Fix memory leak in postmasterMain

[Henrik TJ]

Hi

This is fairly inconsequential as memory leaks goes, but if -D is used 
when starting postgres, the memory allocated by stdrup() will never be 
freed. Found with valgrind.

Technically, this also happens with output_config_variable (-C), but since 
postmaster prints and exits with that, there isn't much point in fixing 
it.


  best regards, HenrikFrom 78a88ba10f8f6aea2b4ccf831ab6775bae68603c Mon Sep 17 00:00:00 2001
From: Henrik TJ <hen...@0x48.dk>
Date: Wed, 18 Feb 2026 15:28:52 +0100
Subject: [PATCH] Fix userDoption not getting freed in postmaster

---
 src/backend/postmaster/postmaster.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/backend/postmaster/postmaster.c 
b/src/backend/postmaster/postmaster.c
index 3fac46c402b..7480c28f08e 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -784,6 +784,8 @@ PostmasterMain(int argc, char *argv[])
         */
        if (!SelectConfigFiles(userDoption, progname))
                ExitPostmaster(2);
+       if (userDoption != NULL)
+               free(userDoption);
 
        if (output_config_variable != NULL)
        {
-- 
2.53.0