File 5721-Make-domain-name-comparison-ignore-trailin... of Package erlang

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File 5721-Make-domain-name-comparison-ignore-trailing-dot.patch of Package erlang

From b42660f73f080027e333e49393a8405b838e1126 Mon Sep 17 00:00:00 2001
From: Raimo Niskanen <raimo@erlang.org>
Date: Wed, 18 May 2022 18:03:08 +0200
Subject: [PATCH] Make domain name comparison ignore trailing dot

---
 lib/kernel/src/inet_db.erl         | 4 ++++
 lib/kernel/test/inet_res_SUITE.erl | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/lib/kernel/src/inet_db.erl b/lib/kernel/src/inet_db.erl
index 87b272a44b..408f563909 100644
--- a/lib/kernel/src/inet_db.erl
+++ b/lib/kernel/src/inet_db.erl
@@ -1848,6 +1848,10 @@ eq_domains([A | As], [B | Bs]) ->
                     false
             end
     end;
+eq_domains([$.], []) ->
+    true;
+eq_domains([], [$.]) ->
+    true;
 eq_domains([], []) ->
     true;
 eq_domains(As, Bs) when is_list(As), is_list(Bs) ->
diff --git a/lib/kernel/test/inet_res_SUITE.erl b/lib/kernel/test/inet_res_SUITE.erl
index 60589c33dc..da079fea1b 100644
--- a/lib/kernel/test/inet_res_SUITE.erl
+++ b/lib/kernel/test/inet_res_SUITE.erl
@@ -514,6 +514,7 @@ basic(Config) when is_list(Config) ->
     NS = ns(Config),
     Name = "ns.otptest",
     NameC = caseflip(Name),
+    NameD = NameC ++ ".",
     IP1 = {127,0,0,253},
     IP2 = {127,0,0,254},
     %%
@@ -575,6 +576,9 @@ basic(Config) when is_list(Config) ->
     [IP1, IP2] =
         lists:sort(
           inet_res:lookup(NameC, in, a, [{nameservers,[NS]},verbose])),
+    [IP1, IP2] =
+        lists:sort(
+          inet_res:lookup(NameD, in, a, [{nameservers,[NS]},verbose])),
     %%
     %% gethostbyname
     ?P("gethostbyname"),
-- 
2.35.3

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File 5721-Make-domain-name-comparison-ignore-trailing-dot.patch of Package erlang

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