From 43fb86320e239537882658cc3d9b4f399ae5f7c0 Mon Sep 17 00:00:00 2001
From: Lior Halphon <LIJI32@gmail.com>
Date: Tue, 13 Apr 2021 22:05:13 +0300
Subject: [PATCH] Hard fail on unexpected SGB blocks

---
 Core/save_state.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Core/save_state.c b/Core/save_state.c
index 89924ac..6ef62c1 100644
--- a/Core/save_state.c
+++ b/Core/save_state.c
@@ -987,6 +987,7 @@ static int load_bess_save(GB_gameboy_t *gb, virtual_file_t *file, bool is_samebo
                 break;
             case BE32('SGB '):
                 if (!found_core) goto parse_error;
+                if (!gb->sgb) goto parse_error;
                 if (LE32(block.size) != sizeof(BESS_SGB_t) - sizeof(block)) goto parse_error;
                 file->read(file, &sgb.header + 1, sizeof(BESS_SGB_t) - sizeof(block));
                 found_sgb = true;