From 12ab2f4b851a9fd47f34bc38328a0fb5492a6098 Mon Sep 17 00:00:00 2001
From: Cory McWilliams <cory@unprompted.com>
Date: Tue, 28 Dec 2021 19:47:32 +0000
Subject: [PATCH] Don't let promise IDs be zero.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3713 ed5197a5-7fde-0310-b194-c3ffbd925b24
---
 src/task.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/task.c b/src/task.c
index 47f44456..977e66f9 100644
--- a/src/task.c
+++ b/src/task.c
@@ -1068,7 +1068,7 @@ promiseid_t tf_task_allocate_promise(tf_task_t* task)
 	promiseid_t promiseId;
 	do {
 		promiseId = task->_nextPromise++;
-	} while (_tf_task_find_promise(task, promiseId));
+	} while (_tf_task_find_promise(task, promiseId) || !promiseId);
 
 	promise_t promise =
 	{