From c0b0c3cff1a7419c1794db1c85007786cab5616d Mon Sep 17 00:00:00 2001
From: ydah <13041216+ydah@users.noreply.github.com>
Date: Wed, 15 Nov 2023 01:13:22 +0900
Subject: [PATCH 1/3] Silence compiler warning

---
 template/bison/yacc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/template/bison/yacc.c b/template/bison/yacc.c
index 184eacb3..2d88dee4 100644
--- a/template/bison/yacc.c
+++ b/template/bison/yacc.c
@@ -1485,6 +1485,7 @@ YYLTYPE yylloc = yyloc_default;
 <%# b4_declare_parser_state_variables -%>
     /* Number of syntax errors so far.  */
     int yynerrs = 0;
+    (void) yynerrs; /* Silence compiler warning.  */
 
     yy_state_fast_t yystate = 0;
     /* Number of tokens to shift before error messages enabled.  */

From 8e462563cd03d7f9286c645909e6db83268a9516 Mon Sep 17 00:00:00 2001
From: ydah <13041216+ydah@users.noreply.github.com>
Date: Wed, 15 Nov 2023 01:15:37 +0900
Subject: [PATCH 2/3] Remove redundant silence compiler warning

---
 spec/lrama/integration_spec.rb | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/spec/lrama/integration_spec.rb b/spec/lrama/integration_spec.rb
index 59c0f8de..aaf20320 100644
--- a/spec/lrama/integration_spec.rb
+++ b/spec/lrama/integration_spec.rb
@@ -116,7 +116,7 @@ def test_rules(rules, input, expected, command_args: [], debug: false)
 
   %%
 
-  program : { (void)yynerrs; }
+  program : /* empty */
        | expr { printf("=> %d", $1); }
        ;
   expr : NUM
@@ -149,7 +149,7 @@ def test_rules(rules, input, expected, command_args: [], debug: false)
 
   %%
 
-  program : { }
+  program : /* empty */
           ;
 
     Grammar
@@ -195,7 +195,7 @@ def test_rules(rules, input, expected, command_args: [], debug: false)
 
   %%
 
-  program : { (void)yynerrs; }
+  program : /* empty */
        | expr { printf("=> %d", $1); }
        ;
   expr : NUM
@@ -290,8 +290,6 @@ def test_rules(rules, input, expected, command_args: [], debug: false)
 
   line: expr
           {
-            (void)yynerrs;
-
             printf("line (%d): ", @expr.first_line);
             print_location(&@expr);
 
@@ -411,7 +409,7 @@ def test_rules(rules, input, expected, command_args: [], debug: false)
 
   %%
 
-  program : { (void)yynerrs; }
+  program : /* empty */
        | expr { printf("=> %d", $1); }
        ;
 
@@ -457,7 +455,7 @@ def test_rules(rules, input, expected, command_args: [], debug: false)
 
   %%
 
-  program : { (void)yynerrs; }
+  program : /* empty */
        | expr { printf("=> %d", $1); }
        ;
   expr : NUM

From 35463e243bd30ced6bc9432d5f6684ae8276779d Mon Sep 17 00:00:00 2001
From: ydah <13041216+ydah@users.noreply.github.com>
Date: Wed, 15 Nov 2023 11:41:29 +0900
Subject: [PATCH 3/3] Use YY_USE instead of (void)

---
 template/bison/yacc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/template/bison/yacc.c b/template/bison/yacc.c
index 2d88dee4..0e17b46f 100644
--- a/template/bison/yacc.c
+++ b/template/bison/yacc.c
@@ -1485,7 +1485,7 @@ YYLTYPE yylloc = yyloc_default;
 <%# b4_declare_parser_state_variables -%>
     /* Number of syntax errors so far.  */
     int yynerrs = 0;
-    (void) yynerrs; /* Silence compiler warning.  */
+    YY_USE (yynerrs); /* Silence compiler warning.  */
 
     yy_state_fast_t yystate = 0;
     /* Number of tokens to shift before error messages enabled.  */