From 1c3011ba4bc7f326682db754e781561409df913d Mon Sep 17 00:00:00 2001
From: Peter Johnson <johnson.peter@gmail.com>
Date: Mon, 28 Dec 2020 14:36:30 -0800
Subject: [PATCH] [glass] Fix handling of "/" NetworkTables key (#2991)

---
 glass/src/libnt/native/cpp/NetworkTables.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/glass/src/libnt/native/cpp/NetworkTables.cpp b/glass/src/libnt/native/cpp/NetworkTables.cpp
index 693a55cd6b..3d434198ae 100644
--- a/glass/src/libnt/native/cpp/NetworkTables.cpp
+++ b/glass/src/libnt/native/cpp/NetworkTables.cpp
@@ -190,6 +190,11 @@ void NetworkTablesModel::Update() {
     parts.clear();
     wpi::StringRef{entry->name}.split(parts, '/', -1, false);
 
+    // ignore a raw "/" key
+    if (parts.empty()) {
+      continue;
+    }
+
     // get to leaf
     auto nodes = &m_root;
     for (auto part : wpi::ArrayRef(parts.begin(), parts.end()).drop_back()) {