From 8e309a0af0851ab54ca7c6d51b6f3d19ee42c8ee Mon Sep 17 00:00:00 2001
From: Evangelos Foutras <evangelos@foutrelis.com>
Date: Wed, 17 Mar 2021 16:36:40 +0200
Subject: [PATCH] Replace YYUSE call with void cast in src/parser.y

The YYUSE macro was renamed to YY_USE in bison 3.7.5; we might as well
avoid using it altogether and cast the unused variable to void instead.

Fixes the following linker error:

/usr/bin/ld: kafel/libkafel.a(libkafel.o): in function `kafel_yyerror':
arm_syscalls.c:(.text+0x6984): undefined reference to `YYUSE'
---
 src/parser.y | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/parser.y b/src/parser.y
index e0f109c..0e01373 100644
--- a/kafel/src/parser.y
+++ b/kafel/src/parser.y
@@ -420,8 +420,8 @@ const_def
 
 void yyerror(YYLTYPE * loc, struct kafel_ctxt* ctxt, yyscan_t scanner,
              const char *msg) {
+  (void)scanner; /* suppress unused-parameter warning */
   if (!ctxt->lexical_error) {
-    YYUSE(scanner);
     if (loc->filename != NULL) {
       append_error(ctxt, "%s:%d:%d: %s", loc->filename, loc->first_line, loc->first_column, msg);
     } else {