From 96c76d66dbe7eb660f3d27ca616d2f9d91dbaae6 Mon Sep 17 00:00:00 2001
From: John Birrell <jb@FreeBSD.org>
Date: Wed, 29 Apr 1998 09:08:43 +0000
Subject: [PATCH] Reference an external variable in threaded programs so that
 the autoinitialiser gets linked in and therefore called before main().

---
 lib/libc/stdlib/exit.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/libc/stdlib/exit.c b/lib/libc/stdlib/exit.c
index 5df19dc1bd4a..b0f6d3a51882 100644
--- a/lib/libc/stdlib/exit.c
+++ b/lib/libc/stdlib/exit.c
@@ -60,6 +60,12 @@ exit(status)
 	register struct atexit *p;
 	register int n;
 
+#ifdef	_THREAD_SAFE
+	extern int _thread_autoinit_dummy_decl;
+	/* Ensure that the auto-initialization routine is linked in: */
+	_thread_autoinit_dummy_decl = 1;
+#endif
+
 	for (p = __atexit; p; p = p->next)
 		for (n = p->ind; --n >= 0;)
 			(*p->fns[n])();