https://git.ruby-lang.org/ruby.git/commit/?id=8deabcd328

From 8deabcd3280f6042ea1ed14b629d70680e081fec Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 16 Jul 2019 18:42:56 +0900
Subject: Constified afamily functions


diff --git a/ext/socket/raddrinfo.c b/ext/socket/raddrinfo.c
index a6abad6..1054d04 100644
--- a/ext/socket/raddrinfo.c
+++ b/ext/socket/raddrinfo.c
@@ -1114,16 +1114,16 @@ addrinfo_initialize(int argc, VALUE *argv, VALUE self) https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L1114
 }
 
 static int
-get_afamily(struct sockaddr *addr, socklen_t len)
+get_afamily(const struct sockaddr *addr, socklen_t len)
 {
-    if ((socklen_t)((char*)&addr->sa_family + sizeof(addr->sa_family) - (char*)addr) <= len)
+    if ((socklen_t)((const char*)&addr->sa_family + sizeof(addr->sa_family) - (char*)addr) <= len)
         return addr->sa_family;
     else
         return AF_UNSPEC;
 }
 
 static int
-ai_get_afamily(rb_addrinfo_t *rai)
+ai_get_afamily(const rb_addrinfo_t *rai)
 {
     return get_afamily(&rai->addr.addr, rai->sockaddr_len);
 }
-- 
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