Hi!
I'm trying to use pg_getaddrinfo_all() with NULL hints, but got segfault.
According to man(3) getaddrinfo, hints may be passed as NULL. In this
case af_family
is equivalent to AF_UNSPEC.
I'm adding a patch to pg_getaddrinfo_all() to make it available by
passing hintp as NULL.
--
With best regards,
Sergey Tatarintsev,
PostgresPro
From 5b2da1a2ecdb4cc34428426f1e6c4266ce709a86 Mon Sep 17 00:00:00 2001
From: Sergey Tatarintsev <[email protected]>
Date: Mon, 10 Nov 2025 11:41:12 +0700
Subject: [PATCH v1] Ability to pass NULL as a hintp to pg_getaddrinfo_all()
---
src/common/ip.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/common/ip.c b/src/common/ip.c
index 0e7897a5c8f..e78a7439a01 100644
--- a/src/common/ip.c
+++ b/src/common/ip.c
@@ -58,7 +58,8 @@ pg_getaddrinfo_all(const char *hostname, const char *servname,
/* not all versions of getaddrinfo() zero *result on failure */
*result = NULL;
- if (hintp->ai_family == AF_UNIX)
+ /* Pass NULL to hintp is equivalent to ai_family=AF_UNSPEC */
+ if (hintp && hintp->ai_family == AF_UNIX)
return getaddrinfo_unix(servname, hintp, result);
/* NULL has special meaning to getaddrinfo(). */
--
2.43.0
