */

+extern size_t yyleng;			/* lex stuff */

 /* Lex gathers tokens here for workspace.c

  */