From 8b9cbf4922756d912309567f83f81e41f1737ac7 Mon Sep 17 00:00:00 2001
From: Noah Misch
Date: Tue, 10 Dec 2024 13:51:59 -0800
Subject: Fix elog(FATAL) before PostmasterMain() or just after fork().

Since commit 97550c0711972a9856b5db751539bbaf2f88884c, these failed with
"PANIC:  proc_exit() called in child process" due to uninitialized or
stale MyProcPid.  That was reachable if close() failed in
ClosePostmasterPorts() or setlocale(category, "C") failed, both
unlikely.  Back-patch to v13 (all supported versions).

Discussion: https://postgr.es/m/20241208034614.45.nmisch@google.com
---
 src/backend/main/main.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/backend/main')

diff --git a/src/backend/main/main.c b/src/backend/main/main.c
index 3acb46bd464..2d98d97e8d8 100644
--- a/src/backend/main/main.c
+++ b/src/backend/main/main.c
@@ -32,6 +32,7 @@
 
 #include "bootstrap/bootstrap.h"
 #include "common/username.h"
+#include "miscadmin.h"
 #include "postmaster/postmaster.h"
 #include "tcop/tcopprot.h"
 #include "utils/help_config.h"
@@ -109,6 +110,7 @@ main(int argc, char *argv[])
 	 * localization of messages may not work right away, and messages won't go
 	 * anywhere but stderr until GUC settings get loaded.
 	 */
+	MyProcPid = getpid();
 	MemoryContextInit();
 
 	/*
-- 
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