From 0f76143444a11cb60f07e22b359cd6d80b9b50c4 Mon Sep 17 00:00:00 2001
From: Haoyu Qiu <timothyqiu32@gmail.com>
Date: Wed, 16 Feb 2022 16:12:30 +0800
Subject: [PATCH] Make VMap::find_nearest return -1 when empty

(cherry picked from commit 3057b19daa3a9c2e6fbd1da97822e8c1f795dcdc)
---
 core/vmap.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/vmap.h b/core/vmap.h
index 35548dc5cc9..8b9961fe0e0 100644
--- a/core/vmap.h
+++ b/core/vmap.h
@@ -141,6 +141,9 @@ public:
 	}
 
 	int find_nearest(const T &p_val) const {
+		if (_cowdata.empty()) {
+			return -1;
+		}
 		bool exact;
 		return _find(p_val, exact);
 	}