From ef948b4e6e93837a46a67caec513b794ffdf6c86 Mon Sep 17 00:00:00 2001
From: schellingb <14200249+schellingb@users.noreply.github.com>
Date: Thu, 19 Sep 2024 21:50:12 +0900
Subject: [PATCH] Limit keys accepted by the libretro keyboard callback to
 known keys (#524)

---
 dosbox_pure_libretro.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dosbox_pure_libretro.cpp b/dosbox_pure_libretro.cpp
index e87f111d..04008762 100644
--- a/dosbox_pure_libretro.cpp
+++ b/dosbox_pure_libretro.cpp
@@ -3278,6 +3278,7 @@ void retro_init(void) //#3
 		static void RETRO_CALLCONV keyboard_event(bool down, unsigned keycode, uint32_t character, uint16_t key_modifiers)
 		{
 			// This can be called from another thread. Hopefully we can get away without a mutex in DBP_QueueEvent.
+			if (keycode >= RETROK_LAST) return;
 			int val = dbp_keymap_retro2dos[keycode];
 			if (!val) return;
 			if (down && !dbp_keys_down[val])