File 5745-pg-fix-pg-monitor_scope-0-1-return-value.p... of Package erlang

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File 5745-pg-fix-pg-monitor_scope-0-1-return-value.patch of Package erlang

From ef69cea0d7f71d8081f3c54ea1630776be01b5a0 Mon Sep 17 00:00:00 2001
From: Maxim Fedorov <maximfca@gmail.com>
Date: Fri, 2 Sep 2022 13:47:07 -0700
Subject: [PATCH] [pg] fix pg:monitor_scope/0,1 return value

These functions were expected to return the entire scope content,
but due to a bug only local pids were returned.
---
 lib/kernel/src/pg.erl        |  2 +-
 lib/kernel/test/pg_SUITE.erl | 24 +++++++++++++++++++++++-
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/lib/kernel/src/pg.erl b/lib/kernel/src/pg.erl
index a44794e352..017b1942b4 100644
--- a/lib/kernel/src/pg.erl
+++ b/lib/kernel/src/pg.erl
@@ -305,7 +305,7 @@ handle_call({leave_local, Group, PidOrPids}, _From, #state{scope = Scope, local
 
 handle_call(monitor, {Pid, _Tag}, #state{scope = Scope, scope_monitors = ScopeMon} = State) ->
     %% next line could also be done with iterating over process state, but it appears to be slower
-    Local = maps:from_list([{G,P} || [G,P] <- ets:match(Scope, {'$1', '_', '$2'})]),
+    Local = maps:from_list([{G,P} || [G,P] <- ets:match(Scope, {'$1', '$2', '_'})]),
     MRef = erlang:monitor(process, Pid), %% monitor the monitor, to discard it upon termination, and generate MRef
     {reply, {MRef, Local}, State#state{scope_monitors = ScopeMon#{MRef => Pid}}};
 
-- 
2.35.3

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File 5745-pg-fix-pg-monitor_scope-0-1-return-value.patch of Package erlang

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