From f2522b43139cc1a41a4a75d9eff84ee40be408da Mon Sep 17 00:00:00 2001
From: Omar Polo <op@omarpolo.com>
Date: Wed, 31 Mar 2021 16:52:07 +0000
Subject: [PATCH] check if sys/queue.h provides TAILQ_FOREACH_SAFE

---
 have/queue_h.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/have/queue_h.c b/have/queue_h.c
index d503040..81d3c61 100644
--- a/have/queue_h.c
+++ b/have/queue_h.c
@@ -18,12 +18,18 @@
 
 #include <stddef.h>
 
-struct ibuf {
-	TAILQ_ENTRY(ibuf)	 entry;
-};
+TAILQ_HEAD(tailhead, entry) head;
+struct entry {
+	TAILQ_ENTRY(entry) entries;
+} *np, *nt;
 
 int
 main(void)
 {
+	TAILQ_INIT(&head);
+	TAILQ_FOREACH_SAFE(np, &head, entries, nt) {
+		/* nop */;
+	}
+
 	return 0;
 }