From d9a936db09327e2b9a08ff8834e378b3941d362c Mon Sep 17 00:00:00 2001
From: Drew Galbraith <dgalbraith33@gmail.com>
Date: Sat, 25 Nov 2023 11:13:09 -0800
Subject: [PATCH] [Glacier] Fix div0 bug when calling .Contains on empty
 hashmap.

---
 lib/glacier/container/hash_map.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/glacier/container/hash_map.h b/lib/glacier/container/hash_map.h
index a101bda..e8a9eec 100644
--- a/lib/glacier/container/hash_map.h
+++ b/lib/glacier/container/hash_map.h
@@ -92,6 +92,9 @@ const V& HashMap<K, V, H>::at(const K& key) const {
 
 template <typename K, typename V, class H>
 bool HashMap<K, V, H>::Contains(const K& key) const {
+  if (data_.size() == 0) {
+    return false;
+  }
   uint64_t hc = H()(key);
   auto& ll = data_[hc % data_.size()];