https://bugs.gentoo.org/934006
https://github.com/linux-audit/audit-userspace/commit/1dd6123e810ce255692a693a5d52a0c34cf432d0

From 1dd6123e810ce255692a693a5d52a0c34cf432d0 Mon Sep 17 00:00:00 2001
From: Steve Grubb <ausearch.1@gmail.com>
Date: Mon, 1 Apr 2024 12:10:33 -0400
Subject: [PATCH] Add empty macro to fix muscl c builds

--- a/common/common.h
+++ b/common/common.h
@@ -1,5 +1,5 @@
-/* audit-fgets.h -- a replacement for glibc's fgets
- * Copyright 2018,2022 Red Hat Inc.
+/* common.h -- common utility functions used throughout
+ * Copyright 2018-24 Red Hat Inc.
  * All Rights Reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ -29,6 +29,9 @@
 #ifndef __attr_access
 #  define __attr_access(x)
 #endif
+#ifndef __attribute_malloc__
+#  define __attribute_malloc__
+#endif
 #ifndef __attr_dealloc
 #  define __attr_dealloc(dealloc, argno)
 #endif
