From f7882e2d6943e3ddadcbd287d8f181c10276afdb Mon Sep 17 00:00:00 2001
From: digiwombat <randall@dasaku.net>
Date: Wed, 31 May 2023 20:35:28 -0400
Subject: [PATCH] Fixed a crash caused by erasing from empty last_n_tokens

---
 examples/server/server.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/examples/server/server.cpp b/examples/server/server.cpp
index c12a84fa7..3e27a7bbb 100644
--- a/examples/server/server.cpp
+++ b/examples/server/server.cpp
@@ -251,7 +251,10 @@ struct llama_server_context
           id = llama_sample_token(ctx, &candidates_p);
         }
       }
-      last_n_tokens.erase(last_n_tokens.begin());
+      if (!last_n_tokens.empty())
+      {
+          last_n_tokens.erase(last_n_tokens.begin());
+      }
       last_n_tokens.push_back(id);
       num_tokens_predicted++;
     }