From 5d43d60c56d75afb743cef2d32bffe60df0847d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Sat, 24 Aug 2024 21:03:08 +0200
Subject: [PATCH] Disable user name lookup in static builds against glibc

Static linking against glibc might crash due to usage of NSS modules,
e.g. via getpwuid() (see #503).
The linker also warns about it:

    warning: Using 'getpwuid' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
---
 UsersTable.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/UsersTable.c b/UsersTable.c
index 6586a4b90..b0f8b7ee7 100644
--- a/UsersTable.c
+++ b/UsersTable.c
@@ -30,6 +30,7 @@ void UsersTable_delete(UsersTable* this) {
 }
 
 char* UsersTable_getRef(UsersTable* this, unsigned int uid) {
+#if !defined(BUILD_STATIC) || !defined(__GLIBC__)
    char* name = Hashtable_get(this->users, uid);
    if (name == NULL) {
       const struct passwd* userData = getpwuid(uid);
@@ -39,6 +40,11 @@ char* UsersTable_getRef(UsersTable* this, unsigned int uid) {
       }
    }
    return name;
+#else
+   (void)this;
+   (void)uid;
+   return NULL;
+#endif
 }
 
 inline void UsersTable_foreach(UsersTable* this, Hashtable_PairFunction f, void* userData) {