From a31bf559b9afc3a95162a01eb399057e1ed97fcc Mon Sep 17 00:00:00 2001
From: Ryan Tharp <neuro@interx.net>
Date: Tue, 19 Jun 2018 02:19:23 -0700
Subject: [PATCH] guard to prevent crash

---
 llarp/pathbuilder.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/llarp/pathbuilder.cpp b/llarp/pathbuilder.cpp
index 34cd31dbe..f2169a90c 100644
--- a/llarp/pathbuilder.cpp
+++ b/llarp/pathbuilder.cpp
@@ -76,8 +76,13 @@ llarp_pathbuilder_context_free(struct llarp_pathbuilder_context* ctx)
 void
 llarp_pathbuilder_build_path(struct llarp_pathbuild_job* job)
 {
+  if (!job->context)
+  {
+    llarp::Error("failed to build path because no context is set in job");
+    return;
+  }
   job->router = job->context->router;
   llarp_logic_queue_job(job->router->logic,
                         {job, &llarp::pathbuilder_start_build});
 }
-}
\ No newline at end of file
+}