From 7ba37cb7aad715b2927a6fdad89185df92ca8f23 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Fri, 28 Apr 2023 20:26:09 +0900
Subject: [ruby/resolv] Prefer `Array#concat` over `#+=` on `Array`

Fix https://bugs.ruby-lang.org/issues/19621

https://github.com/ruby/resolv/commit/7faaa78847
---
 lib/resolv.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'lib')

diff --git a/lib/resolv.rb b/lib/resolv.rb
index 08a36243ee..47c4ef6b3b 100644
--- a/lib/resolv.rb
+++ b/lib/resolv.rb
@@ -198,7 +198,7 @@ class Resolv
               next unless addr
               @addr2name[addr] = [] unless @addr2name.include? addr
               @addr2name[addr] << hostname
-              @addr2name[addr] += aliases
+              @addr2name[addr].concat(aliases)
               @name2addr[hostname] = [] unless @name2addr.include? hostname
               @name2addr[hostname] << addr
               aliases.each {|n|
@@ -967,7 +967,7 @@ class Resolv
             next unless keyword
             case keyword
             when 'nameserver'
-              nameserver += args
+              nameserver.concat(args)
             when 'domain'
               next if args.empty?
               search = [args[0]]
-- 
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