From 994e3e70926d711f763897c7f5a4bf009a7f5cd1 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Thu, 29 Mar 2018 12:51:46 +1100
Subject: [PATCH] SITL: SIM_Vicon: fix compiler warning

---
 libraries/SITL/SIM_Vicon.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libraries/SITL/SIM_Vicon.cpp b/libraries/SITL/SIM_Vicon.cpp
index aa7449614d..bd8e4b9294 100644
--- a/libraries/SITL/SIM_Vicon.cpp
+++ b/libraries/SITL/SIM_Vicon.cpp
@@ -29,7 +29,9 @@ using namespace SITL;
 Vicon::Vicon()
 {
     int tmp[2];
-    pipe(tmp);
+    if (pipe(tmp) == -1) {
+        AP_HAL::panic("pipe() failed");
+    }
     fd_my_end    = tmp[1];
     fd_their_end = tmp[0];