From 8487c63fa337df5e965ea6ee1858b26dc284861c Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 17 May 2018 12:36:33 +0000
Subject: [PATCH] rb_parser_printf declaration

* node.h (rb_parser_printf): delcare as PRINTF_ARGS.

* parse.y (parser_token_value_print): cast to adjust to %c.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63454 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 node.h  | 2 +-
 parse.y | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/node.h b/node.h
index c6004b8608..cffb174aa5 100644
--- a/node.h
+++ b/node.h
@@ -540,7 +540,7 @@ void *rb_parser_malloc(struct parser_params *, size_t);
 void *rb_parser_realloc(struct parser_params *, void *, size_t);
 void *rb_parser_calloc(struct parser_params *, size_t, size_t);
 void rb_parser_free(struct parser_params *, void *);
-void rb_parser_printf(struct parser_params *parser, const char *fmt, ...);
+PRINTF_ARGS(void rb_parser_printf(struct parser_params *parser, const char *fmt, ...), 2, 3);
 
 RUBY_SYMBOL_EXPORT_END
 
diff --git a/parse.y b/parse.y
index 3515fde47f..f044ae2aff 100644
--- a/parse.y
+++ b/parse.y
@@ -9110,7 +9110,7 @@ parser_token_value_print(struct parser_params *p, enum yytokentype type, const Y
 	break;
       case tBACK_REF:
 #ifndef RIPPER
-	rb_parser_printf(p, "$%c", valp->node->nd_nth);
+	rb_parser_printf(p, "$%c", (int)valp->node->nd_nth);
 #else
 	rb_parser_printf(p, "%"PRIsVALUE, valp->val);
 #endif