1 files changed, 49 insertions, 0 deletions
diff --git a/regress/lib/csu/callbacks/libab/ab.c b/regress/lib/csu/callbacks/libab/ab.c
new file mode 100644
index 00000000000..fcf6b79213e
--- /dev/null
+++ b/regress/lib/csu/callbacks/libab/ab.c
@@ -0,0 +1,49 @@
+/*      $OpenBSD: ab.c,v 1.1 2014/11/23 08:46:49 guenther Exp $       */
+
+/*
+ * Copyright (c) 2014 Philip Guenther <guenther@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <pthread.h>
+
+#define	CALLBACK(file, name)					\
+	static void name(void)					\
+	{							\
+		fprintf(file, "libab "#name"\n");		\
+		fflush(file);					\
+	}
+
+CALLBACK(stdout, cleanup)
+
+void
+ab(void)
+{
+	atexit(cleanup);
+}
+
+static FILE *otherf;
+
+CALLBACK(stdout, atfork_prepare)
+CALLBACK(stdout, atfork_parent)
+CALLBACK(otherf, atfork_child)
+
+void
+ab_atfork(FILE *f)
+{
+	otherf = f;
+	pthread_atfork(atfork_prepare, atfork_parent, atfork_child);
+}