https://git.ruby-lang.org/ruby.git/commit/?id=db3ab440db

From db3ab440db2444b0b3ad388f68c592ec68cfcca7 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Wed, 21 Jul 2021 12:40:26 +0900
Subject: Use prototype definition instead of old K&R style

---
 hash.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hash.c b/hash.c
index f8c5249837f..32a258e7331 100644
--- a/hash.c
+++ b/hash.c
@@ -5369,7 +5369,7 @@ env_aset(VALUE nm, VALUE val) https://github.com/ruby/ruby/blob/trunk/hash.c#L5369
 }
 
 static int
-env_entry_count()
+env_entry_count(void)
 {
     int i;
     char **env;
-- 
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