From cf21565c77656cf12bef6f823073d68d33e96bc5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pa=CC=84vels=20Nadtoc=CC=8Cajevs?=
 <7645683+bruvzg@users.noreply.github.com>
Date: Sat, 18 Oct 2025 19:25:55 +0300
Subject: [PATCH] [X11] Fix `keyboard_get_label_from_physical` errors when used
 on key without label.

---
 platform/linuxbsd/x11/display_server_x11.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/platform/linuxbsd/x11/display_server_x11.cpp b/platform/linuxbsd/x11/display_server_x11.cpp
index f97b5621e5d..d0a469b8eec 100644
--- a/platform/linuxbsd/x11/display_server_x11.cpp
+++ b/platform/linuxbsd/x11/display_server_x11.cpp
@@ -3746,8 +3746,11 @@ Key DisplayServerX11::keyboard_get_label_from_physical(Key p_keycode) const {
 	Key key = KeyMappingX11::get_keycode(xkeysym);
 #ifdef XKB_ENABLED
 	if (xkb_loaded_v08p) {
-		String keysym = String::chr(xkb_keysym_to_utf32(xkb_keysym_to_upper(xkeysym)));
-		key = fix_key_label(keysym[0], KeyMappingX11::get_keycode(xkeysym));
+		char32_t chr = xkb_keysym_to_utf32(xkb_keysym_to_upper(xkeysym));
+		if (chr != 0) {
+			String keysym = String::chr(chr);
+			key = fix_key_label(keysym[0], KeyMappingX11::get_keycode(xkeysym));
+		}
 	}
 #endif