From 3e2810248a975560bf7397c3a1fbb8b0ac62f0f3 Mon Sep 17 00:00:00 2001
From: Andrej Babic <andrej.babic@psi.ch>
Date: Fri, 24 Apr 2020 19:36:33 +0200
Subject: [PATCH] Fix nullptr exception

---
 sf-buffer/src/sf_writer.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sf-buffer/src/sf_writer.cpp b/sf-buffer/src/sf_writer.cpp
index 54f966b..686a640 100644
--- a/sf-buffer/src/sf_writer.cpp
+++ b/sf-buffer/src/sf_writer.cpp
@@ -52,6 +52,11 @@ void receive_replay(
             auto rb_metadata = make_shared<DetectorFrame>();
             image_buffer = ring_buffer.reserve(rb_metadata);
 
+            if (image_buffer == nullptr){
+                this_thread::sleep_for(chrono::milliseconds(5));
+                continue;
+            }
+
             for (size_t i = 0; i < n_modules; i++) {
                 auto n_bytes_metadata = zmq_recv(
                         sockets[i],