From fba8aff7af450e476e97b62385427dfa51850955 Mon Sep 17 00:00:00 2001
From: Dmitry Davydov <haudvd@gmail.com>
Date: Sat, 22 Jun 2024 02:16:04 +0700
Subject: [PATCH] [Bug #20592] Fix segfault when sending NULL to freeaddrinfo

On alpine freeaddrinfo does not accept NULL pointer
---
 ext/socket/raddrinfo.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ext/socket/raddrinfo.c b/ext/socket/raddrinfo.c
index 3d27fc30b9..0611bdcd52 100644
--- a/ext/socket/raddrinfo.c
+++ b/ext/socket/raddrinfo.c
@@ -278,7 +278,7 @@ void
 rb_freeaddrinfo(struct rb_addrinfo *ai)
 {
     if (!ai->allocated_by_malloc)
-        freeaddrinfo(ai->ai);
+        if (ai->ai) freeaddrinfo(ai->ai);
     else {
         struct addrinfo *ai1, *ai2;
         ai1 = ai->ai;
@@ -423,7 +423,7 @@ do_getaddrinfo(void *ptr)
         arg->err = err;
         arg->gai_errno = gai_errno;
         if (arg->cancelled) {
-            freeaddrinfo(arg->ai);
+            if (arg->ai) freeaddrinfo(arg->ai);
         }
         else {
             arg->done = 1;