From c90530193ff47005b04b6e8b2379d44162d50fa2 Mon Sep 17 00:00:00 2001
From: Gabriel Ebner <gebner@gebner.org>
Date: Sat, 31 Dec 2016 15:15:49 +0100
Subject: [PATCH] fix(library/st_task_queue): handle null dependencies

---
 src/library/st_task_queue.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/library/st_task_queue.cpp b/src/library/st_task_queue.cpp
index c21766cf5f..a61060f22d 100644
--- a/src/library/st_task_queue.cpp
+++ b/src/library/st_task_queue.cpp
@@ -34,6 +34,7 @@ void st_task_queue::submit(generic_task_result const & t) {
     std::vector<generic_task_result> deps;
     try { deps = unwrap(t)->m_task->get_dependencies(); } catch (...) {}
     for (auto & d : deps) {
+        if (!d) continue;
         switch (unwrap(d)->m_state.load()) {
             case task_result_state::FAILED:
                 unwrap(t)->m_state = task_result_state::FAILED;